Senior Product Engineer (up to £150k)

Dex; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Confidential Company is building an AI-powered recruiting platform that connects software engineers with fitting opportunities, scale-fast, and solve a widespread pain.

You’ll own end-to-end product slices—from spec to production—work with Python, FastAPI, Postgres, Redis, and React/TypeScript, and ship features with real impact. This backend-heavy role emphasizes ownership and reliability in production systems.

Qualifications

• Proven track record owning and shipping end-to-end features that scaled.
• Deep Python backend experience: FastAPI, async patterns, Postgres.
• Experience integrating LLMs in core paths with production reliability.
• Strong API discipline: data integrity, error handling, idempotence.
• Frontend experience: shipping React/TypeScript UI and PR review.

Responsibilities

• Design and build core features for an AI-powered recruiting platform.
• Integrate large language models directly into critical product paths.
• Develop backend services with Python, FastAPI, and Postgres for production-grade stability.
• Ship frontend components in React and TypeScript.
• Define and enforce API contracts ensuring data integrity and clear error handling.

Skills

Python backend

FastAPI

Async patterns

API design

LLM integration

Frontend (React)

TypeScript

Tools

PostgreSQL

Redis

Job description

The role

Most engineers hate job searching. This company is fixing it. They're building an AI recruiter that cuts through the noise, connecting top software engineers with companies that truly fit. Backed by leading investors, they're scaling fast, solving a problem that impacts millions.

This isn't a ticket-taker role. You'll own entire product slices, end-to-end, from spec to production. Think rich candidate databases, AI-powered matching dashboards, and workflows that transform recruiting operations. It's backend-heavy, full-stack, with LLMs in the critical path – not a side project. You ship, you own it, and it stays shipped.

The work

• Design and build core features for an AI-powered recruiting platform, from rich candidate search and filtering to operational dashboards.
• Integrate large language models directly into critical product paths, ensuring reliability and performance for AI-driven features.
• Develop robust backend services using Python, FastAPI, and Postgres, handling async patterns and ensuring production-grade stability.
• Ship pragmatic frontend components in React and TypeScript, unblocking yourself to deliver complete user experiences.
• Define and enforce API contracts, ensuring data integrity, idempotence, and clear error handling across the system.

What You Bring

• Proven track record owning and shipping end-to-end product features that scaled and stuck, with minimal supervision.
• Deep Python backend expertise: FastAPI or similar, async patterns, Postgres, Redis, with a default for production reliability.
• Experience building products where LLM integration is in the critical path, not an add-on, understanding production reliability challenges.
• Strong API discipline: you consider data integrity, error paths, idempotence, and versioning before shipping.
• Comfortable shipping workable frontend in React and TypeScript; you can build UI and review PRs to unblock delivery.

This is a rare seat at a company solving a hard problem. Confidential Company helps you cut through the noise.