Senior .NET Engineer — Build Scalable Microservices

Trainline; London (KY); Hybrid; USD 93,000 - 146,000; Full time

Benefits offered by this job

Private healthcare

Dental insurance

Work from abroad policy

2-for-1 share purchases

EV scheme

Extra festive time off

Family-friendly benefits

Job summary

Trainline is hiring a Senior .NET Engineer to shape backend architecture, mentor engineers, and own features from code to production in a scalable platform environment.

Ideal candidates have strong C#/.NET skills, experience with microservices, AWS, and observability tools, and comfort with CI/CD pipelines. This role supports a hybrid work model from London with a focus on reliability and performance.

Qualifications

• Strong hands-on C# and .NET experience, including recent features.
• Built and run microservices and event-driven systems with distributed systems and scale.
• Familiar with AWS and CI/CD pipelines; Terraform and observability tooling.

Responsibilities

• 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.

Skills

C# / .NET

Team collaboration

Distributed systems

Observability

AI curiosity

Tools

AWS

Docker

Terraform

PostgreSQL

DynamoDB

GitHub Actions

New Relic

ELK

Job description

Trainline is hiring a Senior .NET Engineer to shape backend architecture, mentor engineers, and own features from code to production in a scalable platform environment.

Ideal candidates have strong C#/.NET skills, experience with microservices, AWS, and observability tools, and comfort with CI/CD pipelines. This role supports a hybrid work model from London with a focus on reliability and performance.