Partner closely with Principal Engineers, Architects and senior engineering leaders to establish a cohesive cross-platform strategy, identifying opportunities to share capabilities and architectural approaches while making pragmatic decisions about where platforms should remain distinct.

Champion technical excellence through modular, testable and maintainable software design, helping engineering teams adopt practices that improve quality, reliability, performance and long-term sustainability.

Evaluate emerging technologies and AI-enabled engineering practices, identifying where they create meaningful value for developers and customers while balancing innovation with security, operational cost and long-term sustainability.

Influence technical direction across the engineering organisation through clear communication, compelling technical proposals and trusted relationships with engineers, architects, product, design and executive stakeholders.

Mentor and develop senior engineers and members of the Principal Engineering community, while representing Trainline within the wider engineering community through knowledge sharing, technical leadership and community engagement.

We'd Love to Hear From You If You Have...

• Significant experience defining technical strategy for large-scale iOS platforms or products, with a track record of delivering architectural improvements that have created lasting impact across multiple teams or organisations.
• Deep expertise in modern iOS development, alongside strong experience designing modular, testable and maintainable software that balances scalability, reliability, performance and long-term maintainability.
• Experience establishing engineering standards, technical patterns and best practices, with the ability to influence their adoption across an organisation through technical credibility and collaboration.
• A proven ability to create alignment across engineering disciplines, working closely with architects, product, design and technology leaders to develop shared technical direction and deliver business outcomes.
• Strong judgement when evaluating emerging technologies, including AI-enabled engineering capabilities, with the ability to identify where they can create genuine value while balancing cost, risk and long-term sustainability.
• Excellent communication and influencing skills, with the ability to adapt your style to engage audiences ranging from hands-on engineers to senior and executive stakeholders.
• An active presence within the wider iOS engineering community through speaking, mentoring, open-source contributions or community engagement, although this is not essential.

More Information

• Enjoy fantastic perks like private healthcare & dental insurance, a generous work from abroad policy, 2-for-1 share purchase plans, an EV Scheme to further reduce carbon emissions, extra festive time off, and excellent family-friendly benefits.
• We prioritise career growth with clear career paths, transparent pay bands, personal learning budgets, and regular learning days. Jump on board and supercharge your career from day one!
• We're operating a hybrid model and ask that Trainliners work from the office a minimum of 60% of their time over a 12-week period. We also have a 28-day Work from Abroad policy.

Our Values

• 💭 Think Big - We're building the future of rail
• ✔️ Own It - We focus on every customer, partner and journey
• 🤝 Travel Together - We're one team
• ♻️ Do Good - We make a positive impact

We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity - gender, ethnicity, sexuality, disability, nationality and diversity of thought. That's why we're committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated.

Interested in finding out more about what it's like to work at Trainline? Why not check us out on LinkedIn, Instagram and Glassdoor!