Backend Engineer
Location: Kings Cross, London
Salary: £85,000-105,000
Contract: Permanent
Working pattern: In office 3 days a week
A newly formed software venture backed by an established global investment-services business is hiring a Backend Engineer to build the platform its product runs on. You'll design multi-tenant data and workflow services in Python and FastAPI and own the integration layer between a Java/Spring core and Python AI services. This is one of nine engineering hires across front-end and back-end.
THE ROLE
Investment professionals need APIs and workflows that respect permissions, keep an audit trail and fail safely when an AI result can't be trusted. You'll build the services behind that.
Report to the Head of Engineering as part of the UK core team.
Build multi-tenant data and workflow services, plus the integration layer between the Java/Spring core and the Python AI services.
Ship through disciplined CI/CD alongside the India-based delivery organisation.
Combine service design with the production constraints of demanding enterprise users.
Join a nine-person engineering cohort being hired across front-end and back-end.
WHAT YOU'LL BE DOING - SERVICES AND CONTRACTS
Design REST and asynchronous services in Python 3.11+ and FastAPI.
Work at Java/Spring boundaries with PostgreSQL and async SQLAlchemy persistence.
Implement tenant isolation, context, role-based access and configuration.
Version and evolve contracts between core and AI services without breaking consumers.
WHAT YOU'LL BE DOING - PRODUCTION QUALITY
Maintain comprehensive unit and integration tests with pytest and pytest-asyncio, and uphold code review standards.
Use OpenTelemetry traces, structured logs, metrics and actionable alerts to expose model-call latency, failure rates and token cost.
Build validation, schema enforcement and safe failure behaviour for outputs that may be well-formed yet wrong.
Treat authentication, authorisation, secrets, input validation, OWASP awareness and audit trails as everyday engineering.
WHAT YOU'LL BE DOING - DELIVERY AND COST
Deploy and operate on AWS using EKS/ECS patterns, RDS and S3 through Jenkins quality...
Backend Engineer in East Kilbride employer: Oscar Associates Limited
Join a dynamic and innovative team as an IP Services Engineer, where you will thrive in a collaborative work culture that values technical expertise and problem-solving skills. Our company offers competitive benefits, including professional development opportunities and a commitment to employee growth, all within a large enterprise technology environment that prioritises service reliability and performance. Located in a vibrant area, we provide a stimulating workplace that encourages creativity and teamwork, making it an excellent choice for those seeking meaningful and rewarding employment.
