Software Engineer, Software Testing

Position

Software Engineer – Huntsville, AL (Contract with the U.S. Air Force GBSD/Sentinel program).

Develop, maintain, and enhance complex software systems for the GBSD/Sentinel mission, including processing‑intensive analytics, novel algorithms, large data set manipulation, real‑time systems, and business management interfaces. Work individually or as part of a team to review and test components for design compliance, resolve software defects, and contribute to system‑level design decisions.

U.S. Citizen with ability to obtain SAP access; active Secret clearance with investigation/adjudicated within the past 6 years.

Bachelor of Science in a STEM discipline.

0:
No experience required. 5 years for SWE 1, 10 years for SWE 2, 15 years for SWE 3. 4 additional years of experience may substitute for a bachelor’s degree.

• Software development in at least one object‑oriented language such as Java or C++.
• UI design and development experience or ability to interpret complex algorithms and requirements.
• Familiarity with Model‑Based Systems Engineering languages (SysML/UML) and concepts.

• Agile methodology, C/C++, Java/JS, real‑time processing threads, scheduling, synchronization, memory management.
• Experience with Atlassian tools (JIRA, Confluence).
• Full software lifecycle experience: specification, design, implementation, integration, debugging, maintenance.
• Safety‑critical and nuclear‑critical software development (DO‑178C, AFMAN 91‑119, DO‑330, etc.).
• Structured process‑driven environment, peer reviews, revision control, defect tracking, build release practices.
• Middleware & drivers (RTOS, Linux, VxWorks) and anti‑tampering (cryptographic, secure communications, logging, SW deployment).
• Git tooling.
• Automated testing: unit and integration testing, test frameworks, application and system verification.

• Voluntary Medical, Dental, Vision, with HSA or FSA options.
• Voluntary Life, Critical Illness, Accident, and Long‑Term Care insurance options.
• Group Term Life, Short‑Term and Long‑Term Disability benefits.
• Generous 401(k) match.
• Competitive PTO that graduates quickly with tenure.
• Other leave programs: holiday schedule, bereavement, maternity, jury, military duty.
• Mental health awareness programs.
• Tuition and professional development reimbursement.
• Recognition and awards programs.

Sentar is an affirmative action and equal opportunity employer, including M/F/Vets/Persons with Disabilities, and a VEVRAA Federal Contractor. We comply with all applicable laws and regulations and provide reasonable accommodations for qualified individuals with disabilities.