As a Software Engineer II, you will join our London-based engineering team, contributing to the design, development, and delivery of Java, Python and TypeScript-based blockchain applications. 

Working alongside experienced engineers with decades of Markets expertise, you'll build production-grade blockchain services, learn cutting-edge DLT technologies, and help transform the financial ecosystem from the inside. This role offers the opportunity to grow your skills in blockchain and distributed systems while working on high-impact projects with direct visibility to business leaders across the industry's leading markets business. Markets Digital Assets focuses on designing and building production-grade solutions leveraging Blockchain and Distributed Ledger Technologies (DLT) to transform JPMorgan's CIB Markets business. We partner closely with Front Office, Product, Operations, and core platform teams to deliver secure, scalable, and compliant digital asset capabilities across our private blockchain network, Kinexys Digital Assets, and public blockchains.

Job Responsibilities

Develop scalable, secure services using Java Spring Boot, TypeScript/NestJS, ReactJS, and PythonContribute to end-to-end delivery: implementation, testing, CI/CD, deployment, and production supportWrite clean, maintainable code and participate in code reviews to uphold engineering standards for quality, observability, and performanceCollaborate with Front Office, Product, Operations, and platform teams to build and deliver transformative DLT use casesLearn and apply blockchain technologies in a full-stack DApps build environment across private and public blockchainsWork with enterprise development toolchains including Git, Jenkins, and CI/CD pipelinesEngage with senior engineers and architects to understand distributed systems design and best practicesParticipate in team knowledge-sharing, hackathons, and experimentation with emerging technologiesContribute to the team's technical output and help advocate for DLT within the firm

Required qualifications, capabilities and skills

Hands-on software engineering experience with Java Spring Boot/Python or similar modern backend frameworksUnderstanding of software development fundamentals: data structures, algorithms, object-oriented designExperience with version control (Git) and working in collaborative development environmentsEagerness to learn distributed systems, blockchain technologies, and cloud-native architecturesStrong problem-solving skills and ability to work effectively in a teamExcellent communication and collaboration skills; comfort working with diverse stakeholder groupsFamiliarity with CI/CD pipelines, automated testing, and DevOps practicesInterest in or exposure to blockchain and Distributed Ledger Technologies (DLT)

Preferred qualifications, capabilities and skills

Familiarity with TypeScript, JavaScript, or front-end development (ReactJS or similar frameworks)Experience building on public or permissioned blockchain platforms (e.g., Solana, Ethereum/EVM, Hyperledger, Polkadot, Cosmos, Avalanche, Canton)Understanding of cryptographic protocols, smart contracts, or key managementExperience with AWS services and cloud-native architecturesInterest in front office or trade-processing environments within financial services