At a Glance
- Tasks: Collaborate with developers to design and implement automated tests for core business functionality.
- Company: Award-winning tech company focused on accessibility in rail travel.
- Benefits: 25 days holiday, free flu jab, and a supportive work environment.
- Other info: Dynamic hybrid work model with opportunities for professional growth.
- Why this job: Join a mission-driven team making travel accessible for everyone while advancing your career.
- Qualifications: Strong experience in test automation frameworks, preferably Ruby/RSpec.
The predicted salary is between 63000 - 77000 £ per year.
B2B SaaS | Hybrid – 2-3 days office | UK Role overview
Accessible rail travel depends on systems that work reliably in live environments. Our Passenger Assistance platform turns passenger assistance requests into coordinated action inside live rail operations. We’re looking for a Senior Software Development Engineer in Test (SDET) to act as a true development partner, embedded within our feature teams rather than operating as a traditional QA resource. You’ll write code, collaborate closely with engineers, and ensure quality is built into features from the start through meaningful, business-aligned automated testing - not just test case execution or edge-case overengineering.
Strategic Context
Transreport exists to remove structural barriers in rail travel. Our vision is that everyone has access to travel everywhere. As a Series A technology company and recipient of a King’s Award, we operate across the UK, Japan and the EU, delivering award-winning accessibility and safety platforms that have supported over 10 million assistance requests for more than 1 million users. As our platform scales across markets and grows in complexity, we are hiring a Senior SDET to embed quality engineering into feature development and strengthen automated test coverage across our systems.
Within 6 months, you will:
- Establish strong collaboration patterns with backend and mobile engineers
- Improve automated test coverage across core business workflows
- Strengthen CI/CD integration for automated testing
- Introduce clearer quality standards within feature development
Within 12 months, you will:
- Act as the go-to quality engineering partner across multiple product areas
- Reduce regression issues through robust, business-focused automation
- Influence architectural decisions to improve system testability
- Help scale automated testing practices as the platform grows
Responsibilities
- Collaborate with developers during feature development to design and implement automated tests that validate core business functionality
- Own and improve unit and integration testing across services and platforms
- Build and maintain scalable automated test suites integrated into CI/CD pipelines
- Contribute to code reviews and architecture discussions to improve testability and quality
- Ensure testing focuses on real-world business scenarios rather than exhaustive edge cases
- Partner with Ruby backend and iOS/Android teams to maintain consistent quality standards
Technical Environment
- Backend: Ruby / RSpec
- Cross-functional collaboration with iOS and Android engineers
- Focus on automated testing (not manual QA)
Requirements
Must Haves:
- Strong experience with test automation frameworks and tools (preferably in Ruby / RSpec)
- Solid understanding of the SDLC in a coding-heavy environment
- Ability to write and review code as part of quality engineering
- Experience integrating automated tests into CI/CD pipelines
- Comfortable working closely with developers during feature development
- Ability to align automated testing with business requirements rather than focusing on manual QA
Nice to Haves:
- Experience working with mobile ecosystems (iOS / Android)
- Experience in Ruby-based backend environments
25 days holiday. Free flu jab for you and your family.
We value clarity over bureaucracy.
Interview Roadmap
- Screening Call (30 mins) – Recruiter alignment
- Technical Exercise – Automated testing approach & coding discussion
- Deep Dive Interview – Quality engineering, architecture, and collaboration with Engineering & Product
- Final Interview – Culture and leadership alignment
We aim to complete the process within 4 weeks. We’re a Disability Confident employer and we welcome applications from disabled candidates. If you need any adjustments at any stage of the recruitment process, please tell us what would help - we’ll work with you to make the process as accessible as possible. We also offer a Guaranteed Interview Scheme (GIS) for candidates who consider themselves to have a disability as defined under the Equality Act 2010. If you indicate this option in your application and your application demonstrates that you meet the essential criteria for the role, you’ll be invited to interview or assessment. Choosing GIS doesn’t guarantee a job offer. If you have any questions, please get in touch.
Senior Software Development Engineer in Test (SDET) - B2B SaaS | Hybrid employer: Transreport
Transreport is an exceptional employer, offering a dynamic work environment that champions innovation and accessibility in rail travel. With a hybrid working model, generous benefits including private healthcare and volunteering leave, and a culture that prioritises ownership and impact, employees are empowered to make meaningful contributions while enjoying a healthy work-life balance. The company’s commitment to employee growth and its status as a Disability Confident employer further enhance its appeal, making it a fantastic place for professionals seeking to drive change in the B2B SaaS landscape.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Development Engineer in Test (SDET) - B2B SaaS | Hybrid
✨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 Transreport 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 Transreport.
✨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 Transreport.
✨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 Transreport 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 Senior Software Development Engineer in Test (SDET) - B2B SaaS | Hybrid
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 Transreport.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Transreport 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 Transreport
✨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 Transreport 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.
