About Us
Providing subsurface insight to researchers and industries using acoustic telemetry.
Who We Are
Located in Trondheim, Norway, Thelma Biotel has enabled underwater knowledge capture around the world for 20 years. With a close connection to the research community, we build tools that support better decisions in scientific studies, aquaculture and structural monitoring. We believe knowledge moves in waves, and our role is to help capture it, clearly and responsibly.
The Thelma Biotel Team
Meet our team – dedicated experts working together to deliver the best solutions and support you every step of the way.
Hanne Rygg
CEO
Hanne is an experienced leader with a proven track record in driving innovation, building high-performing teams, and bringing new technology to market. She combines over a decade of leadership in technology and business development with an MSc in Electric Power Engineering from NTNU.
Guttorm Lange
CCO
Guttorm holds an MSc in Aquaculture from NTNU and has worked in the crossing point of biology and technology his entire career.
Catrine Schulze
Head of Customer Success
Catrine holds an MSc in Natural Science from NTNU and has first-hand experience with acoustic telemetry study designs, complemented with a BSc in Biomarine Innovation.
Jørgen Holden
Production Manager
Jørgen has extensive experience spanning over ten years in production management. He has extensive experience in both electronics and mechanical production.
Eivind Brandsæter Hvam
Senior Key Expert
Eivind holds an MSc in Technical Cybernetics from NTNU and has over a decade of experience with development based on acoustic telemetry.
Maren Mommens
Key Account Manager
Maren holds a PhD in Biology and has over a decade of experience in fish reproduction and genetic research, specializing in marine fish species and salmonids.
Jørgen Nielsen Røhme
Key Account Manager
Jørgen holds an MSc in Natural Science from NTNU and has hands-on experience in both offshore and land-based salmon farming. He has experience from aquaculture technology and innovation and is driven by new and sustainable solutions.
Hilde Johannesen
Key Account Manager
Hilde holds an MSc in Marine Biology from UiB and has first-hand experience with acoustic telemetry study design and setup from her thesis.
Erlend V. Tisløv
Production Engineer
Erlend holds a BSc in Electrical engineering and has extensive experience with acoustic telemetry equipment.
Per Arne Kjelsvik
Software Engineer
Per Arne holds an MSc in Cybernetics and Robotics from NTNU and develops user friendly desktop and web software and applications for communication with Thelma Biotel devices.
Ruben Archer
Production Engineer
Ruben holds a BSc in Electrical engineering and has extensive experience with acoustic telemetry equipment.
Alexander Michael Ås
R&D Engineer
Alexander holds a MSc in Computer Science with a major in Artificial Intelligence from NTNU and a BSc in Business Administration and has several years of experience in both software and hardware engineering, data analysis as well as machine learning.
Our Vision - Waves of Knowledge
At Thelma Biotel, we work to enable safer and more just aquatic operations by turning subsurface data into meaningful knowledge.
Close Partnerships
We think knowledge is best created through close collaboration. That's why we aim to be a trusted partner in all relations. On the production end we partner with NORBIT, a global leader in tailored technology, to produce most of our tags locally – just an hour from our headquarters – combining world-class innovation with local craftsmanship.
Innovation with Purpose
We believe our technology should do more than track movementand behaviour — it should inspire understanding and stewardship. Our solutions are designed to provide deeper insights into aquatic ecosystems, empowering better decisions for their protection and long-term sustainability.
Our Journey So Far
1970s - 2000s | Research
Norwegian researchers Holand, Mohus, and Balchen began developing acoustic transmitters for fish and equipment for field studies in fisheries research. The technology and methods were continuously further developed at the independent research institute SINTEF and NTNU.
2002 | Thelma
Technology and methods from SINTEF, and the NTNU were commercialised under the name Thelma.
2008 | Start of Thelma Biotel
Thelma Biotel spun off as a separate company, with a sole focus on further development of wireless monitoring in the submerged environment.
2013 | Expandert produktportefølje
Thelma Biotel delivered the first digital acoustic receiver.
2018 | Gazelle Company
2021 | Expanded Portfolio
Thelma Biotel delivered the first digital receiver with a release module.
2022 | Team Expansion
The company now has a double-digit number of employees.