Senior Flutter Engineer — Build Trusted Investment App

AJ Bell; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

26 days holiday

Pension with matched contributions

Discretionary bonus

Share schemes

Health cash plan

Free onsite gym

Enhanced family leave

Travel and bike loan

Employee assistance programme

Job summary

AJ Bell is seeking a Senior Flutter Engineer to help shape the next generation of our customer-facing mobile experience. You will build and own parts of the Flutter app, collaborating with product, design and engineering to deliver accessible, performant mobile software for hundreds of thousands of customers.

You’ll lead technically, mentor peers, and drive architectural decisions while enjoying a hybrid work model in a product-centric environment that values user-first thinking and quality code.

Qualifications

• Shipped production mobile apps for real users.
• Experience with Flutter or strong native background plus Flutter projects.
• Strong understanding of mobile architectures and design systems.
• Comfort with AI coding tools and proactive quality improvements.
• Ability to write clear documentation and review code effectively.

Responsibilities

• Architect solutions with the team and document decisions.
• Write well-structured, testable code and maintainability practices.
• Build resilient, accessible mobile experiences with a customer focus.
• Diagnose, troubleshoot and fix defects across the app lifecycle.
• Mentor peers, conduct code reviews and raise engineering standards.
• Collaborate with product, design and engineering to iterate the app.

Skills

Flutter

Mobile DevOps

Code reviews

AI coding tools

Reactive state

Software architecture

Design system

Tools

GitHub Copilot

Widgetbook

Kotlin

Swift

CI/CD

Job description

AJ Bell is seeking a Senior Flutter Engineer to help shape the next generation of our customer-facing mobile experience. You will build and own parts of the Flutter app, collaborating with product, design and engineering to deliver accessible, performant mobile software for hundreds of thousands of customers.

You’ll lead technically, mentor peers, and drive architectural decisions while enjoying a hybrid work model in a product-centric environment that values user-first thinking and quality code.