Stell SIA Salas O'brien LLC

Stell SIA Salas O'Brien LLC, doing business as S3, is a women-owned, economically disadvantaged women-owned, veteran-owned, and service-disabled veteran-owned joint venture small business headquartered in Mountlake Terrace, Washington, that delivers architect-engineer services, environmental consulting, facility assessments, and capital asset management to federal agencies primarily as a prime contractor (93% of recent awards). S3 competes across set-aside and full-and-open vehicles, with recurring SDVOSB and women-owned small business designations anchoring most of its higher-dollar work.

S3's award footprint is heavily concentrated in two customer buckets: the Department of Veterans Affairs Office of Construction and Facilities Management dominates by far, holding eight awards worth $900.8 million in combined potential value, while the Department of the Army Corps of Engineers Engineering District Mobile, NASA's Armstrong and Glenn Research Centers, and the National Institute of Standards and Technology account for the remaining material opportunity. The VA concentration is driven almost entirely by a single $300 million SDVOSB-set-aside indefinite delivery contract awarded September 23, 2025, for environmental, historic preservation, and sustainability advice and assistance with a performance period through March 17, 2031. This vehicle procures multi-disciplined teams of scientists, engineers, and technicians to support the VA's environmental compliance and sustainability initiatives, including hazardous materials inspection, remediation planning, and NEPA documentation. A second $249 million IDIQ with the Army Corps of Engineers for architect-engineer services supporting the Environmental Quality Program in the South Atlantic Division (awarded April 11, 2025, completion April 10, 2030) represents the second-largest pipeline item. Two additional NASA IDIQs awarded in 2025 to S3 provide $75 million each in ceiling capacity: one through Armstrong Flight Research Center for architect-engineer services across NASA's West Regional footprint (July 14, 2025, completion July 13, 2030), and one through Glenn Research Center covering the Eastern Region of NASA including Glenn, Goddard, Wallops, and Langley with architect-engineer and design-build support (August 1, 2025, completion July 31, 2028).

Recent delivery-order activity demonstrates S3's execution across these vehicles. NASA Glenn issued a $752,006 firm fixed-price task order on April 2, 2026, for preventive maintenance optimization of T-1 and T-2 equipment assets at NASA Ames Research Center in Mountain View, California, completion December 31, 2026. The same customer issued a $190,080 delivery order on April 3, 2026, for design and installation of a 480-volt backup generator system at Glenn's Building 12 Steam Plant in Cleveland, Ohio, with completion August 15, 2026. The VA issued two SDVOSB-set-aside delivery orders in September 2024 totaling approximately $835,000 for design-build procurement support and RFP development related to seismic upgrade and renovation projects at the VA Medical Center in American Lake, Washington (Building 111 and Building 9), both with completion dates of September 30, 2026. S3 also holds a single-award $8.3 million BPA with the National Institute of Standards and Technology for capital asset management services at the Gaithersburg, Maryland campus (awarded September 1, 2024, completion August 31, 2027), with two BPA call orders issued to date: a $76,945 SDVOSB-set-aside call for Builder SMS data hosting and Gordian support (October 1, 2024, completion September 30, 2025) and a $265,871 call for campus maintenance services (September 10, 2025, completion September 30, 2026).

S3 maintains seats on multiple government-wide vehicles: the OASIS+ Women-Owned Small Business IDIQ (GSA FAS, awarded June 12, 2025, no specified ceiling), the OASIS+ Service-Disabled Veteran-Owned Small Business IDIQ (GSA FAS, April 16, 2025, no specified ceiling), and the OASIS+ Total Small Business IDIQ (GSA FAS, April 15, 2025, no specified ceiling). The vendor also holds a $2 million GSA Multiple Award Schedule contract (awarded April 17, 2023, completion April 16, 2028) with thirteen labor categories spanning program management, engineering, scientific, and technical roles at hourly rates from $90.58 to $256.06 and education requirements from high school to bachelor's degree, with no security-cleared positions offered. Representatives include Program Manager at $256.06 per hour (13 years experience), Engineer at $160.41 per hour (7 years experience), and Junior Scientist at $103.58 per hour (1 year experience with bachelor's degree).

Award activity has grown sharply — four awards in 2023, six in 2024, sixteen in 2025, and two so far in 2026 — though the bulk of recent volume reflects large IDIQ awards rather than task-order volume. Combined potential value across all awards reaches $1.32 billion, but only $3.6 million has been obligated to date, reflecting the IDIQ-heavy portfolio and early stage of option-period utilization. Five awards with combined potential value of $2 million face ultimate completion within the next twenty-four months, presenting moderate recompete exposure. S3 operates as a subcontractor on a limited basis, performing engineering services for Jacobs Government Services Company on SMS Builder sustainment projects at Fort Carson, Colorado under Army Installation Management Command (two sub awards in 2023 and 2024). S3's capability focus — architect-engineer design and construction management, environmental compliance and remediation, facility condition assessment, and capital asset management — aligns tightly with its customer mix of facility-owning and infrastructure-dependent federal agencies.