Ypto is looking for an experienced SAP CO-PS Specialist to reinforce our team!

The purpose of the Senior SAP CO & PS Functional specialist role is to act as a key player in the evolution and support of the SAP Controlling & Project systems application and its interfaces in the NMBS system landscape; this includes:

  • Manage the controlling processes
  • Manage the project system processes
  • Master data management ( Cost elements, cost centers, internal orders, WBS, …)
  • Fiori applications
  • Interfaces to and from different Legacy Applications via SAP PO/PI and SAP Idocs and web services
  • Interfaces to and from other SAP systems

Providing day-to-day excellence in Functional & Technical Application Support which entails:

  • End to End responsibility for resolving assigned incidents/requests
  •  Diagnosing/Analyzing issues and changes, design solutions
  • Preparation of functional/technical specifications using technical expertise
  • Customizing in SAP CO and PS
  • Give courses/ training in both national languages

Major Accountabilities:

  • Incident handling, problem and change management, including the unit-, integration- and regression testing of the solution. This also includes drawing up functional specifications for the development team and customizing the SAP CO & PS application.
  • Work with NMBS Process Leads, NMBS key users and other BA Finance members to operationally manage assigned change requests, bug fixes and small operational enhancements. Ensure fit with the existing solutions to achieve customer/user satisfaction, engagement/adoption by the business.
  • Actively bring in best practices, out-of-the box thinking, insights and technology trends to help improve the SAP CO & PS application and level of service regarding the application.
  • Proactively try to improve support, training, processes and communication with regard to the SAP CO & PS application
  • Actively participate in small or larger projects that involve changes to the SAP CO & PS application.

You will report to the Finance Business Area Lead and will work closely with the NMBS Finance department and other NMBS IT functions.


  • University (Master) degree or equivalent experience.
  • Strong analytical skills to analyze functional requirements and translate these into functional specifications and technical implementations.
  • A minimum of 8 years of experience in customizing and maintaining SAP CO and PS:
    • Strong Experience with the SAP CO & PS modules:
      • CO-OM, CO-ORD, planning and actuals
      • CO-PC with a strong integration to PP, PM and CS
      • CO-PA accounting based
      • CO-PCA
      • PS financials with a strong integration to PS logistics and Asset accounting
      • FCC (Financial closing cockpit) with Redwood job scheduler integration
    • SAP OData and Fiori Design experience considered as an advantage.
    • SAP BRF plus, Open text and Exstream knowledge considered as an advantage.
    • Experience in integration with other SAP ECC modules FI, SD, MM , BW, HR.
    • Other SAP experience: LSMW, Solman, EnableNow, Abap debugging, Job scheduler Redwood.
    • Experience with S4/HANA is considered as an advantage
  • Excellent knowledge of the core controlling processes.
  • Knowledge of IFRS considered as an advantage.
  • Strong communication skills. The candidate should be able to verbally communicate, read and write in Dutch, French and English.
  • Strength in building and reinforcing good governance, risk management and strong operational practices
  • Have more than 8 years of relevant experience in a similar function or through project experience
  • Have completed at least 2 SAP implementation cycles

What Ypto offers 

Within our open company culture you'll contribute to the digital transformation of the NMBS. You have a job with a profound impact on society and which leaves plenty of room for your own contributions. Aside from a good work-life balance and a competitive salary, we can offer:

  • Up to 3 days of remote work per week (+ flexible schedule)
  • 35 days off
  • company car + public transport subscription
  • Target bonus
  • Hospitalisation insurance (incl. dental) for the entire family, group- and invalidity insurance (cafetariaplan)
  • Meal- and Eco vouchers
  • Net fees for remote work and carwash + internet budget
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3 reasons to choose Ypto 

Icoon uitdagingen: bergtop

Challenging projects

At Ypto, you never stand still. Every day is different and offers the opportunity to be challenged to innovate in order to find the best solution for our customer.

Maatschappelijke impact icoon

Social impact

Through your work, you contribute to the future of Belgian railways and have a tangible impact on millions of people.

Doorgroeimogelijkheden icoon

Growth opportunities

Initiative, trust and self-management are key. You will have the support of your colleagues to develop and the opportunity to grow.

Application procedure

Did you apply for a position at Ypto? Or are you curious about how our application procedure works? We follow the four steps below each time. Depending on the position, an additional interview or assessment may be required.


CV screening

We take a close look at your CV and check whether it matches the profile you are looking for. We may call you briefly to ask about your motivation and experience.


Interviews and questionnaire

If the outcome of this screening is positive, you are invited to a (video) interview with your direct supervisor and your HR Business Partner. During these interviews, we discuss your motivation, knowledge, experience and skills as well as the content of the job. We also talk about the online questionnaire you filled in prior to the interview.


Reference analysis

Finally, we contact the references you will have provided. This way, we can make you out better.


We have a match: welcome to Ypto

Have you been selected? If so, we will be happy to draw up an attractive proposal and welcome you to our organisation.

Spontaneous application

Would you like to work with us on the future of SNCB but cannot immediately find the right vacancy? Then feel free to submit a spontaneous application. Who knows, you might soon be part of our team!