City of London, London, United Kingdom Hybrid / WFH Options
Technical Futures
Do you have experience in Security Software, Web3/SmartContracts Auditing and also have programming knowledge of Solidity, Go, Rust, and/or C++ and want to be part of an expert team securing some the worlds leading blockchain protocols? Fully Remote working. Can be based … in Europe or UK. A Web3/SmartContracts Auditor/Security SoftwareEngineer, ideally with a PhD in Mathematics, Computing or Cryptography coupled with strong programming skills (Go, Rust, Solidity, C/C++) will join an innovative start-up combining high-end security, blockchain and program analysis … generous bonus, research opportunities and personal equipment of your choice. You should bring the following: A relevant PhD. Experience of Web3 Auditing/SmartContract Auditing. Highly beneficial to bring experience of zero-knowledge proofs. Proficiency in programming languages to include Go and Rust, Solidity and C/ More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Fidelity International
perform risk assessments. Architecture & Standards: Develop and maintain architectural standards, security models, and integration blueprints for blockchain systems. Development & Integration: Deliver hands-on smartcontract development and integration with enterprise systems; collaborate closely with vendors and act as an individual contributor where needed. Thought Leadership: Represent Fidelity in … or software engineering, including 3+ years with blockchain/DLT. Proficient in Ethereum, Hyperledger, or comparable platforms. Hands-on experience developing smartcontracts (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 More ❯
business' growth by enhancing existing infrastructure and connecting to new trading venues in both CeFi and DeFi. You will also work on optimising smartcontract interactions, on-chain arbitrage, and MEV strategies in DeFi. If you excel in Rust, thrive on solving intellectually stimulating problems, and have a More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Radley James
trading systems for both CeFi and DeFi markets. You'll help drive business growth by enhancing infrastructure, connecting to new venues, and optimizing smartcontract interactions and MEV strategies. What You'll Need: Strong Rust skills (professional or personal projects) Experience with async programming Solid CS fundamentals (algorithms More ❯
accountable, and operationally disciplined Nice to Have Experience collaborating with engineering teams on trading infrastructure Experience with Solidity or interacting with smartcontracts directly Familiarity with perpetual decentralized exchange protocols Background in market microstructure or HFT Track open interest, perp skew, rate differentials, and L2 flows to More ❯
and help shape the architectural vision of this dynamic bank's blockchain-related infrastructure. Design and implement secure wallet systems Build smartcontracts and DeFi tooling from the ground up Develop interoperable cross-chain and L2 solutions Engineer tokenisation systems for banking infrastructure Collaborate with key teams … for enterprise crypto services Key Responsibilities: Develop reliable, high-performance blockchain systems Design wallet, smartcontract, and cross-chain solutions Guide node architecture and ledger design Advise on blockchain trends and DeFi ecosystems The Candidate We're seeking a proven Engineering leader with strong DeFi, Stablecoin, and (ideally … have a background of 0-1 build out and deep blockchain experience. 10+ years in software & blockchain architecture Deep knowledge of EVM, Rust Smart-Contract build. A background in building Crosschain, Sablecoin, wallets, and DeFi products Experience with production-grade blockchain design Expertise in blockchain security and performance More ❯
iterate closely with real users Prototype new protocols and application patterns Contribute across the stack, from distributed systems to databse, and smartcontracts to frontend We're looking for a Software Engineer who: Learns fast, moves fast, and is deeply self-driven Has touched cryptographic systems, distributed More ❯