At a Glance
- Tasks: Shape cloud-native engineering standards and modernise services for millions of journeys.
- Company: Join Trainline, Europe's number 1 downloaded rail app, committed to sustainable travel.
- Benefits: Enjoy private healthcare, generous work-from-abroad policy, and excellent career growth opportunities.
- Other info: Collaborative environment focused on diversity and continuous improvement.
- Why this job: Make a real impact on the future of travel while working with cutting-edge technology.
- Qualifications: Strong C# and .NET experience, with a passion for cloud-native applications and AI tools.
The predicted salary is between 85000 - 95000 £ per year.
About us
We are champions of rail, inspired to build a greener, more sustainable future of travel. 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. Now Europe’s number 1 downloaded rail app, with over 135 million monthly visits and 6.3 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. We want to create a world where travel is as simple, seamless, eco-friendly and affordable as it should be.
Introducing the Trainline Cloud Native Developer Experience Team
At Trainline, we're evolving the platform that powers millions of journeys across Europe. .NET services are built, deployed and operated, helping teams deliver faster while improving reliability and reducing operational complexity.
As a Senior C# Engineer, you'll play a key role in shaping our cloud-native engineering standards. Working closely with Platform Engineering, Infrastructure, Security and product development teams, you'll modernise existing services, build reusable patterns and develop automation that accelerates engineering across the organisation. Success in this role is measured not only by modernising services, but by raising engineering capability across Trainline through reusable tooling, technical leadership, collaboration and the adoption of cloud-native engineering practices and by the ability to collaborate across the organisation.
In this role as the Senior C# Engineer, you will:
- Containerise applications for Amazon ECS, removing legacy infrastructure dependencies and optimising services for cloud-native operation.
- Create reusable service templates, engineering standards and best practices covering dependency injection, configuration, logging, monitoring and deployment.
- Develop automation and AI-assisted tooling that accelerates cloud migration by analysing existing services, identifying modernisation opportunities and generating infrastructure and deployment scaffolding.
- Optimise containerised workloads to improve performance, resource utilisation and scalability, helping teams deliver efficient, cost-effective services at scale.
- Partner with engineering teams across Trainline to drive adoption of cloud-native engineering practices, influence technical direction and build consensus around modernisation approaches that enable successful service migrations.
- Contribute to the continuous improvement of CI/CD pipelines and deployment processes, enabling faster, safer and more consistent software delivery.
- Champion cloud-native engineering through technical leadership, documentation, design reviews, demos, mentoring and engineering community engagement, helping teams adopt consistent engineering practices with confidence.
Core skills:
- Strong professional experience developing applications with C# and .NET, alongside a solid understanding of software engineering principles and modern backend architecture.
- A good understanding of distributed systems, including resilience patterns, observability, scalability and performance optimisation.
- Experience developing and maintaining Infrastructure as Code using Terraform (or equivalent), alongside a strong understanding of CI/CD pipelines and modern software delivery practices.
- Experience building and operating cloud-native applications using containers and orchestration technologies within AWS and Amazon ECS.
- Experience using AI-assisted engineering tools to improve productivity, quality and software delivery, while applying sound judgement to validate outputs.
- Strong communication and collaboration skills, with the ability to explain technical concepts to diverse audiences, build trusted relationships and help drive organisational adoption of engineering standards and best practices.
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. 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.
We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity - gender, ethnicity, sexuality, disability, nationality and diversity of thought.
Compensation Range: 85K - 95K
Location: London
Employment Type: Full time
Department: Technology Development
Engineering - Senior Backend Engineer in London employer: Trainline
At Trainline, we pride ourselves on being an exceptional employer, offering a vibrant work culture that champions collaboration and continuous improvement. Our commitment to employee growth is evident through clear career paths, personal learning budgets, and generous benefits like private healthcare and a flexible work-from-abroad policy. Join us in Edinburgh, where you can make a meaningful impact on customer experiences while enjoying a supportive environment that values your contributions.
StudySmarter Expert Advice🤫
We think this is how you could land Engineering - Senior Backend Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Trainline or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Trainline.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Trainline.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Trainline that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Engineering - Senior Backend Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Trainline.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Trainline and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Trainline
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Trainline uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
