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🥝 Senior Backend Engineer

Monzo | cardiff, United-Kingdom | Posted May 19, 2026

Job Description

Overview

Monzo is a digital bank built by about 400 engineers. We design and build an in‑house banking platform that powers products used by millions. Our squads span core banking, payments, security, and more, working across disciplines from product to data science.

Responsibilities

As a backend engineer you will collaborate with product managers, designers, mobile and web engineers, and data analysts to build and maintain the services that power the Monzo experience. You will design API endpoints, write resilient distributed systems, and help drive the architecture of our platform.

Qualifications

  • Strong experience building backend services for a technology product.
  • Product mindset – care about customer outcomes and make data‑informed decisions.
  • Comfortable working in an ambiguous, cross‑functional team.
  • Interest in distributed systems and writing resilient software.
  • Experience with stron...

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