Senior Full Stack Software Engineer

You’d join our Software team. Supporting a react-native multi platform customer mobile app, an react-native android app used by our operations teams, an automated tasking engine, python backend microservices deployed on Kubernetes in our GCP infrastructure..

We’re a small team, so the work is varied and you’ll touch most of the stack. In your first six months we’d expect you to:

• Own problems end to end, from an ambiguous “riders are reporting X” through to a fix in production
• Shape architecture, not just implement it: you’ll be in the room when we decide how a new system should work, and we want you pushing back when we’re wrong
• Get to know a significant area of the platform well and become someone the team turns to when decisions come up there
• Raise the bar around you through code review, pairing and sharing knowledge

We’re not looking for someone strong in everything. We’re looking for genuine depth in one area; mobile, backend or frontend, plus enough range to work confidently across the others. If you’re a Python engineer who’s comfortable in React, or a React Native developer who can hold their own on a backend service, please apply.

We’re evolving how to fit AI into our workflow responsibly, whilst continuing to focus on quality and a good understanding of our codebase.

Our technology stack consists of:

• React Native mobile applications
• React web applications
• GraphQL layer using Apollo Server and Apollo Client
• Python services running Flask and FastAPI
• Kubernetes based microservice architecture running on Google Cloud Platform
• Cloud Postgres and Google BigQuery datastores with DBT data transformations
• Google PubSub and MQTT messaging
• Terraform infrastructure orchestration
• CI/CD via CircleCI and Helmfile (server) and Bitrise (mobile)
• Error reporting using DataDog and Sentry
• Claude code

What we’re looking for

Depth in at least one of these:

• Backend - Python in production, including running and supporting live services
• Frontend - TypeScript and modern JavaScript, with real React experience beyond the basics: context, async state, composition patterns
• Mobile - React Native and shipping to the app stores, Equalities Act we are committed to continuing to improve our workplace culture and environment. To make sure we are supporting all staff, we have two mental health first aiders and take care to look out for one another. We value employees from diverse backgrounds and family arrangements, and have flexible working policies that support our staff in balancing their personal and work lives.

• Enough range to work confidently outside it. You don’t need to be expert everywhere, but you should be comfortable reading and contributing across the stack
• Comfort with relational databases and designing schemas that hold up
• Pride in readable, well-tested software, and the ability to explain why a design is the right one
• The judgement that comes with seniority: knowing what to build, what to leave alone, and when to say so

Great if you have it, fine if you don’t:

• Any of the three areas above that isn’t your main one
• Docker and containerised applications
• Building and consuming REST and GraphQL APIs
• Kubernetes, Terraform, or GCP
• Experience working with AI coding agents
• IoT and distributed connected hardware in the real world

• A combination of the highest quality team and product - we are winning work because of our ability to demonstrate that we are market-leading
• A flexible working environment
• Cycle to Work Scheme
• Enhanced Parental Leave
• 24 days holiday, plus bank holidays
• Beryl Bikes membership
• Employee pension scheme
• Birthdays off
• Work from Anywhere opportunities

Our interview process

1. 30-minute intro call with our talent team
2. An initial conversation with the Head of Technology
3. A longer technical conversation with two engineers which will include a short technical task

Diversity

Every ride on a Beryl bike, e-bike or e-scooter is a journey that didn’t happen in a car. In 2025 that added up to more than 3.5 million journeys., * The chance to build the business and help Beryl on our journey to become one of the biggest micromobility operators in the world.