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John Warren

@johnwarren

Security and operations leader delivering faster incident resolution, stronger risk controls, and measurable incident cost reductions.

United States
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What I'm looking for

I’m looking for a leadership role in incident, problem, and risk operations where I can modernize runbooks and observability, drive RCA-driven remediation, and uphold HIPAA/NIST/PCI/GDPR/Zero Trust with measurable impact.

I’m a Security and operations leader with 11+ years of experience in Incident Management, Problem Management, and Risk Operations across global, compliance-driven environments. I’ve delivered measurable results—about a 50% reduction in major incidents, 75% faster resolution times, and a 25% decrease in breach-related costs—by modernizing processes and improving proactive threat detection.

I lead 24/7, follow-the-sun major incident response and partner cross-functionally to drive RCA, post-incident reviews, and long-term remediation. With deep observability and SIEM experience (Datadog, AppDynamics, Splunk, IBM QRadar, and more) and security automation using Python, PowerShell, Ansible, and Bash, I help teams align to HIPAA, NIST, PCI DSS, GDPR, Zero Trust, FISMA, and ISO 27001.

Experience

Work history, roles, and key accomplishments

HI

Incident Manager

HireRight

Apr 2025 - Mar 2026 (11 months)

Expanded problem management responsibilities and drove a ~50% year-over-year reduction in S1/S2 incidents by redesigning the incident response model, including escalation paths, runbooks, and post-incident review cadences. Led 24/7 global major incident management and modernized observability (AppDynamics to Datadog) to improve monitoring coverage and reduce MTTD.

TS

Risk Operations Analyst

TikTok US Data Security

Apr 2024 - Mar 2025 (11 months)

Led e-commerce risk assessments, achieving a 35% reduction in platform incidents by improving detection coverage for high-risk transaction patterns. Reduced MTTR by 30% through automated threat detection workflows and strengthened incident response playbooks and governance for blockchain and digital payment systems.

AH

IT Service Desk Team Lead

Acadia Healthcare

Jun 2022 - Nov 2023 (1 year 5 months)

Oversaw IT service delivery for 40,000+ users in a HIPAA/NIST-regulated multi-site environment, maintaining consistent SLA achievement. Reduced incident resolution times by 88% after implementing Zero Trust architecture and led/mentored a distributed service desk team with benchmarks, escalation protocols, and quality review processes.

AH

Service Desk Analyst II

Acadia Healthcare

Sep 2020 - Jun 2022 (1 year 9 months)

Managed HIPAA-compliant endpoint monitoring across 10,000+ devices, identifying and remediating vulnerabilities before escalation. Developed disaster recovery plans aligned with FISMA and ISO standards to support business continuity for critical systems.

Education

Degrees, certifications, and relevant coursework

Western Governors University logoWU

Western Governors University

Master of Science, Cybersecurity and Information Assurance

Grade: GPA 3.95

Earned an M.S. in Cybersecurity and Information Assurance at Western Governors University in May 2024 (GPA 3.95).

Western Governors University logoWU

Western Governors University

Bachelor of Science, Network Operations and Security

Grade: GPA 3.90

Earned a B.S. in Network Operations and Security at Western Governors University in Dec 2020 (GPA 3.90).

TT

Tennessee College of Applied Technology

Associate of Science, IT Systems Coordinator / Computer Information Technology

Grade: GPA 3.85

Earned an A.S. in IT Systems Coordinator / Computer Information Technology at Tennessee College of Applied Technology in Apr 2018 (GPA 3.85).

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