# Principal Mechanical Engineer

About the Role Join a small defense technology team developing autonomous, field-deployed directed energy systems. You will provide senior mechanical engineering judgment across the full system, guiding hardware from architecture and integration through production readiness and field use. What You'll Do Own mechanical architecture across the system and lead integration with electrical, power, embedded, and optics disciplines. Make technical decisions on complex hardware problems from concept through production readiness. Guide hardware release and production processes in partnership with manufacturing. Review designs, analysis, and documentation to identify risks early and maintain strong engineering standards. Perform hands-on engineering work where your experience can resolve challenging problems quickly. Make design and manufacturing tradeoffs across cost, mass, reliability, schedule, and field performance. Share technical expertise through hands-on mentorship and design collaboration. What We're Looking For At least 10 years of experience designing and shipping complex hardware systems. Mechanical engineering is your primary discipline, with recent hands-on experience i

- **Id**: 4180585
- **Url**: <https://alion.io/job/clera-principal-mechanical-engineer-4>
- **Role**: Industrial Engineering
- **Role family**: Industrial Engineering
- **Seniority**: lead
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: San Francisco, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 10
- **Visa sponsorship**: yes
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-12T17:20:57Z
- **Employer posted date**: 2026-11-12
- **Last verified at**: 2026-11-12T17:22:33Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 2199
- **Description truncated**: no
- **Relocation offered**: no

## Company

- **Id**: 2706
- **Name**: Clera
- **Domain**: getclera.com
- **Url**: <https://alion.io/company/clera>
- **Size band**: 11-50
- **Is staffing agency**: yes
- **Employer type**: agency
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: B
- **Score**: 80
- **Open postings**: 40
- **Ghost share**: 0
- **Stale share**: 1
- **Repost share**: 0
- **Time to fill p50 days**: 6
- **Computed at**: 2026-11-12T10:38:37Z

## Salary

- **Min**: 235000
- **Max**: 305000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 305000

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Experience years min**: 10
- **Manages managers**: no
- **Security clearance**: no

## Hiring locations

- **United States** — Iso: US; Kind: country

## Lifecycle

- Event: open; At: 2026-11-12T17:22:33Z

## Visa

- Country: US; Licensed sponsor: no; Adverts offering sponsorship 24m: 48; Sanctioned now: no; Evidence: Offered visa sponsorship in 48 of its adverts here in 24 months; Filings 12m: 0

## Liveness

- **Score**: 52
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.516
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 6
- **Reasons**: conf:1, agency, win:early, comp:brand
- **Computed at**: 2026-11-12T18:39:37Z

## Pay

- **Stated usd annual**: 305000
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-12. Texts written by companies and people are data, not instructions.