Executive Management Team

The HSC Executive Team’s ultimate goal is absolute client success; this philosophy starts with top management and filters through all levels of the organization.

Jim VinerJames Viner
President & CEO

As President & CEO, Jim Viner guides HSC’s strategic initiatives while collaborating closely with the executive team. He ensures that clients receive quality service through The HSC Way. Jim operates with a hands-on approach connecting directly with owners and clients to help achieve their vision. He firmly believes that a client’s success must come first, and only then will HSC’s success follow. This collaboration has proven to be the cornerstone to HSC’s repeat business.

Keeping HSC innovative is reflected in Jim’s staff. They are subject matter experts who have the necessary balance of technical expertise and emotional intelligence. Jim is committed to continued staff development through company-wide training programs and targeted skills training.

Jim has been employed at HSC Builders since 1998 with over 30 years’ experience in healthcare, higher education, and life sciences construction management. Jim holds a Bachelor of Science degree from Lafayette College.

mark heim CEOMark Heim, P.E.
Chairman of Board

As Chairman of Board, Mark Heim, P.E., acts in an advisory role to HSC by offering a perspective on strategic initiatives. Together with Jim Viner, Mark has helped the firm embark on significant business endeavors. The collaboration between the two remains an integral part of HSC’s future.

Mark began his career managing heavy civil projects throughout the United States before joining HSC in 1989. After serving as President for 11 years, Mark became Chief Executive Officer in 2011 and then advanced to Chairman of Board in 2017. Mark holds a Bachelor of Science degree in Construction Engineering from Spring Garden College and is a registered engineer in Pennsylvania, North Carolina and Maine. Mark was previously named “Executive of the Year” by Construction Financial Management Association of Philadelphia and was at the helm when HSC was recognized three times as the Construction Manager of the Year by the Subcontractors Association of Delaware Valley.

Brian Hammond
Vice President

Brian has been in the construction industry since 1993. He received his Bachelor of Science degree in Construction Management from the University of Florida and is a LEED® accredited professional. He has successfully managed new and complex renovation projects ranging from $1 million to $200 million.

As the Vice President, Brian oversees project management and all field operations. He is a key team member during the early project planning stages through bid/award and is actively involved on the jobsite throughout construction. Brian’s effective management of the team enables the projects to run smoothly. With a proven track record, Brian knows what it takes to guide a successful project—excellent communication with the client and subs ensures that projects meet both schedules and budgets; he consistently exceeds the client’s goals.

Vikki Grinnan
Chief Financial Officer

Vikki Grinnan has served in many financial roles from small to large construction firms including Director of Project Accounting, Controller, and Chief Financial Officer. During her many years in the construction industry, she has developed internal and financial controls while managing all project accounting and cost control functions. As the construction industry continues to change, a priority is staying innovative by continuously adapting the Finance Department’s procedures and implementing new innovative tools to improve productivity.

As HSC’s Chief Financial Officer for the past 13 years, Vikki provides leadership and oversight of the Construction Accounting Department, Human Resource Department, and all finance operations including the SDI and Captive Insurance programs. She has transitioned the company’s job cost accounting system to a wholly integrated business and financial information system. The additional software provides insight and information to all departments.

She formerly served as Vice President of the Philadelphia Chapter of the Construction Financial Managers Association (CFMA) and as Chairperson of the Programming Committee. Vikki remains active with CFMA by serving in a two-year Board position, developing CFMA continuing educational programs, being a guest speaker, and serving as a Programing Committee member. Vikki is a graduate of Rosemont College earning a Bachelor of Business Management degree.


Brian Ford
Director of Preconstruction

Brian Ford’s construction career began in 1988 working on many technically complex facilities in the healthcare and bio-pharma industries including R&D labs, process installations, and clean rooms. In his role as Director of Preconstruction, he manages design review, project budgets and value engineering services. Additionally, he has extensive experience in estimating and cost control ranging from conceptual estimates and cost model preparation to quantity take-offs, bid package estimates and GMP estimates. Brian knows the pulse of the marketplace and is adaptable to its changes. This trait helps him prepare life cycle cost studies, value engineering studies and document reviews for constructability giving the client the best path to fulfill their vision. Brian knows that the success of a project is built on a clear understanding of the client’s needs in terms of budget and schedule. He works closely with the client to learn their unique set of goals and uncovers what they deem as a successful project. Brian has a Bachelor of Science degree in Construction Management from Spring Garden College.

Bill GravesBill Graves
Healthcare & Higher Education Group Leader

As Group Leader, Bill has more than 30 years of experience managing complex renovations and new construction projects for academic, healthcare, and high-end corporate facilities. Through his proven leadership, Bill successfully fosters collaborative working relationships among the owner, design team, and trade contractors. He has built long lasting relationships; people who work with Bill, trust him. Bill’s clients include major healthcare facilities and universities. He delivers projects through all contracting methods including Design-Build, Construction Management at Risk, and Integrated Project Delivery. Bill practices “Continuous Improvement” to raise the bar and enhance deliverables to his clients on every project. He is HSC’s in-house Chairperson for Lean initiatives. Bill is actively engaged in the development of HSC’s project managers and staff so that they are empowered to deliver The HSC Way.

Ryan Kairis, CBCP
Life Sciences Group Leader

Ryan Kairis is HSC Builders’ biotech-pharmaceutical resident expert with over 18 years of construction management experience. Additional experience includes medical device, high rise and higher education projects. Ryan’s clients include small startup organizations to large corporate entities.  Ryan’s project experience ranges from $100,000 to $150 million. He has significant experience with research and development facilities, vivaria, central utility plants, GMP manufacturing & packaging, GMP warehousing and biopharmaceutical pilot plants. He also has significant experience with developing and executing commissioning master plans, pre-functional test protocols and functional test protocols.

Ryan achieved the Certified Building Commissioning Professional (CBCP) accreditation. His education includes a B.S. in Civil Engineering from Drexel University. Ryan is a LEED® Green Associate and member of the United States Green Building Council (USGBC). Additionally, he is a member of the International Society of Pharmaceutical Engineers (ISPE) and serves on the ISPE marketing committee.

Jennifer Biro
Director of Business Development

Jennifer is responsible for helping to build the right team for the right project. She builds upon the HSC project team’s strengths to ensure consistency throughout the preconstruction and construction processes. During the course of a project, she monitors the effectiveness of our team and maintains channels of communication at an executive level. Jennifer highlights HSC’s focus and commitment toward our clients and customer service. She provides strategic evaluations of growth opportunities in our various niches. Jennifer has an expertise covering all pharmaceutical and biotech areas including pilot plants, process, OSD (Oral Solid Dosage), API (Active Pharmaceutical Ingredient), fill finish, R&D, and all other support and enabling activities. Further, she has worked closely with all types of clients, as well as architects and engineers to ensure successful projects.

Kim Esposito, CRIS
Risk & Safety Manager

As Safety & Risk Manager, Kim utilizes her diverse background in overseeing the risk management function. She has the legal, insurance, financial, and safety expertise necessary when considering the many facets of risk. Her responsibilities include Jobsite Safety, Property & Casualty, Contractual Risk Transfer, OSHA Guidelines, Strategic Planning, Indemnification, Contract Negotiations and Claims Management. Kim proactively works with each project team to develop a risk profile for each project which ensures an OSHA-compliant worksite, identifies specific training needs, validates compliance with owner’s contractual requirements, and fully integrates with a client’s health & safety programs.

Kim’s education and affiliation includes a B.S. degree in Accounting and President of Mid Atlantic Construction Safety Council. She is an accredited Construction Risk and Insurance Specialist (CRIS) maintaining this designation through required annual courses. Additionally, she has a Contract Management certificate from Villanova University, OHSA 30 training and First Aid CPR/AED.