Backend TypeScript Developer Team PSS
Confirmed on the employer's own hiring board on Oct 23, 2026. First seen by Alion on Oct 23, 2026. Nederlandse Spoorwegen scores B on the Alion truth index.
Why you want to work as a Backend Developer at NS
- You’ll have the unique opportunity to build a backend that serves millions of passengers every day.
- You’ll join a forward-thinking DevOps team where you have the freedom to contribute ideas and experiment with new technologies.
- Our teams have end-to-end responsibility for the entire process: from discovery, user research and design to development and continuous improvement. As teams, we also run and host our own backends: “You build it, you run it, you love it.”
What you’ll do as a Backend Developer at NS
As a Backend Developer, you’ll be responsible for developing and maintaining the systems that support the NS app. You’ll build scalable and reliable services that meet the highest quality standards.
Your main focus will be on functionality that supports our service strategy and contributes to increasing self-service and reducing the need for customer contact. At NS, our goal is to offer services as proactively as possible: relevant to passengers and available at exactly the moment they need them.
- You develop and maintain backend services in TypeScript, deployed on AWS.
- You work closely with the Business Analyst, Product Owner and other developers to translate functional and business requirements into technical solutions.
- You write structured, clean code, address technical debt and resolve security vulnerabilities where necessary.
- You improve the quality, reliability and robustness of our backend by working test-driven and understanding how monitoring tools such as Datadog can be used effectively.
- You stay up to date with the latest developments in backend technologies and share your knowledge with both the team and the wider developer community.
Hier ga je werken
You’ll work from our head office near Utrecht Central Station as well as from home, as part of a multidisciplinary DevOps team. You’ll work alongside another Backend Developer, an iOS Developer and an Android Developer. The team also includes a UX/UI Designer, Scrum Master and Product Owner.
Within the Service domain, there is extensive collaboration with other teams, for example teams that maintain services for the Forgotten Check-out process and teams working on the JeNS chatbot.
Together, we brainstorm innovative solutions, collaborate closely and explore new possibilities both within and beyond our own areas of expertise. And, of course, you’ll spend plenty of time doing what you enjoy most: developing. We support you with the latest technologies.
Our team is one of seven teams jointly responsible for components of the NS app. Backend Developers meet every week to present their work and discuss improvements that benefit multiple teams. These meetings give you the opportunity to make an impact and help shape our technical direction.
Our developer culture values everyone’s input. Nothing is “set in stone.”
The codebase
Our backend currently consists of serverless applications deployed on AWS. We are actively working towards stateless front-end applications by using a BFF (Backend for Frontend) architecture.
There is also a strong demand for an app that can adapt to passengers as they travel. To achieve this, we use applications outside our own team for content and personalisation. A versatile backend is therefore essential to providing excellent service.
There is a constant challenge to innovate and optimise. We work with a DevOps mindset and aim to make our services as efficient and reliable as possible. You’ll have plenty of room to contribute your own ideas and experiment with new technologies.
Dit zijn de functie-eisen
You enjoy learning and pick up new things quickly. You identify opportunities for improvement and know how to involve others in making them happen.
Important aspects of Agile working, such as collaboration, responding to change and delivering value in short cycles, fit naturally with the way you work. You have strong communication skills, take ownership and are confident in making decisions.
Your primary experience is with TypeScript. You’re also willing to learn other technologies and broaden your technical knowledge. Experience with both is considered an advantage.
What else you bring
- You have a higher professional education level (Dutch HBO level) or equivalent level of working and thinking.
- You have experience developing serverless applications on AWS and deploying applications using CDK.
- You’re willing to learn other technology stacks and expand your knowledge.
- You’re enthusiastic, have a strong sense of responsibility and look beyond your own area of expertise.
- Team spirit. Your flexibility and ability to collaborate make the team stronger.
- You have experience writing automated tests, including unit, integration and end-to-end tests.
- You’re interested in the latest developments in backend technologies.
You are able to communicate effectively in Dutch or English.
It’s a plus if you have experience with
- CI/CD
- BFF architecture
- DevOps and Agile ways of working
- Cloud services, specifically AWS
- Refactoring legacy code
- Test-driven and data-driven development
Diversity and inclusion at NS
At NS, diversity and inclusion matter to us. They make working together more enjoyable and help us achieve better results. Whatever your background or beliefs, we are above all interested in your perspective on this role.
Dit zijn de arbeidsvoorwaarden
Working at NS means you can make a real difference in the dynamic world of sustainable mobility. You help keep the Netherlands accessible and connected for everyone. At NS, you'll enjoy a great deal of freedom and plenty of opportunities for personal and professional development. We promise that no two days are ever the same. And as one of the most attractive employers in the Netherlands, we offer even more. For this position, you can expect:
- A salary in Scale 60, ranging from €3,743 to €6,491 gross per month (based on a 36-hour workweek and depending on your experience)
- The opportunity to work from home and enjoy flexible working hours (by mutual agreement)
- A 36-hour working week
- A 3% year-end bonus, 8% holiday allowance, and an excellent pension scheme
- A permanent contract after one year, subject to good performance
- Free travel by train in 2nd class; travel in 1st class is available for a small personal contribution
- Your family can travel free of charge during off-peak hours
- 144 hours of statutory leave (based on full-time employment), plus additional leave depending on age (at least one extra week)
- The option to exchange three Christian public holidays for three non-Christian public holidays
- Discounts on European rail travel after one year of employment with NS
- A flexible benefits plan, including options such as a bike scheme, additional pension contributions, or extra vacation days
Want to learn more? Take a look at our employment conditions and collective labour agreement (CAO).
Solliciteren naar deze baan
Apply directly using the application button. Within minutes, you will receive an automatic confirmation of your application, and we will respond within two weeks.
This vacancy may close earlier if we receive a sufficient number of suitable applications, so don't wait too long to apply.
You may address your application to Jeroen van den Berg, Corporate Recruiter IT.
Do you have questions about the recruitment process? Please email from our Front Office at [email protected].
Prefer to speak with someone by phone? Contact our Front Office on +31 (0)88 671 3666.
Good to know
- A background screening, including a Certificate of Conduct (VOG), is part of the recruitment process. This also includes signing integrity and confidentiality agreements.
- We believe it's important that everyone feels welcome and valued at NS. This is reflected in our hiring practices.
- We are recruiting for this position directly and are not seeking support from agencies or intermediaries.
- This role is not available on an interim or freelance basis.
You can count on NS
Working at NS means having the opportunity to make a real impact on sustainable mobility. Together, we help keep the Netherlands accessible and connected for everyone.
At NS, you'll enjoy a high degree of freedom and responsibility, and we can promise you one thing: no two days are ever the same.
Our core values are openness and reliability. We are driven by results and continuously strive to move forward.