53 Developer/Engineer | Blockchain jobs

DevOps Engineer – Berlin - Blockchain DevOps Engineer – Berlin - Blockchain An exciting opportunity to work for one of Berlins most highly respected Blockchain start-ups who are using blockchain technology and smart contracts to reduce costs, increase transaction speed and make the service more secure whilst increasing the scope of investment opportunity around the world. We are looking for candidates who have: Strong DevOps background Kubernetes and Docker   Desirable Skills & Knowledge Blockchain knowledge What we are offering Ability to work within the Blockchain space and upskill Being a part of a small but fast-growing team who are keen on expanding the scope of investment around the world using Blockchain Technology Partially remote work Salary: Competitive Relocation package, if applicable

Senior Full-Stack Engineer – Berlin - Blockchain Senior Full-Stack Engineer – Berlin - Blockchain An exciting opportunity to work for one of Berlins most highly respected Blockchain start-ups who are using blockchain technology and smart contracts to reduce costs, increase transaction speed and make the service more secure whilst increasing the scope of investment opportunity around the world. We are looking for candidates who have: • Strong JavaScript (React / Node) background 3-5 years • Experience in a start-up environment Desirable Skills & Knowledge • Blockchain knowledge What we are offering • Ability to work within the Blockchain space and upskill • Being a part of a small but fast-growing team who are keen on expanding the scope of investment around the world using Blockchain Technology • Partially remote work

The Organisation: Shivom is a leading healthcare technology company focused on developing the world’s largest precision medicine data hub and healthcare services platform powered by blockchain technology. By leveraging the latest advancements in genomics, cryptography and cutting-edge machine learning algorithms, Shivom aims to democratize genomic sequencing in-order to provide individuals with a secure platform that automates their health and wellness.  To date, Shivom has established multiple global relationships with blockchain companies such as SingularityNET, Spherity and Ocean Protocol, as well as publicly-traded diagnostics companies and governments such as GTG Labs and the Government of the Indian State of Andhra Pradesh.  The company is comprised of various accomplished executives, and a unique Innovation Council, whom collectively have decades of experience in industries ranging from genomics, venture capital, healthcare, and consumer technology.   Duties/Experience Co-architect our solution using Hyperledger Fabric and Ethereum, and develop in alignment with overall architecture design. Proven experience in blockchain development, 2-4 years preferably in Ethereum / Hyperledger Fabric, and a deep understanding of the fundamental design principles behind distributed-ledger applications 1+ years in Hyperledger Fabric architecture, including chaincode contracts that communicate with a web server1+ years in security engineering, including building, pen-testing and deploying encryption/decryption technology, good understanding of cryptography and security concepts, privacy-preserving data storage, sharing and processing Strong programming experience in Go and C/C++; 1+ years writing code in Go Lead and work to develop, test, launch and scale your code efficiently and at a high work rate,  within Agile and DevOps frameworks, continuous integration and testing environment, using technologies such as TravisCI and Postman Constantly sell your technical vision to others both inside and outside the company, and contribute to the success of our platform by evangelising our product, our team and our brand in various technical arenas Proven experience of 10-15 years development experience A deep understanding of test driven development, including writing unit tests with a framework such as JUnit or JS frameworks such as Mocha Experience in creating, and connecting to, RESTful APIs. Experience with repositories such as GitHub 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. Work in partnership with The rest of the development team Assist in incident and problem resolution as appropriate. Experience developing scalable web and/or mobile apps for enterprise/consumer software initiatives. Proven experience of developing with Java. Experience in modern test techniques such as Test, Behaviour & Acceptance Testing Driven Development (TDD, BDD & ATDD). IT security and infrastructure Experience setting up and operating cloud environments eg Azure or Google Cloud Start-up mentality: willingness to wear many hats and strong desire to build the business from ground up

We’re looking for energetic, highly-talented Junior Blockchain Developers to join our team. We’re working on building an innovative new blockchain designed to facilitate investments in renewable energy. We think it could change the world. We’re a young and very rapidly growing company. You’ll rapidly gain a wide variety of knowledge and experience by learning from experienced blockchain developers. We’re based in Toronto and have a preference for developers in North America – if you’re based in or around Toronto in particular, we’d love to hear from you.    While we can provide extensive training, the ideal candidate should already have a strong interest in the blockchain space. Skills Required - Ethereum (Solidity, Truffle/Ganache or Remix), NodeJS Desired - Docker, Docker Compose, Web3 Bonus points for - Drizzle, React.JS We don’t expect candidates to have a strong foundation in all the above. If you’re interested in the role and think you could learn and adapt quickly, get in touch even if you’re missing a few of these. If you think you’d be a good fit, please get in touch with a copy of your resume.

Plexus are currently seeking a Lead Developer to join an emerging Fintech startup who are creating a next-gen ecosystem for tomorrow’s decentralised economy.  Their goal is to offer trusted, reliable and secure services that customers of all walks can rely on for their everyday banking.  For this role, I am looking for an experienced Node.js Developer who is not afraid to get their hands dirty writing code alongside leading the team from the front. Essential experience: Experience in JavaScript is essential, ideally Node.js Interest in Finance/Blockchain space Keen to learn and apply latest technologies Strong communication skills This is a permanent opportunity paying £80,000 - £120,000 per annum, based in the city of London.

I am searching for mid and senior level Java Developers to join an innovative start up based in central London. You will be working alongside experienced engineers in the Java/Blockchain space and will have the opportunity to develop your skills in an excellent working environment. You will be part of a new project from conception to roll out. With an opportunity to extend your contract and be part of upcoming projects also. You must have: 2-10 years Java Development Backend capability Advanced knowledge of Java Blockchain experience (ideally commercial but experimental will be considered) This opportunity is perfect for someone wanting to expand their knowledge and have key input into the development of innovative new projects.

Blockchain cybersecurity specialist  needed to work on a major project for a leading bank who are researching how STRIDE threats can be mitigated in relation to the transfer of digital assets on the blockchain. You will be reporting to C-suite level on how to best develop and architect a secure method of asset transfer on the blockchain, helping solve one of the pressing questions and concerns on the real life implementation of the technology.   You will: Have an understanding of blockchain and the various protocols available (both permissioned and permissionless)  Proven track record in modelling and mitigating STRIDE threats Ability to convey highly complex technical problems and solutions in an easy to understand way Experience working with or on distributed systems, ideally those associated with private chains Location: Frankfurt Length: 6 Months likely to role Rate: Above average 

Software Engineer – Berlin - Blockchain Software Engineer – Berlin - Blockchain An exciting opportunity to work for one of Berlins most highly respected Blockchain start-ups who are using blockchain technology and smart contracts to reduce costs, increase transaction speed and make the service more secure whilst increasing the scope of investment opportunity around the world.   We are looking for candidates who have: Passion for Blockchain Technology Experience in a start-up environment The ability to adapt quickly and eager to learn   Desirable Skills & Knowledge   Experience in Full-Stack JavaScript Development JS experience is required Solidity Docker RESTful API   What we are offering   Ability to work within the Blockchain space and upskill Being a part of a fast-growing team who are keen on expanding the scope of investment around the world using Blockchain Technology  

Job Description Job Title:  Senior Back End Engineer - Blockchain (Remote) Location:  Remote Worker must live within USA or Canada Travel:  5% / year Experience:  5 - 8 years as senior developer Type:  Full time, permanent / W2 preferred, 1099 is possible DOE Sponsorship:   No Salary Range:  150K to 250K / year DOE Other compensation:   ​​Bonus, Benefits  BlockchainCareerbuilders.com,   the leading blockchain recruiting agency, is seeking a Senior Back End Engineer for a preferred client (with a top 100 token), who is creating a new blockchain platform to work with the whole of the internet. Experience building an (SOA) service oriented architecture or cloud infrastructure. The key goal of this position is to play a core role in the development of a decentralized platform for dApps. This cutting edge team is building a foundational core blockchain infrastructure and plans to build a platform on top of that, which abstracts the complexities of decentralization and blockchain. This allows other developers to build dApps quickly and efficiently with a set of APIs and services to leverage.   Job Responsibilities: Bring your architect and systems development expertise to develop the new framework that will sit on top of all other platforms Work with thousands of developer contributors from around the world, creating the new internet and a blockchain platform that will work with all coding languages Participate in the R&D side, as the client is constantly looking for new blockchain technologies and better decentralized architectures. Participate in the continuously growing, learning and development of technologies Qualifications Must Have: 5 - 8 years of senior level development experience using open source technologies Experience building an SOA (Software Oriented Architecture) or cloud infrastructure 6 + months developing and learning about blockchain, any platform, a variety is best Strong knowledge and experience in internet security networks and/or cryptography Github contributor with repository to share that shows development of framework(s) Strongly Prefer: Hands on experience with blockchain technologies and frameworks Experience with consensus algorithms, TEE or ARM, is preferred Blockchain experience up to POC completion is preferred Experience with cryptography and crypto currencies is a preferred BS/MS Degree in Computer Science, Engineering or related subject Ability to speak Mandarin Experience with public speaking would be nice in order to be the platform evangelist to spread the word at meetups, conferences, events, etc., but it is not a requirement Experience working successfully from a remote office/home Additional Information All your information will be kept confidential according to EEO guidelines.

Software Engineer (Node.JS) – Remote - Blockchain Software Engineer (Node.JS) – Remote - Blockchain - This is a rare opportunity working as a Remote Node.JS Engineer within the Blockchain space The team is built up of strong academics who are passionate about the technology they are building and are looking to add like-minded people to their team. They are currently creating Blockchain technology around smart contracts. The start-up has created their own programming language for smart contracts and are looking for Node.JS engineers with an entrepreneurial spirit. In this role you will be delivering high-quality software, building out production level code and managing the development lifecycle through to testing and deployment. Looking for: Developers who have been working on building high-performance, secure, RESTful applications People who are passionate about the technology they are using and are always keen to learn and adapt to new challenges Experience in programming language such as Node.JS Experience with DevOps (e.g. Docker, Kubernetes, Chef, Puppet, Jenkins etc) Experience with Cloud (AWS ECS, Lambda, Azure, Google Cloud etc) Benefits You will have the opportunity to work on and up-skill in brand new Blockchain technology Remote working option  

Compiler Engineer – Blockchain – Remote Compiler Engineer – Blockchain – Remote - This is a rare opportunity working as Remote Compiler Engineer within the Blockchain space The team is built up of strong academics who are passionate about the technology they are building and are looking to add like-minded people to their team. They are currently creating Blockchain technology around smart contracts. The start-up has created their own programming language for smart contracts and are looking this engineer with experience (commercial or academic) with compilers/WASM. In this role you will be translating their bespoke language over to the likes of Corda, Tezos, EOS, Hyperledger, Ethereum. Looking for: Developers who have been working on compilers ranging from open source to academic to commercial experience People who are passionate about the technology they are using and are always keen to learn and adapt to new challenges Degree qualification ideally PhD   Benefits You will have the opportunity to work on and up-skill in brand new Blockchain technology Remote working option

We are looking for an energetic blockchain developer to work on Hydro - an Ethereum-based dApp toolkit and ecosystem. An ideal candidate wants to change the world and believes strongly in decentralization and public ledgers! Please be very familiar with development on Ethereum and have conceptual knowledge other blockchain platforms. You will work on creating underlying blockchain infrastructure as well as implementations and end products on top of that infrastructure. Example projects include: - Development around ERC 1484, a Digital Identity Standard proposed by the Hydro core team ( https://erc1484.org ).   - Development around meta-transaction infrastructure via mobile apps.   - Development around document-signing frameworks and associated infrastructure.   - Development at the cutting edge of blockchain-driven payments infrastructure.   - Development of dApps using React and React Native.   - Development of APIs that interface with the blockchain. You can learn more about our development work from our GitHub ( https://github.com/hydrogen-dev ) and weekly developer updates ( https://medium.com/hydrogen-api/tagged/dev-update ). Requirements:   - 2+ years of engineering experience   - Very strong knowledge of blockchain coding and concepts, particularly in relation to Ethereum   - Very strong background in Solidity, Web3, Javascript/React. Java and/or Python a big plus!   - Strong knowledge of APIs and the startup landscape   - Strong financial services knowledge   - Very strong commitment to an open and decentralized financial services landscape Send over some sample code and let's chat!

Your Mission We have multiple openings for software engineers in our brand new London office. These are in a range of teams including fraud, platform, payments, shield, onboarding, and crypto-security. With over 40 engineers based in our Cape Town office, you’ll be joining a group of highly motivated experienced developers who you’ll work collaboratively with across our currency exchange, fraud, payments and compliance pods. As a small company operating on a global scale, you’ll immediately see how your contributions directly impact both our internal users and client experience. We make decisions based on facts, not fiction. Many of the problems we’re solving result in genuinely trail blazing solutions which can’t be found on StackOverflow; so we’re looking for an experienced engineer that thrives on working in a complex domain. We use Go, microservices architecture (gRPC) and AWS, but if you come from a Java, Python or other relevant language we’ll help you get up to speed with our comprehensive engineering on-boarding program. How we work We succeed as a team. Our teams are split into pods, each of which focuses on a specific aspect of our product. Any engineer is able to deploy to production, and we deploy multiple times each day. Your pod will include a product owner, back end engineers, Android and iOS developers, and web developers who each bring a unique perspective to the problem you’re all solving. A typical day Join the pod’s daily standup to share progress and remove blockers Collaborate with other engineers on the design of a new payment integration to launch to a new market Write clean, well-tested code that directly affects users, the company and the Bitcoin ecosystem Grab lunch with the company (we provide lunch Monday - Thursday) Coach a team member by giving feedback on their pull-request What’s in it for you This is a fantastic opportunity to learn more about cryptocurrencies, blockchain, emerging and developed markets, and scaling a global business. We provide great benefits and the autonomy to conceive and execute your own projects. Best of all you get to work with a diverse team of talented, ambitious and friendly people on something that will truly revolutionise the world. As a “Newnaut” we’ll fly you to Cape Town to meet the wider team, and go through our comprehensive onboarding program. We expect you to have a passion for blockchain and cryptocurrencies but we understand that this is a new industry so we’ll help you learn about how the blockchain works and understand all aspects of our business. What you’ll need Building a new financial system for the world requires a special breed of people working together with unusual skill, focus and determination. “ Moontality ” represents the ten core principles that underpin everything we do, setting us apart from the rest. As an experienced lead-level or senior engineer, you’ll have: A solid foundation in computer science in areas such as algorithms, data structures, and software design Extensive programming experience in an object-oriented language. We use Go but we welcome applicants who have strong experience in other languages like Java, Scala or C++, etc. Proven experience of building, shipping and supporting a product An interest in cryptocurrencies like Bitcoin Don’t be put off if you don’t tick all of the boxes – they’re a guide based on what we’d love to see but we appreciate that great software engineers have diverse backgrounds. This is a permanent position based onsite in our Oxford Circus, London office. You must hold the legal right to work in the UK, unfortunately we cannot offer visa sponsorship at this time and we do not work with recruitment agencies.

As a studio riding the blockchain wave throughout its early days, we are looking for someone that is comfortable with the change, a team player ready to roll up the sleeves and get the hands dirty. Key responsibilities: Build new things from scratch in the blockchain space Learn fast about new frameworks and protocols and go deep in the layers around blockchain (ex: Ethereum Smart Contracts, Cosmos, Blockchain Architecture, etc) Share knowledge internally and externally, as well as, the company’s vision, opportunities and challenges Can bring an entrepreneurial and collaborative spirit to the team Be a contributor to management decisions about the company Requirements: At least two years of experience as a software engineer Huge appetite for learning new challenging concepts and tools Excitement about blockchain future Any blockchain knowledge is a plus, the rest you will learn with us Conditions: Salary: 35£ - 50k£ based on experience After 6 months you will be eligible for equity Location: London or Berlin with availability to travel

Software Developer – Remote – Permanent – £90,000 + Benefits Plexus are currently looking for a Software Developer to join a Fintech startup that are building a next generation payment platform. The ideal candidate will have a keen interest in working on cutting edge tech, the drive to solve a range of interesting problems as well as the desire to be part of a great distributed team. Requirements 6+ year of experience Experience using Go/Golang, Java, Python and/or C++ Knowledge of AWS or Google Cloud Architectural experience in Docker or Kubernetes A competitive package is also included along with flexible working hours, fully remote working, a laptop and 30 days holiday (excluding bank holidays)  

Lead Developer (IoT Start-up) – London – On Site – Permanent - £70,000 – 90,000 + Bonus   Plexus are currently looking for a Lead Developer to lead the development and deployment of a greenfield cloud based supply chain application. This is an exciting and challenging opportunity to apply cutting-edge technology to revolutionising an iconic industry.   Job Role Working alongside the CTO and the lead architect, data team and wider design and engineering function you will be the technical leader for a squad ensuring all requirements are gathered correctly and understood by all team members. You will be responsible for the full lifecycle of services in which you will build from design through to implementation and into production.   Experience Need Proficiency in Go/Golang or similar back-end frameworks Experience with JavaScript and React/Redux or React Native Knowledge of GraphQL, Protobuf/Grpc and Kubernetes Excellent understanding in microservices architecture concepts, RDBMS and NoSQL database, container based architecture (Docker) and unix systems commands Location – Central London Start – ASAP Salary - £70-90k  

Principle Engineer (IoT Start-up) – London – On Site – Permanent - £90,000 - £120,000 + Bonus   Plexus are currently looking for a Principle Engineer to lead the development and deployment of a greenfield cloud based supply chain application. This is an exciting and challenging opportunity to apply cutting-edge technology to revolutionising an iconic industry.   Job Role You will join a small but growing team where you can expect the sort of varied work that only a start-up can offer. Working closely with the CTO, data team and wider design and engineering function, you will be responsible for designing and shaping a high level of architecture across the full suite of products.   Experience Needed An expert understanding of JavaScript Experience with React/Redux or React Native Knowledge of Go/Golang or similar back-end frameworks Proficiency in cloud native architecture, microservices concepts and intrastate management   Location - Central London Start - ASAP Salary – £90-120k + Bonus

Job Title:       Senior Full Stack Engineer - Java Location:       Chicago OR Austin Experience:   5+ years as software engineer, 3+ years in full stack Type:             Full time, permanent / W2 Sponsorship:  Yes, H1B Transfer - DOE Salary Range:  $150K - 200K+ / year DOE Other compensation:  Bonus, Benefit, Perks Relocation:  Yes - DOE Requirements BlockchainCareerBuilders, the leading blockchain and cryptocurrency recruiting agency, is searching for a Senior Full Stack Engineer for our client, a global cryptocurrency trading company providing 24/7 operations, with openings in Chicago and Austin. Come be an integral part of creating optimal trading and investment web based systems within the regulatory framework with the rapidly growing asset of cryptocurrencies. Job Responsibilities: Work in a collaborative team setting to establish and maintain best-in-class software systems to enable 24-hour global trading operations Design and develop trading systems, exchange connectivity solutions, monitoring systems, and tools to integrate core infrastructure services Work from high-level requirements and gain an intimate understanding of the business and work directly with traders and researchers on a daily basis Qualifications   Must Have: 5+ years of software engineering experience developing web based highly reliable, scalable enterprise systems 3+ years as a full stack engineer Strong coding experience in Java B.S. in Computer Science or equivalent degree   Strongly Prefer: Experience coding in C++ Professional script development experience, preferably python and javascript Testing at the unit, functional, and integration level Experience with inter-process messaging, microservice architectures, and API design Knowledge of network communication experience, including multicast and websockets Experience in fintech industry   Additional Information All your information will be kept confidential according to EEO guidelines.