Managing Partner & CEO
Rainer Nagel
+49 89 452249-400

Rainer Nagel is Managing Partner, Member of the Executive Board, co-founder of Atreus and one of the pioneers of interim management in Germany.

His focus is on projects and programs in the fields of IT transformations, value accretion and cost reduction, international projects and restructurings and the interim staffing of top-management positions. His activities are primarily concentrated in the fields of IT, telecommunications, mechanical engineering and plant construction, services and the consumer goods industry. Rainer Nagel has more than 25 years of experience in general management, sales and interim management and before founding Atreus he held several top-management and management board positions at leading consulting and high-tech companies, including Siemens AG.


  • Services
  • Consumer goods and retail
  • Private Equity
  • Steel, metal, plastic industry


  • Restructuring and turnaround
  • Insolvency-related restructuring
  • Pricing
  • Working Capital Management
  • Performance Improvement Programs
  • Program Management Office
  • Digitization of sales and marketing and of business models and business processes
  • International assignments
  • IT-Sourcing
  • IT-Carve-in and Carve-out
  • SAP, ERP and crisis projects
  • IT infrastructure rollout
  • Master-Data-Management


  • Managing Partner bei Boyden Interim Management
  • Mitglied der Geschäftsleitung Brainforce (Deutschland) GmbH
  • Mitglied des Vorstands und COO der BRAIN International AG
  • Mitglied des Management-Boards der Bereiche Cordless und Mobile Phones der Siemens AG
  • Mitglied der Geschäftsleitung Deutschland Siemens IT Services