51 to 75 of 76 Blockchain Developer Jobs in the UK

Title: Blockchain Engineer Department: Enterprise AI and Engineering – Blockchain Centre of Excellence Location: Cannon Street, London (Hybrid) Job Type: Contract About Fidelity International Fidelity International offers investment solutions and services and retirement expertise to approximately 3 million customers globally. As a privately-held, purpose-driven company with a … roles in the way that works best for them, our colleagues, our clients, and the business. We call this “dynamic working.” Department Overview The Blockchain Centre of Excellence (BCoE) is a specialist unit within the Enterprise AI and Engineering division. The team’s mission is to explore and validate … blockchain and distributed ledger technology (DLT) solutions relevant to Fidelity’s business and the broader financial industry. As a tight-knit team of technologists and domain experts, we blend technical depth with business insight to unlock value through emerging decentralized technologies. What You’ll Do As a Blockchain More ❯

Title: Blockchain Engineer Department: Enterprise AI and Engineering – Blockchain Centre of Excellence Location: Cannon Street, London (Hybrid) Job Type: Contract About Fidelity International Fidelity International offers investment solutions and services and retirement expertise to approximately 3 million customers globally. As a privately-held, purpose-driven company with a … roles in the way that works best for them, our colleagues, our clients, and the business. We call this “dynamic working.” Department Overview The Blockchain Centre of Excellence (BCoE) is a specialist unit within the Enterprise AI and Engineering division. The team’s mission is to explore and validate … blockchain and distributed ledger technology (DLT) solutions relevant to Fidelity’s business and the broader financial industry. As a tight-knit team of technologists and domain experts, we blend technical depth with business insight to unlock value through emerging decentralized technologies. What You’ll Do As a Blockchain More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Social network you want to login/join with: Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35 We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join … tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure. Required skills: 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with … Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing. More ❯

Senior Python Developer with Blockchain Experience Senior Python Developer with Blockchain Experience 4 weeks ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. This range is provided by GenLayer Labs. Your actual pay will be based on … YeagerAI is a pioneering AI research lab dedicated to revolutionizing the way humans and artificial intelligence interact. We are operating at the intersection of blockchain technology and AI to build GenLayer, a groundbreaking blockchain that integrates AI in its consensus algorithm to create smart contracts that are intelligent … make smart decisions, and interact with the real world in ways that were previously impossible. Position Overview We are looking for a Senior Python Developer who specializes in advanced Python development. In this role, you will focus on core language features, performance optimization, and security enhancements suitable for sandboxed More ❯

Social network you want to login/join with: If you are passionate about blockchain technology and thrive in a dynamic environment, this role offers the opportunity to shape groundbreaking solutions while working remotely. Key Responsibilities Smart Contract Development : Design, develop, and deploy secure and efficient smart contracts using … Solidity . Blockchain Integration : Integrate blockchain technology into web and backend systems. Performance Optimization : Optimize applications for speed, scalability, and user experience. Collaborative Development : Work closely with cross-functional teams including product managers, designers, and other developers to deliver high-quality solutions. Innovation : Stay updated on the latest … blockchain trends and technologies, contributing to new ideas and innovative approaches. Key Qualifications Essential Skills and Experience : Proven experience with Ethereum and related blockchain technologies. Advanced knowledge of Solidity and smart contract development. Experience building RESTful APIs and web applications. Solid understanding of data structures, algorithms, and distributed More ❯

Social network you want to login/join with: If you are passionate about blockchain technology and thrive in a dynamic environment, this role offers the opportunity to shape groundbreaking solutions while working remotely. Key Responsibilities Smart Contract Development : Design, develop, and deploy secure and efficient smart contracts using … Solidity . Blockchain Integration : Integrate blockchain technology into web and backend systems. Performance Optimization : Optimize applications for speed, scalability, and user experience. Collaborative Development : Work closely with cross-functional teams including product managers, designers, and other developers to deliver high-quality solutions. Innovation : Stay updated on the latest … blockchain trends and technologies, contributing to new ideas and innovative approaches. Key Qualifications Essential Skills and Experience : Proven experience with Ethereum and related blockchain technologies. Advanced knowledge of Solidity and smart contract development. Experience building RESTful APIs and web applications. Solid understanding of data structures, algorithms, and distributed More ❯

Blockchain Core Developer - Golang, Ethereum London/Remote About Clearmatics Clearmatics is a blockchain protocol engineering company that builds decentralised financial market infrastructures that are more open, efficient, and resilient than those serving legacy market structures of today. We have a bold vision for this new market … important risk factors tradable; by anyone, anywhere, without reliance on financial intermediaries. We are building this new infrastructure in collaboration with incredible trading and blockchain communities. Clearmatics was founded in 2015, and we have ever since been committed advocates of Open Source development, and active participants in the blockchain … and cryptography research communities. We've also been an active participant and supporter of decentralized infrastructure initiatives. We're looking to hire a Core Developer to expand our Layer 1 Engineering team. Our stack is Ethereum-like, so familiarity with -- and passion for -- the space is key. Some of More ❯

work permit required: Yes col-narrow-right Job Views: 7 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: If you are passionate about blockchain technology and thrive in a dynamic environment, this role offers the opportunity to shape groundbreaking solutions while working remotely. Key Responsibilities Smart Contract Development … Design, develop, and deploy secure and efficient smart contracts using Solidity . Blockchain Integration : Integrate blockchain technology into web and backend systems. Performance Optimization : Optimize applications for speed, scalability, and user experience. Collaborative Development : Work closely with cross-functional teams including product managers, designers, and other developers to … deliver high-quality solutions. Innovation : Stay updated on the latest blockchain trends and technologies, contributing to new ideas and innovative approaches. Key Qualifications Essential Skills and Experience : Proven experience with Ethereum and related blockchain technologies. Advanced knowledge of Solidity and smart contract development. Experience building RESTful APIs and More ❯

Social network you want to login/join with: Rust Developer | Crypto/Blockchain Trading Technology, London (City of London) Client: Selby Jennings Location: London (City of London), United Kingdom Job Category: Other EU work permit required: Yes Job Views: 4 Posted: 28.04.2025 Expiry Date: 12.06.2025 Job Description … Rust Developer | Crypto/Blockchain Trading Technology Location: London, UK - 5 days a week in office required Package: Base + Bonus + Equity We are working closely with a profitable, venture-backed crypto tech company based in London, specializing in developing trading infrastructure and services within the decentralized … finance sector. Our mission is to foster an open, transparent financial system through their contributions to the Ethereum blockchain and beyond. They seek a Software Engineer with a strong STEM background and a passion for software development. While experience with low latency systems, algorithmic trading, or MEV is advantageous More ❯

to login/join with: Are you looking to join an expanding Web3 start-up within FinTech and have experience in a Full Stack Blockchain environment? This business has been going for just over 2 years but have rapidly expanded in the last 12months and have plans to increase … in massive growth across the company leading to the need for this hire. They are looking for a good level of experience working in blockchain environments while having the core development skills to build backend services, complex software systems and understand libraries such as web3 and ethers.js. The role … days a week. The Role Build modern, responsive front-end interfaces using React. Develop scalable back-end services using Node.js and TypeScript. Integrate blockchain interactions using web3.js, ethers.js or Viem. Collaborate closely with product, design, and other developers to create seamless UX. Write clean, well-tested, and secure code. More ❯

revolution. Our solutions empower businesses-from exchanges and wallets to payment processors and ATMs-to seamlessly integrate reserve-backed tokens across blockchains. By harnessing blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, at a fraction of the cost. Transparency is the … protect user assets and data. Requirements +5 years of experience with Node.js and JavaScript development. Experience building or integrating crypto wallets for DeFi/blockchain applications. Familiarity with modular architecture for scalable applications. Experience developing complex platforms and APIs. Understanding of Peer-to-Peer technologies. Ability to learn new More ❯

Rust Developer | Crypto/Blockchain Trading Technology Location: London, UK - 5 days a week in office required Package: Base + Bonus + Equity We are working closely with a profitable, venture backed crypto tech company based in London, who specialise in the development of trading infrastructure and services … within the decentralised finance sector. Our mission is to foster an open, transparent financial system through their contributions to the Ethereum blockchain and beyond. They seek a Software Engineer with a strong background in STEM and a passion for software development. While experience with low latency systems, algorithmic trading … coding, and scalable distributed systems) Familiarity with concurrency, OOP, database systems, and basic SQL Knowledge of Linux/Unix, AWS, Git, Docker, EVM, and blockchain fundamentals Apply now More ❯

Rust Developer | Crypto/Blockchain Trading Technology Location: London, UK - 5 days a week in office required Package: Base + Bonus + Equity We are working closely with a profitable, venture backed crypto tech company based in London, who specialise in the development of trading infrastructure and services … within the decentralised finance sector. Our mission is to foster an open, transparent financial system through their contributions to the Ethereum blockchain and beyond. They seek a Software Engineer with a strong background in STEM and a passion for software development. While experience with low latency systems, algorithmic trading … coding, and scalable distributed systems) Familiarity with concurrency, OOP, database systems, and basic SQL Knowledge of Linux/Unix, AWS, Git, Docker, EVM, and blockchain fundamentals Apply now More ❯

YeagerAI is a pioneering AI research lab dedicated to revolutionizing the way humans and artificial intelligence interact. We are operating at the intersection of blockchain technology and AI to build GenLayer, a groundbreaking blockchain that integrates AI in its consensus algorithm to create smart contracts that are intelligent … decisions, and interact with the real world in ways that were previously impossible. Position Overview We are looking for a Senior Full Stack JavaScript Developer to lead the development of both client-side and server-side functionalities. In this role, you will focus on building user interfaces that interact … with the blockchain-enabled Python backend, ensuring seamless integration and an exceptional user experience. Your expertise will be crucial in delivering high-quality, performant, and intuitive web applications. Key Responsibilities Lead the development of both client-side and server-side functionalities using JavaScript. Design and implement user interfaces and More ❯

YeagerAI is a pioneering AI research lab dedicated to revolutionizing the way humans and artificial intelligence interact. We are operating at the intersection of blockchain technology and AI to build GenLayer, a groundbreaking blockchain that integrates AI in its consensus algorithm to create smart contracts that are intelligent … make smart decisions, and interact with the real world in ways that were previously impossible. Position Overview We are looking for a Senior Python Developer who specializes in advanced Python development. In this role, you will focus on core language features, performance optimization, and security enhancements suitable for sandboxed … execution environments. Your expertise will be crucial in ensuring the robustness, security, and efficiency of our custom Python interpreter and its integration with blockchain functionalities. Key Responsibilities Specialize in advanced Python development focusing on core language features. Optimize Python code for performance and scalability. Implement security enhancements suitable for More ❯

We are looking for a smart, enthusiastic and practical software engineer with a keen interest in current blockchain technology. Using your experience of different blockchain technologies and software engineering best practices you will be involved in the design and implementation of secure and scalable applications that are transforming … which bring value to the core platform and applications running on top of it. Sprytech is a small, focused, flat team of software, security, blockchain and devops engineers and we are looking for people to not only help us deliver our requirements but also to add to our existing … broad and diverse knowledge base. Responsibilities Design and implementation of blockchain aspects of our core solution for a supply chain traceability in line with software engineering best practices Working with the wider engineering team in implementing our core platform and helping them work with and understand blockchain technologies More ❯

business leads to define product roadmaps, set vision and strategy, and serve as a sounding board for venture leadership. Collaborate closely with the Somnia Blockchain team and provide product feedback to their developers. Why You’re Made For This We seek an experienced Web3 Engineer with expertise in EVM … interactions, and experience with The Graph. You have shipped multiple production-grade Dapps using Solidity. You possess strong hands-on skills with the Foundry blockchain development framework. You have built web apps with TypeScript (preferably React or Next.js) and used wagmi hooks for smart contract integration. You have a … deep understanding of blockchain architecture, token standards (ERC-20, ERC-721, ERC-1155), and non-standard token versions. You are knowledgeable about Solidity best practices and security vulnerabilities. You enjoy solving complex, ambiguous problems and working across disciplines. You are passionate about the web3 community. Optional Skills Additional helpful More ❯

product roadmap, help set the vision and strategy for the venture, act as a sounding board for venture leadership Work closely with the Somnia Blockchain team and provide product feedback to their developers Why You’re Made For This We are seeking an experienced Web3 Engineer with experience on …/TS libraries for contract interactions with frontend and backend systems, and experience with The Graph. You have strong hands-on skills with the blockchain development framework Foundry. You’ve shipped web apps built with TypeScript (preferably React, Next.js) and used wagmi hooks for smart contract integrations. You have … a deep understanding of blockchain architecture, token standards (ERC-20, ERC-721, ERC-1155), and non-standard versions (e.g., USDC). Knowledge of Solidity best practices and common security vulnerabilities. You thrive when solving complex, ambiguous problems and enjoy working across disciplines to find the best solutions. You are More ❯