Trainline
Engineer - Platform
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About us
At Trainline, we are champions of rail, inspired to build a greener, more sustainable future of travel. We enable 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.
Join the movement for change.
Great journeys start with Trainline 🚄
As Europe’s number 1 downloaded rail app, with over 135 million monthly visits and £6.3 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. Our team of over 1,000 Trainliners, from 50+ nationalities, is based in London, Paris, Barcelona, Milan, Edinburgh and Madrid.
A FTSE 250 company, we are driven by growth in the UK and Europe, and offer the perfect opportunity to join us on this high-speed journey.
Introducing Atlas at Trainline
The Infrastructure Engineering and Tooling Team (aka Atlas) owns the ecosystem that powers Trainline’s platform, including deployment, execution, traffic management, and monitoring.
The team is currently building the next version of Trainline’s infrastructure platform, with a strong focus on:
- Reliability & quality
- Automation & efficiency
- Secure & scalable delivery
A collaborative team of software engineers, DevOps engineers, and platform engineers with varying experience levels works across technologies including Terraform, AWS, Node.js, C#, and Python. This role allows you to grow alongside a dynamic, cross-functional set of colleagues.
As a Platform Engineer, you’ll:
Responsibilities
- Deliver improvements to Trainline’s engineering platforms by contributing to infrastructure that simplifies deployment, improves reliability, and reduces operational risk.
- Write Terraform-based infrastructure while aligning with existing patterns to ensure clear, consistent, maintainable, and reusable models.
- Apply least-privilege and secure-by-default principles across AWS accounts, ensuring our platform environment remains secure and efficient.
- Automate workflows using Node.js, Python, or other scripting capabilities, supporting efficient, repeatable delivery and reducing manual effort.
- Collaborate closely with Senior Platform Engineers, Tech Leads, and Delivery Managers to:
- Understand priorities
- Clarify requirements
- Deliver agreed milestones effectively.
- Test, validate, and deploy changes rigorously through our CI/CD pipelines, ensuring work is thoroughly reviewed before reaching production.
- Maintain transparent delivery updates, proactively raise blockers, and seek support as needed to keep the team aligned and moving forward smoothly.
- Continuously improve your knowledge of Trainline’s platform and engineering practices, while leveraging feedback and teamwork to drive quality improvement.
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Requirements
We'd love to hear from you if you have the following skills and experiences:
Key Responsibilities and Requirements
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Good experience with AWS services, including:
- ECS
- Lambda
- IAM
- CloudFront
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Experience with deployment, testing, and maintenance of Terraform modules, and a willingness to implement and improve Readable, reusable, and reliable infrastructure code.
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Ability to deliver tasks independently and successfully, while knowing when to seek guidance, collaborate, or escalate risks.
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Python or Node.js experience for automation, scripting, or integration tasks, or strong experience with alternative programming languages.
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Commitment to secure engineering best practices, including:
- Least-privilege and secure-by-default infrastructure -AWS multi-account strategies -Security frameworks like CDN, WAF, or OIDC-based authentication.
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- Experience using AI tools for productivity, coding, documentation, or reviewing improvements.
- Showcase a highly collaborative style, fitting in well within agile delivery-focused teams.
Benefits
At Trainline, we value a purposeful work culture and offer compelling incentives:
✅ Flexible work: We operate a hybrid model, asking all Teameliners to work in the office for minimum 60% of working time across a 12-week period. We also provide a 28-day ‘Work from Abroad’ policy.
✅ Life-changing perks like:
Private healthcare & dental insurance Generous work-from-abroad policy 2-for-1 share purchase plans EV Scheme for further carbon emissions reduction Extended festive time off Excellent family-friendly benefits
✅ Career growth:
- Clear career paths and transparent pay bands
- Personal learning budget
- Regular learning days to develop new skills.
Our Values
Our values represent what matters most to us:
- 💭 Think Big – We’re shaping the future of rail travel.
- ✔️ Own It – We focus on service excellence for every customer, partner, and journey.
- 🤝 Travel Together – We value every Teameliner as part of a shared, engaged community.
- ♻️ Do Good – We manage carbon footprints and make a positive social impact.
Inclusion & Diversity
We foster an inclusive workplace where difference is celebrated, and all forms of diversity—gender, ethnicity, sexuality, disability, nationality, and thought diversity—are valued and amplify our success.
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