Staff Software Engineer

Job description

Staff Product Engineer

London | Hybrid | Full-time

Salary: Up to £125,000

We’re partnering with a high-growth, AI-native consumer technology start-up that’s tackling a large, complex and highly visible everyday problem at national scale.

They’re looking for a Staff Product Engineer to operate at the intersection of product, engineering and systems design, owning a small number of high-impact initiatives that materially change how customers experience the product and how the platform scales.

As a Staff Product Engineer, you’ll lead complex, cross-cutting initiatives from problem definition through to production, working closely with product, operations and leadership.

You’ll focus on turning ambiguous, real-world problems into simple, reliable systems, shipping incrementally and measuring impact continuously. You’ll also help define the technical patterns, primitives and “paved roads” that enable a small, fast-moving engineering team to scale effectively. This role reports directly into senior technical leadership and has clear visibility at exec level.

Key Responsibilities

• Own and deliver a small number of high-leverage, business-critical initiatives each year
• Translate complex, fuzzy problems into clear technical and product plans
• Design and ship end-to-end solutions in small, frequent production releases
• Act as a domain owner across one or more core areas (e.g. Frontend, workflows, infrastructure, data or AI-driven systems)
• Define reusable patterns, libraries and workflows that improve reliability, speed and clarity across teams
• Mentor and unblock senior and emerging engineers, raising the technical bar across the organisation
• Produce clear written documentation to align engineering, product and operations

Tech Environment

• Full-stack TypeScript, React, Postgres
• Modern cloud infrastructure (AWS, Terraform)
• Strong observability and monitoring practices
• Data platforms and analytics tooling
• AI-powered systems working with complex, unstructured real-world data

(Exact tooling is less important than strong engineering judgement and product thinking.)

What They’re Looking For

• Strong experience operating at Staff / Principal / Lead Engineer level
• Proven ability to lead cross-team, ambiguous initiatives that move core metrics
• Deep product mindset alongside excellent software engineering fundamentals
• Comfort designing systems, workflows and failure modes — not just features
• Enjoys mentoring, improving how teams work, and raising overall engineering effectiveness
• Happy staying hands-on in code while influencing technical direction
• Prefers smaller, high-agency teams over large, process-heavy environments

Benefits

• Competitive salary + meaningful equity
• 33 days holiday (including bank holidays)
• Health & dental cash plans + EAP
• Travel benefits (cycle to work, season ticket loans)
• High-quality equipment and learning budget
• Well-supported, collaborative office environment

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full Time Jobs

Published at

04-02-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English