Meet the Team

Meet Our Clean, Green Team

The success of Allied Universal® starts with attracting top talent who possess decades of expertise in the building maintenance industry, coupled with a reputation for providing outstanding, client focused vision. Our continued success is attributed further to the ongoing development and high retention of our management teams.


Mark Olivas, President

Mark_OlivasUnder Mark Olivas’ leadership, Allied Universal® Janitorial Services has cleaned over 75 million square feet of space in California and Arizona since 2008. As one of only four original staff members, Olivas helped build the janitorial business, formerly named Universal Building Maintenance, from start up to a profitable division with over $73 million in annual revenue.

捕鱼大亨手机版Olivas began his career in the janitorial industry after serving in the U.S. Army for more than eight years as a non-commissioned officer. When he returned 捕鱼大亨手机版 after Operation Desert Storm in 1991, he worked as an area supervisor for Commercial Building Maintenance, based in the City of Commerce, Calif., and then ISS, where he became one of the youngest Operations Managers in Los Angeles. He also was one of the youngest Branch Managers to work for ISS after the acquisition of Commercial Building Maintenance.

Olivas educated himself in all facets of the janitorial business and soon was promoted to West Coast Managing Director for the second largest janitorial company in the U.S. He is well regarded within the industry because of his experience within the high–rise market, office park complex, business improvement district and industrial office environments.

He is an active member of the Building Owners and Managers Association (BOMA) and International Real Estate Managers. He also has served on the Associate Leadership Council for BOMA in Los Angeles.

Jason Stapleton, Regional Vice President


Jason Stapleton began his career in 1994 at Universal City Walk, where he attained the position of Assistant General Manager. Stapleton left Property Management in 1996 to become the Project Manager for the Trans America Center in Los Angeles with International Service Systems (ISS/One Source). Stapleton was considered one of the brightest young talents within ISS and was soon promoted to Project Manager for one of the largest commercial high-rise office projects in Southern California, Wells Fargo Center, which set the foundation for his career in the service industry. Stapleton left ISS in 2000 to partner with another entrepreneur and started a non-union janitorial company based in Orange County. Stapleton returned to One Source in 2002 as the Project Manager for 601 South Figueroa, and was soon promoted to Operations Manager and then District Manager in 2004.

As the District Manager of the largest portfolio in California, Stapleton was responsible for over $18 million in annual revenues and served the largest landlord on the West Coast. He was instrumental in implementing and managing an extremely successful performance-based cleaning program that assisted in the sale of 90 percent of the entire Equity Office Portfolio in California. The program was a groundbreaking event in the Los Angeles cleaning industry and resulted in a 30 percent savings to his clients, while maintaining extremely high cleaning standards. As a result of this program’s success, Stapleton was sent to New York, New Jersey, and Long Island to train other operators in a program he launched with Mark Olivas. Stapleton attended both Glendale Community College and California State Northridge.

Rafael Sorto, Regional Vice President

rafael_sortoRafael Sorto has been in the janitorial industry for more than 30 years. During his tenure, he has acquired unsurpassed knowledge and experience in all aspects of the service industry. Truly beginning his career on the ground floor, Sorto learned the business as a day porter and was soon discovered as a true talent in the marketplace. Through education and experience, Sorto has held positions such as Area Manager, Operations Manager, Project Manager, District Manager, Director of Operations, Senior District Manager, and Vice President of Operations.


Sorto was employed by ISS/OneSource for more than 20 years and was involved in the acquisitions of Benco, Flagship Doral, Commercial Cleaning, Ogden Allied, and UBM. He then moved to DMS Facility Services in 2000 as Vice President of Operations for the Orange County and Inland Empire areas. Sorto has a great rapport with the union’s leadership and has been involved in all of the contract negotiations for Orange County. Sorto is an active member of BOMA, IREM, and IFMA. He has served on the board of Casita de San Jose, as Assistant Coach of Basketball (NJB), and as Scoutmaster for the Boy Scouts of America. He holds degrees in Information Systems, Paralegal Studies, and Spanish. He continues to pursue his MBA.


Devin Samaha, Vice President of Sales

d_samaha捕鱼大亨手机版Devin Samaha has been with Universal Building Maintenance since the relaunch of the janitorial division in January 2008. Prior to joining the UBM Executive Team, Devin was first exposed to the janitorial industry when he worked for Waxie Sanitary Supply, one of the Nation’s leading janitorial supply companies. The training he received at Waxie has been a great benefit to his career at UBM. At Waxie, he trained janitors, executive housekeepers for major hotels, and maintenance contractors on proper cleaning techniques, proper use of cleaning chemicals and the use of all cleaning equipment. Devin furthered his career when he joined Collins and Aikman Floorcoverings, where he sold commercial carpet to property managers, architecture and design firms, and direct to end users focusing on the commercial office space vertical market. This is where he was first exposed to Leadership in Energy and Environmental Design, better known as LEED. Since C&A leads the carpet industry in environmental sustainability, he was provided extensive training in “green” practices. Devin then left C&A to join the Commercial Real Estate industry, where he worked for a business bank and helped business owner’s secure financing for the purchase of their office buildings. Devin worked in this industry for next eight years until joining the UBM Executive team.

Devin holds a bachelor’s degree in Business Administration from the University of San Diego, where he played soccer for four years, earning a trip to the NCAA Division I “Sweet Sixteen” his senior year.


Michelle Bresnahan, LEED AP, Arizona Regional Vice President of Operations

michelle_bresnahanMichelle Bresnahan started her career in the janitorial industry at the age of 18 as a Project Manager for a large industrial facility, and she has now been in the industry for more than 14 years. After her start in project management, she worked her way up to Operations Manager, overseeing many different types of facilities, including office, medical, and retail. After completing her B.A. at University of Michigan in 2006, Bresnahan accepted a position in Arizona as Account Executive for Service Link Commercial. In 2008, she was promoted to Vice President and has continued to apply her hands-on experience in managing cleaning systems. She also became a LEED AP in 2008, and she uses this designation to create successful green and day cleaning programs, as well as contribute to LEED projects for her clients.





Craig DeMartini - Regional Vice President Northern California

Craig DeMartini - Regional Vice President Northern CaliforniaMr. DeMartini is a native of the Bay Area and currently lives in the North Bay.  He graduated from Sonoma State University acquiring a degree in Business with a concentration in management.  He got his start in the janitorial business immediately out of college with Able Services.  He started at the ground floor working as a janitor, floor tech, and foreman to get hands on experience and an appreciation for what janitors do on a daily/nightly basis.  After the extensive on hands training he completed, he was fortunate enough to manage some of the most prestigious properties in the Bay Area as a Project Manager.  Over the next 12 years, he worked his way up to the Regional Operations Manager position for the San Francisco and North Bay regions by building lasting relationships with clients, being fair and transparent, and providing support and care for every account I managed.  Craig joined the Allied Universal® team in October of 2018 as the Regional Vice President for Northern California.