Senior Backend Engineer - Core Platform

The Role As a Senior Backend Engineer at Murmuration, you'll build the backend platform to support the client products that credit unions and their members use every day. We work in an AI-native way: we expect you to be fluent with AI coding tools, and you'll also help build AI features into the product. Reporting to the Chief Technology Officer, you'll be one of the first engineers here, with a real say in the product and how it's built. About Murmuration Murmuration is a new technology company building the core platform that credit unions run on. We provide the software, payments, and data infrastructure that lets a credit union offer its members modern digital banking without having to build or run the technology itself. Credit unions are member-owned and rooted in their communities, but many still operate on systems that are decades old, which limits what they can offer their members. We're building the alternative. We're a new company, putting our platform and our first engineering team in place now, with the backing of an established group. For people who join early, that means a real say in the product, the architecture, and how the company works. What you'll be doing Design, build, and ship backend features (e.g. APIs, event queues + producers and consumers, databases) of our platformUse AI coding tools to work quickly, without dropping standards for code quality, testing, and securityBuild AI features into the product (assistants, automation, document processing) where they add genuine value for members and/or the businessDesign and consume REST/GraphQL APIs that connect our platform to CBS, payments, and third-party servicesTake features from design through implementation, testing, deployment, and supportHave a say in architecture and technical decisions as part of a small, senior teamWrite automated tests, review other people's code, and help set the engineering standards hereWork closely with product, design, and the platform and payments engineers What you'll bring to Murmuration Strong experience with database technologies (e.g. Postgres, MySql, SqlServer)Strong experience designing and implementing APIsStrong experience with Node based backend systemsExperience integrating third-party servicesFluency with AI coding tools as part of your day-to-day work, and a sensible view on where they help and where they don'tA strong grounding in the fundamentals: testing, version control, CI/CD, and secure codingComfortable working at an early stage, with a lot of ownershipAn interest in fintech, payments, or financial inclusion Standout candidates will also... Experience in fintech, banking, payments, or another regulated or high-trust domainA track record of shipping AI/LLM features into productionExperience with cloud-native development (AWS/Azure/GCP), containers, and infrastructure-as-codeExperience setting engineering standards or mentoring within a small team Benefits Salary of £70,000 – £85,000 depending on experience30 days holiday per year plus Bank HolidaysHybrid working from our Manchester officeCompany pension schemeAn early, hands-on role building a new platform and teamStructured career path with support for ongoing learning and development