Edward "Butch" M. Twining, Jr.
Co-Chief Executive Officer / Chairman of the Board
As the fourth generation of the Twining family to oversee the firm, Edward Twining, Jr. continues the company’s tradition of technical excellence and responsive service. He provides vision and leadership to the growth and development of the company. His focus is to instill his family tradition into the larger family of employees, to foster relationships with long-term clients and actively advance the growth of the company.
Robert M. Ryan, CWI-QC1, ASNT Level III
Chief Executive Officer / President
Robert M. Ryan has been a member of the Twining team since 1978. He oversees management practices and provides executive oversight to the leadership team. In his role, Mr. Ryan exploits his knowledge of both the technical and business aspects of Twining’s many endeavors. Mr. Ryan has extensive experience in all aspects of inspection, materials testing, and nondestructive testing. Mr. Ryan led Twining’s inspection personnel on some of Southern California’s most prominent projects. His expertise in steel construction, welding inspection, and nondestructive testing has made him a primary resource for the Southern California structural engineering community.
Boris Stein, DSc
Senior Vice President, Applied Engineering and Research
Dr. Boris Stein is a materials scientist, consulting engineer and educator with extensive experience in cementitious based materials, concrete technology and construction. Dr. Stein holds fifteens certificates on inventions and patents and is the author and coauthor of numerous technical publications and books. He has contributed to the development and implementation of special concretes for fast track construction and the rehabilitation of concrete pavements, concretes with industrial by-products and waste materials, processes of manufacturing of precast concrete, and more. Dr. Stein leads work performed by Twining in the areas of concrete technology, evaluation of materials for concrete, rigid pavements, investigation of concrete in existing structures, and engineering of cementitious based materials.
Linas Vitkus, PE, GE
Senior Vice President, Operations
Linas Vitkus, PE, GE, has been involved in construction projects throughout California for his entire professional career of over 19 years. Mr. Vitkus’ experience includes geotechnical subsurface investigations, forensic investigations, laboratory testing, materials inspection, and project management. Mr. Vitkus has acted as project manager, technical supervisor, or project executive for many of Twining’s most significant projects, including schools, universities, hospitals, and high rise structures. In addition, Mr. Vitkus provides guidance, leadership, and oversight of our other project managers and is responsible for corporate oversight of the operations of Twining’s network of offices/laboratories.
Senior Vice President, Strategic Growth
In her role as Senior Vice President of Strategic Growth, Talin Espinoza leads the company's M&A, branding, marketing, and sales operations. Talin specializes in revenue driven strategic growth facilitation and customized branding plan execution. She works closely with Twining ownership to develop and grow an industry-specific brand that holistically addresses the customer’s buying experience and seamlessly connect the customer to the company’s vision and voice. Talin is currently serving on the Board of Directors for the Association of General Contractors Los Angeles Chapter (AGC) and Construction Management Association of America Southern California Chapter (CMAA). Her work has been published in the PSMJ A/E Marketing Journal. Talin is a graduate of the Art Center College of Design in Pasadena.
Steven D. Schiffer
Vice President, Business Development
Steven D. Schiffer ensures the company's continued success through his business development efforts in a wide variety of markets including schools and universities, hospitals and healthcare facilities, arts and entertainment venues, industrial buildings, mixed-use developments and commercial construction.
Paul C. Soltis, PE, GE
Vice President, Geotechnical Operations
Paul C. Soltis, PE, GE, is a California Registered Civil and Geotechnical Engineer with over 25 years of total experience. Mr. Soltis oversees Twining's geotechnical division, and his experience includes geotechnical site investigations and evaluations, geotechnical design recommendations, construction oversight, and forensic evaluations for residential, public infrastructure and commercial projects.
Amy M. Owens, SPHR
Vice President, Human Resources
As the head of our human resources department, Amy Owens, SPHR, brings over 20 years of experience to Twining. She is responsible for the company’s organizational and employee development in support of Twining’s strategic goals. Her expertise includes business leadership, talent acquisition, employment practices, workforce planning, benefits & compensation, and employment relations.
Regional Client Service Director
Mariel Attento has more than 15 years of engineering sales and client service experience, specializing in both public and private sector projects. She deals exclusively in hard infrastructure and facilities, obtained via both traditional and alternative delivery methods. Backed by a strong track record of successfully developing relationships and understanding client needs, Mariel is leading the development of Northern California for Twining, Inc. and is responsible for new growth and increased market share.