Senior Frontend Developer

Company Description

Who we are...

At Trustonic, we make smartphones affordable for the many, enabling global access to devices and digital finance through the world’s most secure smartphone locking technology. We partner with mobile carriers, retailers, and financiers across 30+ countries, powering device financing solutions that drive economic inclusion, profitability, and growth.

We pride ourselves on living by the Trustonic culture code, a blueprint for our journey that recognises that great working environments don’t guarantee success, but bad ones almost always ensure failure.

Working here, you’ll find a company that celebrates its diversity and is looking to do the right thing: for each other, the community and the planet. We believe in equal opportunities and take to heart the old African proverb ’If you only want to go fast, go alone. If you want to go far, go together’.

We work flexibly when and where we’re at our best, but regardless of how you choose to work, we’ll make sure you feel like one of the team.

if you would like to find out more about Trustonic's culture code.

If you would like to work in a fast-moving global technology company, with great ambition, then we’d love to hear from you!

A bit about the job and what you’ll deliver…

As a Senior Frontend Developer
, you'll take ownership of a modern React and Type Script application, helping to shape its architecture and deliver high-quality, accessible and responsive features. You'll work across the frontend stack, from component design and application architecture through to build tooling, testing and integration with AWS Amplify and App Sync/GraphQL services.

You'll have the opportunity to make sound technical decisions, improve existing patterns and help set engineering standards across the frontend. Working closely with designers, backend engineers and Product, you'll deliver polished, production-ready features while continually improving performance, maintainability, developer experience and the overall quality of the platform.

Please note, this is a remote role with attendance required at our office in Winnersh from time to time.

What you’ll do…

• Design, build, and maintain production features in a React 18+ Type Script application
• Own and improve our Vite-based development and build pipeline, including custom plugin configuration
• Design reusable, maintainable components and frontend architecture
• Build accessible, responsive user interfaces using Ant Design and custom SCSS
• Integrate frontend features with AWS Amplify and App Sync/GraphQL backends
• Work with GraphQL schemas and client-side data-fetching patterns to deliver reliable application features
• Implement and maintain internationalization (i18n) across the application
• Write and maintain high-quality unit and integration tests using Vitest, Testing Library, and MSW
• Identify and address frontend performance, usability, accessibility, and maintainability issues
• Contribute to and enforce engineering standards around linting, formatting, testing, and pre commit checks
• Participate in code reviews and architecture discussions, providing thoughtful technical feedback
• Help maintain frontend dependencies and contribute to security and vulnerability auditing
• Investigate and resolve production issues and technical debt
• Collaborate with designers, backend engineers, and product stakeholders to deliver polished, production-ready features
• Contribute to improvements in developer experience, shared tooling, and reusable components

What we’re looking for…

• Demonstrableprofessional frontend development experience, with significant hands-on experience building production applications with React and Type Script
• Demonstrated ability to own features from technical design through implementation, testing, review, and delivery
• Ability to work independently in an established codebase while respecting and improving existing conventions
• Strong architectural judgement and the ability to explain technical decisions and trade-offs clearly
• A strong testing mindset — you write tests because they provide confidence and help the team move faster
• Strong attention to accessibility, maintainability, performance, and user…