Meet the team

The Hammertech team comprises the following.

Oktay Vandemir

Senior Multiphaser Specialist

Oktay joined Hammertech in 2019. Oktay has 35 years of experience in the oil and gas supplier industry as service engineer and service team manager.

Oktay started out as service Engineer at Exlog, working with service and maintenance of logging equipment for drilling and downhole operations. Later, Oktay has held positions as Service Department Manager in both Roxar Flow Measurement and Solberg & Andersen, before joining OneSubsea as Tender manager in 2011.

Oktay is handling installation and service in Hammertech.

Jan Yngve Vindenes

Senior prosjektingeniør

Jan Yngve joined Hammertech in 2019. Jan Yngve has more than 30 years of experience as mechanical engineer and project manager in the oil and gas industry.

In his early career he was engaged by Stord International and Prototech as a mechanical engineer involved in oil and gas projects. After joining Roxar Flow Measurement in 2001, Jan Yngve worked as project manager and later as manager of the project management team. He then joined Apply Sørco in 2011 as project team manager with responsibility for delivery of offshore modification projects in the North Sea.

With Hammertech, Jan Yngve will utilize his skills both as mechanical engineer and as project manager.

Erling Michelsen

Production and logistics responsible

Erling has more than 25 years of experience in production and logistics from Nera Networks in Bergen.

He has held positions within mechanical production, inspection, purchasing, warehouse management, planning and order management.

He also has 4 years’ experience in Oil & gas from Aibel AS as a Senior planner.

Finn Erik Mohn Berge

VP Sales

Finn Erik has an M.Eng. from UMIST, and an MBA Edinburg Business School, and joined Hammertech early 2018. At that time, Finn Erik held a position as Global Sales Manager at OneSubsea, a Schlumberger company. He has previously held positions as Global Commercial Manager and different positions within Product Management and R&D within Roxar Flow Measurement, an Emerson company. Finn Erik joins Hammertech as VP Sales and has the overall responsibility for sales and marketing in the company

Morten Brandt


Morten Brandt has a BSc from the Bergen Tech. College, and an MSc from the University of Bergen. He joined Fluenta AS in 1994, and held several positions within the multiphase metering activity in Fluenta/Roxar, until he joined Hammertech in 2012. His latest position in Roxar was as manager of the Multiphase Metering Centre of Excellence within Emerson, located in Bergen.

Sigmund Hjermann


Chartered Engineer (Siv.Ing.), Electrical and Electronics Engineering, North Dakota State University, 1986. Joined Hammertech in 2010. Before that, 15 years of experience from Oil and Gas industry from Christian Michelsen Research and Fluenta (now Roxar). 9 years of experience in telecom industry from Nera Networks.

Kristian Eckhoff

VP Research and Development

Kristian Eckhoff joined Hammertech in 2014 to strengthen our R&D activities. Kristian has 26 years of experience in R&D from Aanderaa Instruments, Gexcon, Roxar Flow Measurement, and Fluenta. Lately, Kristian joined Hammertech from Fluenta in 2014, after heading the R&D activities in a 5 year programme revitalizing the flare gas meter to a commercial success.

Andreas Haveland

Senior Multiphase Specialist

Andreas (BSc) has more than 15 years experience in multiphase metering as field engineer, development engineer and test engineer with Roxar Flow Measurement and OneSubsea.

Odd-Petter Kalsaas

Senior Multiphase Analyst

Odd-Petter (MSc) has more than 30 years experience from industrial R&D and product development from GECO (today Western Geco), Christian Michelsen Research, Fluenta and Roxar Flow Measurement. Odd-Petter joined Hammertech in 2015, and he has extensive industrial experience within multiphase metering particularly related to interpretation and processing of data from sensors applied in current multiphase meters.

Bjørn Aadland


Bjørn has an MBA from the Norwegian Business School in Bergen, Norway. He joined Hammertech early 2018. Bjørn has held several positions within Odfjell Drilling, such as VP ODT Engineering, Contracts and Marketing Manager and Business Controller. Prior to that, Bjørn worked for Ernst&Young as management consultant. In Hammertech, Bjørn is reposnible for corporate finances, as well as corporate quality management.