Satellite Simulation & Test Software Engineer III - TeraWave

We are seeking a Satellite Simulation and Test Software Engineer III to design, develop, and verify simulation environments and models for testing TeraWave's satellite flight software subsystem. This role will be instrumental in software validation to support the expansion of TeraWave into a 5,408-vehicle constellation.

The ideal candidate is a hands-on engineer who can think independently and work in collaboration with subject matter experts to build a practical, scalable, flexible simulation environment. This person will have experience with spacecraft command and data handling (C&DH), telecommand and telemetry processing, hardware I/O interfaces, and the physics of spacecraft systems.

- Design, develop, and implement simulation software for testing and verifying TeraWave's flight software. - Collaboration with test team leads to develop a simulation environment that can be deployed on multiple platforms to support software-only test, HWIL test, real-time environment tests, and spacecraft AI&T - Collaborate with hardware, systems, and autonomy engineers to understand software requirements, interfaces, and behavioral boundaries across subsystems - Develop and integrate simulation environments and models to test FSW across a range of nominal and off-nominal operational scenarios - Participate in software integration, verification, and validation testing including software-in-the-loop (SIL) and hardware-in-the-loop (HIL) environments

- Bachelor's degree in Computer Science, Software Engineering, Aerospace Engineering, or related technical field - 3-5+ years of experience in spacecraft software, simulation software, or embedded software development - Proven experience with C++ software development for flight or embedded systems - Strong programming skills in C, C++, and Python - Understanding of Object-Oriented problem solving and software layering to facilitate modularity and reuse - Some knowledge of inter-process communication (IPC) mechanisms including sockets, shared memory, message queues, or publish-subscribe middleware - Experience with software lifecycle, configuration management (Git), CI/CD, and containerized environments - Experience with verification/validation practices for mission-critical embedded software systems - Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

- Master's degree in Computer Science, Software Engineering, or related field - Experience with simulation environments such as NASA's Trick - Knowledge of orbital mechanics and propagation models - Understanding of flight software/hardware interfaces including discrete I/O, TCP/IP, UDP, CAN, I2C, SPI, and RS-422/485 - Some experience with real-time operating systems (RTOS) such as Linux, QNX, VxWorks, RTEMS or equivalent - Experience with onboard time management, precision timing interfaces, or GPS-disciplined time synchronization - Familiarity with NASA cFS software architecture - Familiarity with spacecraft FDIR (Fault Detection, Isolation, and Response) concepts

Base Pay Range for: CO applicants is $150,931.00 - $211,303.05 WA applicants is $164,652.00 - $230,512.80