# Sam Rehman

> Sam Rehman is the CEO of Hitachi Cyber (Hitachi Systems Trusted Cyber Management Inc.), appointed in December 2025. A 30+ year cybersecurity and software engineering veteran, he was previously CISO and SVP, Head of Cybersecurity Business at EPAM Systems, CTO of Arxan Technologies, head of Cognizant's Digital Engineering Business, and VP of Engineering at Oracle. He holds patents in software security, cloud, storage and distributed computing.

- **Role:** Chief Executive Officer at Hitachi Cyber (Hitachi Systems Trusted Cyber Management Inc.)
- **Organizations:** Hitachi Cyber, EPAM Systems, Cognizant, Arxan Technologies, Oracle Corporation
- **Known for:** Holds multiple patents in software security, cloud computing, storage systems and distributed computing., Led the engineering of Oracle's first in-memory database., Led the engineering of Oracle's Sensor/IoT-based platform.

## Career timeline

- **1990s-2010s** — Nearly 10 years at Oracle Corporation as VP of Engineering, leading the Server Technology Group and shipping Oracle's first in-memory database and its Sensor/IoT-based platform.
- **2010s** — Chief Technology Officer and Co-Head of Global Delivery at EPAM Systems (first tenure).
- **2010s** — Head of Digital Engineering Business at Cognizant.
- **2015** — Appointed Chief Technology Officer of Arxan Technologies (May 2015).
- **2019-2025** — Returns to EPAM Systems as SVP and Chief Information Security Officer; later expands to Head of Cybersecurity Business.
- **2025-12-10** — Appointed Chief Executive Officer of Hitachi Systems Trusted Cyber Management Inc. (Hitachi Cyber), Santa Clara.

## Achievements

- Holds multiple patents in software security, cloud computing, storage systems and distributed computing.
- Led the engineering of Oracle's first in-memory database.
- Led the engineering of Oracle's Sensor/IoT-based platform.
- Served as strategic advisor to multiple security and cloud companies.
- Regular contributor to security industry publications including Dark Reading, Security Magazine and Infosecurity Magazine.
- Appointed CEO of Hitachi Cyber in December 2025.

## Latest updates

- **2025-12** — Appointed Chief Executive Officer of Hitachi Systems Trusted Cyber Management Inc. (Hitachi Cyber), announced from Santa Clara.
- **2026-03** — Attended RSAC Conference at Moscone Center, San Francisco, representing Hitachi Cyber alongside CRO Matt Castonguay.
- **2026** — Launched first internal Ask Me Anything series with Hitachi Cyber employees.

## Links

- Website: https://hitachicyber.com
- LinkedIn: https://www.linkedin.com/in/samrehman

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Profile page: https://yespress.io/sam-rehman
Published by YesPress — https://yespress.io
Last updated: 2026-05-15