Android Developer
Senior Android Engineer – Mobile Security
Location: London (Hybrid)
Type: Contract
We’re hiring a Senior Android Engineer to join a high-performing mobile engineering team within a major UK financial services organisation.
This team sits at the heart of mobile security, building and maintaining a suite of cutting-edge security components that protect millions of users. You’ll play a key role in shaping secure mobile experiences across a large-scale, multi-brand environment.
About the Role
You’ll work on designing and developing secure, scalable Android components and services used across multiple mobile applications. This is a highly collaborative role, working closely with engineering, architecture, and strategy teams to deliver robust security solutions in an evolving threat landscape.
What You’ll Be Doing
- Design, build, and maintain secure Android components and libraries
- Contribute to mobile security architecture and best practices
- Collaborate with cross-functional teams to deliver scalable, reusable solutions
- Support performance optimisation, testing, and continuous improvement
- Help shape the future of mobile security within a large-scale platform
What We’re Looking For
- Strong experience with Kotlin and/or Java for Android development
- Deep understanding of the Android SDK, UI principles, and best practices
- Experience with:
- Offline storage, threading, and performance tuning
- Android architecture patterns (MVVM / MVI)
- Android Architecture Components and Jetpack libraries
- Jetpack Compose
- Familiarity with modularised codebases
- Strong knowledge of version control tools (e.g. Git)
- Experience with UI testing
Nice to Have
- Experience working on security-focused mobile applications
- Exposure to mobile app security practices (e.g. obfuscation, penetration testing support)
- Experience working in large-scale or regulated environments
What’s on Offer
- Competitive salary
- Hybrid working (London-based)
- Opportunity to work on high-impact mobile platforms used by millions
- Collaborative, forward-thinking engineering environment