Meet Our Leaders

At GLOBAL Service Titan, our success was built on good relationships and trust. With respect, humility, and integrity as our core values, our leadership can make decisions that best address our client’s needs, while still reflecting the mission of GLOBAL Service Titan.

Justin O'Brien

Founder | President/CEO

Justin O’Brien founded Global Service Titan, LLC and is responsible for the overall business development, company strategy, and growth. With over 20 years of experience in the Construction and HVAC industry, Mr. O’Brien has been involved in all aspects of projects from installation, commissioning, operation & maintenance, and replacement of HVAC systems.

Mr. O’Brien has the keen ability to successfully manage teams, find efficient solutions, and is an expert at problem solving and processes. His knowledge and expertise working in 50+ countries, with multiple clients and disciplines across the industry, has allowed Mr. O’Brien to successfully manage some of the most complex construction projects.

Timothy Bunk

Technical Director

Timothy Bunk is the Technical Director at Global Service Titan, LLC and is responsible for the operations of the service department, providing technical support, developing maintenance programs. Mr. Bunk has over 25 years of experience in the HVAC and construction industry and has been involved with commissioning, startup, maintenance, and repair of HVAC systems.

Mr. Bunk has worked on projects around the world and has a vast knowledge of HVAC systems, troubleshooting, and operation. His experience allows him to provide the highest level of technical support for our Customers and Employees.


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Trust our experience!

Our success was built on good relationships and trust.