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Senior Integration Engineer

Lux Aeterna
FULL_TIME Remote · US Denver, CO, US Posted: 2026-05-11 Until: 2026-07-10
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Job Description
The Mission 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. The Opportunity 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. You will define how Lux Aeterna integrates and tests vehicles, build the procedures and tools that make it repeatable, and personally execute the campaigns that get hardware to the pad. This is a unique opportunity to: 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 Work directly with technical leadership to shape how Lux Aeterna integrates, tests, and certifies reusable spacecraft Join a rapidly growing team with the resources to tackle ambitious technical challenges Why Lux Aeterna? 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 The Role 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; keep it representative of flight; 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 deco