JobCubby JobCubby
Sign up
hedgehog lab

Senior Android Engineer (Contract, Outside IR35)

hedgehog lab Leeds, England, United Kingdom

Business Consulting and Services · 51-200 employees

17 h ago
android Senior (5-10 yrs) Contractor United Kingdom
Create a free account to apply — email only, no card. You can also save this posting or score it against your profile with AI.

Applying here? Try the free cover letter tool — paste this posting and your résumé, no account needed.

About the role

You will build new features and screens using Jetpack Compose while maintaining existing XML and Data Binding components. You will work within an MVVM architecture to consume REST APIs and ensure code quality through unit testing and debugging.

What they look for

Android Development Kotlin Jetpack Compose Java MVVM Hilt Dagger Coroutines Flow Unit Testing JUnit MockK REST APIs Mobile Security XML Data Binding

Requirements

The role requires commercial Android development experience with Kotlin, Coroutines, and Flow, alongside proficiency in Jetpack Compose and dependency injection frameworks like Hilt or Dagger. Candidates should have a strong understanding of MVVM, SOLID principles, and experience working with REST APIs and mobile security practices.

Benefits

Remote first B Corp certified Great Place to Work certified

Full description

Come and join the hedgehog lab team for a six-month contract on a well-known UK bank's Android app, building all new UI in Jetpack Compose from day one.

The contract

Six-month contract, starting 4th January 2027.

Outside IR35.

Remote first, with some time on site.

Why you'll want this

A lot of Android contracts drop you into a client team on your own, picking up their ways of working while you try to deliver.

On this one you'll join a hedgehog lab team, working on a banking app customers use every day.

What's in it for you

You'll get to do a Compose migration properly, moving older XML screens across in small, tested steps.

You’ll be one of three Android engineers in the team, working alongside iOS engineers and QAs.

You'll have room to do the work properly and fix problems at the source.

With a 4th January start, you can line up your next contract before Christmas.

Who you'll be doing it for

hedgehog lab is a digital product consultancy with 20 years of experience. We're B Corp and Great Place to Work certified, with around 100 people working remote first across the UK.

This engagement is with a well-known UK bank, on its customer-facing Android app. Our team will be three iOS engineers, three Android engineers and two QAs.

What you'll be doing

Building new features and screens in Compose.

Maintaining existing XML and Data Binding screens, and moving them to Compose over time.

Working in Kotlin and some Java, within an MVVM architecture using Hilt and Dagger.

Consuming REST APIs and maintaining third-party SDKs.

Writing unit tests with JUnit and MockK to support safe refactoring.

Debugging on emulators and real devices, including memory, performance and network issues.

Reviewing code and working closely with the bank's own mobile engineers.

What you'll need

Commercial Android experience with Kotlin, Coroutines and Flow, plus enough Java to maintain older code.

Jetpack Compose experience, alongside XML layouts and Data Binding.

A good understanding of MVVM, SOLID principles and dependency injection with Hilt or Dagger.

Unit testing with JUnit and MockK, including asynchronous code.

Experience making incremental changes in a large, established codebase.

Experience with REST APIs and third-party SDKs.

Practical mobile security awareness, especially protecting sensitive data and communicating securely with services.

It would help if you've migrated XML screens to Compose, written Espresso or Compose UI tests, or worked on banking, fintech or other regulated apps.

Next steps

If this sounds like your next contract, apply and I'll be in touch to arrange a call.

Similar roles