Sr. Systems Engineer

Company Overview Dignitas Technologies, a By Light company, offers a wide range of services in the military modeling, simulation, and training (MS&T) industry from research efforts advancing simulation technologies to large acquisition contracts. Dignitas specializes in system and software analysis, design, development, testing, fielding, and courseware for Live, Virtual, and Constructive (LVC) training applications. By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide. Position Overview The Senior Systems Engineer will play a critical role in the planning, development, and execution of delivery orders (DOs), contributing both as a technical leader and hands-on engineer. This individual will be responsible for guiding systems engineering efforts across the full lifecycle, from initial concept and requirements development through testing, verification, and final delivery. This role requires close collaboration with internal teams and government stakeholders and may involve occasional travel to customer sites or test events. A hybrid work environment is possible when not required to be on-site for customer meetings or test events. The program reserves the right to require on-site work if program execution and success dictates. This is a full-time position. Days and hours of work are typically Monday through Friday, 9:00 a.m. to 5 p.m. Occasional evening and weekend work may be required as job duties demand. Responsibilities Lead and support the development of delivery orders (DOs) from initiation through completion on military simulation system applications Analyze, decompose, and define systems-level requirements aligned with customer needs Design system architectures and ensure integration across multiple subsystems Develop and execute system verification and validation plans Coordinate and participate in milestone testing events with government customers Coordinate, develop, and deliver technical CDRL documentation in accordance with project DD-1423 and DID requirements Coordinate and direct project staff to develop operations, maintenance, and troubleshooting scenarios Ensure technical performance, quality, and compliance with contractual requirements Collaborate with cross-functional teams including software, graphics, and program management Serve as the primary technical interface with customers, stakeholders, and end users — building and maintaining relationships throughout the project lifecycle Organize and conduct integration events, technical briefings, and planning events for audiences ranging from instructors and subject matter experts (SMEs) to requirements owners and program leadership Identify risks and develop mitigation strategies throughout the system lifecycle Provide technical leadership and mentorship to junior engineers Required Experience/Qualifications Bachelor's degree in Engineering, Computer Science, or a related technical field 10+ years of experience in systems engineering or related discipline Demonstrated experience with systems engineering lifecycle processes (requirements, design, integration, test, and verification) Experience with AGILE development Certified Scrum Product Owner or Certified Scrum Master is a plus Experience with development in high fidelity game engines (Unity Preferred) MS Office applications including MS Project Experience working with government customers and understanding of DoD acquisition processes Strong analytical, problem-solving, and communication skills Ability to lead technical efforts and manage competing priorities Preferred Experience/Qualifications Experience with model-based systems engineering (MBSE) tools and methodologies Familiarity with systems engineering standards (e.g., INCOSE, ISO/IEC/IEEE 15288) Prior experience supporting defense or aerospace programs Special Requirements/Security Clearance Ability to obtain a Security Clearance