Remote- Systems Engineering -

Senior Systems Engineer

Candidates must be able to obtain and/or maintain a Department of Defense Top Secret Security Clearance as a condition and continuation of employment

A leading systems integrator is seeking a talented and mission-driven Senior Systems Engineer to support a large-scale digital infrastructure network design and deployment program in support of the U.Department of Defense.

This program delivers a secure, resilient, multi-enclave digital infrastructure supporting modern command-and-control operations. The network architecture spans Unclassified through TS/SCI environments and integrates advanced commercial and government technologies, including cloud computing, SD-WAN, enterprise cross-domain solutions, data distribution networks, scalable transport, and data link integration modules across globally distributed operational sites.

As a Senior Systems Engineer, you will serve as a key technical contributor on a system-of-systems engineering team, translating government requirements into actionable designs, supporting work package development, and ensuring seamless integration of foundational network capabilities across all security enclaves and operational environments. Your work will directly support mission-critical decision-making across modern defense operations.

Serve as a senior technical contributor on a system-of-systems engineering team supporting the planning, design, development, and integration of digital infrastructure network features and sub-features across major and minor releases.

Translate government-provided work packages into detailed systems engineering designs, Bills of Materials (BOMs), deployment procedures, and supporting technical documentation for foundational network capabilities, including cloud infrastructure, SD-WAN, enterprise cross-domain solutions, data distribution networks, scalable transport, and data link integration modules.

Perform systems engineering analysis and design activities across multiple security enclaves, ensuring designs meet government-defined operational requirements, technical objectives, and security standards.

Support the development and maintenance of system architecture artifacts, including interface control documents, system design documents, and technical baselines required for government-led configuration control boards.

Conduct trade studies, technical assessments, and engineering analyses to evaluate design alternatives and inform program decision-making.

Collaborate with network managers, design work package teams, test engineers, cybersecurity personnel, and government stakeholders to deliver integrated, deployment-ready system designs.

Support the development and review of SD-WAN orchestration policies, network routing architectures, firewall configurations, DNS designs, and encryption architectures.

Apply Infrastructure-as-Code (IaC) and Configuration-as-Code (CaC) principles to support automated provisioning, configuration management, and remote update capabilities.

Identify and architect dependencies between the digital infrastructure network and enterprise IT or base infrastructure, developing mitigation strategies to reduce integration risk.

Support quarterly release planning events and 90-day release cycles, contributing to feature decomposition and work package planning.

Participate in technical interchange meetings, design reviews, and program milestone events, providing senior-level engineering recommendations.

Mentor junior systems engineers and cross-functional team members, establishing engineering standards, design best practices, and high-quality technical documentation.

Bachelor's degree in Systems Engineering, Electrical Engineering, Computer Science, Information Technology, or a related technical field with 8+ years of relevant experience, or a Master's degree with 6+ years of relevant experience.

• 5-8 years of experience in a senior systems engineering role supporting large-scale defense systems integration, network infrastructure, or command-and-control programs.
• Demonstrated experience performing systems engineering design, analysis, and documentation for complex systems-of-systems environments.
• Strong understanding of network architecture concepts including SD-WAN, cloud infrastructure, cross-domain solutions, and multi-enclave security environments.
• Experience developing systems engineering artifacts such as architecture documents, interface control documents, BOMs, and deployment procedures.
• Familiarity with defense systems engineering frameworks and compliance processes (e.g., Ability to travel up to 25% to CONUS and OCONUS locations.

INCOSE Certified Systems Engineering Professional (CSEP) or Associate Systems Engineering Professional (ASEP).

Cloud infrastructure certifications (e.g., AWS).

Cisco, VMware, Palo Alto).

Familiarity with secure government cloud environments and multi-level security architectures.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Everforth Apex uses a virtual recruiter as part of the application process. Message and data rates may apply. You can reply STOP to cancel and HELP for help. You can access our privacy policy at

Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or View phone number on click.appcast.io. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

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