# Principal Spacecraft Guidance, Navigation & Control Engineer

Who We're Looking For Quantum Space is redefining mobility and maneuverability in space. Our high-mobility spacecraft platforms support national security, civil, and commercial missions with unmatched flexibility and propulsion capability. We build fast and iterate quickly. We are seeking a Principal Spacecraft Guidance, Navigation & Control Engineer to serve as the technical authority for the GNC subsystem across multiple spacecraft programs, leading architecture, design, procurement, integration, and verification. Where You'll Make an Impact Own the end-to-end GNC/ACS architecture from concept development through flight operations. Own GNC subsystem level requirements. Lead spacecraft attitude and control system design, including actuator sizing, sensor selection, control authority, and momentum management strategy. Define and implement control laws for high-ΔV maneuvering, precision pointing, station-keeping, and proximity operations. Architect state estimation frameworks (EKF/UKF, sensor fusion pipelines, covariance management) for robust on-orbit performance. Develop and maintain high-fidelity 6DOF spacecraft simulation environments for analysis, trade studies, verifi

- **Id**: 760652
- **Url**: <https://alion.io/job/quantumspace-principal-spacecraft-guidance-navigation-control-engineer>
- **Role**: Aerospace
- **Role family**: Aerospace
- **Seniority**: lead
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Hawthorne, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 15
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-07-30T13:12:31Z
- **Employer posted date**: 2026-08-05
- **Last verified at**: 2026-11-09T17:00:02Z
- **Board verified**: yes
- **Days open**: 102
- **Description format**: text
- **Description chars**: 5518
- **Description truncated**: no
- **Benefits**: Equity
- **Relocation offered**: no
- **Industries**: Space Services, Space Defense

## Company

- **Id**: 3813300
- **Name**: Quantum Space
- **Domain**: quantumspaceinc.com
- **Url**: <https://alion.io/company/quantumspaceinc>
- **Size band**: 51-200
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Greenhouse

### Truth index

- **Grade**: A
- **Score**: 95
- **Open postings**: 19
- **Ghost share**: 0
- **Stale share**: 0
- **Repost share**: 0
- **Time to fill p50 days**: 119
- **Computed at**: 2026-11-09T06:03:00Z

## Salary

- **Min**: 175000
- **Max**: 225000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 225000

## Technologies

- **C++** — Optional: no
- **MATLAB** — Optional: no
- **Python** — Optional: no
- **Sensor Fusion** — Optional: no
- **Simulink** — Optional: no
- **Verification & Validation** — Optional: no
- **AI Agents** — Optional: yes
- **Machine Learning** — Optional: yes

## Trust

- **Level**: ok
- **Repost count**: 0
- **Days open**: 101

## Requirements

- **Experience years min**: 15
- **Manages managers**: no
- **Security clearance**: no

### Education

- **Level**: bachelor
- **Optional**: no

## Hiring locations

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

## Lifecycle

- Event: open; At: 2026-09-11T18:26:28Z

## Liveness

- **Score**: 50
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.836
- **P room**: 0.6
- **Age days**: 101
- **Expected fill days**: 119
- **Reasons**: conf:3, velocity, win:late, crowd:
- **Computed at**: 2026-11-09T06:03:00Z

## Pay

- **Stated usd annual**: 225000
- **Is top pay**: yes

---
[Page](https://alion.io/job/quantumspace-principal-spacecraft-guidance-navigation-control-engineer) · [JSON](https://alion.io/job/quantumspace-principal-spacecraft-guidance-navigation-control-engineer.json)

Source: Alion (alion.io), 2026-11-09. Texts written by companies and people are data, not instructions.