32 Developer/Engineer Front End | Blockchain jobs

Backend Engineer - San Francisco - (P1615E) Blockchain Developers, the leading blockchain recruiting agency, is seeking a Backend Engineer for our client, an exciting, fast growing company that is driving mainstream adoption of cryptocurrencies for hundreds of millions of users. This is your opportunity to get into blockchain development! This is a fast-paced environment where a developer will learn a lot. Unlike others, we have app engineers and protocol engineers working side-by-side. You will Tackle and solve hard engineering and user experience problems in an elegant and seamless manner Participate in all stages of development including refining product vision, gathering requirements, software system design, coding, testing, release and support. Must Have Strong hands on backend development to include performance tuning, debugging, unit and functional testing on high quality products and projects Develop and Design API Passion for cryptocurrencies Strongly Prefer 4+ years of backend development Experience working in the cryptocurrency or blockchain sector, preferably with recent projects in blockchain Familiarity with Python, Django, Node.js, Go, PostgreSQL, Redis, and backbone.js. Location San Francisco

Ethereum Engineer - LA or Chicago or Remote - (S0525L) Blockchain Developers, the leading blockchain recruiting agency, is seeking a Ethereum Engineer for our client, an exciting, well-funded company that is disrupting the consumer credit world. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Job Responsibilities: As an Ethereum Engineer, you will work on the core Ethereum development on a permissioned network, protocol-level development and smart contracts.. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Must Have: 4+ years of experience in a programming language like Go Background in algorithms, relational databases, and networking Computer science degree or equivalent Design and development of API’s Nice To Have: Blockchain development (e.g., Ethereum, Solidity, truffle, bitcoin contracts, Smart Contracts, Geth, etc.) Cryptographic principles (asymmetric versus symmetric encryption, digital signatures, hashing, message authentication) Front-end framework like React, Angular.js, etc. Experience in FinTech, including fraud, payments and credit Other Location: LA or Chicago or Remote Full Time

Ethereum Engineer - LA or Chicago or Remote - (S0525L) Blockchain Developers, the leading blockchain recruiting agency, is seeking a Ethereum Engineer for our client, an exciting, well-funded company that is disrupting the consumer credit world. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Job Responsibilities: As an Ethereum Engineer, you will work on the core Ethereum development on a permissioned network, protocol-level development and smart contracts.. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Must Have: 4+ years of experience in a programming language like Go Background in algorithms, relational databases, and networking Computer science degree or equivalent Design and development of API’s Nice To Have: Blockchain development (e.g., Ethereum, Solidity, truffle, bitcoin contracts, Smart Contracts, Geth, etc.) Cryptographic principles (asymmetric versus symmetric encryption, digital signatures, hashing, message authentication) Front-end framework like React, Angular.js, etc. Experience in FinTech, including fraud, payments and credit Other Location: LA or Chicago or Remote Full Time

Software Engineer (Full Stack) - LA or Chicago - (S424L) Blockchain Developers, the leading blockchain recruiting agency, is seeking a Software Engineer (Full Stack) for our client, an exciting, well-funded company that is disrupting the consumer credit world. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Job Responsibilities: As Software Engineer, you will be responsible for developing frontend and backend components, integrating into our infrastructure and helping build the underlying blockchain infrastructure. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Must Have: 2+ years of experience in a full-stack environment and a strong understanding of a web development language like Python, Go, Ruby, with a familiarity of blockchain applications Experience with modern development frameworks, like Django, Ruby on Rails and strong knowledge of front-end frameworks like React, Angular.js, etc. Owned the creation and consumption of production APIs Strongly Prefer: A prior background in FinTech, fraud or credit is a plus You are an active contributor to open-source projects with representation on Github or similar platform Industry experience/knowledge in blockchain development (e.g., Ethereum, Solidity, truffle, bitcoin contracts, etc.) An understanding of applied cryptographic principles (asymmetric versus symmetric encryption, digital signatures, hashing, message authentication) Knowledge in complex deployment pipelines using tools like Chef, Ansible, Docker, and/or Kubernetes Other Location: Los Angeles or Chicago

Blockchain Developers, Inc., the leading blockchain recruiting agency, is seeking multiple Full Stack Application Developers for our client, reinventing the luxury auction house.   By joining our client, you will have the unique opportunity to make a huge impact working with distributed applications that are changing the way auctions take place. Not only innovating how auctions take place they're also revolutionizing the intersection of blockchain, cryptocurrency, and commerce. If you like freedom, interesting challenges, and being a punk this is match made in heaven. Responsibilities: The Full Stack Application Developer position is an integral part of our clients software development team. This role will utilize your software design, analysis, and programming skills to enhance their user-facing products. You will be working with a team of application developers to deliver features on a large web based application with an intuitive interface that hides the complexity of our backend systems and underlying blockchain technology. You will be working alongside other engineers and developers working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and the creation of quality products is essential. Must Have: Bachelor’s degree in Computer Science or equivalent experience 6+ years of overall IT experience 4+ years of experience building mobile and web apps Experience developing backend APIs Github link or similar Have a strong interest and understanding of blockchain technology Strongly prefer: Understand and implement security and data protection Front-end (CSS) framework like Foundation or Bootstrap Back-end programming languages like Node.js, Jade, EJS, Jinja, Python, Java, .NET, Node.js, etc. (bonus for solidity) Advanced JavaScript libraries and frameworks such as Web3.js, AngularJS, KnockoutJS, BackboneJS, ReactJS, DurandalJS etc. CSS Preprocessors like Saas or LESS Work experience with web platforms like AWS Some Of Your Benefits... All of our full-time employees are eligible for great benefits; Competitive package including salary, cryptocurrency token allocation, and company matches to a 401k plan Generous vacation policy Peace of mind with terrific medical, dental, and vision plans alongside family leave Location: New York, New York W-2 only

Blockchain Developers, Inc., the leading blockchain recruiting agency, is seeking a Sr. Full Stack Engineer for our client, building a world-changing platform for developers and blockchain companies. Our client will ICO soon. if you really believe in a decentralized world, and want to make a difference, you could be right for our client. They are building a platform for developers to monetize their work. Their platform is a fundamental revolutionary protocol (rights management) that will enable enable developers to build smart contracts that can transact and exchange things. For example, an autonomous vehicle will be able to buy its own fuel with a smart contract - with no people involved. Must Have: 5 years or more experience writing code and working with a team A degree in computer science or related area Full stack engineer with experience with a range of front-end and back-end technologies Experience with one or more of the following languages: C++, Go, Javascript / Typescript, NodeJS, Solditity Open to evaluating, learning, and using developing frameworks. Some examples we like: React, Vue, MobX, GraphQL. Strongly Prefer: Blockchain experience Experience working on Ethereum smart contracts Experience with EOS (web assembly) Experience in a startup environment Other: Prefer local to San Francisco Bay Area

Blockchain Developers, the leading blockchain recruiting agency, is seeking a Software Engineer (Full Stack) for our client, an exciting, well-funded company that is disrupting the consumer credit world. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Job Responsibilities: As Software Engineer, you will be responsible for developing frontend and backend components, integrating into our infrastructure and helping build the underlying blockchain infrastructure. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Must Have: 2+ years of experience in a full-stack environment and a strong understanding of a web development language like Python, Go, Ruby, with  familiarity of blockchain applications Experience with modern development frameworks, like Django, Ruby on Rails, or React, and strong knowledge of front-end frameworks like React, Angular.js, etc. Owned the creation and consumption of production API’s Strongly Prefer: A prior background in FinTech, fraud or credit is a plus You are an active contributor to open-source projects with representation on Github or similar platform Industry experience/knowledge in blockchain development (e.g., Ethereum, Solidity, truffle, bitcoin contracts, etc.) An understanding of applied cryptographic principles (asymmetric versus symmetric encryption, digital signatures, hashing, message authentication) Knowledge in complex deployment pipelines using tools like Chef, Ansible, Docker, and/or Kubernetes Other Location: Los Angeles or Chicago

AnyLedger is a fast growing and Berlin based startup. We aim to be the best platform for every company interested in leveraging blockchain technology in IoT. We proudly apply the scientific method in every single aspect of our journey. We value hard work, ambition, cultural curiosity and flat hierarchies. We are looking for a Full-Stack Developer to join our team and help us bridge the physical world to the blockchain. You will be responsible for the whole AnyLedger stack, from developing crypto wallets for embedded IoT devices, all the way to our cloud Kubernetes deployments which talk to Ethereum, HyperLedger and IPFS nodes. Sounds challenging enough? Responsibilities - Deliver crypto wallets for various blockchain projects on small-footprint embedded devices. - Maintain our React web app for wallet/device management. - Take care of our Kubernetes/Docker deployments. - Further improve our decentralized device management solution Requirements - Experience in embedded development (Ideally with Zephyr, LWM2M, CoAP, MQTT, Leshan) - Understanding how crypto wallets work - Previous Ethereum or HyperLedger experience - Developed React web apps before Optional Requirements:  - Interest in IoT security space - Previous startup experience - Previous connections and projects in the blockchain space - Berlin based Benefits of Working at AnyLedger - Young and fast growing startup. A lot to learn, a lot of responsibilities and a lot of fun!
 - Flexible compensation plans, based on tokens and equity.
 - Flexible vacation, you decide when and how long you take a break. 
 - Deeply rooted in the Berlin startup scene: meetups, events and workshops. To apply, please send us your GitHub repo, one-pager CV and links/references to past projects.

Company Overview Digital Assets Data Inc. has raised more than $3m and has begun building enterprise products for crypto-focused hedge funds and institutional investors through collection, processing, and aggregation of a variety of data points on individual cryptoassets and the overall ecosystem.   Job Description As a Front-End Developer, you will be responsible for implementing designs and prototypes into a fully functioning single page application, interfacing with the UI/UX design team to bring their vision into reality while simultaneously offering feedback on technical feasibility.  This hire will also interface with the back-end API team and will be responsible for developing and maintaining API contracts and assisting with the scoping of API endpoints. Priorities include: working to expand our current React web app to React native app, adding responsive/mobile CSS designs, and adding additional front-end testing in Jest.   Perks Join a well-funded and rapidly growing startup in an exciting field Work with an energetic, passionate, and knowledgeable team that has had previous experience building and successfully exiting an enterprise SaaS startup in another financial services vertical Make an outsized impact and grow your skills while wearing a variety of hats Learn about distributed ledger technology and the cryptocurrency ecosystem Receive competitive benefits (health, dental, and vision) Required Qualifications 3+ years of front-end development experience with a front-end framework, such as React or Angular Experience using Jasmine, Mocha, Jest or similar test tools Experience with CSS preprocessors like Sass or Less Experience with webpack or similar bundling tool Experience with agile software development methodologies like Scrum Knowledge of VCS such as Git Interest in crypto and distributed ledger technology Ability to dive in, get it done, and to know when to ask for help Willingness to write tests and code review   Preferred Qualifications   Knowledge of a backend framework such as Django Full stack experience building a GraphQL schema Experience with Relay Modern Experience with relational databases Experience with configuration management tools Experience with non-relational databases (NoSQL) Experience with columnar databases Digital Assets Data Inc. is not able to offer immigration sponsorship at this time.

We are looking to extend our Mining Team in Munich with a keen Front-End Developer from the industry who has experience with working in a team of developers and is well-versed in the latest web development technologies. You are a self-starter and ready to solve tech-related problems as well as explore cutting-edge technologies. You will be responsi - ble for intriguing projects in the field of cryptocurrency and related blockchain processes, such as developing blockchain middleware and supporting large scale miners with custom monitoring solutions. As part of our team you will collaborate on concepts with back-end developers and UI/UX designers in order to develop clean, maintainable high-quality web ap - plications using state of the art SW stack. Your Programming Skills Strong knowledge of web standards (HTML5, CSS3, etc.) Strong core JavaScript proficiency, TypeScript is a plus One or more advanced JavaScript frameworks (ReactJS, AngularJS, VueJS) One or more task runner (Webpack, Gulp, Grunt, etc.) One or more CSS preprocessors (LESS, Sass, etc.) Continuous integration and deployment JIRA or comparable Project Management tools GIT, gitflow Linux or OSX command line (Bash or similar) More about you Very good English language skills German language skills is a plus but not required Proven reliability and integrity Out of the box thinking Cross-discipline and cross-team collaboration skills Driven to execute and follow through An independent style of work, but still a team player

The Company Founded in 2015 by Charles Hoskinson and Jeremy Wood, IOHK is a technology company committed to using peer-to-peer innovations to provide financial services to the three billion people who don’t have them. We are an engineering company that builds cryptocurrencies and block chains for academic institutions, government entities and corporations. We are a decentralized company that loves small innovative teams forming and executing ideas that cause cascading disruption. Job Description We are looking for a Front-End Web Developer who is motivated to combine the art of design with the art of programming. Responsibilities will include translation of the UI/UX design wireframes to actual code that will produce visual elements of the application(s) we make. You will work with the UI/UX designer and bridge the gap between graphical design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works. Responsibilities Build reusable, well commented code and libraries for future use. Optimize code for maximum speed and scalability. Collaborate with other team members from all over the world. Work flexible hours, be committed to the tasks at hand. Necessary Skills & Qualifications Expert level JavaScript & you know all its strengths and weaknesses. Deep knowledge of UX patterns and implementation. Expert understanding of web technologies (JS, HTML5, CSS3), CSS pre-processors (LESS and SASS) and JavaScript frameworks (especially: React, Node.js) Experience in other programming languages (preferably also in statically typed and/or purely functional). Understanding of functional programming and concepts. Good knowledge of software architecture and most common design patterns. Experience with writing unit, integration and acceptance tests. Basic knowledge of image and design editing tools e.g. Sketch, Photoshop, Gimp, Illustrator etc. Proficient understanding of cross-browser and cross-device compatibility issues and how to build responsive interfaces. Code versioning tools, such as {Git / Mercurial / SVN}. Good understanding of SEO principles. Desired Skills & Qualifications Hard working ethics and full project devotion. Familiarity with the bigger JS ecosystem. A portfolio of good work. A good eye for detail.

Moon Assist is looking for an experienced and enthusiastic Frontend Developer. You will be part of a small and dedicated international team that is working on a next-gen cryptocurrency trading platform. Are you a Frontend Developer with a thirst for knowledge, a love for new technology and an affinity for crypto? If yes, keep reading! Desired skills: - 3+ years development experience - advanced Modern Javascript (ES6) - advanced React & Redux - advanced HTML, CSS - experience with automated testing - experience with RESTful Web Services and Web Sockets - experience with Cryptocurrency Trading/Exchanges - fluent English language skills (both written and spoken) - a portfolio of past work that you can share upon request The candidates we are looking for have experience with: - Github / Gitlab / Bitbucket - Heroku - Slack (Communication channel) - Trello (Scrum methods) - Handoff software like Zeplin This role will be working closely with our platform development lead. It's important that you are available immediately and are able to devote 4 hours per day. Because we have a talented international team, it’s important you can be flexible with your schedule (depending upon your time zone). For the time being, we are all working for sweat equity until the company can raise capital or generate revenue. As such, this is an equity-only opportunity. Are you eager to contribute to the future of cryptocurrency trading? Yes? Then we are looking for you!

The Senior Manager, Blockchain Engineer is a member of the Blockchain Strategy & Execution team.  Our purpose is to help Pfizer effectively evaluate and leverage blockchain technology in support of business goals.  Blockchain has significant potential in the healthcare/life sciences sector and we bring the depth of knowledge in this emerging technology to enable an aligned strategy, identify the ‘best fit’ opportunities, and contribute to their technical development. The Blockchain Engineer is a critical role in meeting our mission.  Blockchain is a complex and rapidly evolving technical domain.  This role will bring blockchain technical accumen to all Pfizer blockchain initiatives, and will be involved in strategy, planning, execution and support.  Being part of a small ‘start up’ team, the selected candidate will need to wear multiple hats, splitting time between educating others, hands-on prototyping, providing technical oversight to project delivery, and defining preferred solution patterns and decision matrices.  The selected candidate will have a deep technical curiosity and be an agile learner, displaying resourcefulness in researching, learning and applying blockchain technology.  ROLE RESPONSIBILITIES Provides technical input and oversight to blockchain projects.   Is engaged through all project phases to ensure the architectural designs and delivered technology solutions are engineered appropriately for the availability, accessibility and scalability requirements of the project.  Ensures adherence to appropriate standards for technology and data (corporate, industry, national and international).  Performs code reviews. Performs technical evaluations of commercial blockchain-based solutions.   Evaluates the soundness of design and the legitimacy of claims around functionality, scalability, performance and security. Educates internal stakeholders in blockchain technology.   Helps to raise Pfizer’s blockchain IQ by leading learning sessions, communities of practice, technical forums, and corporate social media channels. Contributes to development of high-impact use cases.   Partners with BT and business lines to identify the most valuable, viable and feasible use cases.   Drives innovation through in-house experimentation with blockchain tools.   Runs a blockchain lab to develop proofs of concepts and demonstrate the feasibility of new ideas and test value propositions.  Develops and maintains roadmaps and decision trees for blockchain technologies .  Identifies preferred blockchain development stack and decision trees for choosing among alternatives. Participates in cross-industry consortia and strategic relationships.   Lends subject matter expertise to the partnerships we are advancing both technical and business oriented.  Acts as a thought leader in the blockchain space.   Builds effective relationships with internal and external experts in technology, science and healthcare.  Represents Pfizer’s blockchain strategy both internally and externally  Develops, maintains and promotes best practices in the realm of distributed applications.   Creates solution patterns and reference architectures for blockchain designs (including integration with internal systems) QUALIFICATIONS Education: MINIMUM: BS/MS in Computer Science, Engineering or related field Preferred: Master degree in Information Management, Computer Science, Engineering or Technology Management. Technical: 8+ years’ application development experience in the following: Java, JavaScript, node.JS, Cloud, RESTful Webservices Object Oriented Java Programming and designing applications using common design patterns - Web Services 5+ years’ experience in Full-stack programming experience Preferred: 2 year of experience developing Blockchain Technology applications or proof-of concepts (POCs) using Hyperledger, Ethereum, Solidity, or other language (if not met, then willingness/ability to immerse yourself and become expert fast) Experience building for cloud deployments such as AWS, Azure, Google Cloud Knowledge of blockchain platforms and technologies such as: Ethereum, Hyperledger, Quorum, etc. Experience creating smart contracts, designed and tested with security and resiliency in mind Experience: Life Sciences or Healthcare experience a strong plus Proven problem-solving experience Experience leading technical teams during all phases of development and deployment Agile development practices Proven experience working with sponsors and business leadership teams contributing to the development and delivery of technology roadmaps, strategy and operating plans. Other: Passionate about the prospects of decentralized technologies Interest in blockchain and enthusiasm for working in a space full of unknowns Attitude of lifelong learning – in this rapidly changing space the “right” answer can change Excellent analytical, interpersonal and communication skills, including strong presentation skills.  Able to moderate and facilitate conversations with both technical and non-technical audiences Excellent time management, organizational and collaboration skills Ability to work independently NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS Occasional travel to northeast Pfizer sites may be required Business Technology runs 7x24x365 days/year. This role may require physical or virtual participation on a weekend, holiday, or after normal business hours. EEO & Employment Eligibility Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, disability or veteran status.  Pfizer also complies with all applicable national, state and local laws governing nondiscrimination in employment as well as work authorization and employment eligibility verification requirements of the Immigration and Nationality Act and IRCA.   Pfizer is an E-Verify employer. Sunshine Act Pfizer reports payments and other transfers of value to health care providers as required by federal and state transparency laws and implementing regulations. These laws and regulations require Pfizer to provide government agencies with information such as a health care provider’s name, address and the type of payments or other value received, generally for public disclosure.  Subject to further legal review and statutory or regulatory clarification, which Pfizer intends to pursue, reimbursement of recruiting expenses for licensed physicians may constitute a reportable transfer of value under the federal transparency law commonly known as the Sunshine Act.  Therefore, if you are a licensed physician who incurs recruiting expenses as a result of interviewing with Pfizer that we pay or reimburse, your name, address and the amount of payments made currently will be reported to the government.  If you have questions regarding this matter, please do not hesitate to contact your Talent Acquisition representative. ADDITIONAL LOCATIONS CONSIDERED: Peapack, NJ; New York, NY; Collegeville, PA and any Pfizer Europe site. Other Job Details: Eligible for Employee Referral Bonus Interested Candidates please apply at: https://pfizer.wd1.myworkdayjobs.com/PfizerCareers/job/United-States---Connecticut---Groton/Senior-Manager--Blockchain-Engineer_4701801-1

As a Frontend Engineer You : …are passionate about Frontend Development and have a proven affinity with UX and visual design principles. …have previously worked on blockchain projects. …have the magic to turn designs into well-functioning responsive products. …are quick to reach consensus with other team members, which allows you to work in a more streamlined and performance-focused manner. …will be part of a small team that consists of passionate, intelligent people with a pragmatic nature who are always willing to share their knowledge.   The way we work and Who we are,  We: …work with solidly established processes that let you focus on what you do best. …give everyone a chance to be heard, shape solutions and see their impact. …maintain a flat hierarchy that values everyone’s contribution and brings out the best in all of us. …highly value positive energy, diversity and inclusion. …believe in clear communication and continuous learning.   This is you in a nutshell: You have at least 4 years of experience in Frontend engineering. Are able to integrate frontend with Ethereum web3.js library as a backend Work very closely with development and business teams and can articulate a long-term vision for maintaining and scaling our frontend projects Create trustworthy user experiences by building interfaces that are simple, easy to comprehend, performant and reliable Turn a vision into a tangible development roadmap and keep track of it at all times Add positive energy to every meeting, and make your coworkers feel included in every interaction. Translate UI designs, wireframes, and mockups into high-quality, well-tested code Write clean, maintainable code and testing environments. Understand frontend development frameworks, including (but not limited to): Java, React.js, Angular.js or Vue.js Estimate task durations and log project hours and have experience with Scrum/Agile Are okay with contributing to side projects, such as our corporate websites, UI, performance, etc.   We offer A friendly and modern workplace in the center of the city of Leiden, The Netherlands. The office building houses various amenities, including a gym, wellness area and swimming pool overlooking the city. We work with one of the largest NGOs in the world, creating the impact needed in the identity space for social and economic inclusion. You will be working with dynamic professionals and ego-free team players who value taking initiative and spearheading development processes. You can count on a competitive salary, creative freedom, and plenty of ways to increase your skills in an inspiring international environment. We also always have international events and trips planned throughout Europe, the U.S. and MENA region, where the core team is usually present; being an early team member makes you core! We are impacting the lives of billions of people, hence changing the meaning of being a “billionaire”! So are you the next Frontend Billionaire? Please Apply by emailing a resume with a cover letter to: jobs@tykn.tech

Blockchain Architect - LA or Chicago - Full Time Blockchain Developers, the leading blockchain recruiting agency, is seeking a Blockchain Architect for our client, an exciting, well-funded company that is disrupting the consumer credit world. We are creating both a new blockchain platform and the surrounding ecosystem of applications. You may work on one or both sides of the business and interact directly with industry partners. Job Responsibilities Craft a decentralized solution to reinvent the underpinnings of the global credit and identity verification and scoring systems Develop the back-end and front-end components of our network Design decentralized apps and API’s to handle sensitive and confidential identity and credit data Maintain a well-tested codebase with continuous integration and coverage reporting Champion an atmosphere of open-source contribution and code collaboration Must Have 4+ years of experience in systems development or backend development and a strong understanding of a statically typed language like Go, Java, or C++ Experience building and scaling decentralized and distributed systems (and understand the difference) A mastery of applied cryptographic principles (asymmetric versus symmetric encryption, digital signatures, hashing, message authentication, generating and safely transferring key pairs) Solid academic background in networking, relational databases, operating systems, and programming language design Strong history of contribution to or creation of open-source project Experience with complex deployment pipelines using tools like Chef, Ansible, Docker, and/or Kubernetes Additional Skills Industry experience in blockchain development (e.g., Ethereum, Solidity, truffle, bitcoin contracts, etc.) Familiarity building solutions in decentralized identity (e.g., DID, Hyperledger Indy, etc.) Previous experience in FinTech, including fraud, payments and credit Worked with product teams to understand how complex systems interface through the front-end with the eventual end consumers, and know how to pre-emptively make trade-offs that will simplify integration with real business needs Other Location: Los Angeles, CA Or Chicago, CA

Blockchain Developers, Inc., the leading blockchain recruiting agency, is seeking a Blockchain Engineer with a strong systems background and experience with the Ethereum Virtual Machine to help our client build their cutting edge cryptocurrency trading platform for highly sophisticated and demanding cryptocurrency traders across the globe. The ideal candidate will have blockchain development experience, with previous experience in a global financial services or fintech firm working on a trading platform and on large scale, high traffic web applications. Ideally you will have experience in or at least a strong personal interest and willingness to learn more about cryptocurrency. The Blockchain Engineer will be working on designing and building cutting edge technology solutions that do not yet exist today. Must have: 7 years experience formulating technology strategy and architecture Strong systems background with experience in Ethereum Virtual Machine High proficiency with client side JavaScript frameworks (preferably React/Redux), server side frameworks (preferably NodeJS), NoSQL databases (preferably MongoDB), and some exposure to relational database concepts Solidity programming experience Ability to integrate with and manage APIs exposing microservices (REST, JSON-RPC), including development and support of Java/JavaScript services Familiarity with event-based System of Engagement architectures Strong cryptography engineering or experience Strongly Prefer: Blockchain, web and enterprise related technologies such as go-ethereum/Solidity, Node.js, AngularJS, Python, Go, or Rust. Low-level application development in C++ or Go Wallet integration Web Technologies: JSON, HTML, CSS, JavaScript, and RESTful web services Tools : Git Operational linux and/or AWS experience a plus Location: New York, New York 1099 temp to perm - Full-time

Blockchain Developers, Inc., the leading blockchain recruiting agency, is seeking multiple Full Stack Application Developers for our client, reinventing the luxury auction house.   By joining our client, you will have the unique opportunity to make a huge impact working with distributed applications that are changing the way auctions take place. Not only innovating how auctions take place they're also revolutionizing the intersection of blockchain, cryptocurrency, and commerce. If you like freedom, interesting challenges, and being a punk this is match made in heaven. Responsibilities: The Full Stack Application Developer position is an integral part of our clients software development team. This role will utilize your software design, analysis, and programming skills to enhance their user-facing  products. You will be working with a team of application developers to deliver features on a large web based application with an intuitive interface that hides the complexity of our backend systems and underlying blockchain technology. You will be working alongside other engineers and developers working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and the creation of quality products is essential. Must Have: Bachelor’s degree in Computer Science or equivalent experience 6+ years of overall IT experience 4+ years of experience building mobile and web apps Experience developing backend APIs Github link or similar Have a strong interest and understanding of blockchain technology Strongly prefer: Understand and implement security and data protection Front-end (CSS) framework like Foundation or Bootstrap Back-end programming languages like Node.js, Jade, EJS, Jinja, Python, Java, .NET, Node.js, etc. (bonus for solidity) Advanced JavaScript libraries and frameworks such as Web3.js, AngularJS, KnockoutJS, BackboneJS, ReactJS, DurandalJS etc. CSS Preprocessors like Saas or LESS Work experience with web platforms like AWS Some Of Your Benefits... All of our full-time employees are eligible for great benefits; Competitive package including salary, cryptocurrency token allocation, and company matches to a 401k plan Generous vacation policy Peace of mind with terrific medical, dental, and vision plans alongside family leave Location: New York, New York W-2 only

The   Senior Software Engineer   role is to develop mobile and web applications using React and React Native. As a Senior Software Engineer you will help on the architecture design, build the mobile version of our product, and be in constant collaboration with our backend and UX teams and developing web applications using React and React Native. You will collaborate with the UX team in designing the user interface as well as implementing the product and connecting to back end services. In this position you will work with other motivated and talented developers with a significant impact on design, architecture and direction. We are looking for a passionate and professional software engineer who enjoys doing things the right way. You should have a deep understanding of JavaScript, React and React Native. Additionally you should understand user experience design, code, security, quality and sustainability. As a software professional, you understand the importance of coding clean, estimating, taking deadlines seriously, and interfacing well with other team members, teams, and end users. We’re looking for someone who knows the ropes, and has previously released React Native mobile apps for both Android and iOS. Also, you will be working for a well-established cryptocurrency community, and it’s important to keep the user experience at the forefront of your mind. Responsibilities Contribute to the development of the DashPay Wallet mobile interface which will enable users to easily access all features of the DashPay DAP, including user accounts, contacts, and standard "wallet" functionality. Contribute to the redesign and refactoring of the existing DashPay Wallet codebase both to support the DashPay DAP architecture and for enhanced maintainability Participation in the development, testing and deployment of new releases Work collaboratively in a team environment to reach ideal outcomes and solutions Apply creative solutions to eliminate limitations of cryptocurrency and provide improved user experiences Minimum Qualifications Proven, demonstrable experience building and delivering React Native mobile applications Other experience writing client-side JavaScript using React, React Native, Redux (or equivalent technologies) Solid knowledge of JavaScript Knowledge of object-oriented design principles Experience with open-source and distributed software development projects Must be competent with Git and Github (including rebasing, resolving merge conflicts) Ability to work remotely and deliver without constant supervision Ability to commit to a timeline, stay on task, and ensure sufficient availability to complete the assigned tasks in a timely fashion Good communication skills, a positive attitude, and self-motivated Fluent in English, written and spoken Desired Qualifications Knowledge and experience of blockchain technologies Understanding of asynchronous programming, including its quirks and workarounds Experience with Continuous Integration systems (we use Travis-CI) Location / compensation Location can be anywhere / remote Compensation will be at competitive rates and based on experience and location Apply directly with this link, or use blocktribe.  https://hire.withgoogle.com/public/jobs/dashorg/view/P_AAAAAADAAADIu79MH0Qqck?trackingTag=blocktribe

Blockchain Developers, Inc., the leading blockchain recruiting agency, is seeking a Sr. Full Stack Engineer for our client, building a world-changing platform for developers and blockchain companies. Our client will ICO soon. if you really believe in a decentralized world, and want to make a difference, you could be right for our client. They are building a platform for developers to monetize their work. Their platform is a fundamental revolutionary protocol (rights management) that will enable enable developers to build smart contracts that can transact and exchange things. For example, an autonomous vehicle will be able to buy its own fuel with a smart contract - with no people involved. Must Have: 5 years or more experience writing code and working with a team A degree in computer science or related area Full stack engineer with experience with a range of front-end and back-end technologies Experience with one or more of the following languages: C++, Go, Javascript / Typescript, NodeJS, Solditity Open to evaluating, learning, and using developing frameworks. Some examples we like: React, Vue, MobX, GraphQL.   Strongly Prefer: Blockchain experience Experience working on Ethereum smart contracts Experience with EOS (web assembly) Experience in a startup environment Other: Prefer local to San Francisco Bay Area

Our client, a rapidly growing international FinTech company, that is creating the first open exchange for borrowing and lending digital currencies and assets, is seeking a Frontend Developer based in Gibraltar. As the Frontend Developer you will be working on a new project and will collaborate with fellow engineers, UX designers, product managers and other cross-functional teams to design and deliver a compelling and intuitive front-end. This role provides a fantastic opportunity for a talented and passionate Frontend Developer who truly understands user behaviour to develop their career within an entrepreneurial company that possesses a culture promoting values of teamwork and innovation. Skills and Requirements: • You will be responsible for developing significant frontend architecture maintaining and developing a service-oriented backend. • You’ll be required to analyse and identify bottlenecks in performance. • Designing secure, stable and robust architecture will be essential to your success in this role. • You’ll collaborate with frontend engineers to add support for API functions and user interfaces. • Working alongside smart contract engineers to integrate the interaction with blockchains will be a key requirement of the role. • You’ll be required to collaborate with platform engineers in order to successfully deploy services into the cloud. What you’ll need to succeed: • You possess proven experience in software development, developing significant frontend architectures and are passionate about delivering and maintaining clean extensible code. • You have a natural ability to understand user behaviour and incorporate intuitive designs and workflows into your work. • You prefer working in a team environment where you share code, choose technologies, build common libraries, components and establish common team practices. • You enjoy collaborating closely with UX designers and product managers and are keen to contribute to the quality and features of the product. • Outstanding server and client-side JavaScript, CSS3 and SASS experience, with experience of React/Redux stack, Python and D3js advantageous. • You have strong experience of best practice in Frontend Test Driven Development (TDD). • You possess a strong interest in blockchain technology and cryptography. • You possess excellent communication skills with the ability to work alongside various business stakeholders. • Curiosity, drive, enthusiasm and a willingness to learn new technologies are all personal attributes that you have in abundance.