Open to opportunities

William Lacy

@williamlacy1

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Infrastructure engineer delivering secure, reliable cloud and virtualization operations.

United States

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What I'm looking for

I’m looking to support mission-critical cloud and infrastructure environments—owning patching, hardening, monitoring, and incident response. I want to reduce operational risk through reliable automation with Terraform and strong security controls.

I’m an infrastructure professional with 16+ years supporting mission-critical environments, spanning Windows, Red Hat Enterprise Linux, and VMware/virtualization. I bring hands-on experience across hybrid infrastructures and proactive operational support in secure environments.

I specialize in AWS and Azure operations, using Terraform and ARM Templates to build and manage secure infrastructure (IAM, VPC, EC2, CloudWatch, CloudTrail, and EKS). I focus on troubleshooting, patch management, system hardening, monitoring, incident triage, and root-cause analysis to improve reliability and reduce operational risk.

In prior roles, I maintained 97%+ uptime through continuous monitoring, patching, capacity planning, and resilience improvements. I also lead security-oriented work like SIEM ingestion tuning, RBAC enforcement, VLAN segmentation and ACL policy management, and vulnerability remediation—supported by CompTIA Security+, CompTIA Linux+, and AWS certifications (solutions architect associate, cloud practitioner), with CCSP in progress.

Experience

Work history, roles, and key accomplishments

Lead Systems/Network Administrator

Tactical Engineering & Analysis

Jan 2018 - Jan 2026 (8 years)

Administered classified and unclassified Windows/Linux infrastructure in a VMware environment, maintaining 97%+ uptime through proactive monitoring, patching, and resilience improvements. Performed SIEM event monitoring and incident support, enforced RBAC/VLAN segmentation/ACL policies, and coordinated patching and vulnerability remediation across security enclaves.

Windows Server Linux Red Hat Enterprise Linux VMWare SIEM Incident Response Root Cause Analysis RBAC VLAN Network ACLs Patch Management Vulnerability Remediation Capacity Planning Security Hardening

Systems Administrator

Absolute Business Corp

Jan 2017 - Jan 2018 (1 year)

Administered secure enterprise infrastructure for approximately 330 users, including Microsoft Exchange, Active Directory, VMware/vCenter, and Windows/Linux servers. Managed patching and upgrades, backups and firewall management, handled identity and Group Policy administration, and troubleshot issues using root-cause analysis while enforcing RBAC/VLAN/ACL access controls.

Microsoft Exchange Server Active Directory VMWare Vcenter Administration Windows Server Linux Administration Patch Management software upgrades Firewall Administration Group Policy Security Hardening Troubleshooting Root Cause Analysis RBAC VLAN Network ACLs

Information Systems Technician

U.S. Navy

Jan 2008 - Jan 2016 (8 years)

Provided Tier 1–2 IT support for globally distributed shipboard and shore operations in mission-critical environments. Maintained cryptographic devices (including scheduled key rotation and controlled key destruction) and supported modernization/upgrades and security inspections by verifying configurations and helping remediate findings.

IT Support Tier 1 Support Key Rotation Inspections remediation