Software Engineer, Quality & Product Integrity or Remote

Staff Software Engineer, Quality & Product Integrity

Cardiff, London or Remote (UK)

🚀 We’re on a mission to make money work for everyone.

We’re waving goodbye to the complicated and confusing ways of traditional banking.

With our hot coral cards and get-paid-early feature, combined with financial education on social media and our award winning customer service, we have a long history of creating magical moments for our customers!

We’re not about selling products - we want to solve problems and change lives through Monzo ❤️

We have around 450 engineers out of roughly 5,000 people in total - and we have big ambitions. There are many interesting challenges ahead, and we're happy for people to move between teams or to specialise, whatever you prefer. As an engineer here you'd be able to work directly with anyone across the company, and we run regular knowledge-sharing sessions so you’ll learn heaps about everything from how banks work to effective communication.

Our mission is to help Monzo scale effectively, empowering our technology teams to build magical experiences for our customers all over the world.

Product Integrity exists to help Monzo scale product quality without scaling cost, risk, or manual effort — especially as we expand across markets, languages, and regulatory contexts.

Our focus is on solving a small number of hard, high-leverage problems
:

• Understanding and reducing the true Cost of Quality (CoQ)We aim to build a credible, trusted model that makes quality costs visible — where defects, rework, incidents, and manual checks are coming from — and use that insight to materially reduce waste and risk over time.
• Scaling quality across markets and locales
  As Monzo expands internationally, we need ways to validate correctness, localisation, and customer experience without relying on manual, market-by-market QA
  . This includes solving localisation QA at scale and maintaining confidence as products span multiple countries, currencies, and languages.
• Building confidence through signal, not ceremony
  Teams should be able to clearly see where they have strong quality signals — and where they don’t — for critical customer journeys. The goal isn’t more tests, but the right signal in the right places to support fast, confident delivery.
• Reducing noise while preserving our incident culture
  We want to catch and resolve small issues early, before they escape into SEVs, while still preserving Monzo’s strong, values-driven approach to incidents and learning.
• Using AI to fundamentally change the economics of quality
  We’re exploring how AI can help us move from reactive, manual quality work to proactive, scalable systems — from test generation and defect triage to root-cause analysis — increasing leverage across the organisation rather than adding process.

At its core, Product Integrity is about making high quality the default outcome as Monzo grows — not by slowing teams down, but by giving them better systems, better signal, and better trade-offs.

A Staff Engineer at Monzo is a technical (IC) leadership position. You will have wide influence, working with other collectives to grow Monzo.

More specifically, you’ll:

• Expect to be hands on and technical with code, using your software engineering and system building skills and expertise to lean in and solve deep technical challenges
• Drive behavioural changes and accountability across Monzo using data — influencing technical and non-technical stakeholders beyond a single team or domain
• Set both technical and strategic direction in an area that cuts across backend systems, data pipelines, mobile clients, CI/CD, release processes, and analytics
• Build a deep understanding of our platform and then work to strengthen the reliability surface that sits between teams — building and enhancing the tools, patterns and guardrails that make resilient choices the easy ones
• Promote and maintain a culture where every engineer feels supported to feel confident in Monzo’s quality and product integrity
• Understand several work‑streams across your group, keeping enough context to regularly provide technical advice and challenge to other engineers
• Use your expert knowledge and experience to lead…