New

Software Systems Engineer Architect SME (SW)

Modern Technology Solutions, Inc.
401(k)

Oct 14, 2026
MTSI is seeking an experienced Software Systems Engineer Architect SME to provide highlevel technical leadership within our customer's Software Branch. In this senior role, you will shape the vision, design, and implementation of advanced software system architectures that enable secure, scalable, and missionfocused capabilities across the full system lifecycle-from initial concept and architecture through development, integration, deployment, operations, and transition to sustainment. The successful candidate will serve as a trusted software architecture authority, representing the customer and driving the strategic design and integration of software solutions into complex, multisystem environments. Responsibilities include defining and maturing enterprise software architecture, developing modernization and integration strategies, establishing technical standards, ensuring compliance with applicable engineering policies and directives, and independently supporting the program office across all architectural planning, systems engineering, and technical execution activities. Key Responsibilities * Lead enterprise software architecture strategy and development, ensuring secure, scalable, and missionaligned solutions across the full system lifecycle. * Define, refine, and govern software architecture requirements, standards, patterns, and reference models that guide system design, development, integration, and operations. * Advise system owners, engineering teams, and leadership on architectural risks, technical impacts, performance considerations, interface dependencies, and compliance with applicable DoD and engineering standards. * Assess new software capabilities, architectural updates, and modernization initiatives; recommend and validate optimal software system architecture solutions. * Review, approve, and oversee architectural documentation including system architecture diagrams, interface control artifacts, enterprise reference models, modernization roadmaps, and integration architectures. * Lead and validate architectural reviews, design assessments, and system evaluations to ensure software environments, interfaces, and components meet mission, security, and performance requirements. * Prepare and deliver enterprise architecture assessments, modernization strategies, technical roadmaps, and recommendations to senior leadership and stakeholders. * Apply sound software engineering principles, modular design practices, automation approaches, and modern architectural patterns across all phases of development, integration, and deployment. * Evaluate software, network, and system architectures to identify scalability, resiliency, interoperability, and security considerations; recommend strategic mitigation and optimization approaches. * Provide expert architectural guidance to teams developing new mission applications or modernizing legacy systems, ensuring alignment with enterprise architecture goals and longterm system strategies. * Identify and resolve complex systemofsystems engineering and architectural challenges as new software capabilities are integrated into diverse mission and data environments. * Stay current on emerging software engineering technologies, architectural methodologies, design frameworks, and industry best practices to continuously evolve enterprise architecture strategy and capabilities. This position requires deep technical expertise, a strong understanding of advanced software architecture and systems engineering principles, and the ability to translate complex mission and technical requirements into secure, scalable, and resilient software solutions. If you are a motivated professional with a passion for shaping and delivering enterpriselevel software architectures, we encourage you to apply Qualifications: Possess a minimum of 20 years of relevant Department of Defense (DoD) work experience Have no less than three (3) years' experience in a Special Access Program (SAP) and/or Sensitive Compartmented Information (SCI) environment within the last eight (8) years Possess a Master of Arts/Master of Science/Master of Engineering MA/MS/ME degree (Years of experience may be considered in lieu of a master's degree). Experience and degree requirements must be in a field relevant to the functional area Clearance Requirements: Must possess an active DoD Top Secret (TS) security clearance with ability to obtain SCI U.S. Citizenship is required for this position, due to contract requirements. #LI-HP1 #DOG #SW Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security. Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 100% Employee Owned: We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year. Great Benefits - Most Full-Time Staff Are Eligible for: Starting PTO accrual of 20 days PTO/year + 10 holidays/year Flexible schedules 6% 401k match with immediate vesting up to $9k annually Semi-annual bonus eligibility (July and December) Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account Up to $10,000 in annual educational reimbursement Other company funded benefits, like life and disability insurance Optional zero deductible Blue Cross/Blue Shield health insurance plan Track Record of Success: We have grown every year since our founding in 1993. Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide. For more information about MTSI, please visit www.mtsi-va.com MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.