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Senior Consultant in Data science

Sia Open · verified Oct 24, 2026
Hybrid Brussels Full-time Senior Data Science

At a glance

Senior Data Science role at Sia. Brussels · full-time.

Pay not stated Data Science salary

RoleData Science
SenioritySenior
LocationBrussels
WorkplaceHybrid
EmploymentFull-time
PostedOct 19, 2026 · 5d ago
Role brief

dataroles summary, based on the employer's posting.

What you'll do

  • Build predictive models using machine learning, AI and statistical methods to support client decision-making
  • Help design and implement optimization approaches and simulations for operational research problems
  • Process large, unstructured datasets with algorithmic methods, alongside business and IT analysis and some coding
  • Strengthen the data science offering and contribute to defining client needs and commercial activity
  • Take on team leadership responsibilities and connect with colleagues across levels

What you bring

  • A master's degree in civil engineering, applied mathematics, IT or a similar discipline
  • Two to six years in consulting
  • Fluency in French, Dutch and English
  • A strong interest in data and AI, with the ability to build expertise quickly

Who this fits

This role suits a collaborative, analytical consultant who can turn findings into clear conclusions and is interested in areas such as energy or finance. You should be ready to take on leadership responsibilities and travel abroad for temporary assignments. The position is based in Brussels with hybrid work, and a work permit cannot be provided.

From the employer

Sia is a next-generation, global management consulting group. Founded in 1999, we were born digital. Today our strategy and management capabilities are augmented by data science, enhanced by creativity and driven by responsibility. We’re optimists for change and we help clients initiate, navigate and benefit from transformation. We believe optimism is a force multiplier, helping clients to mitigate downside and maximize opportunity. With expertise across a broad range of sectors and services, our 3,000 consultants serve clients worldwide from 48 locations in 19 countries. Our expertise delivers results. Our optimism transforms outcomes.

As a Senior consultant in Data Science, you will be involved in transformation projects at our clients. You will execute project assignments in modelling and digital transformation (business/IT analysis and partial coding) environments with a good deal of business perspectives:

  • Machine learning, AI and statistics: developing predictive models of decision making (supervised and unsupervised learning algorithms, econometrics, forecasting, quantitative diagnosis,...)
  • Operational research : assistance in the design and implementation of constraint optimization solutions and simulation models
  • Big Data : Algorithmic knowledge for large and unstructured data processing

You will get the opportunity to actively contribute to Sia’s internal activities:

  • Development and reinforcement of our offer, by understanding and interpreting data science innovation and challenges
  • Business development, by contributing to need definition and participating in our commercial initiatives

As fast as possible, you will take up team leadership roles and connect with colleagues of all levels.

Equipped with the entrepreneurial fibre, you are ready to cooperate in a fast growing company.

In return, you can expect:

  • An international company that gives importance to diversity, inclusion, employee well-being and corporate social responsibilities actions.
  • A great working atmosphere with friendly and professional colleagues where innovation and entrepreneurship are encouraged
  • A personal development plan with a regular follow-up as well training opportunities to develop yourself
  • A competitive salary with great advantages, like mobility budget, hospital insurance, performance -related bonus,...
  • University Master Civil Engineer (applied mathematics, IT or similar)
  • 2 to 6 years’ experience as a consultant
  • Outstanding team player with great interpersonal and communication skills
  • Strong interest in data science and related sectors such as Energy and Finance
  • You have a strong interest in data and AI-related topics, the ability to quickly build expertise in these areas, and you’re excited about helping our clients seize the opportunities they offer.
  • Analytical mind, exploring options and able to synthesize into conclusions
  • Dynamic, result oriented, rigorous and committed
  • Trilingual: French, Dutch and English
  • Prepared to participate in temporary assignments abroad

We are unable to provide a work permit for this position

Sia is an equal opportunity employer. All aspects of employment, including hiring, promotion, remuneration, or discipline, are based solely on performance, competence, conduct, or business needs.

Opportunity

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Each morning you get everything that fits, strongest first.

Data Science

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Find me work
Opportunity

Data Science work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind dataroles.