Staff Spacecraft Mission Integration Engineer

Apex; Los Angeles (CA); On-site; USD 190,000 - 230,000; Full time

Benefits offered by this job

Shared upside: equity in Apex

Best-in-class healthcare: 100% company

Comprehensive PTO: 15–20+ days + 10+.

401(k) with match

Parental leave and travel support

Daily catered lunch and snacks

Vibrant office culture and events

Competitive tools and workspace

Job summary

Apex is seeking a Staff Mission Integration Engineer specializing in Space Vehicle Design to join our expanding team. The Mission Integration group turns our spacecraft platform into the backbone of customer missions and serves as the primary liaison between customers and technical teams.

You will develop mission concepts, perform technical analyses, resolve interfaces, and lead end-to-end integration and test across electrical, mechanical, and software domains while coordinating with external

Qualifications

• U.S. Person status required due to export-controlled data access.
• 12+ years of experience with complex hardware systems (spacecraft preferred).
• Experience in satellite manufacturing or related industries (aerospace/defense).
• Strong understanding of space systems, launch vehicle mechanics, orbital dynamics, and mission operations.
• Proficiency in Python, MATLAB, STK, FreeFlyer, GMAT or similar tools.
• Experience coordinating cross-functional teams and managing timelines in fast-paced environments.
• Strong communication and organizational skills with attention to detail.
• Ability to deliver concise, technical reviews.

Responsibilities

• Define end-to-end mission architecture for large, complex mission sets.
• Lead technical inputs to proposals with technical approaches, feasibility studies, and cost estimates.
• Perform mission analysis including orbital mechanics, trajectory planning, deployment strategies.
• Serve as primary technical liaison between customers and internal teams.
• Lead discussions in customer meetings, design reviews, and status updates.
• Coordinate cross-functional teams across electrical, mechanical, and software engineering to ensure integration and performance.
• Develop and maintain system-level documentation (specs, ICDs, SDDs).
• Generate mission-specific budgets (power, mass, data, pointing).
• Plan and execute final integrated vehicle tests and site visits.

Skills

Spacecraft design

Mission integration

Architecture definition

Orbital mechanics

Python

MATLAB

STK

FreeFlyer

GMAT

Education

Bachelor's degree in Aerospace Engineering

Tools

Python

MATLAB

STK

FreeFlyer

GMAT

Job description

Apex is seeking a Staff Mission Integration Engineer specializing in Space Vehicle Design to join our expanding team. The Mission Integration group turns our spacecraft platform into the backbone of customer missions and serves as the primary liaison between customers and technical teams.

You will develop mission concepts, perform technical analyses, resolve interfaces, and lead end-to-end integration and test across electrical, mechanical, and software domains while coordinating with external