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- Tasks: Develop backend features for millions of travellers using Ruby and modern engineering practices.
- Company: Join Trainline, Europe's leading travel platform focused on sustainability and innovation.
- Benefits: Enjoy private healthcare, generous leave, and clear career growth paths.
- Why this job: Make a real impact on travel while growing your skills in a supportive environment.
- Qualifications: Hands-on coding experience and knowledge of Ruby, RESTful APIs, and Git.
- Other info: Hybrid work model with opportunities for personal development and learning.
The predicted salary is between 30000 - 40000 £ 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 125 million monthly visits and £5.9 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.
Today, we’re a FTSE 250 company driven by our incredible team of over 1,000 Trainliners from 50+ nationalities, based across London, Paris, Barcelona, Milan, Edinburgh and Madrid. With our focus on growth in the UK and Europe, now is the perfect time to join us on this high-speed journey.
Join Trainline’s Backend Engineering Team
At Trainline, we’re building Europe’s leading travel platform, helping millions of people move seamlessly across borders every day. Our Backend teams are at the heart of this, powering journey search, fares, bookings, payments, and real-time travel updates for customers across 45 countries. We believe in collaboration, learning, and growth. Whether you’re early in your career or looking to take your next step as a developer, you’ll be joining a supportive environment where your ideas are valued and your skills can flourish.
About The Role
As a Junior Ruby Engineer, you’ll contribute to the systems that power millions of journeys across Europe. You’ll work alongside experienced engineers who will mentor and support your growth while helping you build confidence in modern backend engineering practices. This is a fantastic opportunity to develop your skills, learn at scale, and make meaningful contributions to a product used by millions.
As a Junior Ruby Engineer at Trainline, you will…
- Contribute to backend features that power search, booking, payments, and real-time travel updates for millions of travellers across Europe.
- Write clean, reliable, and well-tested Ruby code, following engineering best practices to ensure performance and maintainability.
- Take part in code reviews and technical discussions, learning from others while sharing your ideas and feedback.
- Build your understanding of modern engineering practices, including automated testing, CI/CD, monitoring, and deploying services at scale.
- Collaborate closely with Product and Design to turn customer needs into scalable, high-quality solutions.
- Take ownership of well-defined tasks, gradually growing your responsibility and impact as your confidence and skills develop.
We'd love to hear from you if you…
- Are excited to grow your career as a software engineer and motivated to continuously develop your skills.
- Enjoy solving problems and learning new technologies.
- Have hands-on coding experience (university, internships, or personal projects).
- Hold a degree in Computer Science or a related field, or equivalent practical experience.
- Have working knowledge of Ruby and object-oriented programming principles.
- Understand RESTful APIs and backend fundamentals.
- Have experience using Git for version control.
- Have basic knowledge of relational databases such as PostgreSQL.
- Have awareness of testing practices, CI/CD, Docker, or AWS is a plus, with a strong willingness to learn.
More information
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. Jump on board and supercharge your career from day one!
We operate a hybrid model to work 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.
Think Big - We’re building the future of rail
Own It - We focus on every customer, partner and journey
Travel Together - We’re one team
Do Good - We make a positive impact
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. That’s why we’re committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated.
Interested in finding out more about what it’s like to work at Trainline? Why not check us out on LinkedIn, Instagram and Glassdoor!
Junior Engineer - Ruby (London) employer: Trainline
Contact Detail:
Trainline Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Junior Engineer - Ruby (London)
✨Tip Number 1
Network like a pro! Reach out to current or former Trainliners on LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.
✨Tip Number 2
Prepare for the technical interview by brushing up on Ruby and backend fundamentals. Practice coding challenges on platforms like LeetCode or HackerRank to sharpen your skills and get comfortable with problem-solving.
✨Tip Number 3
Show your passion for travel and sustainability during interviews. Share your thoughts on how technology can improve the travel experience and make it more eco-friendly. It’ll show you’re aligned with Trainline’s mission!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Trainline team.
We think you need these skills to ace Junior Engineer - Ruby (London)
Some tips for your application 🫡
Show Your Passion for Coding: When you're writing your application, let us see your enthusiasm for coding and problem-solving. Share any personal projects or experiences that highlight your love for Ruby and backend development.
Tailor Your Application: Make sure to customise your application to reflect the role of Junior Ruby Engineer. Highlight relevant skills like your understanding of RESTful APIs and any experience with Git or databases. We want to see how you fit into our team!
Be Clear and Concise: Keep your application straightforward and to the point. Use clear language and structure your thoughts well. This helps us understand your background and skills quickly, making it easier for us to see your potential.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen on joining our team!
How to prepare for a job interview at Trainline
✨Know Your Ruby Basics
Make sure you brush up on your Ruby skills before the interview. Be ready to discuss object-oriented programming principles and demonstrate your understanding of RESTful APIs. Practising coding challenges in Ruby can also help you feel more confident.
✨Show Your Problem-Solving Skills
Trainline values problem solvers, so be prepared to share examples of how you've tackled challenges in your previous projects or studies. Think about specific situations where you had to learn new technologies or overcome obstacles, and explain your thought process.
✨Familiarise Yourself with CI/CD and Testing
Even if you’re not an expert, having a basic understanding of continuous integration/continuous deployment (CI/CD) and testing practices will impress your interviewers. Mention any experience you have with automated testing or tools like Docker and AWS, and express your eagerness to learn more.
✨Emphasise Collaboration and Learning
Since Trainline promotes a collaborative environment, highlight your teamwork experiences. Share how you've worked with others to achieve a common goal, and express your enthusiasm for learning from experienced engineers. This shows you're a great fit for their supportive culture.