Jobs at Stennis Space Center Mississippi in 2026
Stennis Space Center is where NASA tests the engines that send things to space. Every RS-25 engine that powers the Space Launch System, every engine destined for Artemis lunar missions, gets fired at Stennis before it flies. The center sits on 13,800 acres of buffer zone in Hancock County, Mississippi, and the low cost of living makes it one of the best-kept salary arbitrage opportunities in the space industry.
What Stennis Space Center does
Stennis is NASA's largest propulsion test facility. Its primary mission is testing rocket engines and stages, a role it has held since the Saturn V era when the facility was built specifically for Apollo.
The center's major test complexes include the A-Test Complex (large engine and stage testing), the B-Test Complex (component and smaller engine testing), and the E-Test Complex (smaller scale and developmental testing). The A-1 and A-2 test stands can handle full-duration firings of the SLS core stage with four RS-25 engines, producing over 2 million pounds of thrust.
Beyond propulsion testing, Stennis hosts over 30 federal and commercial tenant organizations, making it one of the most diverse federal installations in the country. The Navy's Oceanographic Office, the EPA's Gulf of Mexico Program, NOAA, the Army Corps of Engineers, and several defense intelligence agencies all have offices at Stennis.
| Facility | Purpose | Key Programs |
|---|---|---|
| A-1 Test Stand | Core stage testing | SLS, Artemis |
| A-2 Test Stand | Single engine testing | RS-25, developmental engines |
| B-1/B-2 Test Stand | Component and subscale | Engine components, injectors |
| E-1 Test Stand | Developmental/commercial | Commercial engine testing |
| Thad Cochran Test Stand | Large engine testing | RS-25 acceptance |
| Stennis Tech Park | Commercial tenants | Rolls-Royce, Relativity Space |
NASA civil servant positions
NASA employs roughly 300 civil servants at Stennis, with the majority working in propulsion testing, engineering management, and center administration. Stennis is one of NASA's smaller centers in terms of civil servant headcount, but the contractor workforce is substantial.
| Role | GS Grade | Salary Range (2026) | Typical Openings |
|---|---|---|---|
| Propulsion Test Engineer | GS-11 to GS-13 | $72,000 - $110,000 | 3-5/year |
| Mechanical Engineer | GS-11 to GS-13 | $72,000 - $110,000 | 2-4/year |
| Electronics/Electrical Engineer | GS-11 to GS-13 | $72,000 - $110,000 | 2-3/year |
| Safety Engineer | GS-11 to GS-12 | $72,000 - $95,000 | 1-2/year |
| Program Manager | GS-13 to GS-14 | $95,000 - $130,000 | 1-2/year |
| IT Specialist | GS-9 to GS-12 | $55,000 - $95,000 | 2-3/year |
| Administrative | GS-5 to GS-9 | $38,000 - $62,000 | 3-5/year |
Stennis locality pay is based on the "Rest of US" rate (around 16.97%), which is the lowest tier. This is the tradeoff: you earn less in absolute dollars than engineers at Johnson Space Center or JPL, but Mississippi's cost of living is among the lowest in the country.
A GS-12 Step 5 at Stennis earning approximately $88,000 has more purchasing power than a GS-12 Step 5 at Johnson Space Center earning $100,000 or at JPL earning $105,000. Median home prices in Hancock County run around $200,000-$250,000, and a 3-bedroom house that costs $500,000 near KSC or $800,000 near JPL goes for $220,000 near Stennis.
Major contractors and their roles
The contractor workforce at Stennis numbers around 3,500-4,000 people, dwarfing the civil servant headcount. These companies handle test operations, facility maintenance, engineering support, and instrumentation.
| Contractor | Role at Stennis | Typical Positions |
|---|---|---|
| Aerojet Rocketdyne (L3Harris) | RS-25 engine manufacturer | Propulsion engineers, test engineers, technicians |
| Syncom Space Technology | Test operations support | Test conductors, instrumentation engineers, technicians |
| Jacobs (ESSCA contract) | Engineering, science, and center ops | Systems engineers, safety engineers, facility engineers |
| ERC (Encompass) | Technical services | Data analysts, mechanical technicians, electrical technicians |
| SGT (Stinger Ghaffarian) | IT and engineering support | Software developers, network engineers |
| Relativity Space | Tenant - 3D printed rocket testing | Manufacturing engineers, test engineers |
| Rolls-Royce | Tenant - engine testing | Propulsion engineers, test technicians |
The ESSCA (Engineering, Science, and Center Analysis) contract is one of the largest at Stennis, typically held by Jacobs or a similar large services contractor. This single contract supports hundreds of positions across engineering disciplines.
What it's like to work at Stennis
Stennis is not a big city assignment. The center is located in rural Hancock County, Mississippi, about 45 minutes east of New Orleans and 60 minutes west of Gulfport/Biloxi. The nearest town is Bay St. Louis (population around 13,000), which has a pleasant historic downtown, waterfront restaurants, and a small but growing community.
Advantages:
- Extremely low cost of living (housing, food, everything)
- No state income tax on the first $5,000 of income (Mississippi has a low flat rate above that)
- Proximity to New Orleans for weekend culture, food, and entertainment
- Beach access along the Mississippi Gulf Coast
- Tight-knit professional community where everyone knows everyone
- Hands-on engine testing work that you won't find at a desk-job center
Disadvantages:
- Limited career advancement without relocating to another center
- Fewer restaurants, shops, and entertainment than metro areas
- Hurricane risk (the Gulf Coast takes direct hits periodically)
- Humidity that makes Houston seem dry by comparison
- Fewer networking and industry event opportunities than Huntsville or Houston
| Living Cost Factor | Stennis/Bay St. Louis | Houston, TX | Huntsville, AL |
|---|---|---|---|
| Median Home Price | ~$225,000 | ~$330,000 | ~$300,000 |
| 2BR Apartment Rent | ~$900 - $1,200 | ~$1,400 - $1,800 | ~$1,100 - $1,500 |
| Groceries | Below average | Average | Below average |
| State Income Tax | 4.7% (flat) | 0% | 5% (flat) |
| Commute to Center | 15-35 min | N/A | N/A |
Some Stennis employees live in the eastern suburbs of New Orleans (Slidell, Mandeville) and commute 40-50 minutes via I-10 and Highway 607. This gives you access to New Orleans restaurants, culture, and airport while working in a rural setting. It's a viable option if you need more urban amenities.
Engine testing careers: a unique specialization
Propulsion test engineering at Stennis is a specialty that doesn't exist at most NASA centers. If you work in engine testing, your skills transfer to a small number of facilities worldwide.
Test conductors run the actual engine firings. They manage the countdown sequence, monitor instrumentation, and make real-time decisions during tests. This role requires years of experience progressing from data analyst to test engineer to test conductor.
Instrumentation engineers design and maintain the sensors, transducers, and data acquisition systems that capture thousands of data channels during a test firing. Pressures, temperatures, flow rates, vibration, and thrust measurements all need to be accurate and reliable.
Propulsion test engineers analyze pre-test predictions, compare them to actual test data, and characterize engine performance. They work closely with the engine manufacturer (primarily Aerojet Rocketdyne for RS-25) to assess whether each engine meets flight acceptance criteria.
Facility engineers maintain the test stands, propellant systems, high-pressure gas systems, and control systems. These are complex industrial facilities that handle liquid hydrogen, liquid oxygen, and other cryogenic or hypergolic propellants.
The career path in test engineering typically looks like:
- Data analyst / Junior test engineer (0-3 years)
- Test engineer / Systems engineer (3-7 years)
- Senior test engineer / Test conductor (7-12 years)
- Test director / Section manager (12+ years)
How to apply
NASA positions: Search USAJobs.gov for "Stennis Space Center" or location "Hancock County, MS." NASA Pathways positions (internships and recent graduates) are posted seasonally and are the primary pipeline for new civil servants.
Contractor positions: Apply directly through company career pages. Syncom Space Technology, Jacobs, and ERC/Encompass are the primary employers. Search Zero G Talent's aerospace engineering jobs for current Stennis-area openings.
Tenant organizations: NOAA, Navy Oceanographic Office, and other tenants have their own hiring processes. Federal positions are on USAJobs; contractor positions are on the respective company sites.
For engineers interested in propulsion and engine testing work, Stennis offers hands-on experience that's hard to replicate anywhere else. The salary numbers look modest until you factor in the cost of living. Check NASA careers at Stennis or browse all aerospace positions on Zero G Talent.
Commercial tenants and future growth
Stennis is actively expanding its commercial tenant base. The center's test facilities are available to commercial rocket companies, and several have taken advantage:
Relativity Space leased test stand E-2 for testing its Aeon engines (used on Terran R). This brought new jobs and a younger workforce to the center. Relativity's presence at Stennis demonstrates the center's push to serve New Space companies alongside NASA.
Rolls-Royce operates engine testing at Stennis for its defense propulsion programs. This adds another employer to the local ecosystem.
Rocket Propulsion Test (RPT) program: NASA's RPT program manages Stennis's test infrastructure and makes it available to DoD, commercial, and academic customers. The program generates revenue for the center and sustains the test operations workforce even during gaps in NASA's own test schedules.
The 2026 outlook for Stennis is stable. RS-25 production and testing for SLS continues through the Artemis program, which is funded through at least Artemis V. The commercial tenant strategy adds diversification. And the center's role as the nation's primary propulsion test facility ensures long-term relevance regardless of which rockets are being developed.
For early-career engineers, Stennis offers something rare: the chance to work directly with rocket engine hardware in a location where your salary goes further than almost anywhere else in the space industry. The tradeoff is a rural setting with limited career advancement without eventual relocation. But for the first 5-10 years of a career, it's a strong launchpad.
FAQ
What is Stennis Space Center famous for?
Stennis Space Center is NASA's primary rocket propulsion test facility. Every engine powering the Space Launch System for Artemis missions is tested at Stennis. The center has been testing rocket engines since the 1960s, starting with the Saturn V engines for the Apollo program.
How many people work at Stennis Space Center?
The total workforce at Stennis is approximately 5,400 people across NASA civil servants (300), contractors (3,500-4,000), and tenant organization employees (~1,000-1,500). It's one of the largest employers in Hancock County.
Is Stennis Space Center hiring in 2026?
Yes. Stennis has ongoing hiring for both civil servant and contractor positions, particularly in propulsion testing, instrumentation, and facility engineering to support the SLS/Artemis program. RS-25 engine production and testing is a multi-year program that sustains steady demand for technical staff.
What is the cost of living near Stennis Space Center?
The Mississippi Gulf Coast and Hancock County have a cost of living roughly 15-20% below the national average. Median home prices are $200,000-$250,000, and rent is substantially cheaper than other NASA center locations. Combined with low state taxes, your NASA or contractor salary goes further here than almost anywhere else in the space industry.
Can I transfer to Stennis from another NASA center?
Yes. NASA civil servants can transfer between centers through internal job postings. Transfers to Stennis may involve a pay adjustment due to the lower locality rate, but the reduced cost of living typically more than compensates. Many engineers who want hands-on test experience seek Stennis assignments specifically for the propulsion testing opportunities.
