Helping our customers in pursuit of developing new drugs that cure diseases, energy that is cleaner and chemicals that improve our lives


Quick Facts About RES

Our Start:   Founded in 2001, RES provides innovative technical solutions to high-value scientific & engineering problems for leading companies around the world in   pharmaceutical and energy & chemical industries.

Core Competencies:  Mechanistic modeling, based on deep domain knowledge in relevant sciences & engineering, combined with powerful computational technologies. Successful track-record of solving industrial problems through mechanistic modeling.

Key Accomplishments: Completed over 150 projects, Have nearly 100% repeat business, Built a global customer base of Fortune 500 companies


Leadership Team

Glen H. Ko, CEO

Since establishing RES Group in 2001, Glen has led RES Group to excel in delivering the highest value to the customer, building technological leadership and achieving excellence at every level of its operation. Glen started his career applying his technical training in reaction kinetics and engineering to develop, commercialize, improve and manage chemical plants around the world including ten years at Mitsubishi Chemical Company.  He is a recipient of 1967 Centennial Scholarship from NSERC of Canada, and graduate of Massachusetts Institute of Technology and University of British Columbia.

"Our mission is to continue delivering value and growing trust with the many world-leading companies that we have the privilege of calling our customers, while expanding our reach toward new and innovative areas utilizing our core competency of reaction engineering and kinetics. On behalf of all of us at RES Group, I would like to welcome you and thank you for the opportunity to work with you."

John Tolsma, Vice President

Since joining RES in 2003, John has led the simulation and optimization team in providing cutting-edge computation tools for all of RES' application areas.  Prior to to RES, John was a lead developer of the ABACUSS and DAEPACK projects at MIT. He received a Ph.D. from Massachusetts Institute of Technology and a B.S. from California State Polytechnic University, Pomona, both in Chemical Engineering.

"We strive to deliver cutting-edge technologies that are ready for use by our customers from day one.   The technologies we deliver, ranging from the advanced simulation and optimization tools for drug discovery to database of catalytic reactions for emission control, have been completed to the highest technical standard and proven to be practical for industrial use through extensive applications to solve industrial problems.”

Taeshin Park, Vice President

Since RES Group’s establishment in 2001, Taeshin has led project teams in delivering successful results through technical innovation and excellence in project management. Taeshin started his career at Mitsubishi Chemical Corporation applying his technical training in Process Systems Engineering.  He received his Ph.D. from Massachusetts Institute of Technology, and M.S. and B.S. from Seoul National University, both in Chemical Engineering. 

"We are driven to deliver success to our customers.  Our project team brings the experience to reliably evaluate the feasibility of meeting the project goal, as well as a full suite of technologies, expertise and workflow to deliver the results, and leadership to ensure project success."