Software Engineer (backend)

Software Engineer (backend) Location: UK (Remote) Salary: £125k -£145k + annual performance bonus No visa sponsorship offered Capital markets move trillions. The legal documents underpinning those transactions are dense, nuanced, and mission-critical, and right now, most of that complexity is still handled by hand. This company is changing that.Built on years of machine learning PhD expertise, backed by a top-tier venture firm, and now operating at global scale following a high-profile acquisition, this team is tackling some of the hardest NLP problems in finance and law. Their customers include many of the world's leading law firms and the demand for what they're building is accelerating fast. As a Software Engineer, you won't be maintaining someone else's roadmap. You'll be architecting the critical backbone between a cutting-edge AI data platform and the professionals who depend on it daily. Your decisions will ship. Your influence will stick. If you want to do the most meaningful work of your career, in a team that moves fast, thinks deeply, and gives a damn about craft - read on.

The RoleDesign and build scalable backend services and APIs that power a document analysis platform used by major legal and financial institutionsWrite high-performance, maintainable server-side code and data processing pipelinesDefine clear, efficient API contracts and contribute meaningfully to service architecture decisionsDesign compositional API primitives that accelerate the productionisation of a growing library of document insightsBuild and maintain integrations with third-party services and internal ML systemsContribute to frontend features and components as needed to deliver end-to-end functionalityDrive performance optimisation for data-intensive backend operationsChampion engineering excellence - contribute to code practices, design patterns, and long-term maintainabilityImprove developer experience by automating and improving CI/CD and day-to-day production operations Skills NeededRequired:6+ years of professional full-stack development experience with a strong backend focusProficiency in backend technologies - Python (FastAPI, Django, or Flask) is preferred; Node.js, Java, or Go also consideredStrong understanding of RESTful APIs, database design, and data modelling (SQL and NoSQL)Experience with containerisation and orchestration (Docker, Kubernetes) and cloud platforms (AWS preferred)Proficiency in TypeScript and React for frontend contributionsFoundation in distributed systems, event-driven architectures, and web fundamentalsStrong communication skills and a self-starting, action-biased approach to problem-solvingBachelor's degree in Computer Science or related field, or equivalent practical experience Preferred:Experience with microservices architecture and message queuesExperience building data processing pipelines or working with large-scale data systemsFamiliarity with CI/CD best practices and single-tenant architecturesExperience optimising backend performance for data-intensive applicationsMentorship experience and a track record of ownership in previous rolesInterest in language, economics, or legal/financial domains

Benefits15 - 20% annual performance bonusFully remote - work from anywhere in the UKPrivate medical, dental, and vision insurancePension and retirement planning supportHealth and wellbeing reimbursement (including fitness and mindfulness)Flexible paid time off