5 months ago
London, United KingdomSenior
Responsibilities
- Own the design and delivery of significant backend systems and services across a product domain.
- Lead complex multi-sprint initiatives spanning multiple engineers and stakeholders.
- Identify bottlenecks, propose architectural changes, and execute safe production scaling and migration work.
- Design and operate distributed and event-driven systems with attention to consistency, idempotency, partitioning, retries, observability, and failure handling.
- Contribute to decisions about service boundaries, data ownership, and platform evolution.
- Conduct code reviews, mentor senior and mid-level engineers, and raise engineering standards.
- Partner with Product, Data Engineering, editorial, legal, and financial domain experts to scope and deliver work.
- Improve developer experience through tooling, testing, observability, paved-road development, and legacy-system cleanup.
- Use AI-assisted engineering for system understanding, prototyping, and code delivery.
Requirements
- Several years of senior backend engineering experience and a record of leading technical initiatives end to end across a product domain.
- Production experience designing distributed systems and handling failure modes, observability, data consistency, and graceful degradation.
- Demonstrated success solving database scaling, throughput, latency, or cost problems.
- Experience designing and operating production event-driven architectures using message queues or streaming systems.
- Strong API, service-boundary, persistent-storage, and client data-flow design skills.
- Strong Python experience, including modern web frameworks such as FastAPI, with Pydantic and strong typing.
- Deep knowledge of SQL and relational data modeling.
- Excellent collaboration and communication skills, including explaining complex systems and tradeoffs to nontechnical stakeholders.
- Strong product and customer mindset with sound judgment balancing delivery and long-term system health.
- High standards for code quality, testability, and operational maturity, with a record of improving teams through review and mentorship.
- Experience with complex permissioning or access-control systems is nice to have.
- Experience with document-management systems, security practices, legacy modernization, workload migration, data-pipeline orchestration, or AI and LLM-based solutions is nice to have.
Benefits
- Competitive salary, pension contributions with employer matching up to 7%, private medical insurance, paid sick leave with income protection, and group life assurance.
- Season ticket loan and Cycle to Work schemes.
- 25 holiday days per year plus local public holidays, with the option to exchange holidays for alternative days.
- Hybrid working model with flexibility over where and when to work.
- Work abroad for up to three months per year.
- One month of paid sabbatical after five years of service.
- Enhanced parental leave and flexible working arrangements.
- Professional learning and development budget, quarterly team socials, and summer and winter company events.
About 9fin
9fin builds an AI-driven intelligence platform for the global debt markets, combining real-time news, credit data, and analytics for investment banks, asset managers, advisors, and law firms. It sells subscriptions to tools that centralize deal information, public and private credit data, and workflows across leveraged finance, structured credit, and distressed debt. Founded in 2016 and headquartered in London, the privately held company reports adoption by 300+ financial institutions worldwide.