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Senior Business Analyst

sia

Bruxelles, Bruxelles, Belgium Hybrid permanent

Posted: March 6, 2026

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Quick Summary

We are seeking a highly motivated and experienced Business Analyst to join our team as a Business Analyst for our digital transformation initiatives.

Job Description

Sia is a next-generation, global management consulting group born digital, augmented by data, enhanced by creativity, and driven by responsibility. We partner with clients to resolve challenges and capitalize on opportunities. We believe that in today’s world of change and disruption, optimism is a force multiplier. 

We are a dynamic and innovative consulting company seeking a highly motivated and experienced individual to join our team as a Business Analyst. You will play among others a pivotal role in driving digital transformation initiatives for our esteemed clients. You will have the opportunity to work with a team of talented professionals and make a significant impact.

• Drive work within project teams and with a variety of business stakeholders to ensure that all business requirements are understood, documented, and met •
• Using Business Analyst industry tools & techniques, document information needs and functional requirements
• Proactively communicate and collaborate with external and internal customer and technology stakeholders
• Research, analyze, recommend, and participate in the deployment of solutions 
• Provide exceptional client delivery, exceed client expectations
• Engage in activities dedicated to support our culture
• Ability to drive data, metrics, and a structured approach to identifying clients’ problems and developing solutions
• Ability to solve broad business or technology problems by using principles derived from a deep understanding of disparate and complex data
• Experience with Business Requirement Documents (BRD) and translation of BRD to functional specifications and traceability matrices
• Experience presenting data-driven analyses based on business benefits to solve highly complex business and technical problems
• Ability to break down complex problems into clear and simple terms
• Ability to systematically consider the implications of problems and solutions in multiple domains at once, and solve problems across all domains  

• 5+ years of relevant business analysis experience
• Consulting experience required
• Masters’ degree in Marketing, Business Administration, or related field (advanced degree is a plus).
• Strategic thinker with excellent analytical and problem-solving abilities.
• Experience implementing moderately complex initiatives with demonstrated leadership in facilitation, planning, negotiation, and analysis
• Client-focused with exceptional communication skills.
• Adaptability to thrive in a fast-paced, dynamic environment.
• 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.
• Dutch, French and English fluent. 
• Proficient with the Microsoft Office Suite
• CBAP certification (or similar) a strong plus
• SQL, Tableau and/or PowerBI experience highly desirable  

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. 

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