Dennis: Email & Phone Number

Information Security Administrator - C11 - Manager (Mainframe, Midrange, UNIX) at Citi|Taguig, National Capital Region, Philippines

Position:

Information Security Administrator - C11 - Manager (Mainframe, Midrange, UNIX) at Citi

Location:

Taguig, National Capital Region, Philippines

View Dennis's Email

Up to 10 free lookups. No credit card required.

Last updated: 2026-06-25

Updated: 2026-06-25

Found email addresses for Dennis:

Business emails:

**@citigroup.com

Personal emails:

d**************r@gmail.com

Found phone for Dennis:

+63-***-***-6565

A different Dennis?

Work Experience 8 years

Information Security Administrator - C11 - Manager (Mainframe, Midrange, UNIX) at Citi

Jan 2025 - Current

Information Security Administrator Analyst 2- C10 - Assistant Manager (Mainframe, Midrange, UNIX) at Citi

Nov 2022 - Dec 2024

Information Security Administrator Analyst 1- C09- Officer (GCG/GF/TPAM/Encryption) at Citi

Mar 2021 - Nov 2022

Software Engineer at Xorcas Corporation

Jan 2019 - Jul 2019

Software Engineer at Xorcas Corporation

Sep 2018 - Dec 2018

Dennis started working in 2018, then the employee has changed 1 company and 3 jobs. On average, Dennis works for one company for 1 year 2 months.

Their professional focus is Access Control, Administration, and Artificial Intelligence (AI) across 3 core areas.

Dennis holds AI Skills Fest 2026, Certificate of completion - Intro to AI, and Ethics in the Age of Generative AI certifications.

Education

Bachelor of Science in Information System at De La Salle-College of Saint Benilde

Frequently Asked Questions

What is Dennis's email address?

SignalHire found verified email addresses for Dennis, both business and personal. Their business email is **@citigroup.com, and personal emails include d**************r@gmail.com.

What is Dennis's phone number?

SignalHire found a verified phone number for Dennis: +63-***-***-6565.

How do I contact Dennis at Citi?

You can reach Dennis through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Dennis's professional background?

Dennis has 8 years of professional experience. They have held roles including Information Security Administrator Analyst 2- C10 - Assistant Manager (Mainframe, Midrange, UNIX), Information Security Administrator Analyst 1- C09- Officer (GCG/GF/TPAM/Encryption), and Software Engineer at companies such as Citi, Citi, and Xorcas Corporation. Their education includes Bachelor of Science in Information System from De La Salle-College of Saint Benilde.

Is Dennis's contact information up to date?

Yes. Dennis's SignalHire profile was last updated on 25 June 2026, reflecting their current position as Information Security Administrator - C11 - Manager (Mainframe, Midrange, UNIX) at Citi in New York, New York, United States.

Dennis Namesakes

Name

Company

Position

Dennis

AppDynamics

Sales Engineering Manager

Get contacts

Dennis Teo

SATA COMMHEALTH

Volunteer Manager II | Team Lead (Volunteer Management & Community Outreach)

Get contacts

Yoogeun

Republic of Korea Navy

Director of Strategic Planning

Get contacts

See more profiles

Other employees at Citi

Name

Company

Position

Aizaz Nabil

Citi

Business Planning Analyst

Get contacts

Atulya Kshetty

Citi

Business Analyst

Get contacts

Andrew Friedland

Citi

Incoming 2027 Investment Banking Summer Analyst

Get contacts

Ernest John Magistrado

Citi

Infrastructure Analyst

Get contacts

DeNicko Victor

Citi

Manager

Get contacts

Tanvi Nar

Citi

Analyst

Get contacts

Erick Castillon

Citi

Customer Service Specialist

Get contacts

Gokulnath Gnanaprakasam

Citi

Senior AML KYC Analyst

Get contacts

Shoina Komilova

Citi

Software Engineer in Test

Get contacts

Eskandar Hassan

Citi

Cash and trade processing Representatives

Get contacts

See more profiles

Data Privacy

GDPR COMPLIANT

SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.

CCPA COMPLIANT

SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.