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Data Scientist

Basic-Fit

Hoofddorp
Full-time
2-5 years experience
Hybrid

€3,500 - €5,300 per month

Work Arrangement

Office Days per Week: 4 days

Key Skills

Machine Learning
Python
SQL
Databricks
Apache Spark
PySpark
MLOps
MLflow
Statistics
Hypothesis Testing
Experimentation
Predictive Modeling
A/B Testing
Large-Scale Data Processing
Communication
LLMs and AI Agents

Job Description

Turn data into decisions for millions of members 

You don’t want to just build models. 

You want your insights to be used, trusted, and acted upon. 

You want to see decisions being made because of what you built. 

 

At Basic-Fit, your data solutions support millions of members across Europe. Operations, marketing, finance and more will use what you build to make better decisions and to make our member interactions more relevant. 


This Is What Your Role Looks Like

You’ll join the Data Platform Team and work side by side with the business to turn their questions into data-driven solutions. You’ll be involved in the entire lifecycle of a solution: from ideation and proof of concept to rollout and post-launch performance tracking. 


In a typical week, you might: 

  • explore our data together with stakeholders and translate business questions into data science solutions 
  • design, develop and deploy predictive models on our Databricks platform, across a variety of domains such as operations, marketing and finance 
  • set up experiments and A/B tests to measure the real impact of your solutions 
  • explore how AI, LLMs and agents can create new value and improve how we work 
  • present your results to stakeholders in a way that supports better decision making 
  • collaborate with Data Platform Engineers, Analysts and BI Developers to bring solutions into production 
  • increase data literacy and demystify data science across the business 

 

Good ideas don’t stay in slide decks here - they get built. 


The team you’ll work with 

You’ll be part of a multidisciplinary Data Platform Team with: 

  • Data Platform Engineers 
  • Analysts 
  • BI Developers 
  • Data Scientists 

Together, you support almost every department at Basic-Fit, enabling teams to act on reliable, well-governed data. 


Who Are You?

You’re an analytical thinker who can separate the signal from the noise, spot trends and turn insights into concrete actions. A self-starter with strong team and problem-solving skills. You don’t need to tick every box. You will thrive here if most of this sounds familiar: 

  • Bachelor or Master degree in Mathematics, Computer Science, Econometrics or a related field 
  • 3+ years of relevant work experience in data science 
  • Strong knowledge of machine learning algorithms, frameworks and packages, and experience taking models from idea to production 
  • Experience developing models across different domains (e.g. operations, marketing, finance), and the flexibility to quickly get up to speed in a new business area 
  • Strong skills in Python and SQL, and hands-on experience with Databricks and Spark (PySpark) for large-scale data 
  • Proven experience with MLOps practices, such as experiment tracking, model deployment and monitoring (e.g. MLflow) 
  • Solid knowledge of statistics: hypothesis testing, experimentation, regression, etc. 
  • Excellent communication skills in English, able to explain complex results to non-technical audiences 
  • Experience with AI, such as working with LLMs and building agents, is a plus 

How We Work Together

The Data Platform Product Owner is responsible for stakeholder engagement, hiring decisions, and the longer-term roadmap. Once priorities are set, you and the PO work closely together to break the roadmap down into manageable steps and drive delivery. You’ll work directly with Data Engineers, BI Developers, Data Scientists, and Data Analysts, being both a technical anchor and a delivery driver for the team.


What We Offer You

At Basic-Fit, it’s not just about work, it’s about your growth. As a Data Scientist, you’ll have the freedom to make an impact and develop yourself in a dynamic environment.


What you can expect from us:

  • Learning & Development: Unlimited access to GoodHabitz and LinkedIn Learning.
  • Career Growth: Plenty of opportunities for professional and personal development.
  • Work Culture: An informal, international, and down-to-earth environment. We value working together, so we work 4 days in the office, 1 day from home.
  • Innovation: Your ideas contribute to strategic projects.
  • Salary: A monthly gross salary between €3.500 and €5.300 based on 40 hours, depending on your experience and background. 
  • Perks & Benefits: Travel allowance, bike plan, health insurance discounts, remote work allowance.
  • Fitness: Access to our gym at HQ.

About Basic-Fit

Basic-Fit is Europe's leader in the value-for-money fitness market, with more than 4.7 million members across 1,650+ clubs in 6 countries. We are continuously growing and improving. If you're looking for a place where you can make an impact while having fun at work, you've come to the right place!


What Makes Us Unique?

  • Work with Impact: What you do makes a difference. We don’t just work for our members, partners, and teams—we work with them.
  • Collaboration: Everyone works together to achieve goals and celebrate success.
  • Diversity & Inclusion: We welcome everyone into our workplace.

🎯 Apply Now!
Ready for your next adventure? Click the Apply button, and we’ll get in touch with you as soon as possible.


Questions? Feel free to contact Yara at [email protected].



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Core Responsibilities

Partner with business stakeholders to develop, deploy, and monitor predictive models and data science solutions across operations, marketing, and finance. Design experiments, communicate findings to support decisions, and collaborate with data platform colleagues to bring solutions into production.

Requirements

A bachelor’s or master’s degree in mathematics, computer science, econometrics, or a related field, plus at least three years of relevant data science experience. Requires strong machine learning, Python, SQL, Databricks, Spark, MLOps, and statistical skills, along with the ability to communicate results clearly in English; experience with LLMs and agents is a plus.

Benefits

  • Learning and Development Access
  • Career Growth Opportunities
  • Travel Allowance
  • Bike Plan
  • Health Insurance Discounts
  • Remote Work Allowance
  • Headquarters Gym Access

About Basic-Fit

Industry: Wellness and Fitness Services

Company size: 5,001-10,000 employees

Founded in 2013, Basic-Fit has grown into Europe's value-for-money fitness leader with 4.7 million members, 1,650+ clubs, and 8,000+ employees across 6 countries. Our mission is simple: make fitness accessible to everyone, every day. We're a fast-growing, tech-driven company with an international mindset and a no-nonsense culture, built on five values that form our name: Be yourself, Accessible to all, Smart in what we do, Inclusive by nature, Committed to growth. Our headquarters is in Hoofddorp and we're always looking for people who want to help Europe move more and feel better. Ready? Go for it.

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