Sr Software Engineer, Embedded Flight Software with Security Clearance

York Space Systems was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next- generation space mission operations worldwide. Today, York is one of the most innovative aerospace companies, specializing in end-to-end customer solutions and the rapid production of spacecraft platforms.

York's complete Space Segment Solution includes spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mission operations, enabling customers to leverage York's existing technology solutions to get to orbit rapidly and responsively. We're looking to expand our team across the board. York is seeking a Senior Embedded Flight Software Engineer to design, develop, test, and deliver mission-critical software for spacecraft systems.

This role focuses on real-time and embedded Linux-based flight software, enabling reliable command, telemetry, networking, and autonomy across on-orbit vehicles. The ideal candidate is a hands-on engineer with strong systems thinking who can operate across the full lifecycle-from architecture and development through integration, test, and on-orbit support. Not all skills below are required, we encourage you to apply if you have an interest in learning! Responsibilities

• Design and develop embedded flight software in C/C++ for spacecraft systems
• Design, develop, and maintain reliable embedded flight software for resource-constrained, safety-critical systems.
• Develop and debug multithreaded software, including thread synchronization, interprocess communication, race-condition prevention, and deadlock avoidance.
• Integrate software with hardware components (OBCs, radios, payloads) in HITL and flatsat environments
• Develop and execute test strategies (unit, integration, system, and mission-level testing)
• Support on-orbit operations, debugging, and anomaly resolution
• Translate Interface Control Documents (ICDs), system requirements, and hardware specifications into robust software interfaces and implementations.
• Collaborate across platform, applications, mission ops, and hardware teams
• Experience with HITL, flatsat, or system-level test environments Required Qualifications
• Bachelor's degree in Computer Engineering, Electrical Engineering, Computer Science, or related field
• 5+ years of experience in embedded software development
• Strong proficiency in C/C++
• Experience with embedded Linux systems (drivers, networking, system-level debugging)
• Experience with deterministic build systems such as Yocto or VxWorks
• Familiarity with networking protocols (TCP/IP, UDP, routing concepts)
• Experience debugging hardware/software integration issues
• Ability to work in a fast-paced, mission-driven environment
• Willingness to work full-time in our Greenwood Village, CO office;
• Must be clearance eligible and ability to maintain an active Secret Clearance or higher
• Love space!

Preferred Qualifications

• Master's Degree in computer science or engineering related field
• 8+ years of experience working with software, network infrastructure, and data transport protocols in space.
• Expierence with Real-Time Operating Systems
• Experience with spacecraft, aerospace, or safety-critical systems
• Knowledge of real-time systems and deterministic software design
• Familiarity with CCSDS, DTN, or space communication protocols
• Understanding of cybersecurity principles (secure boot, signing, key management)
• Experience supporting on-orbit operations or live systems
• Active Secret Clearance Benefits

In addition to compensation, York Space Systems is proud to offer a comprehensive benefits package including medical, dental, and vision insurance along with PTO and a 401K. How To Apply
Interested candidates are encouraged to apply by clicking the "Apply" link at the top of the page. York Space Systems will be accepting applications on a rolling basis until the position is closed. York Space Systems provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, military or protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Must have permanent authorization to work in the United States. This policy applies to all terms and conditions or employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. YORK SPACE SYSTEMS IS AN EEO EMPLOYER.