Altesia

What we do: Altesia is a consultancy firm specializing in Finance, Procurement, Tax and Accounting, and Human Resources. We provide flexible and pragmatic solutions through advisory services and interim management, supporting clients ranging from start-ups to large corporations. Our consultants and interim managers offer part-time or full-time support, combining project follow-up, technical expertise, and coaching to deliver tailored, results-driven solutions that enhance operational efficiency and strategic decision-making.

Where we are located: Altesia's headquarters are located at Rue François Dubois 2, 1310 La Hulpe, in the Walloon Region of Belgium.

Short history: Founded by Gaël Claude, Mathieu Delveaux, and Cédric Van Themsche, Altesia has established itself as a trusted partner in consultancy, focusing on delivering clarity, structure, and sustainable growth for its clients. The company has grown by addressing workforce challenges and adapting to the evolving needs of its clients.

Organization & culture: Altesia values a no-nonsense, integrity-driven approach, emphasizing mutual growth for clients and consultants alike. The company fosters a collaborative culture where experienced professionals work closely with clients to implement effective, tailored solutions. The team includes consultants and interim managers specialized in finance, procurement, and HR, committed to excellence and long-term impact.