Senior Flutter Engineer

We are searching for an experienced Senior Flutter Engineer to work in a product centric role, helping us bring feel good investing to life. You will help build the Flutter app that is replacing our long-standing native iOS and Android apps, serving a D2C business of over 500,000 customers, a large proportion of whom manage their investments through the app. You will put users at the forefront of the way you think and be passionate about great user experience and user interface design.

You will be able to deliver tested, resilient, and performant code against a fast-paced environment. Your role will be pivotal in helping us achieve our mission by developing, shaping, and iterating our customer facing Flutter applications. We work hybrid, with at least 50% of your time in the office.

This is a hands-on individual contributor role in a cross functional team. You won't line-manage, but you will have a strong influence on how the team builds — through pairing, code review, mentoring and the technical standards you set.

• Architect solutions with your team and write the technical documents that define what we're building.
• Write well-formulated, testable and readable code using appropriate software paradigms.
• Multiply the team's output — unblock others, make the difficult architectural calls, and leave the codebase easier to work in than you found it.
• Ensure accessibility is at the forefront of our approach.
• Mentor and develop others in the team, through pairing, reviewing pull requests, and advocating development standards to be followed by existing and new team members.

We care more about how you think than which packages you've used, but this is the shape of the work.

• A Flutter monorepo — one app plus a set of internal packages.
• Layered Clean Architecture, enforced in CI.
• A design system built from Figma design tokens and catalogued in Widgetbook.
• A backend-for-frontend that drives parts of the UI, so screen composition can change without an app release.
• Git Hub Copilot for every engineer, with repo-level instructions and custom skills we've built to keep AI output aligned with our architecture and patterns.

You've shipped production mobile apps to real customers through full app store release cycles, and you're the engineer others turn to for architecture decisions and code review. Your Flutter experience might come from production work, or from a strong native background plus substantial Flutter projects.

• Strong understanding of mobile Dev Ops practices, including CI/CD pipelines, release management, and app store deployment processes.
• Advanced software engineering skills, including writing high-quality code, conducting thorough code reviews, and proactively identifying anti-patterns and maintainability risks.
• Comfortable using AI coding tools to work faster, with the judgement to know when to rely on them and when not to. You own the code you ship, however it was produced.
• Proven ability to diagnose, troubleshoot, and resolve defects across the mobile application lifecycle.
• Solid knowledge of reactive state management patterns and how to apply them in mobile architectures.
• Strong grasp of software architecture principles, with the ability to communicate and document designs clearly for both technical and non-technical audiences.
• Experience building products on top of a design system — consuming and extending shared components rather than reinventing them, and knowing when something belongs in the shared library rather than in your feature.

• Strong passion for mobile UX and building inclusive products, with working knowledge of accessibility best practices and relevant standards.
• A clear communicator who…