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Delivering Today What Tomorrow Requires.

National security, economic competition, and technological innovation no longer operate in separate lanes—they converge in a single contested landscape. Quantum Leap excels at that intersection. We understand how domains, technologies, and capabilities converge, allowing us to invest ahead of a defined need and perform at the speed required to deliver lasting, meaningful outcomes.

Our purpose is straightforward: protect our nation's strategic advantage by developing exceptional capabilities today for tomorrow's challenges.

Founded
2019
HQ
Leesburg, VA
Focus
Defense • Technology • Innovation
Differentiator
Capabilities Ahead of Need
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True to our name, Quantum Leap enables clients to move beyond incremental improvements and achieve quantum leaps in performance, readiness, and resilience.

LEADERSHIP

ExecutivE TEAM
03

JIM MILLER

Founder & CEO
PERSONNEL FILE
NAME
JIM MILLER
Role
Founder & CEO
Expertise
Strategic Foresight • Transformational Visionary • Engineering Excellence • Outcome-Driven Execution
CREDENTIALS
25+ Years National Security Leadership • Founded & Scaled Four Defense Technology Companies • Technology Innovation with National-Level Programs

JUSTIN COOK

Chief Technology Officer
PERSONNEL FILE
NAME
JUSTIN COOK
Role
Chief Technology Officer
Expertise
Clandestine & Technical Ops • Cyber • PRC-Focused Counterintelligence • AI/GPU • Complex Integration
CREDENTIALS
National Intelligence Award • CJCS & Director CIA Honors for Generational Impact to National Security • Executive Leadership in Intelligence Operations, CI & Defense Tech

BRYAN MCCARTHY

Chief Operating Officer
PERSONNEL FILE
NAME
BRYAN MCCARTHY
Role
Chief Operating Officer
Expertise
Business Operations • Cross-Functional Team Management • Disciplined Execution at Scale
CREDENTIALS
U.S. Army Officer (Ret.) • Multiple Forward-Deployed Leadership Roles • Organizational Growth & Operational Alignment

ED RYAN

Chief Financial Officer
PERSONNEL FILE
NAME
ED RYAN
Role
Chief Financial Officer
Expertise
Corporate Finance • Governance & Compliance • Financial Discipline
CREDENTIALS
30+ Years Public Accounting • Founder & Managing Partner, CPA Firm • M&A Advisory

BRIAN SANDERS

Chief Information Officer
PERSONNEL FILE
NAME
BRIAN SANDERS
Role
Chief Information Officer
Expertise
Networking & DevOps • Enterprise Infrastructure • Automation at Scale
CREDENTIALS
Engineering Leadership • Built Technology & Engineering Infrastructure at Multiple Defense Technology Companies

JOHN YESCAVAGE

Chief Strategy Officer
PERSONNEL FILE
NAME
JOHN YESCAVAGE
Role
Chief Strategy Officer
Expertise
Business Strategy & Revenue Growth • Client Insight & Engagement • Solution Design & Innovation
CREDENTIALS
20+ Years National Defense Leadership • Accelerated Growth of Multiple Defense Technology Companies • Led Enterprise-Wide Transformation
Board of Directors
04

Jim Miller

Chairman of the Board

Dayne Baird

Gordon Burns

Board Member

Jack Kerrigan

Wil Langenstein

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LATEST UPDATES

September 1, 2026

Quantum Leap Named to Washington Business Journal's 75 Fastest Growing Private Companies

Recognizing the region's most dynamic, high-growth private businesses.

Read more
September 1, 2026

QUANTUM LEAP RANKED #10 AMONG GREATER WASHINGTON'S LARGEST CYBERSECURITY COMPANIES

An annual ranking spotlighting the region's leading cybersecurity firms.

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News
August 31, 2026

Finalist for the 2026 Greater Washington Government Contractor Awards ®

The region's premier celebration of excellence in government contracting.

Read more