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Executive board from left to right:
Dipl.-Ing. Harald Augenstein,
Dipl.-Ing. (FH) Hermann Sommer,
Dipl.-Ing. Matthias Gerold,
Dr.-Ing. Slobodan Kasic,
Dipl.-Ing. Rudi Lehnert

Executive board

Executive board

The future needs sustainable solutions.

All board members are graduates from a technical university with the title of “Diplom-Ingenieur” (diploma engineer), members of the Baden-Wuerttemberg Chamber of Engineers, and thus Consulting Engineers according to the statute of the Chamber of Engineers. Our key principles: independence and personal responsibility. In order for us to maintain these principles, no other businesses share a stake in the limited company of Harrer Engineering (Harrer Ingenieure GmbH). In addition, the company has no shares in other commercial companies.

Dipl.-Ing. Matthias Gerold

+49 721 1819-200
  • Chief Executive and Partner
  • Head of Structural and Civil Engineering
  • Head of Special Constructions and Risk Management
  • Overall responsibility for staff
  • Head of EDP and IT
  • Checking Engineer for Construction Engineering, specialisation in solid an timber construction
  • Expert for the Federal Railway Authority (Eisenbahn-Bundesamt, EBA)
  • Officially appointed an sworn expert for the Karlsruhe Chamber of Industry & Commerce
Dipl.-Ing. Rudi Lehnert

+49 721 1819-700
  • Associate Chief Executive and Partner
  • Head of General Planning
  • Authorised Planner according to § 43, sect. 3, Regional Construction Ordinances (Landesbauordnung, LBO) of Baden-Wuerttemberg
Dipl.-Ing. Harald Augenstein

+49 721 1819-500
  • Managing partner
  • Head of Industrial and Commercial Construction
  • Authorised Planner according to § 43, sect. 3, Regional Construciton Ordinancees (Landesbauordnung, LBO) of Baden Wuettemberg
Dr.-Ing. Slobodan Kasic

+49 721 1819-400
  • Managing partner
  • Head of Bridge and Tunnel Construction, Foundation Engineering


Dipl.-Ing. (FH) Hermann Sommer

+49 721 1819-720
  • Managing Partner
  • Commercial Director
  • Head of Project Management
Dipl.-Ing. Marion Kleiber

+49 721 1819-230
Dipl.-Ing. Steven Metz

+49 721 1819-520
Dipl.-Ing. (FH) Roman Mieslinger

+49 721 1819-725