Our team
The team that works hard to build your vision, faster.
Executive Leadership

Glenn VandeGrift
President & Founder
- 20 Years’ Experience
- ENR Top Young Professionals 2023 Winner

George Wiker
CEO & Founder
- 30 Years’ Experience
- 3M SF Designed
- 45+ Cell and Gene Facilities Designed

Brian Bennett
Executive Vice President
- 35 Years’ Experience
- 4K Projects Developed
- 1.6M SF of Cleanrooms Built

Nick Vermont
Chief Operating Officer
- 20 Years’ Experience
- 10K Projects Estimated
- 50B SF Estimated

Robert Griffith
Chief Strategy Officer
- Led cross-functional teams for compliance and site transformations
- Improved reliability and productivity in sterile pharmaceutical manufacturing
- Expert in FDA/cGMP standards, Lean Six Sigma, and operational excellence

Blake Williams
President of Manufacturing
- 20 Years’ Experience
- Led rapid execution of Pfizer COVID vaccine facility projects
- Managed expedited cleanroom projects for Amgen and Amplify Bio

Mike Wieffering
Vice President of Operations - CleanShield
- 43 years of full project‑lifecycle experience
- Specialist in design, build & installation of commercial/industrial HVAC & process systems
- Proven leader of large, critical, time‑sensitive projects with precision and efficiency

Bill Rieser
Vice President and General Counsel
- Super Lawyers Rising Star (2019–2021) & Super Lawyer (2022–2023)
- Represented clients in regulatory compliance, contract disputes & employment law
- Former Partner at The Gold Law Firm, P.C. (employment law, compliance & litigation)

Linda Springer
Vice-president of Finance
- 25 Years’ Experience
- Transformed financial operations across cleanroom companies
- Expert in strategic financial planning, budgeting & regulatory compliance

Sidney Gold
General Counsel
- 50 Years’ Experience
- Expert in PA & NJ employment and civil rights litigation, advising on Title VII, ADA, ADEA & FMLA compliance
- Fellow of the American Bar Foundation; AV‑rated; Super Lawyer (2004–present) & Best Lawyers (2009–present)

Ralph Melfi
Senior Advisory Board
- 35 Years’ Experience in Cleanrooms
- Oversaw $1.4B of Cleanroom Projects as Team Dev Leader
- Part of BD Team on 1st FDA-Approved CAR-T Cell Therapy

Maik Jornitz
Senior Advisory Board
- Published 150+ papers on bioprocessing and facility design
- Former CEO of G-CON, SVP at Sartorius
- Expert trainer in single-use bioprocessing and cleanroom infrastructure
Our clients
These companies trusted us to build their vision