Product Engineer

SR2 | Socially Responsible Recruitment | Certified B Corporation™; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

SR2 | Socially Responsible Recruitment | Certified B Corporation™ in London is seeking Senior Product Engineers to own substantial parts of the stack, spanning backend, data models, APIs and frontend experiences. You will drive technical decisions, design scalable APIs and data schemas, and translate loosely defined problems into production-ready solutions within a fast-moving AI startup.

This role blends hands-on coding with product thinking, and offers hybrid work arrangements in a growing

Qualifications

• Experience building scalable APIs and data models.
• Strong product-focused mindset with ability to translate complex problems into technical solutions.

Responsibilities

• Own product problems end-to-end across backend and frontend stacks.
• Design APIs, schemas and data models that stand the test of time.
• Build intuitive, high-quality user experiences around complex systems.
• Integrate external systems and data into a cohesive platform.
• Take loosely defined problems from whiteboard to production.

Skills

Python

React

TypeScript

APIs

Data models

Tools

API design

Job description

Location: London, hybrid

Tech: Python, FastAPI/Django/Flask, React, TypeScript

If you're looking for an engineering role that might make your brain hurt a little bit, in a good way, this is probably worth a conversation.

I'm working with an ambitious, early-stage AI company building the product, platforms and infrastructure that sit around increasingly capable AI systems, turning them into software that can actually be relied upon in complex, real-world environments.

They're looking for Senior Product Engineers who want to own considerably more than a slice of the stack. You'll work across backend systems, data models, APIs and frontend experiences, while contributing to the product decisions and technical foundations that will shape the company as it grows.

What you'll be doing:

• Owning product problems end-to-end across Python, React and TypeScript
• Designing thoughtful APIs, schemas and data models that will need to stand the test of time
• Building intuitive, high-quality user experiences around technically complex systems
• Integrating external systems, services and data into a cohesive platform
• Taking loosely defined problems from whiteboard through to production