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Monzo

Senior Platform Engineer

Posted on 20 July 2026

About the role

💼 What you will do

• Build and maintain the infrastructure, tools, and processes that set the rest of Monzo's technology teams up for success within the Platform Collective. • Work across Kubernetes clusters, service mesh, and networking that all of Monzo's microservices run on, using software engineering skills to manage cloud infrastructure across AWS and GCP. • Help support Monzo's ambitions to grow from 10 to 20 million customers, expand product range, and set up foundations for scaling globally. • Work remotely from anywhere in the UK or from Monzo's London office, with flexible working hours and no pressure to come in.

📋 Job Requirements

• Have significant professional experience in software engineering, demonstrated by writing, testing, and deploying robust backend services using strongly typed languages. • Have hands-on experience working with AWS and/or GCP, and be proficient with Kubernetes. • Be naturally inclined to solve problems through automation and have experience with Infrastructure as Code such as Terraform. • Be deeply curious about systems, enjoy diving deep to investigate complex issues, and understand how modern distributed applications fail and scale. • Be excited to build a platform that enables success for everyone at Monzo, focusing on reliability, performance, and developer experience. • Be comfortable working in a fast-paced team that deals with ambiguity and evolving requirements.

🌟 Nice-to-have

• Have direct experience with Go for application and platform service development. • Bring experience managing Kubernetes clusters at scale including underlying cluster management. • Have experience with Envoy Proxy or similar service mesh technologies for RPC. • Bring experience with infrastructure migrations, high-scale traffic management, or security tooling. • Have experience abstracting away infrastructure complexity to provide self-service experiences for other engineering teams.

🎯 Responsibilities

• Enhance and maintain foundational tools and systems across Monzo's core infrastructure and application platform. • Work hands-on with Kubernetes clusters, AWS infrastructure, and configuration management using Terraform. • Integrate and manage various open-source components to provide robust, scalable primitives for engineering teams. • Design and implement backend services including APIs and controllers that provide a simplified, self-service experience for other engineers. • Develop software for complex projects like infrastructure migrations, high-scale traffic management, or security tooling. • Help other platform teams succeed at using cloud infrastructure by abstracting away complexity and enabling them to solve real customer problems.

About Monzo

📊 Monzo at a glance

🚀 Why Join - Our Take

We have been Monzo customers for years and have always loved their beautiful, simple app UI. We believe their product has a positive impact on millions of customers, motivating them to be more conservative with their spending and helping them save money. Monzo, as a company, has consistently grown over the past 10 years and is known for its strong company culture, generous benefits, and leadership that strives to be truly transparent and cares about its colleagues. It is a company that helps you advance your career and grow as a professional, working with great teams. If you like to join a thriving, upcoming bank and help millions of customers lead a financially sound life, Monzo gives you the opportunity to push ahead.

😃 What Monzo offers

• Earn £95,000–£130,000 plus incentive awards tied to performance. • Receive visa sponsorship and relocation assistance to the UK. • Work remotely from anywhere in the UK with no pressure to come into the office, or from Monzo's London office. • Work flexible hours that suit you and your team, with freedom for children drop-offs and pick-ups, appointments, and personal commitments. • Access a £1,000 annual learning budget for books, training courses, and conferences. • Receive support with travel costs if asked to visit the London office from outside London.

💖 What makes Monzo unique

Monzo is on a mission to make money work for everyone. With around 600 engineers out of roughly 5,000 people total, the Platform Collective builds and maintains the infrastructure, tools, and processes that set the rest of Monzo's technology teams up for success. The Infrastructure Platform team manages the Kubernetes clusters, service mesh, and networking that all of Monzo's microservices run on, investing heavily to support growth from 10 to 20 million customers and global expansion.

💬 What employees say

"It does truly feel like we are trying to solve pertinent problems in people’s lives, their ability to achieve more and be better with their money. I feel very priviledged to be a part the mission here at Monzo."

Heldiney Pereira
Product Designer

This position is no longer available, but we have other great opportunities!

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