Jan Mooibroek
Director & Geotechnical Specialist
With more than 16 years of offshore industry experience, Jan brings extensive technical knowledge and leadership to complex construction, installation and geotechnical site investigation projects. As an accomplished operator of seabed, wireline, seismic and top-push cone penetration testing systems, he combines hands-on expertise with a practical, solution-focused approach.
Folkert Zuijderduijn
Geotechnical Specialist
Born into a family with deep roots in CPT, Folkert grew up around geotechnical testing and sampling, making the field second nature to him. He has built extensive hands-on experience across CPT, vibrocoring, drilling, FAT/SAT testing, supervision and client representation on major offshore and nearshore projects. Alongside his work as a social worker at home, Folkert brings strong people skills, practical technical knowledge and a genuine pride in continuing the family tradition within the geotechnical industry.
Robert van Dijken
Geotechnical Specialist
Robert brings over 19 years of geotechnical experience, with a strong background in offshore CPT, sampling, drilling and equipment systems. His expertise spans Geomil Manta, ORCA, Wison and AP van den Berg systems, supported by extensive knowledge of hydraulic and electronic equipment. Having worked as a lead operator, foreman, offshore manager and instructor, Robert combines deep technical knowledge with strong leadership and a practical, solution-driven approach to complex offshore geotechnical projects worldwide.
Robbin Lok
Geotechnical Specialist
Since 2019 Robbin has gathered extensive knowledge and knowhow operating Seabed CPT units as well as Down The Hole equipment. Having completed external hydraulic system maintenance and PS-logging training courses Robbin is proven to be an great team-member professionally as well as socially.
Rauten Hofsink
Geotechnical Specialist
With broad international offshore experience and a strong understanding of client expectations, Rauten brings a commercially focused approach to project delivery. He is skilled at building trusted relationships, coordinating between stakeholders and representing client interests throughout complex geotechnical campaigns. His professionalism, adaptability and clear communication make him a valuable link between clients, project teams and offshore operations.
Sabri Razak
Geotechnical Specialist
Sabri is a highly experienced Senior CPT Operator with 17 years of offshore geotechnical investigation experience, specialising in downhole and seabed CPT systems including AP van den Berg Wison/Roson and Geomil Orca/Manta. He has worked as both a Senior CPT Operator and Party Chief, supporting major offshore wind and oil & gas projects worldwide with strong hands-on experience in CPT, vibrocoring, piston coring and specialist geotechnical operations.
Jim Wongobe
Geotechnical Specialist
With a background in industrial engineering, Jim brings solid technical expertise to his role as a CPT Operator. Known for his honesty and strong work ethic, he consistently goes above and beyond expectations, making him a dependable and valued member of the team.
Ferry Endeveld
Geotechnical Specialist
With a strong military background, Ferry brings energy, discipline and a hands-on attitude to every project. His experience in leading teams, training personnel and maintaining high safety standards has transferred naturally into the offshore geotechnical industry, where he is known for his strong work ethic, clear communication and proactive approach.
Joaquim Romero
Geotechnical Specialist
Joaquim is a skilled geotechnical operator with experience across offshore, nearshore and onshore projects, specialising in CPT, vibrocoring and subsea soil sampling. He has hands-on experience with systems including Neptune 5000, Manta-200, Panther-130 and Rolatec CPTu, as well as Geo-Vibro Corer equipment. He combines practical field experience with equipment maintenance, troubleshooting, drilling support and a strong focus on safe and reliable offshore operations.
Sandeep Bandekar
Geotechnical Specialist
Sandeep is an experienced offshore geotechnical professional with a strong background in CPT, SCPT, vibrocoring, borehole drilling and geotechnical data interpretation across offshore wind and oil & gas projects. He combines hands-on technical expertise with project coordination, QA/QC and client-facing offshore leadership on major international projects.
Azlan Bin Awang
Geotechnical Specialist
With over 12 years of experience in the industry and a diploma in mechanical engineering, Azlan brings a wealth of knowledge and reliability to every project. Known for his strong work ethic and great sense of humour, he's not only a skilled technician but also a team player who lifts morale and gets the job done right.
Arsad Bin Isa
Geotechnical Specialist
Arsad brings 19 years of hands-on offshore geotechnical experience, with a strong background in CPT operations, equipment maintenance and technical troubleshooting. With a Diploma in Electrical Engineering, he combines practical offshore expertise with in-depth knowledge of systems including AP van den Berg Wison/Roson and Geomil Orca/Manta. Throughout his career, Arsad has supported major offshore energy and wind projects around the world, working closely with engineering and drilling teams to deliver safe, efficient and reliable geotechnical operations.
Trusted Industry Relationships
Over the years, Subsoilutions has built strong working relationships with leading organisations across the geotechnical, offshore survey and marine construction industries. Through these relationships, our specialists have supported projects involving advanced CPT systems, offshore site investigations and complex marine operations worldwide. From specialist equipment support to experienced project personnel, these relationships reflect the trust placed in Subsoilutions to provide practical expertise where it matters most.
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