T
Trainline
Senior Backend Engineer
Skills
Google Cloud PlatformDynamoDBDockerC#.NETMicroservicesPostgreSQLAIAWSGitHubTerraformAzure
4 days ago
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Important information
Salary:
£85,000 – £95,000 / year
Location:
London, UK
Work mode:
Hybrid
Published on:
22 October 2026
What they need
Who you are
- Communicate clearly and enjoy working as part of a team, whether that’s pair-programming, mentoring or collaborating with front-end engineers and other disciplines
- Have strong hands-on C# and .NET experience, including recent features
- Have built and run microservices and event-driven systems, with a solid grasp of distributed systems and scale
- Are comfortable with AWS (Azure or GCP also valuable), Terraform and CI/CD pipelines
- Care about observability and keeping production reliable (New Relic, ELK or equivalents)
- Have worked with identity and authentication (OAuth2, OpenID Connect, IdentityServer)
- Are curious about AI and emerging tools
What the job involves
- Trainline’s Backend teams build the core of our product: the journey search that millions of customers use daily, the eCommerce platform behind every booking, and integrations with 270+ travel operators across 45 countries
- Each team owns a focused domain, from accounts and notifications to search, payments, carrier integrations and real-time timetables
- We’re hiring for our Insurance team, which builds the protection that sits alongside the booking, like Trainline Flex and Trip Cover, so customers can travel with confidence and be prepared when plans change
- Shape technical decisions and help the team make good ones
- Coach and mentor other engineers, and learn from them too
- Own your work from code through to production, including deployment and monitoring
- Spot and remove blockers, time sinks and waste, for yourself and the team
- Keep quality high and keep improving the codebase
- Our Tech Stack...🗝️
- C# (.NET 6 to 10), DynamoDB, PostgreSQL, AWS, Docker, Terraform, GitHub Actions, New Relic, ELK
Benefits
- Flexible working (60% min office attendance)
- Cycle to work scheme
- Discounted gym memberships through Wellhub
- Private Health and Dental Insurance
- Enhanced Pension (matched contributions)
- Income Protection
- Share Incentive Plan (buy one get one free)
- Learning budget
- Primary & Secondary Caregiver Leave
- Shared Parental Leave
- Enhanced sick pay
- Free Perkbox subscription
- Electric Vehicle Salary Sacrifice Scheme
- YellowNest - Subsidised Childcare Fees
- Work from Abroad
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