Senior Android Engineer (Contract, Outside IR35)

Contracting often means being dropped into a clients team as the outsider.

Here youll join a hedgehog lab team delivering a UK banks Android app as it moves to Jetpack Compose.

Its a contract outside IR35 expected to start in January 2027 and run for around 6 months. Youll work on a remote first basis.

Whats in it for you

Youll be part of a consultancy team that owns the delivery working with people who care about testing code reviews and code quality.

Youll build new UI in Compose from the start on a codebase thats actively modernising.

Youll add regulated banking work to your CV which carries weight on future contracts.

Who youll be doing it for

hedgehog lab is a digital product consultancy with 20 years of experience helping public and private sector organisations through digital transformation. Were B Corp and Great Place to Work certified.

Youll be part of a hedgehog lab delivery team working on our clients customer-facing Android app. Our client is a well-known UK bank.

What youll be doing

- Building new features and screens in Jetpack Compose

- Maintaining XML and Data Binding screens and migrating them to Compose

- Working in Kotlin with some legacy Java within an MVVM architecture using Hilt and Dagger

- Consuming REST APIs and maintaining third-party SDKs

- Writing unit tests with JUnit and MockK so changes and refactors stay safe

- Debugging on emulators and real devices including performance issues

- Reviewing pull requests and taking part in sprint planning stand-ups and retros

Experience you must have

- Commercial Android experience in Kotlin including Coroutines and Flow

- Jetpack Compose plus XML layouts Data Binding and enough Java to work on older code

- MVVM and dependency injection with Hilt and Dagger

- Unit testing with JUnit and MockK and using tests to make safe changes in large codebases

- Mobile security particularly protecting sensitive data and securing network calls

Experience thats nice to have

- Banking fintech or other regulated apps

- SAFe or another scaled agile framework

- Migrating XML screens to Compose

- UI testing with Espresso or Compose

- Certificate pinning code obfuscation and root detection

- Accessibility experience

How to apply

If this sounds like you apply below and well be in touch.