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Mechanical Engineer Salary in Defense Contracting

Defense pays mechanical engineers a median of $110,500 per year, with security clearance adding $5,000 to $30,000 in premium depending on tier. The sector employs 19,600 MEs across the major primes (Lockheed, RTX, Northrop, GD, BAE, L3Harris) and a long tail of subcontractors.

Data as of May 2026, sourced from BLS OES May 2024 (SOC 17-2141).

Defense Median

$110,500

vs national $102,320 (+8.0%)

Defense Employment

19,600

MEs across major primes

TS/SCI Premium

+$15K - $30K

over unclearcred base

A flatter, more stable pay curve than commercial

The Bureau of Labor Statistics Occupational Employment and Wage Statistics tables for SOC 17-2141 within NAICS 33641 (guided missile and space vehicle manufacturing) and related defense subindustries, May 2024 release, report a defense mechanical engineer median of $110,500 and mean of $112,300 for roughly 19,600 employed engineers across the major primes.

Defense pay sits 8.0 percent above the national ME median and 9.0 percent above the national mean. The premium is real but smaller than commercial hardware tech (Apple, Google, Tesla pay senior MEs $150,000+ base with much larger RSU). The defense compensation curve is flatter and more predictable: entry levels start in the $68,000 to $84,000 range, senior ICs cap around $145,000 to $160,000 base, and principal engineers reach $175,000 to $195,000 base. Total compensation at the largest primes adds 10 to 25 percent in RSU and annual bonus, but rarely doubles base the way RSU does at FAANG hardware.

Per-prime pay bands

Prime	Median Base	Total Employees	Programs and Notes
Lockheed Martin	$116,000	122,000	F-35, missile defense, satellites. Largest US defense prime. Strong pension, RSU program.
Raytheon Technologies (RTX)	$113,500	185,000	Missiles, radars, jet engines (Pratt and Whitney). Combined Raytheon + UTC entity. RSU program plus bonus.
Northrop Grumman	$115,200	100,000	B-21 Raider, NGI missile interceptor, autonomous systems. Strong RSU and bonus on classified programs.
General Dynamics	$109,800	100,000	Combat systems, marine systems (submarines, EB Groton), IT services. Slightly lower base than the top three.
BAE Systems Inc (US)	$107,400	35,000	Combat vehicles, electronic systems, ship repair. US subsidiary of UK parent. Less RSU, more cash bonus.
L3Harris Technologies	$108,600	47,000	Tactical comms, geospatial, space systems. Formed by L3 + Harris merger 2019. Aggressive growth, faster promotions.

The security clearance premium

Clearance adds materially to defense ME compensation because the cleared candidate pool is small. The full-scope polygraph required for the highest tier (TS/SCI with poly) takes 12 to 24 months from initiation to grant, costs the employer $5,000 to $15,000 in investigation fees, and the candidate cannot work on the cleared program until granted. Employers price-match accordingly.

Clearance Tier	Premium	Where Required
No clearance	+$0	Commercial-equivalent base. About 60 percent of defense ME roles.
Secret clearance	+$5,000	$5,000 to $8,000 over base. Required for most program-level engineering.
Top Secret (TS)	+$10,000	$8,000 to $14,000 over base. Required for SAP and certain SCI programs.
TS/SCI	+$15,000	$12,000 to $18,000 over base. Required for IC contractor work, NRO, classified satellite programs.
TS/SCI with poly	+$22,000	$18,000 to $30,000 over base. Full-scope polygraph required. Highest premium tier, NSA/CIA contractor roles.

Once cleared, the engineer's market value increases significantly even outside the original employer. A TS/SCI with poly clearance held within the last two years is the single most valuable resume credential in defense engineering after the BS degree itself, and consulting firms (Booz Allen Hamilton, SAIC, Leidos, ManTech) pay premium hourly rates for cleared subject-matter experts. The flip side: clearance is hard to maintain (annual reinvestigation, foreign-contact disclosure, debt monitoring) and easy to lose (financial trouble, drug test failure, undisclosed foreign travel).

Geography: where defense MEs work

Defense ME employment concentrates in seven metros: the DC Beltway (Northrop, GD, Booz Allen, Lockheed Bethesda), Boston-Andover (Raytheon, Draper, MIT Lincoln Lab), LA-El Segundo-Palmdale (Lockheed Skunk Works, Northrop Aeronautics, Raytheon, Boeing Defense), Denver-Aurora (Lockheed Waterton, Raytheon Aurora, Ball Aerospace, Northrop), Seattle (Boeing Defense), Huntsville Alabama (Redstone Arsenal, MDA, NASA Marshall), and Orlando (Lockheed Missiles and Fire Control). See the linked Colorado, Massachusetts, and Connecticut pages for state-level pay breakdowns.

Frequently asked questions

How much do mechanical engineers make in defense contracting?+

Defense mechanical engineers earn a median of $110,500 per year and a mean of $112,300, per BLS Occupational Employment and Wage Statistics for May 2024 (SOC 17-2141 within NAICS 33641 defense subindustries). The sector employs roughly 19,600 mechanical engineers across the major primes.

What is the security clearance premium for defense MEs?+

Active secret clearance typically adds $5,000 to $8,000 over the unclearcred base for the same role. Top Secret adds $8,000 to $14,000. TS/SCI adds $12,000 to $18,000. TS/SCI with polygraph (full-scope) adds $18,000 to $30,000. The premiums reflect the small candidate pool, the time-and-cost barrier to clearance investigation (typically 6 to 18 months), and the limited mobility of cleared engineers between commercial and government markets.

Which defense prime pays mechanical engineers the most?+

Lockheed Martin and Northrop Grumman lead at roughly $116,000 and $115,200 medians, driven by classified program premiums (F-35, B-21 Raider). Raytheon Technologies (RTX) follows at $113,500. General Dynamics, BAE Systems Inc, and L3Harris cluster between $107,000 and $110,000. Differences narrow at senior levels because the customer (the US DOD) caps profit margins on defense contracts.

Is defense ME a stable career?+

Yes, more so than commercial engineering. Defense contracts run on 5- to 30-year cycles (the F-35 program is now in its 25th year), and the major primes have not had layoffs comparable to Boeing's 787 or Tesla's 2022/2024 cycles. The trade-off is slower career velocity: promotion timelines are longer and total comp ceilings are lower than at FAANG hardware or growth-stage hardware startups. Sequester risk is real (2013 sequester froze hiring for 18 months) but rare.

Do I need a PE license to work in defense?+

No. PE licensure is not required for defense engineering and adds no compensation premium at the major primes. The work product is signed under DOD program-management authority, not under a state-licensed engineer's seal.

What is the entry-level mechanical engineer salary in defense?+

Entry-level mechanical engineers in defense (0 to 2 years experience) typically earn $68,000 to $84,000 base, with cleared positions adding $3,000 to $8,000 after year one. Lockheed Martin, Raytheon, and Northrop Grumman new-grad offers cluster around $74,000 to $86,000 base in major metros (Denver, Boston, DC, LA). The defense primes also offer strong relocation packages, sign-on bonuses for cleared candidates, and tuition reimbursement for MS programs.

All Industries

Parent hub: every industry's pay band, ranked.

Aerospace

$112,750 median, overlaps heavily with defense.

Lockheed Martin

Level-by-level pay bands at the largest defense prime.

Colorado

Front Range defense cluster: Lockheed Waterton, Ball, Raytheon Aurora.

Connecticut

Pratt and Whitney, Sikorsky, Electric Boat.

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