Software Engineer, Senior

Overview

Sim Tech, Inc., recognized as one of the 2026 Best Places for Working Parents, is seeking a Senior Software Engineer to join our dynamic and diverse team in Huntsville, AL. This upcoming opening provides opportunities for growth and professional development. Sim Tech offers a market‑leading compensation package with excellent benefits, work/life balance, outstanding retirement plan, career advancement and much more.

• Provide software development for C++ and Python in model and tool development, integration, execution, test, analysis and V&V.
• Design and implement complex software in C++, CUDA, and Python as defined by an architectural definition, ensuring efficiency, scalability, and maintainability.
• Maintain data integrity and optimize code for distributive and/or parallel processing.
• Implement advanced mathematical and analytical solutions required for calculations, transformations, and processes defined by specifications.
• Apply expertise in software engineering to support design, development, testing, and deployment of assets.
• Evaluate objectives and assignments, select appropriate engineering and programming techniques, and demonstrate sound judgment in adapting solutions.
• Other responsibilities as assigned.

• Bachelor of Science Degree or Graduate Science Degree in Computer Science, Computer Engineering, Math, Physics or Engineering.
• Minimum of 10 years of professional experience in software development, software design, and Modeling & Simulation (M&S) environments.
• 3–5 years of demonstrated experience and development with C++, Python, and real‑time graphics processor unit (GPU) programming.
• Experience with GPU programming and parallel processing technologies, including CUDA.
• Demonstrated experience developing, integrating, testing, and validating software applications and tools.
• Experience implementing complex mathematical algorithms, analytical models, and data processing solutions.
• Proficiency working in Linux‑based development environments.
• Experience with software configuration management, version control systems, and collaborative development processes.
• Strong understanding of software architecture, object‑oriented design principles, and software development life cycle (SDLC) methodologies.
• Experience supporting Department of Defense (DoD), Missile Defense Agency (MDA), aerospace, or defense‑related programs.
• Experience developing high‑performance computing (HPC) applications and optimizing software for distributed and parallel processing environments.
• Strong analytical, problem‑solving, and troubleshooting skills.
• Excellent written and verbal communication skills with the ability to work effectively in multidisciplinary teams.
• Experience mentoring junior engineers and providing technical leadership on software development efforts.
• U.S. Citizenship with Active Secret Security clearance and ability to maintain the designated security clearance level is required.

Employees in this position will function in a general office/cubicle setting and laboratory/testing environment using standard office equipment and various electronic testing equipment. Work may include telework, varying shifts, and occasional travel as required by business demands.

Sim Tech, Inc. is an Equal Opportunity/Affirmative Action Employer and provides reasonable accommodation for qualified individuals with disabilities and disabled veterans. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, genetic information, citizenship, ancestry, marital status, protected veteran status, disability status or any other status protected by federal, state, or local law.

Sim Tech participates in E‑Verify.