Oliver Messner started his professional career as a project technician for global assignments in an international manufacturing group. Due to his affinity for sales, he was very quickly entrusted with setting up an after sales organization. Through his successful work, he moved to an Austrian plant and mechanical engineering group, where he was responsible for sales in 27 countries. At least, Oliver Messner directed the developments of an international mechanical engineering group as technical managing director and company officer with statutory authority. In this role, he was specifically responsible for the digital transformation (mobile solutions, augmented & virtual reality, digitization of organizations, hybrid products, etc.) for the entire company.

In his MSc studies in applied business management, he focused on strategic corporate and organizational development, leadership and personnel management, as well as on innovation management in connection with digitization measures.

With his many years of experience in international project management, sales & after sales as well as in human resources and corporate management, he now supports companies as Managing Partner of ISG Personalmanagement GmbH and owner of S3 Consulting Messner, so that they develop holistically and sustainably.


  • Executive search from industry experts + top executives
  • Personnel management (search & selection)
  • Development + moderation of selection assessment centers
  • Conducting competence + potential analysis (diagnostics)
  • Out- & new placement advice
  • Interim management
  • Innovation management
  • Digital transformation
  • Strategic business and start-up advice
  • Lean management, service engineering & supply chain management
  • Training for sales & after sales – also especially for (service) technicians
  • Accompanying start-up’s | SMEs | int. Enterprises
  • Expertise in the following areas:

Business Consultancy | Manufacturing Industry | Technology | Sales | Pharmaceutical Industry + Healthworld | Medical Technology | Automotive | FMCG | Scientific Institutions


  • enthusiasm to work with people
  • individual advice
  • straightforward communication at eye level
  • visionary thinking
  • entrepreneurial mindset
  • above-average enthusiasm
  • competence and professionalism in action
  • Hands-on mentality
  • excellent network on all sides and hierarchy levels

His motto: “Don’t just aspire to make a living, aspire to make a difference“