Junior Data Scientist

Working with and for a smile

Being the most beloved supermarket in the Netherlands and Belgium. Thats our ambition. We want to surprise customers and exceed expectations so they enjoy doing their groceries with us. With over 700 Jumbo stores in the Netherlands and Belgium and the option for home delivery via we work every day towards that ambition. Working together as entrepreneurs to win over the customer thats what we strive for at Jumbo.

As a Data Scientist within Jumbo you build data-science products that help to turn even more customers into fans. Imagine walking into a Jumbo supermarket and seeing the effect of your models all around you: a data-driven lay-out of the store fresh products due to an excellent forecast an assortment selection of products that is well tailored to the local market needs and opening times which are based on granular data of the environment the store is located in.

Getting started! This is what youll do

Straight from the start youll be working on challenging projects that will stretch your analytical and interpersonal capabilities. Those projects can be all throughout Jumbo ranging from logistics to marketing and from formula to procurement. Youll build data science products from start (raw data) to end (production grade models). Easily 50% of your time might is spent on data preparation exploration (advanced) analytics and even some BI so it is important you enjoy that as well next to Machine Learning / building AI Agents. We focus on outcome not output: turning customers into fans by better decisions based on the insights you uncover.

Your workday as a Junior Data Scientist at Jumbo:

• 09.00 11.00: you work in DataBricks (PySpark) on our massive datasets to improve the model that estimates transferability of products which plays a key role in selecting the right products in our assortment
• 11.00 12.00: you look into the latest results one the machine learning models in your portfolio generated.
• 12.00 12.45: lunch meeting with your colleagues from DS&A in our Foodcafé
• 13.00 15.00: you peer review a model developed by a colleague for improving our loyalty offers leveraging and expanding your knowledge about the transferability model
• 15.00 17.00: you attend a workshop that looks into improving our differentation of store lay-outs using a data-driven approach.

Together we are Jumbo: Here you will work

As a data scientist you are part of an enthusiastic international team of 15 colleagues. Youll report into Wendell Kuling. We would describe the atmosphere at the team as cooperative entrepreneurial committed to delivering and always improving/learning.

Youll cooperate closely with colleagues from different departments including end-users data analysts and consultants from the business departments and engineers from IT.

At Jumbo we look for go-getters people with good ideas and the courage to work together on them. We care for each other: our customers colleagues and the world around us and we want to do a little better every day. All our (future) colleagues bring a healthy dose of Jumbo DNA with them and so do you! Additionally you have:

• MSc or Ph.D. with excellent academic results in the field of Computer Science Econometrics Data Science or other quantitative fields with 0 to 3 years of relevant experience;
• Youre passionate about both Machine Learning and Agentic AI and bring a solid understanding of supervised and unsupervised learning methods (RF LGBM XGB Lasso/Ridge SVD KNN ALS LLMs ) statistics and time series analysis (BSTS SARIMA-X etc.). Knowledge of optimization methods (LP / MILP) is a strong plus;
• You know that the field of Data Science is continually evolving so a learning attitude is second nature to you. And you realize that staying effective requires learning both soft- and hard-skills.
• You rather deliver code and working data-products than Powerpoint slides: Python is required PySpark is a strong pre. SQL and R are nice to haves. You like to build data-tooling such as PowerBI. DataBricks experience would be great;
• Solid communication and cooperation skills: you can explain what the so what (and sometimes why) is of a model recommendation. You take end-users of your models in the right pace along with you in the (im)possibilities of your models;
• Although Dutch language skills are a pre they are not required.

At Jumbo you will find a working environment with warmth fun and attention to each other where you have plenty of room to contribute to our ambition to become the most customer-oriented company. And just as you are there for our customers we are there for you. You can count on:

• A gross salary between 3.700 - 4.800 per month (based on 40 hours).
• An annual bonus of max 5% of your annual salary based on organizational goals.
• 30 days of paid holiday (with the opportunity to buy or sell days of paid holiday) and 8% holiday allowance. You build up a pension through participation in the Pension Fund for the Food Industry.
• An allowance for your travel expenses ( 0.21 cents per kilometer with a maximum of 35 kilometers one way). We like to work together in the office but you can also work partly from home.
• Room for entrepreneurship growth and development. Not only in your job but also through our Jumbo Academy online training through GoodHabitz and with a training budget.
• Daily fresh lunch in our Foodcafé good coffee and fresh fruit. You can sport daily at our own Jumbo Gym for a small fee.
• Colleague discounts such as 10% off your groceries (up to 325 per year) participation in our collective health insurance or discounts through Beneftits at Work.

Want to know more about our employment conditions Click here.

Do you see yourself working as a Junior Data Scientist at Jumbo Then we look forward to receiving your application!