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# Staff Embedded Software Engineer

- **Company:** INTERACTIVE SCIENCE PROGRAMS
- **Location:** Long Beach, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $181,000.0 - $248,500.0
- **Contract:** Permanent contract
- **Skills:** Abstraction Layers, Modems, Data Transmissions, Software Debugging, Linux, Device Drivers, Embedded Software, Ethernet, Design of User Interfaces, Network Programming, Performance Tuning, Signal Integrity, System Programming, Universal Asynchronous Receiver/Transmitter, Serial Peripheral Interface
- **Published:** July 9, 2026
- **Apply:** https://boards.greenhouse.io/relativity/jobs/8560534002?gh_jid=8560534002

## About the Role

* BS/MS in Computer Science or Electrical Engineering and 5+ years of relevant experience
 * Comfort implementing control loops in software and understanding enough digital communications to interface correctly with modem hardware, even if you're not designing the waveforms yourself
 * Experience with Linux device driver development and real-time or embedded software design
 * Strong systems programming skills in C, with experience writing software that talks directly to hardware - device drivers, register-level interfaces, or bus protocol implementations
 * Solid network programming skills: sockets, packet handling, and layer 2/3 protocol implementation
 * Experience with spacecraft communication subsystem software or radio interface development
 * Familiarity with CCSDS packet structures and protocols
 * Hands-on experience with serial and bus interfaces to radio hardware - SPI, I2C, UART, and Ethernet-based control planes
 * Experience with thermal control loop implementation and tuning
 * Knowledge of optical communication terminal operation concepts or free-space optical link systems
 * Background in hardware abstraction layer design for systems with multiple hardware variants or evolving interfaces
 * Comfort in a hardware lab: serial consoles, logic analyzers, and debugging signal integrity issues alongside the electronics team



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