Flutter Tech Lead – Contract

Instil

Flutter Tech Lead overseeing the design and development of mobile and web applications at Instil. Driving engineering standards and mentoring team members in a hybrid work environment.

Posted 7/1/2026contractBirmingham • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies

DartFlutterRedux

About the role

Key responsibilities & impact

Lead the design and development of cross-platform applications using Flutter and Dart
Drive technical architecture decisions and establish engineering best practices
Mentor and support developers across the team, promoting quality and continuous improvement
Implement and maintain robust state management approaches using technologies such as BLoC, Cubit or Redux
Manage and optimise large-scale codebases, shared libraries and monorepo-based development environments
Ensure security best practices are embedded throughout the application lifecycle, including authentication, certificate pinning and device attestation
Design and maintain comprehensive automated testing strategies across unit, component and integration testing
Monitor and improve test coverage and quality standards across the platform
Profile, troubleshoot and optimise application performance across mobile and web environments
Own and improve CI/CD pipelines, preferably using GitHub Actions
Identify and prioritise technical debt while balancing ongoing feature delivery
Contribute to planning, architecture discussions and continuous improvement activities across the team

Requirements

What you’ll need

7+ years' software engineering experience with significant experience building mobile applications
Strong commercial experience developing cross-platform applications using Flutter and Dart
Previous experience in a technical lead or senior engineering role
Deep understanding of reactive state management patterns including BLoC, Cubit or Redux
Experience working with monorepos and managing shared dependencies across multiple applications
Strong understanding of mobile and web security principles
Proven experience implementing automated testing frameworks and quality strategies
Strong knowledge of performance profiling, troubleshooting and optimisation techniques
Experience designing and supporting CI/CD pipelines
Excellent problem-solving skills and a pragmatic approach to delivery
Strong communication skills and experience working closely with technical and non-technical stakeholders.

Benefits

Comp & perks

Reasonable travel and accommodation expenses for onsite attendance will be covered.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Cross-Platform Application DevelopmentMobile Application DevelopmentState Management PatternsPerformance ProfilingTroubleshooting TechniquesSecurity Best PracticesTechnical Architecture DesignCodebase ManagementAutomated Testing StrategiesContinuous Improvement

Soft Skills

Problem-Solving SkillsStrong Communication Skills