Senior Software Engineer (Javascript)
Location: Brighton (Hybrid - 2 days per week in the office, 3 days per week at home)
Department: Technology
Position type: Full time

THE ROLE

We’re looking for a Senior Software Engineer (JavaScript) to join our Brighton-based engineering team. You’ll design, build, and maintain features for our customer-facing website and internal applications, working mainly with React and TypeScript/JavaScript, and integrating with Python APIs in a service-oriented, containerised environment.
At MPB, we embrace innersource principles and a cloud-native approach, fostering shared ownership, openness, and continuous learning. You’ll collaborate closely with engineers, product managers, and designers in Brighton, and with colleagues in Berlin and New York. We operate a hybrid model with in-office days on Wednesdays and Fridays.

WHAT YOU WILL BE DOING

• Implementing new features in TypeScript/JavaScript using React
• Contributing to and evolving our atomic React component libraries
• Collaborating with UX designers to ensure high standards of user experience and design consistency
• Working closely with Backend Engineers and Test Automation Engineers to deliver reliable API integrations
• Fixing bugs, responding to changing requirements, and continuously improving existing features
• Writing unit and integration tests to maintain code quality and stability
• Documenting APIs and components for downstream consumers including Frontend, Backend, Test Automation, and Data Analytics teams
• Providing technical guidance, mentoring, and pair programming support to less senior engineers