Flight Software Engineer

Attis; Los Angeles, California (CA, MO); On-site; USD 135,000 - 225,000; Full time

Job summary

Attis is building autonomous, defense-focused satellite software from a seed-stage startup location in the United States. This role centers on end-to-end flight software architecture, development, and collaboration across avionics, propulsion, and GNC teams to realize orbital capabilities.

You will own the flight software stack, ground control tools, and testing frameworks in a fast-paced, on-site environment, with equity potential as the company scales.

Qualifications

• 4+ years experience in systems, mission operations, or embedded software development.
• Experience with space systems or safety-critical embedded systems.
• U.S. Citizenship and ability to obtain TS/SCI clearance.
• Ability to work 100% on-site with an engineering team in an early-stage environment.

Responsibilities

• Architect, develop, and integrate the flight software stack end-to-end.
• Build ground-side mission operations software for real-time planning, telemetry, and commanding.
• Write embedded real-time software for flight computers, sensors, and actuators.
• Collaborate with avionics, propulsion, and GNC teams to define software interfaces and data models.
• Establish flight software CI/CD pipelines, automated testing frameworks, and SIL/HIL simulation environments.
• Support software-in-the-loop, hardware-in-the-loop, environmental testing, and flight campaigns.

Skills

Embedded software

Space systems

Real-time OS

C++

Tools

HIL testing

SIL testing

CI/CD pipelines

Job description

Space Technology / Defense Tech / Spacecraft Autonomy

Seed-Stage Defense Technology Startup

Up to $225,000

The Company

• An elite, seed-funded defense space startup founded by former SpaceX leaders.
• Developing autonomous, maneuverable satellites designed to defend critical orbital assets.
• Backed by top-tier venture capital firms including Upfront Ventures and Bloomberg Beta.

Why Join?

• Direct impact building the core flight software architecture from early concept to orbital flight.
• Tight-knit, agile engineering culture with zero corporate bureaucracy and rapid decision-making.
• Full ownership across ground control tools, embedded flight systems, and hardware-in-the-loop testing.
• Generous founding-level equity stake in a high-growth national security space enterprise.

The Role

A technical, hands-on role where you will:

• Architect, develop, and integrate the flight software stack end-to-end.
• Build ground-side mission operations software for real-time planning, telemetry, and commanding.
• Write embedded real-time software for flight computers, sensors, and actuators.
• Collaborate with avionics, propulsion, and GNC teams to define software interfaces and data models.
• Establish flight software CI/CD pipelines, automated testing frameworks, and SIL/HIL simulation environments.
• Support software-in-the-loop, hardware-in-the-loop, environmental testing, and flight campaigns.

The Essential Requirements

• 4+ years experience in systems, mission operations, or embedded software development.
• Demonstrated experience with space systems (satellites, rovers, launch vehicles) or safety-critical embedded systems.
• U.S. Citizenship and ability to obtain or maintain an active TS/SCI security clearance.
• Ability to work 100% on-site with an engineering team in an early-stage environment.

What Will Make You Stand Out

• Experience spanning both vehicle embedded flight code and ground control / telemetry tools.
• Hands-on setup of hardware-in-the-loop (HIL) testbeds and automated DevOps pipelines for flight hardware.

Disclaimer:

No terminology in this advert is intended to discriminate on the grounds of age, sex, race, religion or belief, disability, pregnancy and maternity, marriage and civil partnership, sexual orientation, gender, and/or gender reassignment, and we confirm that we are happy to accept applications from anyone for this role. Attis Global Ltd operates as an employment agency and employment business. More information can be found at attisglobal.com.

Keywords for Search (SEO)

Flight Software Engineer, Embedded Systems Developer, Spacecraft Autonomy, Mission Control Software, Telemetry Commanding, Satellite Software, Avionics C++, Real Time Operating Systems, HIL Testing, SIL Testing, Defense Space