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Senior Product Engineer, Backend

London💼 Full-time🗓 2026-02-26 → 2026-09-26

Core

Designing and building backend services, APIs, and data processing automation for a global debt market platform serving 300+ blue-chip institutions.

Role type

Senior IC Backend Engineer

Builds

Backend services, web application tools, APIs, and data processing automation for the 9fin platform

Domain

Financial technology / Debt markets

Deliverable

production ML models | product features | infrastructure

Required skills

Python, FastAPI, PostgreSQL, API design, Service Oriented Architecture, SQL, system design, code review

Preferred skills

Data modelling, pipeline orchestration

Technologies

Python, Flask, FastAPI, PostgreSQL, AWS, AWS Lambda, Docker, ECS, Pydantic

Responsibilities

Lead projects by defining and designing systems and building proof of concepts; Develop and engineer backend services and web application tools; Run code reviews and mentor junior developers; Continually improve the codebase through automation, refactoring, and documentation; Collaborate with cross-functional teams including financial and legal colleagues; Implement complex financial data modelling, access control logic, and ML/AI prediction services.

Seniority

Senior, hands-on IC

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