Jobs worldwide in DLT, Blockchain, DeFi, and Web3

Techfellow has always been at the forefront of DLT, Blockchain, Digital Assets, Smart Contracts, DeFi solutions/services, and wider Web3.

We’d like to share a small, but varied selection of urgent opportunities we currently have available. The common denominator is a passion (and hopefully commercial exposure) of any of DLT, Blockchain, dApps, PoS, Crypto/Tokens, and DeFi. That will be complimented by credible expertise in technologies around distributed data-driven applications/systems, P2P maths-based transactional systems, quantitative engineering, cryptography, decentralised protocols, contract-oriented languages/tools/IDEs, concurrent/functional languages, and even CeFi.

Click on any the roles below to be taken through to the full job description. Alternatively, for an exploratory chat about opportunities in this space, contact Paul on +44 207 993 5144 or


Early-stage start-up building exciting DeFi products delivering an investment platform for both institutional and retail investors. Two roles: a strong Back-end Developer to develop the protocols and dApps using EthereumVM and Solidity, and a solid UI Developer with React and web3.js (could utilise a contractor in short-term). Greenfield opportunity to be involved in core design and implementation.

Back-end Engineer / Front-end Engineer

Innovative Blockchain network services/solutions provider running a highly efficient distributed platform infrastructure for servicing validators. Two distinctive roles available: firstly a Software Engineer with strong Rust and/or Go abilities who will help develop an API as PoC (MVP underway) to a product suite of APIs enabling blockchain network interconnection. Developing middleware to allow wallets and dApps to move value across networks. Cutting-edge development working with emerging protocols and communication links. Previous experience in blockchain engineering or the DLT space is not essential for this position. Secondly, a Platforms Engineer with strong CI/CD, Kubernetes, and systems engineering with the likes of Python/Go/Rust. Set the standards of significant upgrades to the infrastructure and develop software components to enable those. Overcome challenges such as scalability/more efficient key management; validator on-boarding; systems provisioning and monitoring; general automation and continuous improvements.

Blockchain Engineer / Platforms Engineer

Digital capital markets Solutions Client Relationship Manager with a passion for DLT. Key role within this market’s infrastructure firm driving the development of new products/services; delivering clients with innovative B2B/B2B2C solutions. Acting as SME in assessing business requirements; liaising with internal/external stakeholders to deliver these concepts/solutions to both existing and new client/customer bases. Experience of developing/selling solutions from either professional services/consultancy angle or within an investment bank/trading firm.

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New York City

Principle Security Engineer – Product Security - Pioneering Cryptocurrency Exchange – Remote in the US or NYC. Senior (8+ years’ experience). Role will be 70% hands-on providing application security assessments with 30% leadership/mentorship, evangelising security. Knowledge of blockchain and cryptocurrency is highly sought-after, along with coding in C++, Go, Python or preferably Scala. Part of the role will be to develop and share research in the area of product security, vulnerability management, and blockchain/cryptocurrency, while leading the design and implementation of secure and resilient applications.

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Senior Golang/Ethereum Developer – leading pure play software solutions firm require an exceptional back-end developer with a track record of designing/building secure applications in Go. Key role within staking solutions business delivering market infrastructure clientele with a complete secure cloud-based transactional solution with full risk controls/compliance functionality. Must have expertise of public cloud application deployment, P2P networking, Ethereum protocols, cryptography, and consensus mechanisms.

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Jersey City/NJ

Director level 'technical' role within the innovation labs division of this leading financial services infrastructure firm. This varied role requires a mixed skillset, that being a passionate hands-on DLT developer/technologist (with cloud/aaS and varied DLT vendor tools/platforms), strong BA skills for requirements analysis across multiple business and product areas, coupled with proven agile project management and SDLC delivery. Demonstrable, credible, DLT/Blockchain studies/research contributions in field of expertise. Financial services experience is clearly advantageous but not required.

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Senior Software Engineer – join this global investment bank’s R&D engineering team in design/development of innovative digital data-driven solutions. Expertise in DLT/blockchain/digital assets solutions, STEM qualification with 5 years’ Java, Python and/or C/C++ in agile distributed systems development. Strong experience in data structures, algorithms, constantly designing for ultimate performance and resiliency. Any expertise in financial products, DeFi, AI/ML/data analytics would be extremely advantageous.

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