Frontend Developer Personnel Adjustment

That is why you want to work as a Senior frontend developer at NS

• Your work has impact! As a developer of personnel adjustment, you contribute directly to keeping the trains running in the Netherlands.

• You are involved from start to finish in the Development and DevOps challenges. From design to development and management.

• Through the products we develop, you contribute to a mobile, accessible, and sustainable society. With a good chance of finding a seat, trains running on time, and the rapid resolution of any disruptions on the tracks.

IT plays a major role in our organization and therefore good developers are indispensable. Thanks to their commitment, trains run on time, the chance of a seat is optimal, and you as a traveler have up-to-date travel information 24 hours a day. That is the power of our IT.

The Agile Release Train where your new workplace awaits works on the IT of Adjustment. With this, the people of Operations Control manage the NS train service daily. 7,000 train journeys, around the clock. We ensure, for example, that our trains are long enough to offer all our passengers a seat and that there is a driver and conductor on board. Not only when the trains run according to plan, but precisely also when everything runs differently than expected due to a defective train or a collision.

IT developments move fast, so you actively think along about possibilities for the future. The DevOps team, including Product Owner and Scrum Master, works on the foundation and subsequent expansion of the Personnel Adjustment Application. As a senior frontend developer, you interact daily with your team colleagues, other teams, and for example, also the software architects. You monitor the architectural frameworks and contribute to the architecture roadmap.

The adjustment cluster is part of the Train Service Result Area. We provide the IT systems that support the processes of planning, controlling, and adjusting rolling stock and the timetable. Our team's work location is hybrid, with days in the office in Utrecht and days from home.

Our team follows the Agile way of thinking and working. Thus, we are fully committed to Continuous Delivery, Continuous Integration, and DevOps. And that within a Release Train with eight Agile teams with a multidisciplinary composition. You will get space and time to brainstorm, share knowledge, and learn.

The current system for our personnel adjustment is still a monolithic application and must be modernized into microservices. In order to further shape the digitalization of the train service. We will start this in the short term. Based on your experience with modernizing monolithic 24/7 rail applications, you are the engine that helps us succeed in this assignment.

• HBO/university level of work and thinking; excellent command of the Dutch language.

• At least 5 years of experience as a developer in a complex IT landscape.

• Experience with multi-user systems with high requirements for availability and security.

• Developing a ReactJS frontend on a Java backend.

• Processing live server mutations (WebSocket/SSE) and merging them with concept changes, without the user losing work.

• Monitoring performance with thousands of journey segments and employees in view.

• Designing the API contract together with backend developers (mutation events, versions, idempotent commits).

• Writing component and end-to-end tests.

• Being able to maintain CI/CD pipelines.

• Agile/DevOps mindset; team player who stands for Ownership, Commitment, Courage, Focus, Openness, and Respect.

• Participating in the on-call service in the long term: being reachable by phone 24/7 for one week to analyze and resolve incidents, approximately 1x every 6 weeks.

You recognize yourself in the following:

• You bring a lot of experience, and you master your subject matter quickly. You have collaborated extensively with solution architects, product owners, and end users.

• You learn quickly and enjoy it, you see where opportunities for improvement lie, and you bring others along with you. You are a strong advocate for AI-driven development and are able to move with that unpredictable movement toward the software development of the future.

Working at NS means that you can make *the* difference in the dynamic world of sustainable mobility. You help keep the Netherlands accessible, for everyone. At NS, you get a lot of freedom. The possibilities to develop yourself are great. We promise you that no day is the same. And as one of the most beautiful employers in the Netherlands, we have even more to offer. For this position, including:

• Scale 60 = € 3,743 and € 6,491 gross per month (scale 60) (based on 36 hours - scaling based on work experience)

• The possibility of working from home and flexible working hours (in consultation)

• A 36-hour work week

• 3% end-of-year bonus, 8% holiday allowance, and an excellent pension scheme

• Upon good performance, you will receive a permanent contract after one year

• Your train travel in 2nd class is free; travel in 1st class is possible with a small personal contribution

• Your family travels for free during off-peak hours

• 144 hours of statutory leave (based on full-time employment) plus extra leave depending on age (minimum one week)

• The possibility to exchange 3 Christian holidays for 3 non-Christian holidays

• Discount on European train travel once you have worked at NS for 1 year

• A choice plan including, among others, a bicycle plan, extra pension accrual, or extra vacation days

Want to know more? View our employment conditions and collective labor agreement (CAO).

Apply directly via the application button. Within a few minutes, you will receive an automatic application confirmation, and we will respond to your application within 2 weeks.

You can address your application to Jeroen van den Berg, Corporate Recruiter IT.

Do you have any questions about the application process? Then mail our front office at recruitment@ns.nl.

Would you prefer telephone contact? Then call our front office at 088-6713666.

• A background check, including a VOG (Certificate of Good Conduct), is part of the application procedure. This also includes signing an integrity statement and a non-disclosure agreement.

• We believe it is important that everyone who works with us feels at home. This is reflected in our hiring policy. Read more here.

• With this vacancy, we are recruiting our new colleague ourselves. This is NOT a call for acquisition. The position cannot be filled on an interim basis. Please see our hiring page for that.

Working at NS means that you can make the difference in the world of sustainable mobility. You help keep the Netherlands accessible, for everyone. At NS, you get a lot of freedom. We promise you that no day is the same. The core values of NS are open and reliable. We aim for results and want to move forward.