Software Test Engineer

Cimarron Software Services, Inc.; Houston (TX); On-site; USD 125,000 - 200,000; Full time

Benefits offered by this job

Major Medical and Hospitalization

401(k) with Company Matching

Paid Time Off (PTO) and Holiday Leave

Job summary

Cimarron Software Services, Inc. is seeking Software Test Engineers in Houston, TX to support the verification and validation of software for the Axiom Space Commercial Space Station. Candidates will engage in software verification, hardware/software integration, and system-level testing to ensure reliable performance under flight conditions. A Bachelor's Degree and 5+ years of experience in related roles are required. The position offers an excellent benefits package and a pay range of $125,000 to $200,000 per year.

Qualifications

• 5 or more years of related experience in software test, verification, or integration roles.
• Due to facility security requirements, only U.S. citizens or permanent residents are eligible for consideration.

Responsibilities

• Plan, develop, execute, and document software verification and validation test procedures.
• Support software test activities in prototype, simulation, and flight environments.
• Collaborate closely with software developers, systems engineers, and subject matter experts.

Skills

Software test, verification, or integration roles

C, C++, Rust, VHDL, Python in a Linux environment

Good written and verbal communication skills

Education

Bachelor of Science in related technical discipline

Tools

JIRA

Git

Confluence

Job description

Software Test Engineer

Location: Houston, TX 77058 (Primary)

Job Type: Full-time

Number of Hires: 2

Education: Bachelor's Degree

Pay Range: $125,000 – $200,000 per year

Position Introduction and Key Duties

Cimarron is seeking Software Test Engineers to support the verification, validation, and integration of software for the Axiom Space Commercial Space Station in Houston, TX. In this role, you will focus on software verification testing, hardware/software integration, and system-level test activities to ensure flight‑critical software performs reliably in prototype, simulation, and flight environments. The selected candidates will play a key role in supporting commercial human spaceflight modules through rigorous test execution and analysis.

Key Duties

• Plan, develop, execute, and document software verification and validation test procedures for flight and ground software systems.
• Perform hardware/software integration testing across systems such as propulsion, command & data handling (C&DH), environmental control and life support systems (ECLSS), guidance, navigation and control (GN&C), caution and warning (C&W), power, networks, and datalinks.
• Support software test activities in prototype, simulation, and flight environments, including anomaly identification, troubleshooting, and resolution support.
• Collaborate closely with software developers, systems engineers, and subject matter experts throughout the software test lifecycle.
• Support configuration control and disciplined test documentation, reporting, and traceability.

Required Skills, Experience, and Education

• Due to facility security requirements, only U.S. citizens or permanent residents are eligible for consideration at this time.
• Ability to complete a pre-employment background check and drug screening, which will include but is not limited to testing for marijuana use.
• 5 or more years of related experience in software test, verification, or integration roles.
• Experience working with software written in languages such as C, C++, Rust, VHDL, and Python in a Linux environment.
• Good written, verbal, and interpersonal communication skills.
• Bachelor of Science in Electrical Engineering, Aerospace Engineering, Mechanical Engineering, Computer Engineering, Computer Science, Computer Information Systems, or another related technical discipline.

Desired Skills, Experience, and Education

• Flight software experience.
• Experience with Scrum and the Agile framework using tools such as JIRA.
• Experience with Git, Model Based Systems Engineering (MBSE), JAMA, and Confluence.
• Comfortable with common embedded communication protocols such as UART, SPI, I2C, USB, RS-232/422/485, and Ethernet.
• Experience working with networking protocols such as TSN, UDP, and TCP.
• Familiarity with software development and verification standards such as DO-178C.
• Experience reviewing or developing UML artifacts such as use-case diagrams, activity diagrams, and timing diagrams.

EEO Statement

Cimarron is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or any other characteristic protected by federal, state, or local law.

Benefits

Cimarron offers an outstanding benefits package including:

• Major Medical and Hospitalization
• Vision Care
• Preventive Care
• Ancillary Benefits
  • Life Insurance and AD&D
  • Short-Term Disability Insurance
  • Voluntary Long-Term Disability Insurance
  • Voluntary Additional Life and Dependent Life Insurance
• 401(k) with Company Matching
• Flexible Spending Accounts
• Direct Deposit
• Other Benefits
  • Paid Time Off (PTO) and Holiday Leave
  • Education Reimbursement
  • Wellness Program