Portalsystems
Senior Software Development Engineer – Satellite Software & Firmware
Portalsystems, Bothell, Washington, United States, 98021
Senior Software Development Engineer – Satellite Software & Firmware
We are seeking an experienced Software Development Engineer to develop mission-critical satellite software and firmware. The ideal candidate will have proven flight experience, a strong background in embedded software development for satellite systems, and expertise in real-time operating systems (RTOS), fault-tolerant computing, and spacecraft autonomy. This role will focus on designing, developing, testing, and deploying onboard software that ensures the success of satellite missions, including low-Earth orbit (LEO), geostationary (GEO), and deep-space missions.
Responsibilities
Develop flight software for satellite platforms, including avionics, attitude determination and control systems, power management, and onboard data handling. Design and implement firmware for embedded processors and FPGAs used in satellite subsystems. Work with real-time operating systems (RTOS), embedded Linux, and space-grade processors. Develop autonomous fault detection, isolation, and recovery (FDIR) mechanisms to ensure mission reliability. Implement and optimize spacecraft communication protocols (e.g., CCSDS, SpaceWire, CAN, UART, Ethernet). Perform software validation, verification, and integration with hardware-in-the-loop (HIL) simulations and satellite testbeds. Support pre-flight testing, launch preparations, and in-orbit operations, including remote software updates. Ensure compliance with industry standards (e.g., ECSS, NASA cFS, DO-178C, MISRA, CubeSat standards). Collaborate with partner organizations on satellite software development. Mentor junior software engineers. Basic Qualifications
Master’s degree in Computer Science, Electrical Engineering, Aerospace Engineering, or related fields. 10+ years of experience in developing flight software and firmware for satellites. Strong proficiency in C, C++, and Python for embedded systems and satellite software. Experience with real-time operating systems (RTOS) and low-level hardware-software interfaces. Knowledge of satellite communication protocols (e.g., CCSDS, SpaceWire, CAN, RS-422). Understanding of fault tolerance, redundancy, and radiation-hardened computing for space missions. Experience with version control systems (Git) and modern software development best practices. Experience with hardware-in-the-loop (HIL) testing, simulators, and satellite software testbeds. Proven experience with flight-proven software deployed on operational satellites. Preferred skills & Experience
Familiarity with satellite command and data handling systems, embedded Linux, and space-grade processors. Experience with CubeSats, small satellites, or GEO satellite constellations. Knowledge of flight software frameworks (e.g., NASA Core Flight System (cFS), FreeRTOS, VxWorks). Background in autonomous spacecraft operations and AI-driven onboard decision-making. Experience with secure satellite communications, encryption, and cybersecurity in space systems. Senior Thermal Engineer – Spacecraft Systems
Bothell, WA Full-time Senior Electrical Engineer – Spacecraft Power Systems & Bus Architecture
Bothell, WA Full-time Senior Satellite Guidance, Navigation, and Control (GNC) Engineer
Bothell, WA Full-time
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We are seeking an experienced Software Development Engineer to develop mission-critical satellite software and firmware. The ideal candidate will have proven flight experience, a strong background in embedded software development for satellite systems, and expertise in real-time operating systems (RTOS), fault-tolerant computing, and spacecraft autonomy. This role will focus on designing, developing, testing, and deploying onboard software that ensures the success of satellite missions, including low-Earth orbit (LEO), geostationary (GEO), and deep-space missions.
Responsibilities
Develop flight software for satellite platforms, including avionics, attitude determination and control systems, power management, and onboard data handling. Design and implement firmware for embedded processors and FPGAs used in satellite subsystems. Work with real-time operating systems (RTOS), embedded Linux, and space-grade processors. Develop autonomous fault detection, isolation, and recovery (FDIR) mechanisms to ensure mission reliability. Implement and optimize spacecraft communication protocols (e.g., CCSDS, SpaceWire, CAN, UART, Ethernet). Perform software validation, verification, and integration with hardware-in-the-loop (HIL) simulations and satellite testbeds. Support pre-flight testing, launch preparations, and in-orbit operations, including remote software updates. Ensure compliance with industry standards (e.g., ECSS, NASA cFS, DO-178C, MISRA, CubeSat standards). Collaborate with partner organizations on satellite software development. Mentor junior software engineers. Basic Qualifications
Master’s degree in Computer Science, Electrical Engineering, Aerospace Engineering, or related fields. 10+ years of experience in developing flight software and firmware for satellites. Strong proficiency in C, C++, and Python for embedded systems and satellite software. Experience with real-time operating systems (RTOS) and low-level hardware-software interfaces. Knowledge of satellite communication protocols (e.g., CCSDS, SpaceWire, CAN, RS-422). Understanding of fault tolerance, redundancy, and radiation-hardened computing for space missions. Experience with version control systems (Git) and modern software development best practices. Experience with hardware-in-the-loop (HIL) testing, simulators, and satellite software testbeds. Proven experience with flight-proven software deployed on operational satellites. Preferred skills & Experience
Familiarity with satellite command and data handling systems, embedded Linux, and space-grade processors. Experience with CubeSats, small satellites, or GEO satellite constellations. Knowledge of flight software frameworks (e.g., NASA Core Flight System (cFS), FreeRTOS, VxWorks). Background in autonomous spacecraft operations and AI-driven onboard decision-making. Experience with secure satellite communications, encryption, and cybersecurity in space systems. Senior Thermal Engineer – Spacecraft Systems
Bothell, WA Full-time Senior Electrical Engineer – Spacecraft Power Systems & Bus Architecture
Bothell, WA Full-time Senior Satellite Guidance, Navigation, and Control (GNC) Engineer
Bothell, WA Full-time
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