John Sim
Amado,AZ
Summary
Dynamic Senior Director with extensive experience at the United States Air Force, excelling in Agile Program Management and stakeholder engagement. Spearheaded $7 billion in IT modernization, enhancing cybersecurity frameworks and achieving significant cost savings. Proven leader in cross-functional team collaboration, driving strategic initiatives that safeguard critical assets and optimize digital infrastructure.
Overview
21
21
years of professional experience
Work History
Senior Director, IT and Cybersecurity Operations
United States Air Force
Davis-Monthan AFB, Arizona
06.2023 - Current
- Governs cybersecurity and IT program management & operations, and staffing to enable $4 billion aircraft fleet operations and safeguard over $8 billion in digital and physical assets across 64 organizations.
- Manages $650 million Digital Technology (DT) modernization programs in six global regions; leveraged EVMS to monitor cost, schedule, & performance metrics, ensuring strategic alignment & delivery of mission-critical capabilities.
- Executes strategic DT roadmap, optimizing scope, cost, and schedule performance for global initiatives; drives infrastructure resiliency and cybersecurity readiness for $140 million network.
- Leads cross-functional collaboration across 38 agency stakeholders, AOP for $5 million IT modernization to ensure consistent IT service delivery, and policy compliance, supporting 2,900 missions and medical care for 46,000 patients.
- Leads a $20 million cybersecurity program, applying RMF and configuration management to resolve 423K vulnerabilities, manages capital and expense budgets for strategic, cost-effective execution.
- Leads staffing and force development across 26 agencies, guiding the development of 426 Airmen and evaluating the performance of 179 personnel to sustain agile operations and enable resilient network services for 11,000 users.
Senior Director, IT and Cybersecurity Operations
United States Air Force
Hill AFB, Utha
11.2021 - 05.2023
- Oversaw staffing and 850 personnel performance across 50 departments to maintain a $2 billion IT, cybersecurity, and technology systems, supporting enterprise systems, operations, and service management in three regions globally.
- Led strategic partnerships across 50 agencies, streamlining 212 requirements, procurement efforts, and technical solutions for $353 million DT initiatives; applied EVMS to ensure performance, cost, and schedule alignment.
- Enhanced service management and release readiness through SLA/KPI implementation for 22,000 users; partnered across 14 organizations to integrate $84 million infrastructure improvements.
- Oversaw the $66.1 million Program AOP to track capital and expense spending, and ensure compliance with security and infrastructure regulations through effective implementation of RMF strategies.
- Directed a 49-member cross-functional response team in the recovery of a downed aircraft, coordinating efforts of 105 personnel to ensure safe retrieval of both pilot and $110 million in assets.
Director, IT and Cybersecurity Operations
United States Air Force
JB MDL, New Jersey
06.2019 - 10.2021
- Oversaw $975 million in cybersecurity and IT operations across multiple sites for 22,000 users. Led $365 million in technology initiatives, advancing digital infrastructure, multi-domain integration, and global command services for 12,000 operations.
- Managed staffing across three divisions and 21 work centers, and workforce development of 235 personnel, delivering secure, scalable IT systems, modernizations and services for five regional sites.
- Led IT project management for a $255 million enterprise infrastructure upgrade, partnering with engineering and proposal teams to capture requirements, develop executable plans, and ensure cross-functional program support.
- Secured 33 new staff authorizations and postured hiring for on-time integration of KC-46A systems into operations, aligning $1 billion in assets and advancing global mobility and support readiness.
- Managed $16 million AOP emergency infrastructure and readiness initiatives, including a cybersecurity training program for 400 professionals and pandemic-response network deployment for 3,200 personnel.
- Led DT security compliance for 19,000 critical assets, applying RMF principles and automating patching and remediation to eliminate 423,000 vulnerabilities and safeguard $9 billion in assets.
Senior Manager, Command & Control Systems
United States Air Force
Scott AFB, Illinois
02.2018 - 05.2019
- Directed global cybersecurity IT and operations across 17 programs, 11 networks, and four data centers supporting 134,000 users. Managed $8 billion in assets and led modernization across 175 sites, improving network infrastructure resiliency.
- Supervised 265 personnel in the sustainment of 10 cybersecurity and IT portfolios valued at $650 million, enabling robust cyber capabilities for 19,000 users in three locations.
- Executed $3 billion in IT infrastructure upgrades to optimize data center operations, enhancing 137 critical systems to support 5,500 global air operations to transport 27,000 tons of cargo and 64,000 passengers.
- Led AOP for $255 million cybersecurity initiative, eliminating 23,000 network threats and protecting $9 billion in assets.
- Guided a $468 million enterprise information system serving 96,000 annual global operations, optimizing network and readiness across multiple agencies.
- Directed $1 billion in digital modernization decision-making efforts, network centralization, and $14 million in Agile IT project execution for secure communications upgrades, generating $156 million in cost savings.
Global Program Manager, IT and Cyber Plans
United States Air Force
Scott AFB, Illinois
05.2015 - 01.2018
- Directed global IT modernization and cybersecurity integration across 25 programs, 11 enterprise network risk management, and four global data centers supporting over 840,000 personnel.
- Oversaw $7 billion in IT and communications infrastructure, leading modernization project executions and cybersecurity risk reduction to safeguard 2,000 systems and sustain services for 31,000 users.
- Championed a $650 million data center consolidation, cloud services, and a $560 million cyber platform integration across 128 sites, reducing redundancies and enhancing service delivery for 600,000 customers.
- Orchestrated the $50 billion transition of a global medical network, ensuring continuity of care for 10 million patients while generating $918 million in long-term cost savings.
- Delivered a $54 million bandwidth expansion across five regions, quadrupling connection speeds and improving enterprise-wide communication efficiency.
Manager, Information Technology
United States Air Force
Various Locations
09.2004 - 04.2015
- Led 24/7 enterprise IT operations supporting command and control systems in eight countries. Managed $10 billion in assets, delivering secure telecommunications, air traffic control systems, and cybersecurity and infrastructure for 150,000 global users.
- Directed response efforts for 250,000 network events and 5,000 service interruptions, stabilizing 2,700+ communication circuits supporting 200,000 global operations.
- Established preventive maintenance plans for cybersecurity compliance and network operations across 20 international sites, securing an $8 billion enterprise network and safeguarding against emerging threats.
- Provided executive telecom support for Presidential travel and White House missions, enabling secure communications across 58 agencies and high-priority operations.
- Sustained a $90 million VoIP network infrastructure, maintaining 90,000 circuits, and video communications across U.S. and Korean theaters.
Education
Bachelor of Science - Computer Science
Brooklyn College
CompTIA Security+ CE -
ITIL -
PMP - (pursuing)
Cybersecurity and Cyberspace Operations
Skills
- Agile Program Management
- EVMS
- AOP & Financial Oversight
- Strategic Roadmap Development & Execution
- Stakeholder Engagement
- Change Leadership
- Digital Infrastructure & Lifecycle Modernization
- Cybersecurity Frameworks
- Cross-Functional Team Leadership
- Risk & Compliance Management
Security Clearance
Active Top Secret / SCI
Timeline
Senior Director, IT and Cybersecurity Operations
United States Air Force
06.2023 - Current
Senior Director, IT and Cybersecurity Operations
United States Air Force
11.2021 - 05.2023
Director, IT and Cybersecurity Operations
United States Air Force
06.2019 - 10.2021
Senior Manager, Command & Control Systems
United States Air Force
02.2018 - 05.2019
Global Program Manager, IT and Cyber Plans
United States Air Force
05.2015 - 01.2018
Manager, Information Technology
United States Air Force
09.2004 - 04.2015
Bachelor of Science - Computer Science
Brooklyn College
CompTIA Security+ CE -
ITIL -
PMP - (pursuing)
Cybersecurity and Cyberspace Operations
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