Aerospace Engineer Hiring Cost in 2026

US security clearances come in three primary tiers relevant to aerospace engineering hiring: Confidential (the lowest tier, rarely the gating factor for engineering roles), Secret (the common entry-level clearance for defense-adjacent aerospace work, typically requiring a 6 to 12 month adjudication for a new candidate), and Top Secret (TS) with optional Sensitive Compartmented Information (SCI) access, which gates the special-access programs and most space-payload work. The adjudication timeline for TS investigations through the Defense Counterintelligence and Security Agency (DCSA) commonly runs 12 to 24 months for new candidates per published DCSA case-processing statistics, which means hiring a new uncleared candidate into a TS-required role requires a 12-plus month sponsorship investment before the candidate becomes productive on the cleared work.

The hiring-cost implications scale with the clearance tier. Active Secret clearance adds 10 to 15 percent salary premium per the ClearanceJobs Compensation Survey 2025 data. Active TS adds 15 to 25 percent. Active TS/SCI adds 25 to 40 percent. The premiums reflect both the candidate-pool scarcity and the candidate-side leverage of holding a current clearance (re-acquiring a lapsed clearance requires a fresh investigation, so candidates with active clearances have lower switching costs and command higher offers). Time-to-fill for active-cleared candidates runs 30 to 60 percent above equivalent uncleared roles because the active-cleared pool is small enough that the major employers in the segment compete directly for the same engineers.

The alternative to hiring active-cleared candidates is hiring uncleared candidates and sponsoring them through the clearance investigation. The cost of sponsorship is the clearance-investigation fee (DCSA charges roughly $5,000 to $15,000 per Tier 5 TS/SCI investigation depending on scope), plus the candidate's full salary during the 12 to 24 month adjudication window during which the candidate cannot work on the cleared program. For a senior engineer at $150k base during an 18-month TS sponsorship, that is roughly $225k of carry cost before the candidate is productive on the gating work. The cost is justified only for hires the employer intends to retain for many years and for whom the active-cleared market alternative is unavailable.

The choice between commercial space and defense prime hiring shapes the offer-stage dynamics meaningfully. Commercial space programs (SpaceX, Blue Origin, Rocket Lab, Relativity Space) compete with equity-heavy offers where the upside is concentrated in private-company stock. Defense primes (Lockheed Martin, Boeing Defense, Northrop Grumman, Raytheon Technologies, General Dynamics) compete with higher base, pension benefits, broader benefits packages, and the long-term stability of multi-decade contract pipelines. The cleared-startup segment (Anduril, Shield AI, Skydio, Saronic) hybridises the two: equity-heavy comp similar to commercial space, with cleared workforces similar to defense prime, and faster decision-making and product cycles than either.

From a hiring-cost perspective, total TCO across the three segments is comparable at the senior IC level despite the surface differences. The offer-acceptance rates differ meaningfully: defense prime offers have higher acceptance rates because the offer-side competitive landscape is narrower and the stability of the long-term role is attractive to candidates with families and clearance investments to protect. Commercial space and cleared-startup offers see lower acceptance rates because competing offers from multiple commercial-space and cleared-startup employers are common, and equity-valuation negotiations are frequently the deciding factor. The hiring-cost ledger should account for the lower acceptance rates in those segments by planning for 1.4 to 1.7 finalists per accepted offer rather than the 1.2 to 1.4 typical of defense prime hiring.

Cleared aerospace hiring uses a meaningfully different channel mix from general engineering. ClearanceJobs.com is the dominant inbound channel for active-cleared candidates because the platform pre-filters for clearance eligibility. Industry-specific staffing firms with cleared candidate Rolodexes (CACI, ManTech, ASRC Federal, SAIC contract staffing) dominate the contingency channel for cleared roles, with fees commonly running 22 to 30 percent of first-year base because the candidate access is narrow. Direct employer-to-employer recruiting through DoD-industry networking events and AIAA conference circuits remains a primary senior IC channel.

University recruiting from the strong US aerospace engineering programs (Georgia Tech, MIT, Stanford, Michigan, Purdue, Texas A&M, Caltech, Embry-Riddle, Penn State, Maryland) is the dominant entry-level pipeline. Most major defense primes and commercial space programs run intern-to-hire conversion programs starting in sophomore or junior year, with conversion targets of 60 to 75 percent of intern offers. The early commitment is necessary because the clearance-sponsorship timeline (12 to 24 months for TS) means the intern-year start is the optimal point to begin investigation processing for candidates who will join the cleared workforce after graduation.