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NASA Space Reactor – 1 Freedom Flight Software Development Engineer

CACI


Job Location:

Houston, TX - USA

Monthly Salary: $ 76000 - 155700
Posted: 20 August 2026 (7 hours ago)
Application Deadline: 17 November 2026
Vacancies: 1 Vacancy

Job Summary

Job Title: NASA Space Reactor 1 Freedom Flight Software Development Engineer

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: NACI

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

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The Opportunity:

CACI is looking for a Flight Software Development Engineer to support the Space Reactor 1 Freedom Program at NASA Johnson Space Center (JSC). This exciting position includes design and development of safety-critical embedded flight software and supporting software tools for Space Reactor 1 Freedom Integrated flight software. This software engineering position includes prototyping requirements definition design development test and verification integration and certification of flight software.

This position requires a self-motivated engineer with strong technical depth communication skills problem-solving ability and a collaborative customer-focused mindset. The strongest candidates will be flexible team-oriented and able to explain complex technical ideas clearly and convincingly while sharing our passion for the nations space program and the development of the next generation of space vehicles. This work is performed onsite at NASA/JSC in Houston Texas in a highly dynamic environment that is central to human spaceflight and space exploration.


Responsibilities:

  • Design and develop SR-1 flight software and supporting software tools.
  • Develop and maintain software using the NASA Core Flight Software (cFS) framework.
  • Perform systems engineering in support of software requirements interface definitions and performance analysis.
  • Perform software integration test and verification.
  • Integrate and test software/hardware in avionics test bed and flight certification environments.
  • Collaborate with engineering teams and contractors across multiple NASA programs and projects.
  • Ensure adherence to JSC standard software process practices.


Qualifications:

Required:

  • Must be a U.S. Citizen or Permanent Resident to facilitate access to USG facilities.
  • B.S. in Electrical Mechanical Aerospace Software Computer or Systems Engineering Computer Science or related disciplines.
  • At least 5 years of experience in software development for safety-critical software. Experience can be for aerospace vehicles or in other industries e.g. oil and gas. More experience is highly valued.
  • Strong C programming skills and experience with Linux.
  • Must have experience in the entire software life cycle.
  • Experience with software unit testing.
  • Must be flexible open to new challenges in a dynamic environment and possess strong technical expertise combined with strong verbal and written communication skills.
  • Requires the ability to manage multiple priorities with little supervision.
  • Must be a highly responsible team-oriented individual with strong work ethic.


Desired:

  • M.S. in Computer Science Software Engineering Electrical Mechanical Aerospace Computer or Systems Engineering or related discipline.
  • Experience in human-rated space vehicles e.g. Space Shuttle Space Station Orion Commercial Crew Gateway and in specific vehicle software domains (e.g. C&T C&DH GN&C).
  • Experience in NASA Core Flight Software (CFS).
  • Python development skills.
  • Experience developing embedded software for Real-time Operating Systems preferably VxWorks.
  • Experience in bus communication protocols (e.g. 1553 RS-422 RS-232 USB Ethernet).
  • Experience in software and systems integration.
  • Experience in automated testing.
  • Experience in verification testing.
  • Experience using GitLab and the Git version control system.
  • Experience using Jira.
  • Experience working in an Agile software development environment.

This position is contingent on funding and may not be filled immediately. However this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.

What You Can Expect:

A culture of integrity.

At CACI we place character and innovation at the center of everything we do. As a valued team member youll be part of a high-performing group dedicated to our customers missions and driven by a higher purpose to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. Youll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together we will advance our nations most critical missions build on our lengthy track record of business success and find opportunities to break new ground in your career and in our legacy.


Pay Range:

There are a host of factors that can influence final salary including but not limited to geographic location Federal Government contract labor categories and contract wage rates relevant prior work experience specific skills and competencies education and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI you will receive comprehensive benefits such as; healthcare wellness financial retirement family support continuing education and time off benefits.

The proposed salary range for this position is:

$76000 - 155700 USD

CACI is anEqualOpportunity Employer. All qualified applicants will receive consideration for employment without regard to race color religion sex pregnancy sexual orientation age national origin disability status as a protected veteran or any otherprotectedcharacteristic.

Required Experience:

IC


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