Sr. Infrastructure Engineer

Purpose and Impact:

Come be a part of an exciting and ever-changing program that provides a comprehensive range of state-of-the-art solutions and hands-on assistance in designing, implementing, managing, and sustaining operations across various network environments in Columbia, MD for our customer.

We provide an environment that fosters and supports innovation and valuing “outside-the-box” thinking to solve complex problems. There are several training opportunities for team members that want to learn new technologies and stay current with their technical skillset. We are a highly technical group and nurture growth, with a technical culture of cross-trained teammates with opportunities to develop additional skillsets.

8hrs / day, 5 days per week, all onsite. Occasional after hours work for system maintenance.

The Senior Infrastructure Engineer serves as the technical lead for the organization's enterprise infrastructure, responsible for the architecture, implementation, operation, and continuous improvement of compute, storage, network, virtualization, and identity management platforms. This position provides strategic and operational leadership for critical infrastructure services across a variety of classified networks, establishes engineering standards, drives modernization initiatives, and ensures the reliability, security, and scalability of systems supporting customer operations.

The role requires extensive hands‑on technical expertise, cross‑functional collaboration, and the ability to lead complex projects and maintenance activities in a secure enterprise environment.

• Design, implement, administer, and maintain enterprise infrastructure systems including Cisco UCS, Microsoft Active Directory, enterprise storage platforms, Windows Server environments, and core network infrastructure.
• Architect, deploy, and support network solutions including routing, switching, segmentation, and secure communications across multiple classified environments.
• Develop and maintain infrastructure standards, engineering best practices, system baselines, and technical roadmaps.
• Lead infrastructure modernization efforts, technology refresh projects, migrations, and lifecycle management activities.
• Manage enterprise storage solutions, data protection strategies, backups, disaster recovery capabilities, and capacity planning initiatives.
• Administer enterprise identity and authentication services including Active Directory, Group Policy, DNS, DHCP, and file services.
• Plan and execute system upgrades, firmware updates, patches, maintenance activities, and change management procedures.
• Troubleshoot complex infrastructure issues, perform root cause analysis, and implement corrective actions to improve operational stability and performance.
• Collaborate with cybersecurity personnel to ensure compliance with security requirements, vulnerability remediation efforts, STIG implementation, and system hardening activities.
• Evaluate emerging technologies and provide technical recommendations for infrastructure improvements and future state architectures.
• Develop and maintain technical documentation including architectures, diagrams, procedures, standards, and operational runbooks.
• Provide senior‑level technical guidance and mentoring to infrastructure personnel and serve as an escalation point for complex technical issues.
• Support planned after‑hours maintenance windows and emergency response efforts to maintain system availability and operational readiness.

Standard working environment

• 10+ years of progressive
  experience designing, implementing, and supporting enterprise‑scale infrastructure environments, including compute, storage, networking, virtualization, and identity services.
• Expert‑level knowledge of Cisco UCS infrastructure, including architecture, administration, lifecycle management, firmware maintenance, capacity planning, and performance optimization in highly available enterprise environments.
• Strong experience with enterprise virtualization platforms,…