Senior Android Engineer

Trainline

Senior Android Engineer developing high-quality features for Trainline's mobile app. Collaborating with cross-functional teams to enhance customer travel experiences in hybrid work setting.

Posted 6/3/2026full-timeLondon • 🇬🇧 United KingdomSenior💰 £80,000 - £90,000 per yearWebsite

Tech Stack

Tools & technologies

AndroidiOSKotlin

About the role

Key responsibilities & impact

Design, build and improve high-quality Android features
Work with cross-functional product team on technical decisions
Identify and execute improvements for app performance and delivery speed
Collaborate with Product, Backend, Web and iOS teams
Use modern Android technologies and clean architecture principles
Champion quality, maintainability, and technical design decisions
Contribute to agile engineering culture
Provide technical leadership within Android space
Mentor and support other engineers

Requirements

What you’ll need

Strong Android development experience
Good working knowledge of Kotlin and modern Android technologies
Solid understanding of design patterns, SOLID principles, and clean code practices
Experience building customer-facing mobile products
Confidence working with Git and modern software development workflows
Collaborative approach in cross-functional teams
Proactive mindset with initiative
Interest in mentoring others

Benefits

Comp & perks

Private healthcare & dental insurance
Generous work from abroad policy
2-for-1 share purchase plans
EV Scheme to reduce carbon emissions
Extra festive time off
Excellent family-friendly benefits
Career growth with clear paths
Transparent pay bands
Personal learning budgets
Regular learning days

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Android developmentKotlindesign patternsSOLID principlesclean code practicesmobile product developmentapp performance optimizationdelivery speed improvementtechnical designagile engineering

Soft Skills

collaborationproactive mindsetmentoringtechnical leadershipinitiativecross-functional teamworkcommunicationsupporting engineersquality assurancemaintainability