Leaders in Lighting

We are a team of former NASA scientists, physicists, biologists, engineers, designers and business leaders with more than 50 years of collective experience in lighting technology. We are passionate about developing lighting solutions that complement human life. With cutting-edge research and industry leading innovations, the BIOS team is pioneering a new era of lighting.

Meet The Team

Sean Tegart


An experienced global executive, Sean Tegart has participated and presented in numerous panels and events regarding business strategy, marketing trends and global expansion. Sean has worked with several Fortune 100 companies including Anheuser-Busch, Robert Bosch GmbH, Weber-Stephen Products and at equity-backed Lighting Science Group. He holds an MBA in Management, Strategy and Marketing from Northwestern’s Kellogg School of Management and a BSBA from the University of Denver. Passionate and pragmatic, Sean understands what it takes to create products and services benefiting the environment while also providing significant business-growth opportunities.

Robert Soler

VP Human Biological Technologies and Research

Robert Soler leads the Human Biological Technologies and Research at BIOS. Prior to his work with BIOS, his most prominent work was with Kennedy Space Center, where he helped design and build the first LED light for use on the International Space Station (ISS) and collaborated with scientists to use LED light for photo biological purposes in space. Robert’s years of experience as an electrical and lighting engineer have led him to become an inventor of 73 issued patents in the U.S. He has authored several published papers on light and its use for air and water disinfection and for human health benefits, with an emphasis on its use in spaceflight applications. After his work at NASA and before joining BIOS, he led the research team in the development of the ISS photobiologically corrected white light that is responsible for circadian entrainment of astronauts and the spectrally tunable adaptable light that manipulates spectrum based on its surrounding environment. He holds a Master of Science degree from the Lighting Research Center at Rensselaer Polytechnic Institute, the premier master’s level graduate degree offered in the lighting field and is finishing a PhD in Behavioral Neuroscience at the University of California, San Diego.

Erica Voss

Director of Circadian Design

After receiving her Bachelor of Architecture, Erica pursued a master’s Degree in Lighting from the Lighting Research Center at Rensselaer Polytechnic Institute where her master’s project focused on design and the biological impact of light on human health and well-being. Erica went on to work as an in-house Lighting Designer at NBBJ and then a Senior Lighting Designer for Fisher Marantz Stone in Seattle. Erica joined BIOS Lighting as the Director of Circadian Design to pursue her interest in circadian lighting design and healthy built environments. Her passion for design comes from the synthesis of light and architecture and the belief that lighting is fundamental to the quality of our built environments, having the ability to create meaningful spaces that positively impact our everyday experiences and overall quality of life. Professional associations include Illuminating Engineering Society and International Association of Lighting Designers Affiliate.

Eric Schafer

Senior Embedded Engineer

As a career technology engineer with more than 25 years of experience, Eric brings both technological know-how and leadership experience to the BIOS team. With experience working on a variety of projects, from home irrigation technology to cardiac output monitoring, Eric is adept at utilizing technology to improve human functionality. A veteran of Hardie Irrigation, CardioDynamics International, Cardiotronics, EESE and most recently, Signature Control Systems, Inc., Eric’s work includes three separate US patents. Eric is a graduate of Califronia State University, Long Beach, where he earned bachelor’s degrees in electrical engineering and biomedical/clinical engineering.

Ken Esterly

VP Sales

Ken brings years of experience in the LED lighting market to BIOS. Ken has worked at Ledra Brands as a Regional and National Sales Director and moved the company into the LED market as an early adopter with projects like the Madison Street Bridge in Chicago. Ken’s years of expertise in LEDs permitted him to present on topics such as LED Color Quality for Sustainable Design to Science and Application of Circadian Lighting. He holds a Degree in Business Administration in Management through the Elmhurst College Management Program and attended Keller Graduate School of Management of Devry University. He has been a Peer Mentor/Coach since 2017 for the Incubator Program at District 87 High School. He is an IES member. His passion for better lighting in our industry has allowed him to be in position to share this knowledge with Manufacturers and Specifiers.

William Coulter

Spectral Engineer

William received a B.S. in bioengineering from UCSD in 2017, specializing in neuroscience via research and his senior design research project where he simulated neurons in FPGAs. He also has research experience under Dr. Silva of UCSD working on retinal prosthetics to restore sight to the blind. At BIOS, William is responsible for product design and quality assurance as well as data collection and analysis for research initiatives. He spent months with Robert Soler simulating and mathematically optimizing the bios supplement spectrum, the most biologically potent white light its given CCT. It’s here he discovered his passion for metamers, colors (or lights) that are indistinguishable from one another and yet are made up of different wavelengths. We like to believe we see reality for how it is, and yet metamers stand in stark contrast to this paradigm. It’s for this reason he was determined to secure the CA custom license plate of “Metamer”.