Senior Android Engineer

Company: Trainline
Apply for the Senior Android Engineer
Location: London
Job Description:

Senior Android Engineer – Responsibilities

  • Design, build and improve high‑quality Android features that help customers plan, book and manage their travel with confidence.
  • Work as part of a cross‑functional product team, contributing to technical decisions from discovery and design through to delivery and iteration.
  • Identify and execute improvements that enhance app performance, reliability, developer experience and delivery speed.
  • Partner closely with Product, Backend, Web and iOS colleagues to shape roadmaps, solve customer problems and deliver joined‑up experiences across platforms.
  • Use modern Android technologies and engineering practices, including Kotlin, Coroutines, Jetpack Compose, Dagger, continuous integration and clean architecture principles.
  • Champion quality, maintainability and thoughtful technical design, helping the team make pragmatic decisions that support long‑term product growth.
  • Contribute to an agile engineering culture through collaboration, pair programming, continuous delivery and shared ownership of outcomes.
  • Provide technical leadership within the Android space, helping to move initiatives forward and supporting strong engineering standards across the team.
  • Mentor and support other engineers, sharing knowledge and creating an environment where people can learn, contribute and grow.

Qualifications

  • Strong Android development experience, with good working knowledge of Kotlin and modern Android technologies.
  • A solid understanding of design patterns, SOLID principles, clean code practices and continuous integration or continuous delivery.
  • Experience building customer‑facing mobile products where user experience, quality and performance are central to decision making.
  • Confidence working with Git and collaborating with others through modern software development workflows.
  • A collaborative approach to working in cross‑functional teams, with the ability to communicate clearly with Product, Backend, Web, iOS and other engineering colleagues.
  • A proactive mindset, with the ability to take initiative, bring people together and help move work forward in a thoughtful and inclusive way.
  • An interest in mentoring others, sharing technical knowledge and supporting the growth of engineers around you.
  • Helpful experience working across platforms or with backend technologies, although this is not essential.

Benefits

  • Private healthcare and dental insurance.
  • A generous work‑from‑abroad policy and hybrid model with a minimum of 60% office presence over a 12‑week period.
  • 2‑for‑1 share purchase plans.
  • An EV Scheme to further reduce carbon emissions.
  • Extra festive time off and excellent family‑friendly benefits.
  • Career growth opportunities with clear career paths, transparent pay bands, personal learning budgets and regular learning days.

Commitment to Diversity and Inclusion

We know that having a diverse team makes us better and helps us succeed. We are committed to creating inclusive places to work where everyone belongs and differences are valued and celebrated.

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Posted: June 6th, 2026