Senior Backend Engineer - .Net in City of Westminster

Senior Backend Engineer - .Net in City of Westminster

City of Westminster Full-Time 60000 - 80000 £ / year (est.) No working from home possible
The Trainline

At a Glance

  • Tasks: Deliver innovative features and improve code quality in a collaborative environment.
  • Company: Join Trainline, a forward-thinking tech company focused on customer satisfaction.
  • Benefits: Enjoy private healthcare, generous work-from-abroad policy, and clear career paths.
  • Other info: Diverse and inclusive workplace with excellent growth opportunities.
  • Why this job: Make a real impact with cutting-edge tech while mentoring others in your team.
  • Qualifications: Experience with C# .NET, cloud platforms, and mentoring junior engineers.

The predicted salary is between 60000 - 80000 £ per year.

Job Overview

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.

Responsibilities

  • 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.

Qualifications

  • 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. Identity Server, Open ID Connect, OAuth2).
  • Experience designing and maintaining CI/CD pipelines (Git Hub Actions, Team City, 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.
  • Excellent communication skills.
  • Tech Stack
  • Languages & Frameworks
  • Databases
  • Dynamo DB
  • Postgre SQL
  • Cloud & Infrastructure
  • AWS Cloud
  • Docker
  • Terraform
  • CI/CD & Dev Ops
  • Git Hub Actions
  • Monitoring & Logging
  • New Relic
  • ELK Stack

Benefits

  • Private healthcare & dental insurance
  • Generous work from abroad policy
  • 2‑for‑1 share purchase plans
  • EV scheme to reduce carbon emissions
  • Extra festive time off
  • Excellent family‑friendly benefits
  • Clear career paths, transparent pay bands, personal learning budgets and regular learning days
  • Diversity, Equity & Inclusion

We know that having a diverse team makes us better and helps us succeed.

We are committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated.

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The Trainline

Contact Details:

The Trainline Recruitment Team

We think you need these skills to ace Senior Backend Engineer - .Net in City of Westminster

C# .NET
Mentoring
Pair Programming
Identity and Authentication Systems
CI/CD Pipelines
Cloud Platforms (AWS, Azure, GCP)
Infrastructure as Code (Terraform)