Senior Infrastructure & Security Engineer

EnSafe•Memphis, TN

11h•Onsite

About The Position

EnSafe is seeking a full-time Senior Infrastructure & Security Engineer to join their IT team in Memphis, TN. This position will support all EnSafe offices across the U.S. and Canada. The role serves as the lead technical resource for infrastructure and security operations, working closely with the Director of IT to support and enhance the systems that keep the business running securely and efficiently. The IT team supports a regulated environment that includes federal contract work governed by frameworks such as CMMC and DFARS. This is an opportunity to play a meaningful role in maintaining and advancing systems that directly support important projects and clients. The team is lean and highly collaborative, ensuring contributions are visible, valued, and impactful. The company fosters creativity, collaboration, a supportive culture, and professional development.

Requirements

9 or more years of progressively responsible IT experience, with at least three years in a role that combines infrastructure ownership and enterprise security.
Microsoft enterprise stack depth: Active Directory, Entra ID, Azure, Microsoft 365, Intune.
Hands-on EDR operations experience, ideally CrowdStrike Falcon.
Hands-on SIEM operations experience, ideally SumoLogic.
Working knowledge of NIST SP 800-171 and 800-53, including knowledge of CMMC Level 2 and DFARS.
Working network competence - enough to support Fortinet, VPN, segmentation, and basic firewall work during the gap before a dedicated Senior Network Engineer joins the team.
Scripting fluency in PowerShell, Python, or both.
Security+, Network+, or a Microsoft equivalent certification.
Strong written and verbal communication - the ability to translate technical work for non-technical stakeholders, and the willingness to do it.

Nice To Haves

Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field.
CISSP, CISM, CCSP, CISA, CCP, CCA, or FedRAMP certifications.
Experience in federal or DIB-regulated environments.
Mergers and acquisitions integration experience.
Experience supporting AI governance, data loss prevention, or insider risk programs.

Responsibilities

Own infrastructure operations across servers, storage, Active Directory, Entra ID, Microsoft Azure, and on-prem identity.
Run the security operations stack day to day, including CrowdStrike Falcon (EDR), SumoLogic (SIEM), Microsoft Defender, Microsoft Purview, and endpoint protection tooling.
Manage and tune vulnerability management, alert triage, and incident response workflows in coordination with the Director of IT.
Support the implementation, maintenance, and technical operation of security controls required by EnSafe's CMMC and NIST compliance programs.
Support network operations - Fortinet, WAN, Cisco VPN, segmentation.
Lead infrastructure and security projects end-to-end, from requirements through implementation and documentation.
Manage vendor relationships for infrastructure and security platforms, including renewals, contract review with EnSafe’s contracting team, escalations, and ongoing performance.
Contribute to EnSafe’s AI governance work as part of a cross-functional team.