Software Engineer, Senior

Overview SimTech, Inc., recognized as one of the 2026 Best Places for Working Parents , is seeking a Software Engineer, Senior to join our dynamic and diverse team in Huntsville, AL. This is an upcoming opening with opportunities for growth and professional development. SimTech offers a market leading compensation package with excellent benefits, work/life balance, outstanding retirement plan, career advancement and much more. The Software Engineer, Senior is responsible for developing, integrating, testing, and validating software applications. This role supports the design and implementation of scalable, high-performance solutions, including advanced mathematical and analytical algorithms, while ensuring code quality, data integrity, and maintainability. Responsibilities Provide software development for C++ and Python in the areas of model and tool development, integration, execution, test, analysis and V&V. Design and implement complex software in C++, CUDA, and Python as defined from 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. Minimum Qualifications & Education Requirements and Desired Skillsets 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 demonstrated relevant experience and development with C++, Python, and real-time graphics processor unit (GPU) programming experience. 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. Physical Description Employees in these positions will function in a general office/cubicle setting environment, and laboratory/testing setting using standard office equipment and various electronic testing equipment, including a computer, telephone, printers, video equipment, computer software, and testing equipment. Will interact in a general office setting environment with various personnel; participate in meetings and contribute to team success; deliver timely results and produce reports; receive and communicate information; may include telework. May function in a specialized laboratory/testing environment using electronic testing equipment, computer software, and complex systems. May move and test equipment of various weights. Laboratory environment may require use of protective equipment (PPE) including but not limited to safety glasses and protective hearing and footwear. May be expected to work varying shifts and hours to ensure successful operation of activities in the organization due to business demands; travel occasionally for assigned work. About SimTech, Inc. SimTech's mission is to be the most reliable and cost-effective provider of Signature Models, Simulations, Hardware, Software, Cyber solutions, and Test & Evaluation services. Established in 1983 by a team of experienced scientists and engineers, SimTech has a long history of delivering high-technology defense-oriented solutions. The company has been recognized as a "Best Place to Work" in 2020 and 2021, and as a "Best Place for Working Parents" in 2022-2026 by the Huntsville/Madison County Chamber of Commerce. SimTech offers an industry-leading comprehensive compensation and benefits package. Be a part of over 43+ years of excellence-join our team today! To learn more about our exceptional team and employee benefits, contact SimTech HR or visit for more information. Equal Employment Opportunity and Affine Action Employer SimTech, Inc. is an Equal Opportunity/Affirmative Action Employer. SimTech, Inc. is a committed EOE/Vet/Disabled employer. Simulation Technologies, Inc. (SimTech) is an Equal Employment Opportunity employer and provides reasonable accommodation for qualified individuals with disabilities and disabled veterans in its job application procedures. If you have any difficulty using our online system and you need an accommodation due to a disability, you may use the following email address, View email address on click.appcast.io and/or phone number View phone number on click.appcast.io) to contact us about your interest in employment with SimTech. 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. SimTech participates in E-Verify. #J-18808-Ljbffr