Senior Android Engineer - Remote UK/Europe
3 month contract initially, Outside IR35
We're hiring a Senior Android Engineer to build features that protect users and enable safer, more respectful digital experiences. You'll design and deliver Android features focused on user safety, working closely with cross-functional teams in a fast-moving, high-impact environment.
What You'll Do

• Build and maintain high-quality Android features (Kotlin; Java a plus)

• Own work end-to-end - from concept through release and iteration

• Turn complex or sensitive requirements into clear, scalable solutions

• Collaborate with product, backend, design, and data teams

• Identify risks, edge cases, and abuse vectors in safety-critical flows

• Improve code quality, performance, and accessibility across the app

• Contribute to best practices through reviews and mentorship
What We're Looking For

• Experience shipping Android applications in production

• Strong ownership mindset with the ability to lead independently

• Comfortable working in ambiguous, high-stakes environments

• Focus on privacy, safety, and inclusive user experiences

• Strong communication and teamwork skills
Bonus

• Experience working with backend systems (APIs, cloud platforms, Golang)

• Background collaborating on API design and evolution

• Interest in mentoring and raising Android engineering standards

 

Senior iOS Engineer - UK/Europe remote
3 months contract initially, Outside IR35 
We're hiring a Senior iOS Engineer to build features that protect users and create safer, more respectful digital experiences.
You'll design and deliver iOS features focused on user safety, working across product, backend, and design teams in a high-impact, evolving space.
What You'll Do

• Build and maintain high-quality iOS features (Swift, UIKit/SwiftUI)

• Own work end-to-end - from concept to launch and iteration

• Turn complex or sensitive requirements into clear technical solutions

• Collaborate cross-functionally with product, data, and backend teams

• Identify risks, edge cases, and improve safety-critical user flows

• Drive best practices in code quality, performance, and accessibility
What We're Looking For

• Proven experience shipping iOS applications

• Strong ownership mindset with the ability to lead independently

• Comfortable working in ambiguous, high-stakes environments

• Focus on privacy, safety, and inclusive user experiences

• Strong communication and collaboration skills
Bonus

• Experience in Trust & Safety, moderation, or abuse prevention

• Exposure to backend systems (e.g. APIs, cloud platforms, Golang)

 

Senior Android Engineer Contract - Outside IR35
Hybrid role in London (ideally 2/3 days on site), 6 months initial engagement
We're partnered with a fast-growing, product-led fintech business and they are looking to find Senior Android Engineers to join their mobile team.
You'll collaborate with experienced engineers to deliver high-quality features, shape architecture, and scale a modern Android platform used by thousands daily.
What you'll be doing:

• Build and enhance features in a consumer-facing Android app

• Work closely with product, design, backend, and QA

• Drive performance, scalability, and code quality

• Address technical debt and influence architecture

• Contribute to testing, reviews, and releases
Tech stack:

• Kotlin

• Jetpack Compose

• MVVM (with exposure to MVI)

• Coroutines (async handling)

• GraphQL (Apollo)

• Modular architecture
What they're looking for:

• Strong commercial experience with Kotlin

• Experience with Jetpack Compose and modern Android tooling

• Solid understanding of mobile architecture patterns

• Background building high-traffic consumer apps

• Comfortable working autonomously and making technical decisions

• Experience with Git & CI/CD (e.g. CircleCI)