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UK remote

Senior Platform Engineer

LondonPosted 6 Oct 2026

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About this role

About us At Trainline, our purpose is to empower greener travel choices, connecting people and places. https://www.thetrainline.com/terms/sustainability-faqs Trainline enables millions of travellers to find and book the best value tickets across carriers, fares, and journey options through our highly rated mobile app, website, and B2B partner channels. Great journeys start with Trainline 🚄 We’re Europe’s leading independent rail platform, helping millions of travellers find and book the best-value rail and coach journeys across our app, website and partner channels.

Our job is to make the green travel choice the best choice. By building a better train travel experience, we help more people choose rail - creating a positive impact for customers, our business and the planet. We’re a team of more than 1,000 Trainliners from over 50 nationalities, working across London, Paris, Barcelona, Milan, Edinburgh and Madrid. Now is a brilliant time to join us and help shape the future of travel.

Introducing the Trainline Infrastructure Engineering and Tooling Team 👋 The Infrastructure Engineering and Tooling team, also known as Atlas, owns the ecosystem we use to deploy, run and manage services across the Trainline platform. Our work helps engineering teams across the business ship changes safely and confidently, so millions of travellers can rely on Trainline every day. You'll join a collaborative team of software and platform engineers at all levels of experience.

We work across Terraform, AWS, Node.js, C# and Python, and we don't expect you to know it all from day one. You'll work closely with engineers, Tech Leads, Engineering Managers, a Senior Principal Engineer and the Head of Engineering to improve our platform, shape delivery and deliver meaningful infrastructure change. In this role as the Senior Platform Engineer, you will...🚄 - Deliver complex improvements to Trainline's engineering platforms, building scalable, reliable and secure infrastructure that supports teams across the business.

- Implement and evolve infrastructure with Terraform, following existing module patterns while spotting opportunities to improve quality, maintainability and automation. - Apply least-privilege and secure-by-default principles consistently across our AWS accounts, ensuring our infrastructure meets Trainline's standards for security and operational excellence. - Build and improve automation, services and tooling in Node.js or Python to make delivery faster, safer and more repeatable.

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- Support and review the work of other engineers, sharing context and giving constructive feedback so they can deliver with confidence. - Work with Tech Leads, Delivery Managers and cross-functional stakeholders to shape delivery plans, meet milestones and manage dependencies. - Raise risks, blockers and quality concerns early, helping to remove obstacles for the team and keep delivery moving at a sustainable pace. - Test, validate and deploy infrastructure changes through CI/CD (continuous integration and continuous delivery) pipelines, making sure everything is robust, well documented and ready for production.

We'd love to hear from you if you have...🔍 - Substantial professional experience as a software engineer, writing code in Python, Node.js, C# or a similar programming language. - A solid knowledge of software engineering best practice, with a focus on writing clean, maintainable and testable code. - Hands-on experience with AWS services such as ECS, Lambda, CloudFront, IAM and S3, applying operational and security best practice.

- A history of delivering infrastructure with Terraform or another infrastructure as code tool. - A confident understanding of DevOps practices and CI/CD, for example using GitHub Actions. - Experience using AI tooling in your day-to-day work, for example for coding, code review, research and productivity. - Experience of delivering results in agile, delivery-focused teams, and ideally of supporting colleagues through reviews and feedback.

- A curious mindset and the ability to pick up new technologies quickly and apply them effectively. 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 represent the things that matter most to us and what we live and breathe everyday, in everything we do: - 💭 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 https://www.linkedin.com/company/trainline/, Instagram https://www.instagram.com/lifeattrainline/ and Glassdoor https://www.glassdoor.co.uk/Overview/Working-at-Trainline-EI_IE249203.11,20.htm!

Source listing: ashby_trainline

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