HELLER Ingenieurgesellschaft mbH was founded in Darmstadt (Germany) in September 2001 and continues the activities of BHI Bühler Heller Ingenieurgesellschaft GbR, which emerged in 1997 from the department for construction and maintenance management of TÜV Hessen headed by Dr. Slawomir Heller.

In 2009, HELLER opened another office in Poland. HELLER Consult spólka z o.o has supported the company's activities ever since.

With approximately 50 employees, the owner-managed company stands for sustainable organic growth.