Senior Data Science Consultant

About the role

Sia is seeking a Senior Data Science Consultant to join its global consulting practice. You will work on transformation projects for clients across sectors, applying advanced analytics, machine‑learning and optimisation techniques to drive business impact.

Key responsibilities

• Lead modelling and digital‑transformation assignments, including business and IT analysis.
• Develop predictive models using supervised and unsupervised learning, econometrics, forecasting and quantitative diagnostics.
• Design and implement constraint‑optimization solutions and simulation models for operational research.
• Apply algorithmic techniques to process large, unstructured data sets (big‑data analytics).
• Contribute to Sia’s internal service development, business‑development initiatives and commercial proposals.
• Assume team‑leadership responsibilities and collaborate with colleagues at all levels.

Required profile

• Master’s degree in applied mathematics, IT, civil engineering or a related field.
• 2–6 years of consulting experience, preferably in data‑science projects.
• Strong analytical mindset, result‑orientation and rigorous work ethic.
• Excellent interpersonal and communication skills; ability to work in multilingual environments (French, Dutch, English).
• Willingness to engage in temporary client assignments.

Required skills

• Machine learning
• Artificial intelligence
• Statistics
• Econometrics
• Forecasting
• Optimization (constraint‑based)
• Simulation modelling
• Big‑data processing algorithms

What we offer

• International, inclusive workplace with a focus on employee well‑being and CSR.
• Collaborative atmosphere that encourages innovation and entrepreneurship.
• Personal development plan with regular follow‑up and training opportunities.
• Competitive salary, mobility budget, hospital insurance and performance‑related bonus.