Senior Backend Engineer at VC-backed AI fintech startup

Senior Backend Engineer

Company Description VC-backed AI fintech startup

Salary Not Disclosed

Location London, UK

Job Description

You will lead the development of high-performance backend systems for an AI-native platform serving major financial institutions. By building scalable infrastructure and sophisticated agentic workflows, you will enable complex data processing and investment intelligence at scale. This role offers end-to-end ownership in a high-growth environment focused on transforming global finance operations.

Why this role is remarkable

• Join a well-funded Series A startup that has achieved massive revenue growth and established strong product-market fit with top-tier global firms.
• Own the core infrastructure of an AI-first platform, making critical architectural decisions and driving technical strategy for a rapidly scaling engineering team.
• Work alongside experienced startup veterans to build the next generation of intelligent tools for a massive, multi-trillion-dollar financial sector.

What You Will Do

• Design and implement scalable backend services using Python and modern web frameworks to support complex, long-running AI workflows.
• Build and maintain distributed data pipelines and search infrastructure to handle large-scale document processing and real-time data extraction.
• Collaborate with product and AI teams to integrate large language models into core platform features for production-grade reliability and performance.

The ideal candidate

• Has 5+ years of experience building and operating production-grade backend systems at a venture-backed startup or top-tier technology company.
• Demonstrates deep expertise in Python, distributed systems, and modern database technologies like Postgres or various messaging queues.
• Thrives in high-autonomy environments and has a proven track record of taking complex features from initial design to production.