Senior Computer Systems Engineer/Architect

All hired employees are expected to have experience with Microsoft Copilot and / or an approved equivalent AI solution. Description Data Systems Analysts, Inc. (DSA) has an opening for a Senior Computer Systems Engineer/Architect as a Key Personnel to support the Organizational Messaging Service (OMS) National Gateway Centers’ (NGCs) Command and Control (C2) Messaging Interoperability mission. This role provides enterprise systems engineering, architecture development, and modernization leadership to sustain and enhance OMS backbone and support systems, ensuring reliable, secure, interoperable messaging services for the DoD, the Intelligence Community (IC), other U.S. Government users, and allied/coalition partners. The successful candidate will lead the design, documentation, and modernization of enterprise National Security Systems (NSS) architectures, producing technical architecture products that guide implementation, integration, interoperability, resiliency, and lifecycle modernization across mission-critical messaging environments. Required Qualifications All hired employees are expected to have experience with Microsoft Copilot and/or an approved equivalent AI solution. Active DoD Top Secret Clearance with SCI Eligibility. Current Security+ Certification. Knowledge of and ability to demonstrate proficiency using AI to support research and improve engineering workflows. Bachelor of Arts/Bachelor of Science (BA/BS) in Information Technology, Computer Science, Systems Engineering, or a related technical discipline. Additional three years of experience in lieu of degree is acceptable. Minimum of eight (8) years of experience architecting, designing, implementing, and modernizing enterprise National Security Systems (NSS) within DoD or Intelligence Community environments. Must demonstrate a strong engineering background supporting high-visibility systems that transmit worldwide, including ships at sea. Demonstrated experience producing enterprise architecture artifacts, including logical and physical architecture diagrams, technical design documentation, interface documentation, implementation strategies, engineering design packages, and modernization roadmaps. Experience translating operational and mission requirements into enterprise technical architectures and engineering solutions. Experience performing architecture trade studies, technical assessments, engineering analyses, and technology modernization initiatives. Candidate must hold an IAT II qualified certification (example: Security+). Experience with Red Hat Enterprise Linux. Working knowledge of DoD, Intelligence Community, and Joint interoperability requirements for National Security Systems. Candidate must demonstrate exceptional attention to detail. Candidate must possess excellent communication, presentation, and technical writing skills. Skilled in developing and maintaining SOPs and TTPs. Clearance Required Candidate must have a current Top Secret clearance and be able to obtain SCI clearance. Desired Qualifications Knowledge of the use of C2 messaging in the DoD. Experience modernizing legacy National Security Systems (NSS). Experience designing enterprise architectures aligned with Zero Trust principles, Identity, Credential, and Access Management (ICAM), Cross-Domain Solutions (CDS), mission assurance, high availability, and resiliency. Experience supporting enterprise architecture reviews, technical interchange meetings, engineering review boards, or design reviews. Experience with DoDAF or comparable enterprise architecture methodologies is desired. Key Responsibilities Identify and refine mission requirements and coordinate buy-in with key stakeholders. Develop enterprise technical architectures and architectural laydowns that translate mission requirements into implementable engineering solutions. Produce and maintain enterprise architecture artifacts, including logical and physical architecture diagrams, interface documentation, technical design pa…