1 to 25 of 145 Smart Contracts Jobs in London

deployment. Your Impact Your primary focus will be on the design, development, testing, and deployment of robust, secure, and gas-efficient smart contracts that facilitate cross-chain interactions. This includes: Designing and Implementing CCIP-Integrated Smart Contracts: You will independently own the development and … deployment of custom smart contracts that interact with CCIP, including token pool contracts and other on-chain logic required for specific partner use cases. This involves a deep understanding of token handling (minting, burning, locking, unlocking, wrapping) and ensuring secure asset management. Developing Reusable On-Chain … to translate partner requirements into robust on-chain solutions. You'll also provide technical guidance to partners on integrating with the smart contracts you build. Technical Documentation: Produce clear and comprehensive technical documentation, including deployment guides and integration instructions, for the smart contracts and More ❯

Serverless whenever possible. Our backend engineering team develops architectures that are scalable from day 1, with no single points of failure. Smart Contracts: Primarily the ERC20 stack but across technologies such as Ethereum, Polygon, chainlink etc. Operations: Our AWS services are fully managed via infrastructure as code. … errors. As a small team, code quality is a top priority, so we maintain high standards for cleanliness and structure. Code smart contracts: We have a couple behind us already but you'll be driving the coding of smart contracts and everything that comes … candidate can see the bigger picture and architect both front end and back-end systems to accomplish product goals. Experience with smart contracts, ERC-20, web3 and ethers.js . While you'll primarily work with Node.JS/TypeScript, experience in DevOps is a plus. This role is More ❯

stack to solve a problem – From building core Java components one day to creating new financial products through the use of smart contracts the next. We do it all, and we do it properly. Regular opportunities to learn and develop yourself with internal tech talks, encouragement to … you’ll be working with: Backend: Distributed, event-driven core Java 21 (80% of the code-base), MySQL, Kafka, Solidity (EVM Smart Contracts), Rust (Solana Smart Contracts) Testing: JUnit, Hardhat, Jenkins, Selenium, many in-house tools... The LMAX way is to use the right More ❯

Web3 infrastructure and smart contract solutions in close collaboration with UX and product teams. Key Responsibilities: Develop and deploy smart contracts for DeFi, NFTs, or tokenized platforms (Solidity, EVM-compatible) Integrate Web3 libraries (e.g. Web3.js, Ethers.js) with frontend dApps and wallet providers Collaborate with UX … designers to ensure seamless and intuitive interactions between smart contracts and user interfaces Optimize smart contracts for security, performance, and low gas usage Maintain clear documentation and participate in audits and peer reviews Key Requirements: 3+ years of hands-on experience in blockchain development … Proven track record with Solidity, Ethereum-based contracts, and dApp development Familiarity with wallet integration patterns (MetaMask, WalletConnect, etc.) Understanding of decentralised user flows and Web3 security best practices Experience working in cross-functional teams, especially alongside UX designers and frontend developers Bonus: Knowledge of Layer 2 solutions, The More ❯

Web3 infrastructure and smart contract solutions in close collaboration with UX and product teams. Key Responsibilities: Develop and deploy smart contracts for DeFi, NFTs, or tokenized platforms (Solidity, EVM-compatible) Integrate Web3 libraries (e.g. Web3.js, Ethers.js) with frontend dApps and wallet providers Collaborate with UX … designers to ensure seamless and intuitive interactions between smart contracts and user interfaces Optimize smart contracts for security, performance, and low gas usage Maintain clear documentation and participate in audits and peer reviews Key Requirements: 3+ years of hands-on experience in blockchain development … Proven track record with Solidity, Ethereum-based contracts, and dApp development Familiarity with wallet integration patterns (MetaMask, WalletConnect, etc.) Understanding of decentralised user flows and Web3 security best practices Experience working in cross-functional teams, especially alongside UX designers and frontend developers Bonus: Knowledge of Layer 2 solutions, The More ❯

on complex technical challenges across the entire stack-from crafting performant user interfaces to architecting backend services, as well as writing smart contracts that power next-generation financial products. You'll work closely with product managers, designers, and fellow engineers to build intuitive, secure, and performant Web3 … experiences. WHAT YOU WILL DO Design, develop, and maintain full-stack Web3 applications-ranging from user interfaces and APIs to smart contracts and blockchain integrations. Implement smart contracts using languages such as Solidity (EVM) or Rust (SVM), and ensure they are secure, tested, and … and modern JavaScript/TypeScript tooling. Deep knowledge of backend development, including RESTful APIs, databases, and secure infrastructure practices. Hands-on experience with smart contract development in Solidity (EVM) or Rust (SVM). Familiarity with Ethereum, Solana, or similar blockchain ecosystems, and tools like Hardhat, Foundry, Anchor, etc. More ❯

on complex technical challenges across the entire stack—from crafting performant user interfaces to architecting backend services, as well as writing smart contracts that power next-generation financial products. You’ll work closely with product managers, designers, and fellow engineers to build intuitive, secure, and performant Web3 … experiences. WHAT YOU WILL DO Design, develop, and maintain full-stack Web3 applications—ranging from user interfaces and APIs to smart contracts and blockchain integrations. Implement smart contracts using languages such as Solidity (EVM) or Rust (SVM), and ensure they are secure, tested, and … shipping Web3 applications to real users. Deep knowledge of backend development, including RESTful APIs, databases, and secure infrastructure practices. Hands-on experience with smart contract development in Solidity (EVM) or Rust (SVM). Familiarity with Ethereum, Solana, or similar blockchain ecosystems, and tools like Hardhat, Foundry, Anchor, etc. More ❯

chain bridges), and key DeFi protocols and aggregators (e.g. Jupiter, Uniswap, Jito, Flashbots, etc.) Experience integrating natively with DeFi protocols and smart contracts (e.g. Uniswap Router, pump.fun liquidity pools, multicall, etc.) Experience working with Anchor Framework IDLs and EVM ABIs. Experience with debugging, and benchmarking applications with … HFT) systems. Strong understanding of order-book mechanics, market-data feed architectures, and risk-control frameworks. Experience developing and deploying Solana Smart Contracts with Achor. Experience developing EVM Smart Contracts using Solidity and popular toolchains (Foundry or Hardhat). Familiarity with cloud platforms (AWS 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 … a contract basis, supporting the build of a new digital platform. The successful candidate will be 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 … 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. *please note that candidates must be More ❯

out original R&D and turns the results into production systems. This team has designed and implemented four languages for Cardano smart contracts (Plinth, Plutus IR, Typed Plutus Core, and Untyped Plutus Core) and improved the compiler and runtime with more built-in functions and optimizations, expanding … the expressiveness, capability and security of smart contracts on Cardano. The team has formalized the semantics of Typed and Untyped Plutus Core using Agda, developed novel compilation techniques for data types, and Implemented a compiler for compiling Plinth into Untyped Plutus Core, which uses Plutus IR and … also implemented evaluators for Typed and Untyped Plutus Core, in Haskell and Agda. They also contributed to Cardano ledger updates for smart contracts, and published peer-reviewed research. . Coding And Development Write and maintain code in Haskell. Use Git for version control, committing often, and submitting More ❯

Director of Product Design at Bitcoin Smart Contracts Blockchain This EVM Blockchain platform is at the forefront of transforming the financial industry with its cutting-edge technology and is seeking a passionate Director of Product Design to shape the design strategy and team for this world-changing … business. The Company Leading player in the world of Ethereum Virtual Machine (EVM) Smart Contracts Extensive company funding allows for truly ground-breaking experimentation A diverse, international team working from anywhere in the world Extensive benefits, bonuses and share options The Role Completely own the design practice More ❯

What You’ll Be Doing Architect, build, launch, and maintain Dapps—from concept to community usage. Develop on-chain logic in smart contracts and connect them to web front-ends for crypto users and newcomers. Work with business leads to define product roadmaps, set vision and strategy … feedback to their developers. Why You’re Made For This We seek an experienced Web3 Engineer with expertise in EVM-based smart contracts using Solidity, Web3 JS/TS libraries for contract interactions, and experience with The Graph. You have shipped multiple production-grade Dapps using Solidity. … You are passionate about the web3 community. Optional Skills Additional helpful experience includes: Creating Subgraphs with The Graph protocol or designing smart contracts for optimal indexability. Experience in DeFi protocols like UniswapV2/V3 or AAVE. Familiarity with Solidity fuzz testing, Slither, or Mithril. Using the Hardhat More ❯

Be Doing Architect, build, launch, and maintain Dapps - from concept to being used by the community Build on-chain logic in smart contracts, and connect them to web front-ends to be used by crypto natives and novices Work with business leads to define the product roadmap … to their developers Why You’re Made For This We are seeking an experienced Web3 Engineer with experience on EVM-based smart contracts in Solidity, Web3 JS/TS libraries for contract interactions with frontend and backend systems, and experience with The Graph. You have strong hands … the best solutions. You are passionate about the web3 community. Optional Skills Experience with The Graph protocol for creating Subgraphs, designing smart contracts for optimal indexability, DeFi protocols like Uniswap and AAVE, Solidity fuzz testing, Slither, Mithril, and Hardhat testing framework are helpful but not essential. We More ❯

What You'll Be Doing Architect, build, launch, and maintain dApps - from concept to community usage Develop on-chain logic in smart contracts, connecting them to web front-ends for crypto natives and novices Work with business leads to define product roadmaps, and help set the vision … Somnia Blockchain development team Why You're Made For This We seek an experienced Web3 Engineer with expertise in EVM-based smart contracts using Solidity, Web3 JS/TS libraries for contract interactions, and experience with The Graph. Shipped multiple production-grade dApps built with Solidity Strong … disciplines Passionate about the web3 community Optional Skills Additional helpful experience includes: Using The Graph protocol to create Subgraphs or designing smart contracts for optimal indexability Experience in DeFi protocols like UniswapV2/V3 or AAVE Familiarity with Solidity fuzz testing, Slither, Mithril Experience with Hardhat testing More ❯

Be Doing Architect, build, launch, and maintain dApps - from concept to being used by the community. Build on-chain logic in smart contracts, and connect them to web front-ends used by crypto natives and novices. Work with business leads to define the product roadmap, help set … to their developers. Why You're Made For This We are seeking an experienced Web3 Engineer with expertise in EVM-based smart contracts on Solidity, Web3 JS/TS libraries for contract interactions, and experience with The Graph. You should have strong hands-on skills with the … Optional skills The following technical experience is helpful but not essential: Experience using The Graph protocol to create Subgraphs or designing smart contracts for optimal indexability. Experience in the DeFi ecosystem, particularly swapping protocols (e.g., Uniswap V2 or V3) and lending protocols (e.g., AAVE). Awareness of More ❯

Sui blockchain. This team plays a critical role in enabling adoption by supporting integration with the Sui framework, designing and implementing smart contracts in the Move language, and building full-stack applications that serve as developer tools, internal products, or external-facing demos and PoCs. If you … expanding the adoption of Sui & Move technologies among developers and partner companies all over the world. You’ll design and develop Smart Contracts, create innovative Solutions and empower other software engineers by building tools, creating technical resources, and showcasing the innovative capabilities of the Sui ecosystem. This … stack applications using Next.js, React, TypeScript, and Node.js with SQL and Key-Value storage technologies for data management. Design and implement smart contracts using the Move programming language to support real-world use cases and learning scenarios Create high-quality technical demos, internal tools, and reference applications More ❯

the Role As a Senior Solidity/Smart Contract Engineer on the CCIP team, you will develop highly impactful smart contracts that further secure Chainlink CCIP networks, drive on-chain projects end to end and implement new on-chain features. You will work closely with … all functions at Chainlink, from engineering, operations, finance, marketing, and more to ensure the team releases easy to use and easy to manage smart contract driven products. Your core team will be composed of smart contract and software engineers and you will report to the engineering … experience working in a collaborative product-driven environment At least 3+ years of smart contract development experience Deployed multiple smart contracts to Ethereum mainnet or an EVM compatible chain that secured substantial user funds Deep understanding of Solidity and the EVM Active participant in the More ❯

economic incentives address the core problem of the centralized insurance industry: the principal-agent problem. What we are looking for We seek a Smart Contract Engineer to help us build the premier on-chain risk marketplace for DeFi, CeFi, and beyond. Learn more about us here: Twitter , Discord … The Graph, Ethers.js, Web3-onboard.js Infrastructure: AWS, CircleCI, Coveralls, Kibana, Grafana, Prometheus Areas you'll contribute to Writing and compiling Solidity Smart Contracts, including handling quirks and edge cases Deploying contracts on Ethereum testnets and scripting deployments Integrating with and fetching data from Oracles and The … are we doing this? Community pooling for mutual risk has historical roots but lacks scalability due to trust limitations. Blockchain and smart contracts enable us to build a system where trust is placed in the system itself, not individuals. Our goal is to create a transparent, accessible More ❯

Performance and security testing experience would be a plus Solid understanding of blockchain technology, including distributed ledger concepts, consensus algorithms, and smart contracts (a plus) Experience with TypeScript and JavaScript is advantageous Demonstrated understanding of blockchain technology, including consensus algorithms and smart contracts (desirable More ❯

asset managers, and exchanges detect and mitigate all types of on-chain risks and threats. Our solutions proactively monitor and analyze smart contracts, transactions, wallets, and blockchain interactions to prevent financial crime and exploits before they happen. We work with some of the largest players in crypto … capabilities, align solutions with their risk profile, and build proof-of-concepts Design and deploy customized real-time monitoring solutions for smart contracts, transactions, and blockchain entities Lead technical onboarding and solution deployment, including custom monitor rules, API integrations, and alerting workflows Assist with integrations into customer … of experience in a technical role such as Solutions Engineer, Security Engineer, Sales Engineer, or Blockchain Analyst Strong knowledge of Web3 security, including smart contract vulnerabilities, DeFi risks, and blockchain transaction monitoring Hands-on programming experience and APIs for data integrations and monitoring configurations Ability to read Solidity More ❯

Translate business needs into detailed technical specifications and user stories. DeFi Protocol Research & Evaluation: Conduct in-depth research on DeFi protocols, smart contracts, and blockchain ecosystems. Evaluate the technical feasibility, security, and scalability of integrating new protocols or features. Stay updated on the latest advancements in blockchain … a Technical Business Analyst, Data Analyst, or similar role, preferably in the blockchain or fintech industry. - Strong understanding of DeFi protocols, smart contracts, and blockchain technology (e.g., Ethereum, Solana, Layer 2 solutions). - Proficiency in data analysis tools (e.g., SQL, Python, Excel) and blockchain analytics platforms (e.g. More ❯

in backend teams primarily using Rust and Node/Node.js, TS & JS in a full stack environment Fluency in Solana Rust smart contracts with proven experience and projects 4+ years of experience in blockchain development. Practical experience deploying smart contracts on the mainnets of More ❯

1. Proven experience in blockchain development 2.Strong understanding of Web 3 protocols, decentralized systems, and cryptographic principles. 3.Experience developing and deploying smart contracts and working with tools like Hardhat, Truffle, or Foundry. 4.Ability to critically assess and challenge third-party technical solutions and architectures. 5.Familiarity with banking … and CICD pipelines. 8.Excellent communication skills and the ability to work in a collaborative, fast-paced environment 9.Experience developing and deploying smart contracts and working with tools like Hardhat and Truffle. 5.Familiarity with banking systems, financial regulations, and enterprise-grade security standards More ❯

in backend teams primarily using Rust and Node/Node.js, TS & JS in a full stack environment Fluency in Solana Rust smart contracts with proven experience and projects 4+ years of experience in blockchain development. Practical experience deploying smart contracts on the mainnets of More ❯

Unreal, 8th Wall, Google Maps AR, WebXR Computer Vision : object detection, real-time recognition, AR overlays Web3 : NFTs, wallets, token rewards, smart contracts (Solidity/Rust), marketplaces Frontend/Backend : React Native, Node.js, Adalo (for rapid prototyping), Firebase/Firestore Security : End-to-end encryption, zero-trust … architecture, smart contract audits Ideal Candidate 10–15+ years in full-stack or system architecture roles, ideally at … startups or in emerging tech. Built or scaled a product with real-time, AI, or AR functionality. Solid understanding of tokenomics, smart contracts, and NFT infrastructure. Passionate about future-forward tech , spatial commerce, and user-first design. Visionary yet pragmatic — able to architect long-term while shipping More ❯