Simpson Gumpertz & Heger Inc.

Simpson Gumpertz & Heger Inc., a for-profit national engineering firm headquartered in Waltham, Massachusetts, delivers structural engineering, geotechnical assessment, forensic investigation, and building-science consulting services to federal agencies as a prime contractor (79% of recent awards) and as a subcontractor to larger defense and infrastructure primes. The firm competes full-and-open across its federal portfolio with no set-aside designations; it operates across both civilian infrastructure and defense markets with particular depth in structural assessment, LNG facility engineering, and expert witness services.

Simpson Gumpertz & Heger's customer base is diffuse. The top five agencies by award count—Department of Homeland Security US Coast Guard (13 awards), Department of the Army (8 awards), Smithsonian Institution (7 awards), Department of Energy National Nuclear Security Administration (5 awards), and National Gallery of Art (3 awards)—represent only 34% of the total award count, reflecting a broad distribution across 38 distinct federal customer agencies. Dollar concentration differs markedly: Defense Logistics Agency Energy ($2 million potential value), Federal Energy Regulatory Commission ($1.9 million), and National Gallery of Art ($1.5 million) lead the potential-value rankings, accounting for 35% of combined potential value. Recent capability highlights include a $5.56 million purchase order from U.S. Pacific Air Forces for rapid non-invasive spalling assessments at Kadena Air Base (completed January 2025); a $2.02 million firm-fixed-price assessment contract with Defense Logistics Agency Energy for Red Hill infrastructure evaluation (January–April 2022); a $451.6 thousand desk study for the United States Trade and Development Agency evaluating natural gas and refining infrastructure investments across the Middle East, North Africa, Europe, and Eurasia region (awarded September 2025, completion September 2027); and a $99.8 thousand BPA call from Federal Energy Regulatory Commission for geotechnical and structural document review of LNG facilities (awarded June 2026).

Simpson Gumpertz & Heger holds a multiple-award Blanket Purchase Agreement with the Federal Energy Regulatory Commission valued at $1.76 million through September 2030 for civil geotechnical and structural consulting on LNG facilities, representing a follow-on award requiring 15 years of professional experience and current professional engineering registration. The firm places additional work under five other IDIQs, including agreements with the US Coast Guard and the Department of the Army. Award activity has grown from one award in 2022 to thirteen in 2025, though the magnitude of obligated dollars ($24.2 million) exceeds potential value ($17.3 million), reflecting contract modifications and period-option exercises. Only three awards face ultimate completion in the next twenty-four months (combined potential value $973 thousand), creating limited near-term recompete exposure.

Simpson Gumpertz & Heger operates predominantly as a prime (79% of awards) but carries active subcontractor relationships with major defense and infrastructure primes. Recent subcontract work includes seismic design and structural consulting for Los Alamos National Laboratory under Triad National Security LLC (multiple awards from June 2025 through February 2026); parking garage structural repair design under Centennial Contractors Enterprises Inc. (Fort Benning, Georgia, December 2025); seismic design peer review for missile field power redundancy at Fort Greely, Alaska under Asrc Prime Constructors LLC (September 2025); roofing and facility design work under Burns & McDonnell Engineering Company Inc. and HDR Architecture Inc.; and technical and engineering services for radar systems and submarine work under Raytheon Company and Electric Boat Corporation. Across SCI-reportable prime service contracts, the firm reported zero invoiced revenue in FY2024, with minimal FTE engagement—0.7 FTEs in FY2022 and 0.3 FTEs in FY2024—indicating that SCI-captured work represents a narrow slice of the firm's federal services footprint; the firm's federal business is driven by project-based engineering and expert-witness engagements outside the SCI reporting threshold. Simpson Gumpertz & Heger also receives grant sub-awards—including participation in a Northeastern University research initiative on nonlinear dynamic analysis and fire analysis of hybrid steel and timber structural systems (June 2023)—positioning it as a design industry partner in university-led research.