Senior Consultant, Operational Excellence & Change

Sia; Brussel; On-site; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Mobility budget

Hospital insurance

Performance-related bonus

Job summary

Sia is seeking bright and dynamic Senior consultants to build relationships and deliver results across client projects. You will lead teams, coach new hires, and drive improvement initiatives by identifying processes, implementing solutions, and guiding client change.

The role values collaboration, initiative, and a passion for data-powered transformations. Join an international, diverse environment with opportunities for knowledge sharing, workshops, and professional development.

Qualifications

• Master-level degree or equivalent in a related field.
• 2–6 years’ experience as a consultant.
• Strong collaboration and communication skills.
• Lean/Green Belt or Black Belt certification.
• Analytical mindset with ability to synthesize insights.
• Autonomous, dynamic, and results-driven.
• Interest in data and AI topics and willingness to build expertise.
• Fluency in French, Dutch, and English; Dutch required.

Responsibilities

• Identify and simplify client work processes and propose improvements.
• Implement solutions in agreement with the client.
• Manage clients through change and coach them on performance gains.
• Take up team leadership by coaching new hires and juniors.
• Contribute to knowledge creation through workshops and publications.
• Collaborate across industries in a fast-growing, international firm.

Skills

Multilingual (FR/Dutch/EN)

Education

Master in Business Engineering/Management/Civil Engineering

Job description

Sia is seeking bright and dynamic Senior consultants to build relationships and deliver results across client projects. You will lead teams, coach new hires, and drive improvement initiatives by identifying processes, implementing solutions, and guiding client change.

The role values collaboration, initiative, and a passion for data-powered transformations. Join an international, diverse environment with opportunities for knowledge sharing, workshops, and professional development.