Product Engineer

Workonomics; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Workonomics in London is seeking a hands-on, full stack engineer to own the product outcome end to end. You’ll scope, architect, implement, and release features that mature our fintech cash infrastructure.

You’ll help build the London engineering team while staying connected to the wider company in Europe, tackling regulatory and product challenges as the business expands.

Qualifications

• Senior+ engineers with strong fundamentals and real product judgement.
• Curious and quick to learn the domain; no finance background required.

Responsibilities

• Own the product outcome end to end, from scoping and architecture to implementation and production release.
• Lead the London engineering team and collaborate with the wider company in Europe.
• Tackle challenging regulatory, product, and technical problems as the company expands.

Skills

Senior+ engineers

Product judgement

Strong fundamentals

Ownership

Curious learner

Tools

TypeScript

Job description

Building the financial plumbing idle cash should have had all along.

Company | Fintech rebuilding how we hold and move cash

Stage | Series B, backed by top VCs and notable angels

Size | 60 people, hiring 5 engineers by end of 2026

Areas | Full stack engineering, product development

Based | Central London

Background

Most corporate cash sits in accounts earning close to nothing. The infrastructure underneath it was built decades before software-native finance teams existed. Businesses collectively give up billions in returns every year because of this.

This company is rebuilding that layer. It's already operating at real scale, serving thousands of businesses and individuals. International expansion is the next chapter.

What this team builds

The team is shipping several new products over the coming months, covering instant access to funds, rate-based features and agentic tooling for finance teams. They're launching in to new markets at pace, which means challenging new regulatory, product and technical problems every few weeks.

What this role is

A hands-on, full stack builder, owning the product outcome end to end. You'll get a problem and take responsibility for the scoping, architecture, implementation, and production release.

This is a chance to build the London engineering team while staying closely connected to the wider company in Europe.

Who this is for

• Senior+ level engineers with strong fundamentals and real product judgement
• People who'd rather be handed a problem than a ticket
• Someone who's curious and quick to learn the domain - no finance background needed
• Comfortable with any strongly-typed language, ideally TypeScript

Prefer to be even more customer-facing? There's also a team here building the core API and SDK, offering something closer to a Forward Deployed Engineer role.