# Senior Backend Engineer - .Net at Trainline > Hybrid · United Kingdom · Senior · Backend · open. Source: https://alderhq.app/jobs/ashby%3Atrainline%3Af1a75db9-5df2-4c51-91c1-17f7ed85c4cd (read 2026-11-06). ## Facts (observed) - Company: [Trainline](https://alderhq.app/companies/trainline) - Location text: London - Where it can be done from (inferred): Hybrid · United Kingdom (evidence: "Location: London") - Posted: 2026-06-30 (129 days ago) - First seen by alder: 2026-11-02 · last verified: 2026-11-04 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://jobs.ashbyhq.com/trainline/f1a75db9-5df2-4c51-91c1-17f7ed85c4cd - Skills listed (inferred): C#/.NET, PostgreSQL, AWS, GCP, Azure, Docker, Terraform, Distributed systems ## Pay and sponsorship - Posted pay: £85k–£95k per year (from the listing's pay field) - Market band for similar posted roles (London, n 13): p25 £90k, median £104k, p75 £115k ## Description (the employer's text) ### About us At Trainline, our purpose is to empower greener travel choices, connecting people and places. 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 Backend teams at Trainline👋 The Backend teams at Trainline build the core of Trainline’s world class product. We create the journey search functionality that millions of our customers use on a daily basis, the eCommerce platform that provides a secure and seamless experience and we connect Trainline to over 270 travel operating companies, across 45 countries in Europe and the rest of the world. Each team has a targeted domain focus, ranging between journey search, fares calculation, bookings, fulfilment, payments, refunds, carriers’ integrations, real-time timetable information, journey disruptions and much more. ### As a senior level .NET Engineer at Trainline you will...🚄 Deliver new functionality or features, using the most appropriate tools & techniques Ensure quality is at the heart of everything you and your team do Continuously improve the code base Keep our customer as the number one priority Actively identify blockers, boulders, time sinks and waste, and actively attempt to remove them Make significant contribution to technical decisions Act as a coach and mentor to others in the team Take full ownership of the development lifecycle from code to production, including deployment and monitoring ### Our Tech Stack 🔑 Languages & Frameworks: C# (.NET 6–10) Databases: DynamoDB, PostgreSQL Cloud & Infrastructure: AWS Cloud, Docker, Terraform CI/CD & DevOps: GitHub Actions Monitoring & Logging: New Relic, ELK Stack ### We'd love to hear from you if you have...🔍 Experience mentoring less experienced engineers and comfortable pair-programming with colleagues Hands on experience with C# .NET and the latest features Experience collaborating with front-end engineers and other disciplines to deliver end-to-end features and cross-functional epics Experience working with identity and authentication systems (e.g. IdentityServer, OpenID Connect, OAuth2) Experience designing and maintaining CI/CD pipelines (e.g. GitHub Actions, TeamCity, Spacelift or similar tools) Experience with cloud platforms (AWS preferred; Azure or GCP also valuable) Hands-on experience with Infrastructure as Code, particularly Terraform Strong experience with observability practices (logging, monitoring, alerting) Familiarity with tools such as New Relic and ELK stack (or equivalents) Curiosity about AI and emerging tools Experience supporting production systems and improving reliability Strong experience building and operating microservices architectures Experience with event-driven systems and asynchronous messaging patterns Solid understanding of distributed systems and scalability challenges Have excellent communication skills ### 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. --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/ashby%3Atrainline%3Af1a75db9-5df2-4c51-91c1-17f7ed85c4cd and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.