OUR TEAM


For the majority of the projects our most experienced project manager Rajesh Kapileshwari, PE, LEED AP leads a team of two design professionals - Cesar Gonzalez, PE and Guillermo Quintanilla. Porfirio Mireles and Chris Garza provide engineering design and BIM services. Jesus Martinez and Ryan Gilnack assist as MEP designers. Diane Looper is in charge of document control and accounting. This team has worked together for about 10 years, and has successfully completed over 500 projects. For resumes of the rest of the staff, please contact our office.

Rajesh Kapileshwari, P.E.

LEED AP Principal, Quality Control, Mechanical Engineer

(956) 230-3435


Rajesh has over 20 years of experience managing complex and diverse MEP projects. As a principal at Ethos, he is responsible for system concepts and quality control for all projects. His main focus is energy efficiency and sustainability design.

With a graduate degree in thermodynamics and thermal fluid systems, Rajesh specialized in design of thermal plants, thermal energy storage (TES), and renewable energy technology, and energy conservation projects. He performs energy analysis, commissioning (CX), and retro-CX. He also has expertise in designing high performance buildings.

Rajesh earned his LEED Accredited Professional certification in 2004, his first LEED project 'The Austin City Hall' was awarded LEED Gold, and several of his projects have been awarded LEED and Energy Star Building Certifications. In the Valley market, Rajesh honed his skills, designing comfortable, sustainable facilities that are both cost effective and easy to maintain.

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Guillermo Quintanilla

Project Management & Electrical Design

(956) 230-3435


Guillermo has over 25 years of experience in the electrical field; including design and specification of lighting and electrical systems for higher education, K12, sports facilities, office buildings, commercial, and industrial projects. He designed and specified emergency power, telecommunications, security, and fire projection systems for commercial and institutional projects.

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Cesar A. Gonzalez, P.E.

Principal, Mechanical Engineer

(956) 230-3435


Cesar has over 10 years of experience in the Engineering Design of Mechanical, Electrical, and Plumbing Systems serving educational facilities such as Community Colleges, Universities, and K-12 Schools. Among other skills, he specializes in the engineering construction coordination and commissioning.

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