Senior Backend Engineer - AI FinTech, Equity & High Impact

Jack and Jill AI; Greater London; On-site; GBP 70,000 - 90,000; Full time

Job summary

An innovative AI FinTech startup in London seeks a Senior / Staff Backend Engineer to design and implement capabilities for autonomous frameworks, develop data pipelines, and create scalable APIs. The ideal candidate has at least 4 years of software engineering experience, deep expertise in Python and FastAPI, and a track record in high-velocity environments. This is a high-impact opportunity to shape the technical vision of a fast-growing venture with substantial equity potential.

Qualifications

• 4+ years of software engineering experience at a venture-backed startup or top-tier technology firm.
• Deep technical expertise in Python, FastAPI, and distributed systems.
• Proven track record of taking complex products from ideation to production.

Responsibilities

• Design and implement new capabilities for autonomous agentic frameworks.
• Build and maintain scalable data pipelines for complex documents.
• Develop performant APIs and distributed systems for decision-making engines.

Skills

Python

FastAPI

Distributed systems

Postgres

ElasticSearch

Message queues

Job description

An innovative AI FinTech startup in London seeks a Senior / Staff Backend Engineer to design and implement capabilities for autonomous frameworks, develop data pipelines, and create scalable APIs. The ideal candidate has at least 4 years of software engineering experience, deep expertise in Python and FastAPI, and a track record in high-velocity environments. This is a high-impact opportunity to shape the technical vision of a fast-growing venture with substantial equity potential.