Senior Data Scientist

Closed for now

Senior Data Scientist

Matrixian Group Amsterdam

What is required?

  • Academic level of maths and statistics
  • 3 years of experience in programming languages R and / or Matlab, Python, SQL
  • Work experience in building prediction models
  • Able to work independently
  • Want to share knowledge
  • Living in or near Amsterdam

What will you get?

  • €2,500 - €3,500 gross p/m
  • 40 hour workweek
  • 24 vacation days
  • Rarely work on the weekend
  • Possibility to follow in-depth training and courses

What will you do?

  • 40% Building models
  • 30% Guiding data team
  • 20% Research
  • 10% Internal consultation

This vacancy has been created based on interviews with employees to help you get a realistic preview of the job.


As a Senior Data Scientist, you are responsible for building ‘predictive’ and ‘machine learning’ models with the help of data gathered by the Matrixian Group. You make sure that the collected data is cleaned up so that it can be used for the models you build. When you have built a model, you supervise the data team using it. Together with the data team, you come up with solutions for clients who want to get more out of their data and build your models in order to help them do this.


Data Scientist
Keshava Ragavendra

A day is enjoyable when I can continue with my own work and solve problems for the team and myself so that we obtain a good result. Then you get a lot done and that gives me a good feeling.

A day is less enjoyable when I have a lot of meetings and questions in between. Then I can concentrate less on my own work

  • 09:00
  • 10:00
  • 11:00
  • 12:00
  • 13:00
  • 14:00
  • 15:00
  • 16:00
  • 17:00
  • 18:00
    • Coffee and mail
    • Scrum meeting
    • Collect and update data
    • Lunch
    • Data delivery meeting
    • Data interpretation
    • Coffee and mail
    • Scrum meeting
    • Lunch
    • Meeting data project
    • Deliver data to customer
    • Update mail
    • Coffee and mail
    • Scrum meeting
    • Sprint planning
    • Building machine learning model
    • Test model

Firsthand experience

A client asks you to predict the company’s turnover? What do you do?

First, you ask the client for old data. You have it checked by someone from your data team, to see if it is unique and clean data. You get this data back and on the basis of this see if you can build a model that can predict the turnover. It could be that you don’t have enough data, then you discuss this with a junior in the data team and they ensure you do have sufficient data. When you have completed the model, you can show the client what your findings and the predictions for the company’s turnover are.


As a Data Scientist at Matrixian Group, you can go on to become a Team leader. You can follow relevant training courses fort his. If you like, you can also organize (regular) training courses within our Data Academy. At the same time, you also work on your personal growth by following training courses.

Data Scientist
Senior Data Scientist
Team Leader?

Working at Matrixian Group

Matrixian Group was founded in 2016 and interprets (open) data for people, companies and public authorities. Matrixian Group focuses their information services on the specific request of their clients. This way, they can directly improve the quality of their services and help their client optimally. Matrixian Group provides services to the top 1000 companies in the Benelux and to public authorities.  
  • HQ in Amsterdam
  • Active in three countries
  • 25% / 75%
  • Average age 27
  • 18 eployees in the Netherlands
  • 21 employees worldwide


Sjoerd Egberts (24) - Product Marketeer

Why did you decide to work for this company?
When I graduated, I travelled a lot and had several different jobs. When I got back to the Netherlands I wanted to work for a company that offered a promising perspective where I could further my ambitions, and I soon came across the Matrixian Group. What I find appealing is the challenging and varied job, and the personal development opportunities.

What was your previous job?
Sidejobs as a construction worker, grower and selling for charities.

What do you do in your spare time?
Playing sports, going to festivals and hanging out with friends.

Maaike Klaver - Office Manager

Why did you decide to work for this company?
I was looking for a part-time job next to my studies. I liked the flexibility very much. In addition, I like helping a company grow and creating my own job.

What was your previous job?
A job in the catering industry

What do you do in your spare time?
I like to work out and hang out with friends

Stef Vernooij (21) - Business Developer

Why did you decide to work for this company?
I decided to work at Matrixian Group, as it is a fast growing start-up where you have a lot of freedom to develop yourself. The team is very ambitious and we also have a lot of fun.

What did you study?
Commercial Economics.

What do you do in your spare time?
In my spare time I like to go to football games, festivals and sport at the gym.

Keshava Ragavendra (26) - Data Scientist

Why did you decide to work for this company?
I wanted to work for a start-up and can really identify with the CEO’s vision. He wants to become the largest data company in the Netherlands and later in Europe too. I want to be part of this.

What did you study?
Biomedical Engineering.

What do you do in your spare time?
I love to cook and watch sports games.

Stefan Krijnen (44) - Chief Technology Officer

Why did you decide to work for this company?
The reason I chose the Matrixian Group is that there are still a lot of challenges. It is still a small team and that provides many opportunities for creating your own job.

What was your previous job?
Chief Technology Officer NavAds.

What do you do in your spare time?
I like to go to the beach or go out for dinner.

Interesting job?