Senior Android Engineer (Contract, Outside IR35)

Contracting often means being dropped into a client's team as the outsider.

Here you'll join a hedgehog lab team delivering a UK bank's Android app as it moves to Jetpack Compose.

It's a contract outside IR35, expected to start in January 2027 and run for around 6 months. You'll work on a remote first basis.

What's in it for you

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

You'll build new UI in Compose from the start, on a codebase that's actively modernising.

You'll add regulated banking work to your CV, which carries weight on future contracts.

Who you'll 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. We're B Corp and Great Place to Work certified.

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

What you'll 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 that's 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 we'll be in touch.