Calvert Systems Engineering, Inc.

Calvert Systems Engineering, Inc., doing business as Calvert Systems, is a service-disabled veteran-owned small business (SDVOSB) and veteran-owned small business (VOSB) prime contractor based in Bellevue, Nebraska, that delivers specialized engineering, technical operations, and program support to the Department of Defense and intelligence community as both a prime contractor (66% of recent awards) and a subcontractor. The company holds positions on two OASIS+ GSA vehicles (OASIS+SB and OASIS+DV), a $4 billion Navy SEAPORT-NXG IDIQ, and the Air Force BIG SAFARI Basic Ordering Agreement, and operates a GSA Multiple Award Schedule contract under SIN 541330ENG (Engineering Services) with 38 labor categories spanning $55.49 to $193.60 per hour across security-cleared engineering, program management, and intelligence analyst roles.

Calvert Systems' customer concentration is heavily weighted toward Air Force Materiel Command. The Department of the Air Force Materiel Command Aeronautical Systems Center anchors the portfolio with 10 awards carrying $176.8 million in combined potential value, followed by the Department of the Navy Naval Sea Systems Command with 2 awards totaling $4 billion in potential value (driven by the SEAPORT-NXG IDIQ seat awarded January 2025). The Defense Information Systems Agency holds 4 awards valued at $141.8 million. The Air Force broadly (including Air Combat Command) accounts for multiple awards across the top-five customer set, which covers 100% of combined potential value. The Navy's SEAPORT-NXG IDIQ represents the largest single vehicle by ceiling value; recent Air Force delivery orders under BIG SAFARI and OASIS+ vehicles drive recurring work in specialized aircraft support and electromagnetic warfare operations.

Representative prime work includes three delivery orders under the BIG SAFARI Basic Ordering Agreement ($50 million ceiling running through March 2029): a $16.3 million firm fixed-price order (April 2024, completed March 2025) for Sensitive Compartmented Information Facility administration and spectrum tool operations invoiced at $8.1 million across 31.9 FTEs in FY2024 at $122.28 per hour; a $19.9 million order (April 2025, completing March 2026) for specialized engineering and technical operations support; and a $22.4 million order (April 2026, completing March 2027) for advisory and assistance services. A $9.6 million level-of-effort delivery order under OASIS+SB (issued September 2025, completing August 2030) directs Calvert Systems to deliver electromagnetic warfare and electromagnetic spectrum support to Air Combat Command at a facility in Hampton, Virginia. Calvert Systems also holds a $4 billion Navy SEAPORT-NXG IDIQ awarded January 2025 with performance through January 2029, with an initial minimum-guarantee task order of $500, positioning the vendor to compete for future Navy technical and engineering work across management, research and development, and logistics domains.

Activity has grown substantially from one award in 2022 to nine in 2025, with two awards recorded in 2026. One award (the $22.4 million BIG SAFARI delivery order) reaches ultimate completion within the next twenty-four months and faces recompete exposure. Across SCI-reportable service contracts, Calvert Systems invoiced $8.1 million in FY2024 as a prime, delivering approximately 31.9 FTEs at a derived government-paid rate of $122.28 per hour with zero sub-hours reported, indicating full self-performance on that contract. The company's FTE footprint across SCI records grew from 8.5 FTEs in FY2022 to 46.5 FTEs in FY2024, driven primarily by subcontractor engagement under six sub-award records. As a subcontractor, Calvert Systems delivers campaign modeling and emerging technology support to Client/Server Software Solutions Inc. (J81 campaign modeling work in 2025 and 2026), survivable airborne operations center services to Sierra Nevada Company under two sub-awards (May and December 2024), nuclear command, control, and communication mission support to Client/Server Software Solutions Inc. (June 2025), spectrum management services to Peraton Inc. (March 2025), Space Force equipment services to World Wide Technology LLC (April 2025), and aviation logistics and cyber security infrastructure work to KBR Wyle Services LLC (December 2024 and prior years). The sub-award footprint reflects heavy integration with Tier-1 defense primes (Sierra Nevada, Peraton, KBR Wyle) across Air Force, Navy, and joint combatant command programs. Calvert Systems self-performs across its prime work, with no subcontractors reported on BIG SAFARI or OASIS+ task orders, signaling a capability-rich, organic workforce model aligned with the specialized engineering, SCI facility operations, and spectrum management domains that anchor its market position.