Stefan S

SS

Open to opportunities

Stefan S

@stefans1

I protect networks, systems, and information assets through enterprise security strategy, risk management, and infrastructure upgrades.

Trinidad and Tobago

What I'm looking for

I'm open to full-time or contract assignments involving information security, infrastructure upgrades, risk management, regulatory compliance, and secure networked communications. I'm able to relocate and travel extensively.

I've protected networks, systems, and information assets across Citibank, Flow, Digi-Data, financial institutions, government, and private-sector organizations. My work includes security strategy for shared banking networks, customer-data encryption, and regulatory compliance.

I've led firewall/VPN, intrusion detection, token-based authentication, and remote-management upgrades, while guiding teams through risk assessment, testing, and secure network implementation across remote sites.

Experience

Work history, roles, and key accomplishments

CI

Current

CTI Coordinator

Current

Citibank

Jan 2015 - Present (11 years 8 months)

Coordinates CTI operations, overseeing security infrastructure and ensuring compliance with regulatory mandates.

Network Security Risk Management Regulatory Compliance System Monitoring Access Control

CI

Infrastructure Analyst

Citibank

Jan 2011 - Dec 2014 (3 years 11 months)

Analyzed and managed infrastructure systems, ensuring network security and system reliability.

Network Security System Monitoring Risk Management Regulatory Compliance

CI

Security Administrator

Citibank

Jan 2007 - Dec 2010 (3 years 11 months)

Administered security systems, protecting information assets and ensuring compliance with security policies.

Network Security Access Control System Monitoring Regulatory Compliance

FL

Network Administrator

Flow

Jan 2006 - Dec 2007 (1 year 11 months)

Managed network infrastructure, ensuring connectivity and security for organizational operations.

Network Security LAN WAN VPN Routing And Switching

DI

Network and Security Engineer

Digi-Data

Jan 2003 - Dec 2006 (3 years 11 months)

Engineered network and security solutions, implementing firewalls and VPNs for client environments.

Network Security Firewalls VPN TCP IP IP Chains

DI

System Engineer

Digi-Data

Jan 2001 - Dec 2003 (2 years 11 months)

Designed and implemented system solutions, ensuring reliability and performance for clients.

System Integration Server Technology Solaris RedHat Linux Windows Server

Education

Degrees, certifications, and relevant coursework

UH

University of Hertfordshire

BSc, Computer Science

BSc in Computer Science from the University of Hertfordshire, completed in 2009.

Tech stack

Software and tools used professionally

Windows Server

FreeBSD

Cisco ASA

Blue Coat

SQL

Availability

Open to opportunities

Location

Trinidad and Tobago

Authorized to work in

Trinidad and Tobago

Job categories

Infrastructure Analyst Security Administrator Network Administrator Network Engineer Systems Engineer

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