Engineer .NET Backend

Salary: £65,000 - 105,000 per year

Requirements:

• We have hands-on experience with C# and .NET, including the latest features.
• We use Agile development practices.
• We have hands-on experience building high-volume transactional applications.
• We have experience with asynchronous services and processing.
• We test our solutions effectively.
• We enjoy mentoring less experienced engineers.
• We have experience with CI/CD.
• We thrive in a diverse, open, and collaborative environment.
• We have great communication skills.
• We are proactive, focused, supportive, honest, and team players.
• We have a passion for learning new skills.

Responsibilities:

• We deliver new functionality and features using the most appropriate tools and techniques.
• We ensure quality is at the heart of everything we and our team do.
• We continuously improve our code base.
• We keep our customer as the number one priority.
• We actively identify and remove blockers, boulders, time sinks, and waste.
• We make significant contributions to technical decisions.
• We act as coaches and mentors to others on the team.
• We take full ownership of the development lifecycle from code to production, including deployment and monitoring.

Technologies:

• Backend
• C#
• CI/CD
• Support
• LESS
• Mobile
• ASP.NET
• AWS
• Cloud
• DevOps
• Docker
• ELK
• GitHub
• REST

More:

We are Trainline, a FTSE 250 company and Europes number 1 downloaded rail app, helping millions of travellers find and book the best value tickets across carriers, fares, and journey options through our mobile app, website, and B2B partner channels. Our Backend teams build the core of our product, including journey search, eCommerce, carrier integrations, bookings, fulfilment, payments, refunds, real-time timetable information, and disruption handling. We work across London, Paris, Barcelona, Milan, Edinburgh, and Madrid, with over 1,000 Trainliners from 50+ nationalities. We offer fantastic perks including private healthcare and dental insurance, a generous work-from-abroad policy, share purchase plans, an EV scheme, extra festive time off, and family-friendly benefits. We support career growth through clear career paths, transparent pay bands, personal learning budgets, and regular learning days. We work in a hybrid model and ask Trainliners to work from the office a minimum of 60% of their time over a 12-week period, with a 28-day work-from-abroad policy. Our values are Think Big, Own It, Travel Together, and Do Good, and we are committed to building an inclusive workplace where everyone belongs and differences are valued and celebrated.

last updated 34 week of 2026