Job Description Who we are ADC is a European data and AI consultancy with offices in the Netherlands, Sweden, and Denmark. We help organisations turn data and AI into real impact, leading a mission to accelerate the responsible use of Data and AI. We partner with clients to achieve their goals through data-driven solutions across multiple industries: financial services, life sciences, healthcare, the public sector, retail, and transportation.

Our collective brings together the full data value chain under one roof:

• Data Strategy: Turning buzzwords into clear, business‑aligned roadmaps
• Data Engineering: Building secure, scalable, future‑proof data foundations
• Analytics & Data Science: Creating AI‑powered tools and models that actually get used
• Design & Visualisation: With our in‑house studio CLEVER°FRANKE, turning complex data into experiences people enjoy using

We're leveraging our expertise in advanced analytics, machine learning, and business intelligence to power ADC's growth and deliver unmatched value to our clients.

We are looking for a Senior Decision Scientist who is deeply passionate about predictive modelling, causal inference, and optimisation to partner with our Retail team on a freelance basis. You will spearhead our advanced pricing initiatives for a leading e-commerce client, building robust forecasting models that directly impact commercial strategy.

This isn’t a standard analytics role. You’ll be part of a true collective, working alongside highly specialized decision science teams. It’s about understanding complex methodologies to a deep research level, connecting predictive insights with operations research, and deploying state-of-the-art causal machine learning techniques that shape dynamic pricing on a massive scale.

Where you’ll make an impact

• Drive advanced forecasting for e-commerce pricing
• Develop and scale Machine Learning models for forecasting longitudinal data to optimize pricing strategies.
• Utilize advanced techniques such as tree-based models, boosting, bagging, ensemble methods, LightGBM, XGBoost, and related methods.

What You Bring At ADC, we're not just consultants: we're leading experts in Data & AI, using our expertise in strategy, business operations, and advanced analytics. What unites us is a shared way of working: breaking down complex challenges to change how organisations operate.

For This Role, That Means

• Senior-level expertise: You bring significant experience in decisions data science or machine learning.
• Strong academic foundation: A PhD in Machine Learning, Computer Science, Statistics, Econometrics, Economics, Mathematics, or a highly related quantitative field is strongly preferred and a great indication of the methodological depth required for this role.
• Deep technical toolkit: Extensive hands-on experience in ML methods for forecasting longitudinal data (LightGBM, XGBoost, ensemble methods) and causal machine learning / causal inference methods (DoubleML, fixed effects models, potential outcomes).

What’s In It For You At ADC, we value our freelance partners as true extensions of our collective. We bring you on board for your deep expertise, giving you the space to deliver exceptional work on projects that matter. That means:

• Impact you can point to: You’ll see your work in action, directly shaping how leading e-commerce organisations make pricing and forecasting decisions at scale.
• The freedom to innovate: We hire you for your senior expertise. You’ll have the autonomy to recommend better ways to build models, propose smarter algorithms, and challenge the status quo.
• True partnership: You won’t be working in a silo. You’ll collaborate closely with our internal experts and the client's PhD researchers, sparring on complex methodologies at the highest academic and practical level.
• Competitive compensation & flexibility: We offer highly competitive freelance rates that match your seniority, along with the flexibility to manage your working hours and deliver on clear, structured project goals.
• An inclusive culture: Even as a freelancer, you’re part of the team. You are always welcome to join our daily lunches, Friday drinks, and social events whenever you are at the office.

What To Do Next If you believe in building with heart, thrive on collaboration, and want to collaborate with a team that challenges and supports you, we want to meet you! If this sounds like your next contract, apply through the link below.

Amsterdam Data Collective is an equal opportunity employer. To shape a better future, we value diversity and promote equality. No characteristics are discriminated against, as indicated in Directive 2000/78/EC. We encourage and welcome all applications. Additional arrangements or adjustments to support your application can be discussed further.