1 to 25 of 69 Permanent Smart Contracts Jobs in London

processes, workflows, and system integrations. 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 technology, Web3, and decentralized finance. … 3+ years of experience as 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., Dune Analytics, Glassnode). - Experience More ❯

Blockchain Developer with strong skills in Ethereum-based ecosystems. You will be joining a world-class engineering team, contributing across the full stack, from writing performant smart contracts to architecting scalable back-ends and beautiful user-facing interfaces. They will provide exposure and training in: Solidity, Node.js, React, HTML5, CSS3, TypeScript, Foundry, Hardhat, Ethereum-based ecosystems, bridging More ❯

Blockchain Developer with strong skills in Ethereum-based ecosystems. You will be joining a world-class engineering team, contributing across the full stack, from writing performant smart contracts to architecting scalable back-ends and beautiful user-facing interfaces. They will provide exposure and training in: Solidity, Node.js, React, HTML5, CSS3, TypeScript, Foundry, Hardhat, Ethereum-based ecosystems, bridging More ❯

technology and its application in different use cases. Ability to work independently in a fast-paced and evolving environment. Genuine interest in Web3 , blockchain, cryptocurrency, and smart contracts Check our Tech Blog and Open-Source Contribution Nice-to-have: Additional language skills (in particular,any country from EMEA). Understand tech concepts or have strong tech curiosity More ❯

Inside IR35 Required Core Skills: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. More ❯

Inside IR35 Required Core Skills: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. More ❯

Inside IR35 Required Core Skills: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. More ❯

Inside IR35 Required Core Skills: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. More ❯

Inside IR35 Required Core Skills: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. More ❯

and Docker. We use AWS 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. We take cloud security, logging … maintainable, and less prone to 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 with them. Living in Web3 … contract safe zone. Our ideal 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 fully remote (with offices optional More ❯

onsite) Duration: Contract Job Description: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. Thanks & Regards, Sreeja IT Recruiter | Europe & UK Email - sreeja.j@ampstek.com Ampstek Services Limited More ❯

onsite) Duration: Contract Job Description: 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 systems, financial regulations, and enterprise … 7.Experience with version control (Git) 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. Thanks & Regards, Sreeja IT Recruiter | Europe & UK Email - sreeja.j@ampstek.com Ampstek Services Limited More ❯

Detailed Job Description: 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 systems, financial regulations, and enterprise-grade security … 7.Experience with version control (Git) 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 ❯

Detailed Job Description: 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 systems, financial regulations, and enterprise-grade security … 7.Experience with version control (Git) 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 ❯

Detailed Job Description: 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 systems, financial regulations, and enterprise-grade security … 7.Experience with version control (Git) 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 ❯

Detailed Job Description: 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 systems, financial regulations, and enterprise-grade security … 7.Experience with version control (Git) 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 ❯

Detailed Job Description: 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 systems, financial regulations, and enterprise-grade security … 7.Experience with version control (Git) 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 5.Familiarity with banking systems, financial regulations, and enterprisegrade security standards More ❯

and recover quickly. Make sure we respect any software security norms (Kiln is a SOC 2 Type 1 and Type 2 company). Continuously support our Software/Smart Contract team to ship code of quality. Actively suggest continuous improvement of Kiln's architecture. Assess any protocol deployment risks. Communicate with our Product & Sales team to make sure … that may occur during protocol deployment. Stack: Infrastructure: AWS/GCP + baremetal, Kubernetes, Terraform/Terragrunt, Prometheus/Thanos, Helm, Hashicorp Vault, FluxCD Software: Golang, Typescript, PostgreSQL Smart-Contract: Solidity, Foundry, OpenZeppelin Requirements: +5 years of background experience in Software or Infrastructure , within a high standard. engineering environment - preferably FinTech or Crypto. Proven experience as a Senior More ❯

cyber forensics, finance, economics, mathematics, engineering, or a related field. Experience with blockchain analytics tools (Chainalysis, TRM Labs, Elliptic, etc.); certification preferred. Strong understanding of blockchain, smart contracts, DeFi, and crypto ecosystems. Knowledge of financial regulations (FinCEN, FFIEC, AML guidelines). Strong analytical, investigative, and organizational skills. Advanced proficiency in Excel and Office Suite. Experience with data More ❯

partner solutions for DLT implementation; perform risk assessments. Architecture & Standards: Develop and maintain architectural standards, security models, and integration blueprints for blockchain systems. Development & Integration: Deliver hands-on smart contract development and integration with enterprise systems; collaborate closely with vendors and act as an individual contributor where needed. Thought Leadership: Represent Fidelity in industry forums, publish white papers … 7+ years in enterprise IT or software engineering, including 3+ years with blockchain/DLT. Proficient in Ethereum, Hyperledger, or comparable platforms. Hands-on experience developing smart contracts (e.g., Solidity) and integrating blockchain with enterprise systems. Familiarity with financial services, particularly in asset management and fund distribution. Proven ability to design or evaluate tokenization use cases. Strong More ❯

partner solutions for DLT implementation; perform risk assessments. Architecture & Standards: Develop and maintain architectural standards, security models, and integration blueprints for blockchain systems. Development & Integration: Deliver hands-on smart contract development and integration with enterprise systems; collaborate closely with vendors and act as an individual contributor where needed. Thought Leadership: Represent Fidelity in industry forums, publish white papers … 7+ years in enterprise IT or software engineering, including 3+ years with blockchain/DLT. Proficient in Ethereum, Hyperledger, or comparable platforms. Hands-on experience developing smart contracts (e.g., Solidity) and integrating blockchain with enterprise systems. Familiarity with financial services, particularly in asset management and fund distribution. Proven ability to design or evaluate tokenization use cases. Strong More ❯

maintain end-to-end features across the Mintus platform — from intuitive front-end interfaces to robust, secure backend services. -Build scalable APIs and services to support tokenisation workflows, smart contract interactions, and AI-driven decision tools. -Collaborate cross-functionally with design, product, and AI teams to translate business needs into powerful user experiences. -Optimise performance across the stack … and event-driven architecture. -Solid experience with cloud services (AWS, GCP or equivalent), CI/CD, and containerisation tools like Docker. -Familiarity with blockchain fundamentals and smart contracts is a strong plus. -Strong problem-solving skills and a proactive, ownership-driven mindset. -Comfortable working in a fast-paced, agile environment with evolving requirements. Bonus Points For -Experience More ❯

maintain end-to-end features across the Mintus platform — from intuitive front-end interfaces to robust, secure backend services. -Build scalable APIs and services to support tokenisation workflows, smart contract interactions, and AI-driven decision tools. -Collaborate cross-functionally with design, product, and AI teams to translate business needs into powerful user experiences. -Optimise performance across the stack … and event-driven architecture. -Solid experience with cloud services (AWS, GCP or equivalent), CI/CD, and containerisation tools like Docker. -Familiarity with blockchain fundamentals and smart contracts is a strong plus. -Strong problem-solving skills and a proactive, ownership-driven mindset. -Comfortable working in a fast-paced, agile environment with evolving requirements. Bonus Points For -Experience More ❯

maintain end-to-end features across the Mintus platform — from intuitive front-end interfaces to robust, secure backend services. -Build scalable APIs and services to support tokenisation workflows, smart contract interactions, and AI-driven decision tools. -Collaborate cross-functionally with design, product, and AI teams to translate business needs into powerful user experiences. -Optimise performance across the stack … and event-driven architecture. -Solid experience with cloud services (AWS, GCP or equivalent), CI/CD, and containerisation tools like Docker. -Familiarity with blockchain fundamentals and smart contracts is a strong plus. -Strong problem-solving skills and a proactive, ownership-driven mindset. -Comfortable working in a fast-paced, agile environment with evolving requirements. Bonus Points For -Experience More ❯

adoption. Although the role is remote-friendly, it is preferred that you are located and working within the GMT-PST time zones for coordination purposes. Responsibilities Work with smart contract engineers to design and implement a functional user-friendly experience for Web3 technologies. Collaborate with Product, Design, and Engineering teams to define, prioritize and develop solutions/features … for Web3 products. Collaborate with frontend, backend, and smart contract developers. Own and plan projects and products end to end for long-term impact - including UI, backend, testing, etc. Help identify friction points and implement solutions to improve potential bottlenecks in the development process. Requirements 5+ years of relevant experience building clean, maintainable, and well-tested code in More ❯