Latest Blockchain Protocol Engineer Jobs

Senior Software Engineer, Blockchain Protocols

This role involves building scalable systems to ingest and process blockchain data from over 30 protocols, transforming on-chain activity into actionable intelligence. The engineer will leverage AI-native workflows, including LLMs and automated agents, to accelerate development and improve code quality while ensuring pipeline reliability. They will also provide technical mentorship and guide the evolution of data processing infrastructure used across investigation, compliance, and security products.

Chainalysis United Kingdom

Remote Permanent

Senior Rust Blockchain Engineer

Design and build a fully on-chain central limit order book (CLOB), matching engine, and blockchain client logic for a new Layer 1 focused on tokenised real-world assets. Work at the protocol level on consensus, state transitions, and transaction pipelines, optimising for high concurrency and low latency. Operate in a systems programming context with deep ownership over core architecture.

Plexus Ec1A1Bb, EC1A 1BB, United Kingdom US$175,000 – US$250,000 pa

Remote Permanent

Senior Security Engineer

This role involves securing and auditing cloud environments and infrastructure for a cutting-edge Web3 and blockchain platform. The engineer will integrate security into DevSecOps pipelines, manage IAM controls, and proactively address security risks. The position offers a unique opportunity to shape security practices in a pioneering Bitcoin staking and shared security protocol environment.

Plexus Ec3A1At, EC3A 1AT, United Kingdom US$300,000 pa

Back-End Engineer, Trading

Design and develop backend services in Kotlin and Python for a high-volume cryptocurrency trading platform, focusing on real-time order management, market data processing, and low-latency APIs. Collaborate with product, frontend, and trading teams to ensure system reliability, scalability, and performance in a fast-paced environment.

Blockchain.com London, United Kingdom

On-site Permanent

Senior QA Engineer (Financial Apps)

This role involves end-to-end quality ownership for financial applications in the digital asset space, with a focus on transitioning from manual to automation-first testing. The engineer will use AI tools to accelerate test coverage, debug through logs and monitoring systems, and collaborate closely with product teams to improve system reliability. Work spans both frontend and backend, particularly around blockchain transactions, staking, and Web3 integrations.

Fireblocks United Kingdom

Remote Permanent

DevOps Engineer

Since being founded in 2018, Copper has been building the standard for institutional digital asset infrastructure with a focus on custody, collateral management, and prime services.Led by Amar Kuchinad, Copper's Global CEO, the firm provides a comprehensive suite of custody,...

Copper London, United Kingdom

Senior Data Scientist

This role involves developing advanced behavioral heuristics, graph algorithms, and machine learning models to analyze blockchain data, particularly on EVM networks. The Senior Data Scientist will lead production projects from concept to deployment, working with large-scale on-chain datasets to uncover insights that power Chainalysis' products. Collaboration with technical and non-technical stakeholders, mentoring, and contributing to production data pipelines are key aspects of the role.

Chainalysis London, United Kingdom

On-site Permanent

Treasury Operations Analyst

Blockchain is connecting the world to the future of finance. As the most trusted and fastest-growing global crypto company, it helps millions of people worldwide safely access cryptocurrency. Since its inception in 2011, Blockchain has earned the trust of over...

Blockchain.com London, United Kingdom

Blockchain Architect/lead

This role involves leading the design and development of enterprise-grade blockchain solutions from concept to production, with active coding in smart contracts and distributed ledger technologies. The architect will integrate blockchain systems with legacy enterprise infrastructure, ensuring security, scalability, and compliance with regulations like GDPR and KYC/AML. Collaboration with data, cloud, and DevOps teams is central to delivering robust, production-ready solutions.

Randstad Technologies Recruitment London, City And County Of the City Of London, United Kingdom £350 – £500 pd

Remote Contract

Blockchain Architect

This role involves leading the end-to-end design and delivery of enterprise-grade blockchain solutions, from concept and proof-of-concept to production deployment. The Blockchain Architect will define architecture blueprints, select appropriate platforms, design smart contracts and token models, and ensure compliance with security and regulatory standards. Close collaboration with cloud, data, and DevOps teams ensures scalable, secure, and interoperable distributed ledger systems are built and maintained.

CBSbutler Holdings Limited trading as CBSbutler London, City And County Of the City Of London, United Kingdom £500 – £550 pd

Remote Contract

Solutions Consultant - San Francisco

This role involves leading product demos, managing PoCs, and supporting sales efforts for Elliptic's AML and compliance solutions. You will work closely with compliance teams at crypto exchanges, financial institutions, and fintechs to understand their needs and demonstrate how Elliptic's platform can address their challenges.

Elliptic United Kingdom

Hybrid Permanent

Senior Software Engineer - Data

This role involves designing and building large-scale, distributed data systems and pipelines that power blockchain intelligence and analytics products. The engineer will work hands-on with Scala, Spark, and AWS to process batch and streaming data, solve complex data challenges, and integrate AI-driven tooling. Collaboration with data scientists, product teams, and intelligence analysts is key to delivering transparent, impactful solutions in the crypto space.

Elliptic London, United Kingdom, United Kingdom

Hybrid Permanent

Senior Software Engineer – AI Infrastructure

Design and build high-performance Rust services for AI agent infrastructure, focusing on scalable model inference, orchestration, and execution. Develop reliable MLOps patterns with strong observability and failure handling in a production-critical, high-scale environment. Collaborate with agent systems and infrastructure teams to harden prototypes into robust systems serving millions of users.

Kraken London, United Kingdom, United Kingdom

Remote Permanent

Sales Engineer, London

This role involves providing technical pre-sales support by designing and demonstrating secure blockchain-based solutions for prospective clients across fintech, banking, and Web3 sectors. The Sales Engineer will lead product demonstrations, proof of concepts, and RFP responses, translating complex technical capabilities into customer-focused value. Close collaboration with sales and product teams ensures tailored integration of Fireblocks’ MPC wallet infrastructure and APIs.

Fireblocks London, United Kingdom

Hybrid Permanent

Solutions Engineer II, Exchanges & Liquidity

Design and implement technical solutions for exchanges and liquidity providers using Circle's blockchain and stablecoin infrastructure. Lead technical discovery, solution architecture, and proof-of-concepts while collaborating with sales, product, and engineering teams. Contribute to product strategy through client feedback and support global technical engagements.

Circle London, United Kingdom