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About the Role
We are searching for an experienced Senior Flutter Engineer to 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. You will put users at the forefront of your thinking and be passionate about great user experience and user interface design, delivering tested, resilient, and performant code in a fast-paced environment. Your role will be pivotal in developing, shaping, and iterating our customer-facing Flutter applications.
Responsibilities
- 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 by unblocking others, making difficult architectural calls, and improving the codebase.
- 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.
Requirements
- Shipped production mobile apps to real customers through full app store release cycles.
- Act as the engineer others turn to for architecture decisions and code review.
- Strong understanding of mobile DevOps 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 with the judgement to know when to rely on them and when not to.
- 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 listens well and collaborates deliberately across product, design and engineering — comfortable working autonomously, and equally comfortable inside a cross-functional team.
- High ownership: turn ambiguous problems into shipped solutions, prototyping early to validate ideas, and take the initiative on improvements rather than waiting to be asked.
Skills
- Flutter
- Mobile DevOps
- CI/CD pipelines
- Release management
- App store deployment
- Software engineering
- Code review
- AI coding tools
- Troubleshooting
- Reactive state management
- Software architecture
- Design systems
- Mobile UX
- Accessibility
- Communication
- Collaboration
- Problem-solving
Location
- London
Work Type
- Hybrid
- Full-time
Experience Level
- Senior
- Experienced
Benefits
- 26 days holiday, increasing with service + buy/sell scheme + bank holidays
- 7% Pension with matched contributions
- Discretionary bonus scheme
- Share schemes (including free shares and BAYE)
- Health Cash Plan and discounted private healthcare
- Free onsite gym
- Enhanced family leave (subject to qualifying criteria)
- Travel and bike loan schemes
- Employee Assistance Programme
- Regular social events including summer and Christmas parties
- Learning and development opportunities tailored to you
- Casual dress code
- Friendly, supportive team environment
About the Company
- At AJ Bell, we believe investing should feel good. Whether you're looking for an ISA, pension or dealing account, whether you want to invest with the help of a financial adviser or do it yourself, we have easy-to-use solutions to suit people from all walks of life.
- We're one of the UK's fastest-growing investment platform businesses, trusted by everyone from professional financial advisers to first-time investors.
- Today, over 762,000 customers trust us to manage more than £121.5 billion of assets. By continually striving to make investing simpler and more accessible, we're helping more people take control of their financial futures.
- We're proud to be recognised as one of the UK's Best 100 Companies to Work For for six consecutive years, and a Great Place to Work® in 2025 and 2026, a reflection of our supportive and collaborative culture.
Equal Opportunity
- We’re committed to creating an inclusive environment where everyone feels respected and able to be themselves at work. We welcome applications from all backgrounds and make hiring decisions based on skills, experience and potential.