10 Developer/Engineer Smart Contract | Blockchain jobs

Blockchain Developer - Startup Blockchain Developer sought by an exciting and innovative Tech startup based in London. This is a fantastic opportunity for an experienced developer who has had some professional exposure to Blockchain projects who wants to continue to grow in this space.  You will be joining a bright, growing team to help revolutionise the online gaming space.  As a Blockchain Developer you will be required to demonstrate skills ideally in both Solidity and web3.js, but also have good fundamentals in Javascript. Some prior experience in Python, Go, node.js or C++ will also be adventitious. This opportunity not only holds excellent potential for rapid career progression, but also allows a step into a growing business at ground level. A Developer who is passionate about delivering high quality results, keen to work in a highly collaborative, startup environment and who is highly motivated and open minded to problem solving and technology is sought. Ideal Skills: Javascript fundamentals Experience writiting smart contracts in Solidity  web3.js Python/Go/node.js/C++ advantageous Start date: ASAP Contract: Permanent Location: London Interview times: ASAP

Job   Title : Lead Ethereum Developer Location : San Francisco, CA Experience : development Type : W2, Full Time /Perm Sponsorship : No Salary : $120K / Year DOE and negotiable Other compensation : equity would be 30%+ DOE Relocation : Yes BlockchainCareerbuilders, the leading blockchain recruiting agency, is seeking a Lead Ethereum Developer who will be the CTO and Co-Founder to develop a protocol for the telecommunication industry.  Our client is bringing a business to business solution to snuff out rampant international fraud within the telecommunications industry by building a blockchain.   The Lead Ethereum Developer will be a hands on developer, coming in on the ground floor (employee #2), to create an imbedded B2B protocol deep within the telecommunication infrastructure. We need someone who has deep technical expertise to build and launch the blockchain for this Software as a Service (SaaS) that will never need an ICO, but rather has VCs that are ready to invest because this is a real problem with a real solution. There are billions of dollars lost every year to international telecommunication fraud. Qualifications Must have : 2+ years as a strong software developer with deep technical knowledge especially in backend and building infrastructure 1+ year(s) experience in hands on blockchain development in Ethereum and Solidity, (proof of concept knowledge)  Strongly Prefer : Leadership experience building in blockchain Experience working on enterprise software, B2B products and SaaS Interest in or knowledge of Cosmos SDK and Truffle/MetaMask Experience with IPFS and/or distributed file sharing mechanisms Experience working in a startup environment and also having experience in enterprise sized companies is preferred

Job Title:   Full Stack Developer - Ethereum DAPPS Location:  Sausalito, CA or Seattle, WA or Remote Experience:   5+ years Type:   Full Time / Temp to Perm Sponsorship:   Maybe DOE,  prefers no visa Salary:   $120K / Year Other compensation:   Equity, Tokens Relocation:   Yes Job ID:   REF7K BlockchainCareerbuilders, the leading blockchain recruiting agency, is seeking a Full Stack Developer - Ethereum Dapps for our client, an exciting, well-funded company that is disrupting the healthcare world. Our client is designing and building decentralized applications and a fully decentralized protocol for health insurance. The perfect candidate has an in-depth understanding of distributed systems, blockchain, and hands-on experience architecting and developing on existing blockchain smart contract platforms. Qualifications Job Responsibilities: Participate in design and implementation of our fully decentralized protocol for health insurance. This includes developing, testing and deploying the backend and smart contracts needed to do so. Design and develop any APIs and/or SDKs required to support these services Own monitoring, alarming, analytics, and reporting on all services you build, ensuring high performance and responsiveness Must Have: 6 years or more experience writing code and working with a team Experience writing Ethereum Dapps in Solidity Experience as a full stack engineer with a range of front-end and back-end technologies Strongly Prefer Open to evaluating, learning, and using developing frameworks. Examples include: React, Vue, MobX, GraphQL. Comfortable working in a devops/CI environment Code (provide GitHub link or smart contract addresses) that demonstrates your ability to build or architect distributed systems and/or blockchain code Hands-on experience creating smart contracts, or building on blockchain Interest and some understanding of second layer security solutions such as sMPC, zero-knowledge, etc. Additional information All your information will be kept confidential according to EEO guidelines.

You will work with the most prominent blockchain teams to improve their security by educating them on best practices, reviewing their code, thinking through their architecture and assumptions and supervising their bug bounties. You will strive to automate your work by improving our tools and developing new ones, so you can focus on the hardest parts of securing a system. By publishing your findings and contributing to open-source, you will make a name for yourself in the blockchain security space. Responsibilities: Work directly with the developers of the most serious teams in the blockchain industry to audit their code and secure their products Contribute to our security tools and create new ones, following good engineering practices Conduct security research and publish your findings in technical blog posts Improve our processes and offering and strive for the satisfaction of our clients Requirements: Strong interest in and understanding of blockchain protocols and smart contract platforms Fluency in Solidity and Python Experience with penetration testing, vulnerability scanning, threat modeling or similar Basic knowledge of cryptography Proficiency with Linux and Git Good written communication skills Desirable: Experience auditing Ethereum smart contracts Knowledge about the Ethereum Virtual Machine and the Yellow Paper B.Sc. or higher in Computer Science or another relevant field Benefits: Comfortable office with a beautiful view or the possibility to work remotely 25 days of Paid Time Off A culture of continuous learning encouraging conference visits, offering bi-weekly “Lunch & Learn” and exposing you to new languages, frameworks, and projects Public exposure for your work and achievements through blog posts and conference presentations The best equipment money can buy, so you can do your job unhindered If this profile fits you and you are excited about working at a blockchain startup that provides real value, please contact us at jobs@chainsecurity.com

We are looking for a Senior Engineer, familiar working with Blockchain to take responsibility for developing cutting edge wallet applications. About Fintricity: Through Fintricity, our core consulting brand, Fintricity Group (FG) has been at the forefront of technology and digital transformation for over 15 years, most recently with a focus on bringing innovation to leading brands through expertise in big data, analytics and technologies (such as blockchain and IoT) that are transforming operations, products, services, business models and sectors.   Pivoting to a blockchain services and venture firm, Fintricity Group is working on a range of exciting new projects and ventures to build new decentralised business models, technology platforms and disrupt and transform multiple industries. Why Us?   At Fintricity you will join a dynamic, constantly evolving firm that pushes you to grow, lead and innovate.   You will be client- focused and work on technologies that will be put to immediate use. You will be part of a team whose members are encouraged to speak up with an idea or challenge existing views, regardless of title or tenure. Fintricity’s Technology Team   is organised in small, focused, agile groups, that either work closely with business units to deliver value or develop core technologies that lever the product teams.   Our environment fosters innovation and promotes entrepreneurial spirit, and we use top of the line tools. Our culture Fintricity is a vibrant and progressive company that blends the entrepreneurial spirit of a startup with the profitability and stability of a long-running business. Our company is built on a culture that fosters teamwork, individuality, and creativity. We care deeply about cultural and gender diversity. We go to great lengths to foster a supportive, caring environment within a flat organisational structure. We value staff with a sense of fun and adventure, who are optimistic, and customer focused. Above all, you must agree with our strong emphasis on business integrity. What you’ll be doing: Lead  the development of new Ethereum based solutions as well as Solidity smart contracts. Create tests to accompany produced code. Write code with security and resiliency in mind. Lead and work within Agile and DevOps frameworks. Work in partnership with Web Services and User Interface developers. Develop in alignment with overall architecture design. Assist in incident and problem resolution as appropriate. What you’ll need: Experience developing scalable web and/or mobile apps for enterprise/consumer software initiatives. 7+ years experience developing with Java. Understanding of Blockchain technology, especially Ethereum. Experience of developing Ethereum smart contracts written in Solidity. Experience of working in Agile projects with highly automated DevOps. Experience in modern test techniques such as Test, Behaviour & Acceptance Testing Driven Development (TDD, BDD & ATDD). Experience of developing highly secure and resilient code. Experience of collaborating with User Interface developers. Interest in blockchain and enthusiasm for working in a space full of unknown unknowns, pivoting as needed, and being comfortable with not knowing the end state is a must. Teamwork, flexibility, initiative, communication and organisation competencies are required.   Additional desirable experience: BS/MS in Computer Science or a related field. Banking technology experience is an advantage but not essential. Experience of full-stack development, especially with Angular and Node, is an advantage. 5+ years client side development in iOS Swift and Objective C. Deep expertise in REST and RESTful APIs. 5+ years developing with PHP/Python plus other combinations. Experience of incident and problem resolution in production environments. Experience of collaborating with Web Services developers, and UX and UI designers. Diversity & Inclusion: Fintricity is an Equal Opportunity Employer.   We respect and seek to empower each individual and support the diverse cultures, perspectives, skills and experiences within our unique organisation.

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 Blockchain Developer to join our team and help us bridge the physical world to the blockchain. You will be responsible for the whole blockchain part of the AnyLedger stack. Initially you will work with Ethereum, HyperLedger and IPFS nodes. Responsibilities - Handling smart contracts and interactions with blockchains - Further improve our decentralized device management solution Requirements - Previous Ethereum or HyperLedger experience Optional Requirements: - Interest in IoT security space - Previous startup experience - 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.

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.

We're looking for a software engineer with smart contract experience. You'll be working with the rest of the team to build smart contracts for internal use as well as consulting clients. Responsibilities Creating new smart contracts in Solidity and the Ethereum blockchain. Ensuring the smart contracts are safe by using the latest best practices in the industry and avoiding well-known bug classes. Staying up-to-date with latest breaches and practices in the field. Testing smart contracts for security and robustness by writing unit and end-to-end tests. Reading smart contract code for auditing purposes to ensure they behave as intended. Working with our front-end team to connect our web services with blockchains and smart contracts. Working with our cryptographers to ensure the smart contracts correspond to the desired theoretical protocols. Integrating smart contracts in node.js using web3 and truffle. Skills & Knowledge An illustrative GitHub portfolio. Professional knowledge of at least one programming language. Good experience with Javascript and node.js. Exceptional skills with web3 and truffle. Exceptional Solidity skills. A good understanding of the Ethereum blockchain and blockchain technologies in general, as well as the underlying security model. Qualifications Pursuing or having completed a Computer Science or related degree, or equivalent professional experience.

We are looking for passionate Blockchain developers having zeal for emerging technologies with 0 - 4 years of experience. Required Experience, Skills and Qualifications: Should have knowledge on Ethereum Blockchain. Writing smart contracts in solidity language. Strong experience on Web3 library. Should have knowledge of Cryptography. Should have working knowledge with Dockers, Gcloud, AWS. Should be good with Node.js, Python, Go, MongoDB, MySQL. Knowledge of CI/CD is a plus. Version controls like - Github, Gitlab and Bitbucket are a plus.