Top NSF engineering services contractors
In the 12 months ending Oct 5, 2026, the National Science Foundation obligated $16.2M in net prime contract dollars under NAICS 541330, down 1.2% from $16.4M in the preceding 12 months. 4 prime contractors received positive obligations, and 1 of them accounted for 80% of that spend.
Prime contracts funded by the National Science Foundation. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top NSF contractors for NAICS 541330
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Thornton Tomasetti, Inc. | $13.7M | $0 | 83.2% | New |
| 2 | QED Enterprises Inc. | $2.4M | $2.1M | 14.4% | — |
| 3 | JMS Naval Architects LLC | $344K | $0 | 2.1% | New |
| 4 | Jacobs Engineering Group Inc. | $47K | $315K | 0.3% | — |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Thornton Tomasetti, Inc.$0 → $13.7M (+$13.7M) · now #1
- JMS Naval Architects LLC$0 → $344K (+$344K) · now #3
- QED Enterprises Inc.$2.1M → $2.4M (+$313K) · now #2
Largest declines
- ICF Incorporated, L.L.C.$12.5M → $0 (−$12.5M) · no latest-period obligations
- Amaze Technologies LLC$1.5M → −$320K (−$1.8M) · no latest-period obligations
- Jacobs Engineering Group Inc.$315K → $47K (−$269K) · now #4
New to this market
2 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Thornton Tomasetti, Inc. | Mar 23, 2026 | $13.7M |
| JMS Naval Architects LLC | May 22, 2026 | $344K |
Where the money comes from
Funding sub-agencies within the National Science Foundation, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| National Science Foundation | $16.2M | $16.4M | Down $203K (1.2%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 49100423F0233 | Jacobs Engineering Group Inc. REALLOCATION OF FUNDS | $1.0M | Dec 31, 2026 |
| 49100423F0031 | QED Enterprises Inc. RESEARCH SUPPORT LOGISTICS (RSL) PROGRAM, MANAGEMENT SUPPORT SERVICES | $7.9M | Feb 28, 2027 |
| 49100426F0083 | Thornton Tomasetti, Inc. SAC PEAK MERCURY DRAINING EFFORTS | $3.1M | Mar 20, 2027 |
| 49100426F0159 | Thornton Tomasetti, Inc. SAC PEAK CONTROLLED DEMOLITION OF DST BUILDING TO REMEDIATE THE REMAINING MERCURY TRAPPED IN THE BUILDING. | $10.0M | Mar 23, 2027 |
Common questions
Who are the top NSF contractors for NAICS 541330?
In the latest 12 months, Thornton Tomasetti, Inc. ($13.7M), QED Enterprises Inc. ($2.4M), JMS Naval Architects LLC ($344K) received the most NSF obligations for engineering services.
How concentrated is this market?
The eight largest primes held 100.0% of positive obligations, and Thornton Tomasetti, Inc. alone held 83.2%. 2 contractors won their first obligations in this market during the latest 12 months.
Are any large NSF NAICS 541330 contracts ending soon?
4 of the largest awards in this market reach their current end date in the next 18 months. The first is 49100423F0233 (Jacobs Engineering Group Inc., $1.0M obligated), ending Dec 31, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$286.4MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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