Dimitri Tzimas, Ph.D.

CTO

Brooklyn, New York, United States37 yrs 1 mo experience

Highly Stable

Key Highlights

Expert in Cyber Security and Enterprise Architecture.
Led global security architecture at PayPal.
Advisory role in Cyber Security Master's program.

Stackforce AI infers this person is a Cyber Security and Financial Services expert with extensive experience in architecture and compliance.

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Skills

Other Skills

Application ArchitectureBack OfficeBusiness AnalysisBusiness ContinuityCloud ApplicationsCloud ComputingCloud Computing IaaSComputer SecurityConsultingCyber DefenseCyber-securityCybercrime InvestigationCybersecurityDNSData Center

About

Equally adept at working with an innovative start-up, fortune 500 company, hedge fund or a boutique consultancy. Deep expertise in Financial Services technologies, Enterprise Architecture, Cyber Security, Cloud Enablement, DevOps and Engineering.

Experience

Qualtrics

Head of Security Architecture & GRC

Jun 2025 – Present · 9 mos · New York City Metropolitan Area

Leading the Security Architecture and Governance, Risk, Compliance (GRC) functions.

Paypal

Head of Security Architecture & Research

Jun 2022 – Jun 2025 · 3 yrs · New York, Scottsdale, San Jose, India

Held global responsibility for Security Architecture & Research at PayPal, the largest online payment processor serving over 400 million customers.

Katz school at yeshiva university

Adj. Professor

Jan 2020 – Dec 2023 · 3 yrs 11 mos

Adj Professor in the MS Cyber Security program

Ubs

Head of Security Architecture

Jan 2019 – Jul 2022 · 3 yrs 6 mos · New York, Zurich, London, India

Global responsibility for Cyber Security Architecture at the largest wealth manager. Led a team of Cyber Security Architects to deliver large scale solutions/provide business enablement through in novation. Recruited to lead the Security Architecture Strategy on various "transform the bank" initiatives, including a 350 mi move to Cloud, DevSecOps transformation and ZTA. Put in place an overarching Cyber Security architecture/strategy.

Yeshiva university

Advisory Board Member, Graduate Program in Cyber Security

Dec 2018 – Aug 2024 · 5 yrs 8 mos · Greater New York City Area

Assist on program strategy for the Cyber Security Master's degree program.

Xquisitec

Managing Principal

Jul 2007 – Dec 2018 · 11 yrs 5 mos · New York, London, Germany

Led a boutique consulting firm offering CTO/CISO advisory services to companies in Defense, Financial Services and Health Care in US/EMEA. Primary focus on Technology Strategy, Enterprise Architecture and Cyber Security.

Caxton associates

Partner, Chief Technology Officer, CISO

Jan 2000 – Oct 2006 · 6 yrs 9 mos · New York, London, San Francisco

Partner in this 20b+ venerable macro hedge fund. Responsible for setting the firm's global technology strategy, developing/evaluating proprietary trading systems (Stat Arb., HFT), and implementing cutting edge technologies in infrastructure, front/middle/Back-Office and Risk Management systems. Held CISO function.

St. john's university

2 roles

Chief Technology Officer, CISO

Promoted

Jan 1997 – Jan 2000 · 3 yrs

Led the planning and execution of the University's technology & cyber security strategy. Transitioned this 22K student metropolitan university from mainframe only computing to a state-of-the-art distributed computing environment. Implemented the largest NT academic deployment in the country, voted most "networked campus" and one of the first ones to support online learning at scale. Held CISO function.