Fonoa

Senior/Staff Software Engineer, AI

London, London, United KingdomFull timeStaffPosted 13 days ago
Apply on Fonoa →

Sign into see who you know at Fonoa.

ABOUT ENGINEERING AT FONOA

Engineering is central to how we build the business. We focus on solving real customer problems, not just shipping features. We work in small, high-trust teams, with full ownership across the lifecycle, from design to production and beyond.

We value:

- Ownership – engineers own what they build end-to-end

- Simplicity – we break down complex problems into clear solutions

- Thinking Big - we innovate with modern technologies (LLMs, AI Agents, etc.) to solve meaningful problems

- Quality – scalable, maintainable systems are non-negotiable

- Speed & iteration – we ship fast, learn, and improve continuously

- Collaboration – we win as a team, not as individuals

POSITION OVERVIEW

As Fonoa continues to evolve its product capabilities, we are looking for a Senior or Staff Software Engineer to help us build AI-powered experiences that feel deeply integrated into the product, not layered on top of it.

This is not a role focused on experiments disconnected from production. You will work on real customer-facing systems, building intelligent workflows, natural language interfaces, and agent-driven experiences that make complex problems simpler for our users and internal teams.

You’ll work closely with engineering, product, and design to prototype, iterate, and scale new AI capabilities across the platform. This includes everything from designing backend systems that power AI workflows to shaping model behaviour, evaluation pipelines, and agent orchestration.

We are still early in this journey, which means this role requires someone who is comfortable operating in ambiguity, experimenting quickly, and helping define how AI is applied across products and workflows. We are looking for engineers who combine strong product instincts with deep technical understanding, and who are excited about building practical AI systems that deliver real value.

This is a highly collaborative, hands-on role for someone who enjoys owning problem...