Senior Integration/Test Engineering

Space is the bleeding edge for humanity's next industrial revolution. While reusable rockets have opened the door, true economic transformation requires infrastructure that makes orbit as accessible and reliable as air travel. At Lux Aeterna, we're building that future by developing the first reusable satellite platform with controlled return capability — transforming space from a one-way street into a two-way highway for innovation and commerce.

We are seeking an exceptional Integration Engineer to own the assembly, integration, and test (AI&T) of Lux Aeterna's reusable spacecraft — from the first flatsat to flight vehicle delivery and post-flight refurbishment. This role sits at the intersection of flight hardware, flight software, ground software, and operations, and is the connective tissue that turns subsystems into a working spacecraft.

This is a software-leaning AI&T role. We are looking for someone who can write the test scripts, drive the flatsat, automate the regression suite, and debug a stuck CAN bus or a misbehaving FSW state machine with equal comfort. Develop and execute integration and test procedures across spacecraft-level functional, environmental, and end-to-end mission scenarios

Build the test automation, scripting, and data review infrastructure that makes high-cadence AI&T possible

Own Lux Aeterna's flatsat build and operation — the engineering model that anchors integration, regression, and operations rehearsals for every vehicle

Drive anomaly investigation and corrective action across flight software, avionics, GNC, and ground systems

Pioneering Technology: We’re developing the first reusable satellite platform with controlled return capability, fundamentally transforming space from a one-way journey to a two-way highway

Real Impact: Your work will enable new industries in space manufacturing, research, and logistics while pioneering sustainable space infrastructure

Speed & Autonomy: We maintain parallel hardware development streams and empower engineers to innovate rapidly while upholding rigorous aerospace standards

World‑Class Team: Work alongside experts from leading aerospace companies and research institutions, building technology that will reshape humanity’s access to space

You will own spacecraft AI&T end‑to‑end and serve as the integrating engineer across hardware, flight software, and ground software during build and test.

Define and execute the integration and test sequence for the spacecraft — from incoming subsystem checkout, through flatsat‑level integration, vehicle integration, environmental test, and pre‑ship verification

Build, own, and operate the flatsat (engineering test bed) — bring up new avionics, harnessing, and subsystem stand‑ins; and use it as the primary asset for FSW regression, mission rehearsal, and ground‑segment integration

Develop test procedures, work instructions, and acceptance/qualification documentation (ATP/QTP) that flight hardware moves through, and own configuration control of build and test data

Write and maintain test automation — scripting, command/telemetry tooling, and data review pipelines that let one engineer run a campaign that used to need three

Run vehicle‑level functional tests, comm checks, polarity and continuity verification, day‑in‑the‑life sequences, and end‑to‑end mission scenarios with flight software and ground software in the loop

Lead anomaly investigation during integration and test — partner with FSW, GNC, electrical, and structures to root‑cause issues, drive corrective action, and close NCRs

Support environmental test campaigns (TVAC, vibration, EMI/EMC) — own test setup, instrumentation, conduct, data review, and pass/fail dispositioning at the spacecraft level

Evolve data acquisition systems (DAQs) — schematics and hardware builds as well as HMI/GUIs

Partner with the flight software team to expand hardware‑in‑the‑loop (HITL) coverage on the flatsat and ensure FSW changes are exercised against representative hardware before they fly

Partner with the ground software team to validate command paths, telemetry decoms, mission scripts, and operator workflows against the flatsat and integrated vehicle

Support launch site operations, on‑orbit commissioning, and post‑flight refurbishment — close the loop from test data to flight performance and back into procedures

Help define AI&T standards, tooling, and hiring as the integration team grows around you

S. in Aerospace, Electrical, Computer, Mechanical, or Software Engineering, or a related technical field (or equivalent practical experience)

5+ years of hands‑on aerospace AI&T experience on satellites, launch vehicles, reentry vehicles, or other flight hardware programs

Hands‑on experience building and operating a flatsat, engineering model, or integration test bed

Strong scripting and automation skills in Python; comfort reading and modifying C/C++ in flight or test software, comfortability in Linux environments.

Working knowledge of spacecraft buses and interfaces (CAN, RS‑422/485, SpaceWire, Ethernet, I2C/SPI) and the tools used to debug them (logic analyzers, scopes, bus sniffers)

Experience writing and executing formal AI&T procedures (ATP/QTP), capturing test results, and managing as‑built configuration

Experience driving anomaly investigations and corrective actions that cross hardware/software boundaries

Ability to operate effectively in fast build‑test‑iterate environments with high ownership and minimal supervision

Direct experience as a spacecraft I&T lead, test conductor, or responsible engineer on a satellite program

Experience supporting environmental test campaigns (qualification or protoqualification functional, TVAC, sine/random/shock vibration, EMI/EMC) at the spacecraft level

Experience integrating with and validating flight software stacks (Linux‑based, RTOS, or both) and FDIR behavior

Familiarity with HITL/SIL frameworks, test automation tools, and CI for embedded software

Experience supporting launch site operations, range processing, or on‑orbit commissioning

Prior experience at an early‑stage aerospace startup

We are onsite 5 days/week by default, but flexible when life requires it.

Certain roles may involve access to export‑controlled technical data.