Spacecraft Core Flight Software Engineer
Confirmed on the employer's own hiring board on Oct 31, 2026. First seen by Alion on Oct 28, 2026.
Spacecraft Core Flight Software Engineer
Engineer II
R0173915
NASA Johnson Space Center
Houston, Texas
HX5 is an award-winning provider of engineering, research and development, and technical services to clients such as NASA and the Department of Defense. Founded in 2004, HX5 is a fast-growing veteran- and woman-owned company with locations nationwide.
HX5 is currently seeking a Spacecraft Core Flight Software Engineer to join the JETSII Contract.
Essential Duties and Responsibilities:
- Decompose system requirements into software requirements
- Develop Requirements Traceability Matrix
- Write software to build interfaces between vehicle level GFE code and module level contractor-supplied code
- Analyze performance of software interfaces and perform integration testing
- Develop C / Python software to provide the required functionality
- Perform software testing and verification
- Develop software documentation
- Document interfaces and develop an Interface Control Document
- Serve as SW Development and SW Testing Subject Matter Expert
- Develop unit and interface verification tests
- Perform other duties as assigned
Education and Experience
This position has been posted at multiple levels. Depending on the candidate's experience, requirements and business needs, we reserve the right to consider candidates at any level for which this position has been advertised.
- BS in engineering from an ABET-accredited engineering school
- Strong C programming skills and experience within the last 2 years
- Proficiency with C coding in a Linux environment
- Strong Python skills and experience within the last 2 years
- Familiarity with Integrated Development Environment (IDE) tools
- Experience with web-based collaboration tools
- Excellent communication, negotiation, and coordination skills and strong customer service attitude
- Ability to work in a team environment and independently
- System and software configuration management experience
- Good oral and written communication with customers and team members
- Excellent time management skills and ability to manage multiple actions, and both short-term and long-term projects
- Customer service oriented
- Must be willing to work onsite at Johnson Space Center
Preferences:
- Experience with agile software development
- Experience with embedded processors
- Experience with VxWorks Real-Time Operating System (RTOS)
- Data-driven architecture experience
- Experience with Core Flight System (cFS) Applications (or similar flight software framework)
- Experience with NASA NPR 7150.2 or DO-178C
- Experience with NASA Safety Standards and requirements, NASA-STD-8739.8, that drive the processes for Safety Critical Software Development
- Experience working as part of an Integrated Product Team to develop and test safety-critical flight software
- Experience with software testing and verification
- Experience developing software across the full development life cycle
- Experience with the following web-based collaboration tools:
- GitLab
- JIRA
- Confluence
- Quick learner and self-motivated
- Ability to manage multiple priorities with little supervision
- Highly responsible, team-oriented individual with strong work ethic
- Highly developed coordination and organization skills
Position Type/Expected Hours of Work:
This is a full-time position and offers a 9/80 work schedule (every other Friday off).
Other Position Requirements:
- Proof of U.S. Citizenship or US Permanent Residency is a requirement for this position.
- Must be able to complete a U.S. government background investigation.
HX5 offers a competitive salary and benefits package to include:
- Medical/Dental/Vision Insurance
- 401(k) plan with Company Match
- Paid Holidays
- Paid Time Off
- Parental Leave
- Life Insurance
- Tuition Reimbursement
- Medical and Dependent Care Flexible Spending Accounts
HX5, LLC is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, age, national origin, ancestry, citizenship, disability, or veteran status.
HX5, LLC is a Drug Free Workplace Employer.
ACCESSIBILITY NOTICE: If you need a reasonable accommodation for any part of the employment process due to a physical or mental disability, please call (850) 362-6551.