Senior Systems Infrastructure Engineer & Architect (Enterprise Mission Systems SME

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VT-ARC, a technical services and applied research company, has built an organizational culture marked by four primary values:
Teamwork, Integrity, Excellence, and Service. Integral to our success is our staff’s enthusiasm for solving tough problems by working together in teams to get the job done. We foster a culture where every employee’s contribution is valued and performed with integrity while maintaining a fun work environment. VT-ARC strives for excellence in all that is done for our clients, and such achievement is recognized through service/merit awards.

Moreover, we promote a sense of community larger than VT-ARC alone, where staff and institutional resources can be applied in service to our country.

We are proud to be the recipient of the Best Workplace in Defense Award by Emergent Magazine, an honor that recognizes companies with positive cultures that not only impact their people but also make a meaningful difference in the community.

You are a senior systems infrastructure engineer, enterprise systems architect, or mission infrastructure engineer with deep hands-on experience designing, deploying, and sustaining secure server, virtualization, directory, storage, management, and monitoring capabilities in complex environments.

You understand that systems engineering in classified and mission environments does not stop at installing servers. You know how identity, DNS, certificates, patching, hardening, backups, monitoring, logs, vulnerability scanning, network segmentation, firewall rules, management paths, and operational handoff all come together to make infrastructure supportable.

You are comfortable working across Windows, Linux, virtualization, storage, core infrastructure services, automation, cyber tooling, and network dependencies. You can translate architecture intent into buildable designs, deployment plans, validated configurations, and sustainment documentation.

You bring enough networking depth to work effectively with WAN/LAN engineers and cyber teams on subnetting, routing dependencies, ports and protocols, load balancers, proxies, firewalls, enclave boundaries, and troubleshooting across the system/network/security boundary.

VT-ARC is seeking a Senior Systems Infrastructure Engineer & Architect (Enterprise Mission Systems SME) to support enterprise systems engineering, secure infrastructure modernization, classified enclave implementation, and operational transition for mission-critical enterprise communications, network modernization, and cyber programs within TS/SCI environments.

This role is focused on systems infrastructure engineering across the full implementation lifecycle, from requirements interpretation and architecture input through detailed design, build, integration, hardening, automation, validation, documentation, and transition to operations.

The selected candidate will design, implement, and sustain secure enterprise systems capabilities across Windows, Linux, virtualization, directory services, DNS/DHCP/NTP, PKI/certificates, storage, backup and recovery, monitoring, patching, configuration management, and automation. The role will also coordinate closely with network and cyber teams to ensure systems are connected, secured, monitored, scanned, accredited, and operationally supportable.

Active Top Secret/SCI clearance is required.

• VT-ARC offers a competitive signing bonus for qualified candidates.

• Design, implement, integrate, maintain, and modernize secure enterprise systems infrastructure supporting classified, sensitive, multi-enclave, lab, test, and mission operating environments.
• Engineer Windows and Linux server environments, virtualization platforms, storage services, backup and recovery capabilities, monitoring tools, management services, and infrastructure automation capabilities.
• Implement and sustain core infrastructure services such as Active Directory/LDAP, Group Policy, DNS, DHCP, NTP, PKI/certificates, file services, authentication services, administrative access, and enterprise management services.
• Build and maintain virtualization and compute environments, including host configuration, virtual machine templates, golden images, resource allocation, clustering, high availability, capacity planning, performance tuning, and lifecycle management.
• Develop scripts and automation using Power Shell, Bash, Python, Ansible, Terraform, or similar tools to standardize provisioning, configuration, hardening, validation, reporting, remediation, and operational support workflows.
• Apply security hardening, DISA STIGs, patch management, vulnerability remediation, configuration baselines, system health checks, access controls, audit logging, and continuous monitoring practices across server and infrastructure environments.
• Coordinate network-dependent systems requirements, including IP…