Senior Software Systems Lead Security Clearance

Position: Senior Software Systems Lead with Security Clearance
MANTECH seeks a career and customer oriented Senior Software Systems Lead in Lexington Park, MD. This is a hybrid position with 4 days onsite and 1 day remote. This person will serve as the primary technical authority for a high-priority Department of Defense Modeling & Simulation (M&S) initiative. In this key personnel role, you will architect and guide innovative, scalable simulation platforms while acting as a Trusted Technology Advisor to government stakeholders.

This is an opportunity to shape the future of battlespace simulation through high-impact leadership, digital transformation, and advanced software systems design. Responsibilities may include but are not limited to:
* Act as the principal technical liaison between engineering teams and government stakeholders, advising on software strategy, procurement (GOTS/COTS), and performance to align mission needs with technical deliverables

* Direct top-level software architectures for real-time simulation and complex behavior modeling, providing infrastructure recommendations to maximize scalability and reduce lifecycle costs

* Lead the transition from legacy frameworks to cloud-native, Dev Sec Ops -enabled simulation platforms, ensuring alignment with contemporary digital engineering standards

* Oversee the integration of distributed simulation protocols (DIS, HLA, TENA) into the GRID-based Joint Simulation Environment (JSE) to facilitate seamless cross-domain interoperability

* Develop comprehensive simulation capabilities, including models, hardware interfaces, and user interfaces, utilizing C++ and modern development frameworks

* Mentor multi-disciplinary development teams while enforcing high standards for code quality, configuration management, and streamlined knowledge transfer through better documentation

* Define comprehensive test plan strategies and lead root-cause analysis for critical, system-level software issues to ensure robust performance and reliability

Minimum Qualifications
* Bachelor's degree in Computer Science, Computer Engineering, or related technical field

* 10+ years of progressively responsible experience in software engineering, including direct support to M&S initiatives

* Expertise with both on premise and cloud-based development environments (Azure and AWS)

* Expert-level proficiency in C++, with demonstrated experience designing and implementing high-performance simulation systems

* Hands-on experience using a wide variety of commercially available development tools such as the Atlassian Tool Suite (Jira, Confluence, Bitbucket), Git, and Microsoft Visual Studio

* Proven track record of leading digital transformation initiatives using Agile methodologies and CI/CD pipelines

Preferred Qualifications
* Experience with multi-level security environment development and deployment

* Experience utilizing cloud-based development environments and tools

* Direct experience supporting tactical aviation systems and distributed battlespace environments

* In-depth understanding of synthetic environment generation platforms such as NGTS, JSAF, or equivalent frameworks

* Strong communication skills with the ability to present complex engineering trade-offs to senior technical and non-technical audiences Clearance Requirements
* Must possess an active Top Secret clearance with current SCI eligibility

Physical Requirements
* Must be able to remain in a stationary position approximately 50% of the time

* Occasionally required to move throughout office spaces to access equipment, files, or interact with co-workers

* Must be able to effectively communicate with team members, leadership, and customers, including in presentation settings, and convey accurate technical information