Senior Flutter Engineer — Hybrid Mobile Innovator

AJ Bell; London Borough of Southwark; Hybrid; GBP 90,000 - 125,000; Full time

Benefits offered by this job

26 days holiday

Pension with matched contributions

Discretionary bonus scheme

Share schemes

Health Cash Plan

Free onsite gym

Enhanced family leave

Travel and bike loan schemes

Employee Assistance Programme

Job summary

AJ Bell in London is seeking a Senior Flutter Engineer to help shape the next generation of our customer-facing mobile app. You will join a product‑centric team building a high‑quality experience for hundreds of thousands of users, balancing excellent UX with robust, scalable code.

You’ll work with Product, Design and Engineering to turn customer needs into reliable mobile features, practicing modern architecture, code quality, accessibility and thoughtful engineering at every stage.

Qualifications

• Shipped production mobile apps for real customers.
• Experience with Flutter or strong native mobile background with Flutter projects.
• Strong software engineering practices and code quality focus.

Responsibilities

• Architect solutions with the team and document decisions.
• Write well-structured, testable code and ensure maintainability.
• Build resilient, accessible mobile experiences with a customer focus.
• Diagnose and resolve defects across the mobile app lifecycle.
• Mentor engineers through pairing, code reviews and guidance.
• Contribute to architectural decisions and improve the codebase.

Skills

Mobile DevOps

Code reviews

Architecture principles

Reactive state management

Design system

Accessibility

AI coding tools

Tools

Flutter

Kotlin

Swift

Widgetbook

Figma design tokens

GitHub Copilot

Job description

AJ Bell in London is seeking a Senior Flutter Engineer to help shape the next generation of our customer-facing mobile app. You will join a product‑centric team building a high‑quality experience for hundreds of thousands of users, balancing excellent UX with robust, scalable code.

You’ll work with Product, Design and Engineering to turn customer needs into reliable mobile features, practicing modern architecture, code quality, accessibility and thoughtful engineering at every stage.