John Slagboom

John Slagboom is an accomplished professional with extensive experience in construction management, quality assurance, and welding technology. Currently serving as CEO/President of GISS Projekt Services GmbH and GISS Projects Consultancy LLC, John provides expertise in construction and project management, quality management, personnel management, and business consultancy. Previous roles include Construction Manager and Quality Management positions with Eng.Co Group and Verwater Group B.V., as well as Lead Piping Engineer at BP and Coordinator for the TAR 2021 at Mineralölraffinerie Oberrhein GmbH. Education includes a Lean Six Sigma Black Belt from SixSigmaVersity, an Engineer’s Degree (CSWIP), and diplomas in Specialized Sales and Welding Engineering Technology, showcasing a strong background in both technical and management disciplines.