LUIGI BALLESTEROS
Paranaque City
Summary
Diligent Network Administrator with strong foundation in network security protocols and risk mitigation strategies. Demonstrated success in implementing robust security measures to protect sensitive data across complex infrastructures. Proven ability to analyze and resolve security breaches while continuously optimizing system performance.
Overview
10
10
years of professional experience
1
1
Certification
Work History
Network Security Engineer
NYGC Services, Inc.
06.2024 - Current
- Client: Accenture, Inc.
- Responsibilities:
- Interprets client issues and helps design resolutions based on deep product knowledge.
- Manages firewall rules and creates firewall policies related to client service requests.
- Provides firewall technical support to ensure network security, stability, and reliability.
- Manages firewall rules, creates firewall definitions and service requests for clients, coordinates firewall-related concerns with third-party support, and supports customers in firewall-related issues.
- Is involved in the lifecycle management of client firewalls.
Network Support Specialist
Kyndryl Inc.
06.2022 - 06.2024
- Responsibilities:
- Was accountable for providing L2 & L3 network support to one of the largest banks in the Philippines, ensuring the smooth and efficient operation of the bank’s computer network infrastructure.
- Provided technical support, maintenance, and troubleshooting for network systems, ensuring that employees could access the resources they needed and that the network operated securely and efficiently.
- Rendered technical support to ensure network reliability, security, and performance, and assisted in the implementation of network-related projects.
- Monitored network performance, identified, and resolved issues promptly, and performed routine maintenance tasks to ensure network stability and uptime. Updated network equipment and firmware as needed.
- Configured network components like subnets, routes, network gateways, Access Control Lists (ACLs), DNS, and Network Security Groups (NSGs). Conducted routine maintenance and updates to ensure network stability.
- Created, updated, and deleted peering with cloud virtual networks, monitored the performance of cloud virtual networks, and coordinated with cloud service providers for network issues.
- Managed firewall rules, created firewall definitions/policy service requests for clients, coordinated firewall-related concerns with third-party support, and supported customers with firewall-related issues.
- Implemented and maintained network security measures to protect against unauthorized access, data breaches, and malware. Conducted regular security audits and vulnerability assessments.
- Provided technical support during preventive maintenance activities (e.g., firmware upgrades) and systems integration.
- Collaborated with network engineers and IT management to plan and implement network upgrades and expansions.
- Evaluated and recommended new technologies to improve network performance and security.
- Key Projects:
- Led initiative of cisco switches and router firmware upgrade in Bank back-offices (Oct – Nov 2022) that improved back-offices’ security posture by 40%.
- Managed Fortinet firewall firmware upgrade on-site activities—one of critical initiatives in bank head offices (Mar - Jun 2023) that trimmed down network infrastructure vulnerabilities up to 60% in a span of 3 months.
- Directly involved in planning and implementing Palo Alto firewall firmware upgrade and Panorama integration in primary & secondary data centers (May - June 2023) that streamlined high availability across data centers and improved overall infrastructure security posture by 80%.
App/Cloud Support Analyst
Accenture Inc.
11.2015 - 06.2022
- Responsibilities:
- Supported and maintained the software applications and cloud-based services provided by the company to clients.
- Ensured the smooth operation of software applications and cloud-based systems, resolved issues promptly, and assisted in the implementation of cloud-based solutions.
- Troubleshooted software-related problems, including configuration, functionality, and performance issues.
- Collaborated with development teams to report and track software bugs and enhancements.
- Provided technical support to customers in infrastructure-related issues covering Network, Server, and Voice domains.
- Processed service requests related to workstations including workstation installations, moves, upgrades, back-up, monitoring, and other tasks based on agreed targets.
- Troubleshooted hardware and software-related issues, such as operating system errors, driver problems, and application glitches. Ensured that applications are up-to-date and compatible with the operating system.
- Performed break-fix analysis on workstation operating systems, applications, utilities, internet/intranet tools, and related workstation services. Collaborated with vendors to resolve application and hardware-related problems.
- Monitored voice systems to ensure maximum availability and optimal operation of office phone systems including phone handsets, MDF/IDF wiring, VoIP systems and voice circuits.
- Consistently maintained data integrity and ensured the security of workstations as per standards & best practices.
- Performed Network, Server, and Voice Resiliency (monthly and annually) for different Data Centers of the company.
- Implemented and enforced security measures on workstations to protect against malware, data breaches, and unauthorized access. Ensured compliance with organizational security policies and industry standards.
- Investigated CVEs and analyzed Qualys findings to strategize and implement remediation actions.
- Provided engineering support for maintenance and operation of firewalls, security information and event management (SIEM) systems, shared infrastructure firewalls and intrusion detection and prevention systems (IDPS).
- Key Projects:
- Participated in workstation operating system migration to Accenture-managed domain (Mar - Apr 2016) of one of Accenture diamond partners that helped boost transition progress by 40%.
- Directly involved in the production environment edge switches migration from Juniper to Cisco across Accenture core offices (Jan - Jul 2018) that reduced general network disconnection concerns and improved overall stability by 80%.
- Participated in an on-site network infrastructure build out of the new Accenture office (Oct 2018 - Feb 2019) which attracted clients’ confidence and brought 90% market increase.
- Spearheaded on-site network infrastructure build-out of one of diamond partners of Accenture (Aug 2021 - Mar 2022) that led to client income increase by 70%.
Education
BS - Computer Engineering
De La Salle University-Dasmariñas
Dasmariñas City, Cavite01.2015
Skills
- Management of IT operations
- Management of IT systems
- Project coordination
- Network systems administration
- Network system implementation
- System configuration
- Network configuration
- Network protection strategies
- Routing and switching knowledge
- Network security management
- Network traffic oversight
- Technical troubleshooting
- Supplier relationship management
- Customer-focused technical assistance
- Personnel coordination
- Network defense techniques
- Access control management
- Vulnerability assessment
- Endpoint protection
- Network security design
Accomplishments
● Participated in workstation operating system migration to Accenture-managed domain (Mar - Apr 2016) of one of Accenture diamond partners that helped boost transition progress by 40%.
● Directly involved in the production environment edge switches migration from Juniper to Cisco across Accenture core offices (Jan - Jul 2018) that reduced general network disconnection concerns and improved overall stability by 80%.
● Participated in an on-site network infrastructure build out of the new Accenture office (Oct 2018 - Feb 2019) which attracted clients’ confidence and brought 90% market increase.
● Spearheaded on-site network infrastructure build-out of one of diamond partners of Accenture (Aug 2021 - Mar 2022) that led to client income increase by 70%.
Certification
- CompTIA Cloud+ (Sep 2023)
- Aviatrix ACE (Jul 2022)
- Fortinet NSE 1, 2, 3 Network Security Associate (Jun 2022)
- CompTIA Server+ (Jan 2022)
- ITIL Foundation V4 in IT Service Management (Dec 2021)
- PCNSE (Feb 2021)
- CCNA (Feb 2021)
- CompTIA TFF+ (Dec 2020)
- CompTIA Security+ (Sep 2020)
- AZ-103 Microsoft Azure Administrator; Palo Alto Networks Certified Cyber Security Associate (Aug 2020)
- Juniper Networks Certified Associate (JNCIA-Junos) (Jul 2020)
- AZ-900 Microsoft Azure Fundamentals (May 2020)
- CompTIA Network+ (Sep 2018)
- CompTIA A+ (Dec 2017)
- ITIL Foundation V3 in IT Service Management (May 2017)
LNGG
English
Tagalog
Awards
Business Result Catalyst – Kyndryl (July 2023), Demonstrated Kyndryl Leadership Behaviors: Flat; Fast; Focused/Devoted, Focus: Customer, What we recognize them for: For helping build Kyndryl's reputation as the Partner of Choice
Timeline
Network Security Engineer
NYGC Services, Inc.
06.2024 - Current
Network Support Specialist
Kyndryl Inc.
06.2022 - 06.2024
App/Cloud Support Analyst
Accenture Inc.
11.2015 - 06.2022
BS - Computer Engineering
De La Salle University-Dasmariñas
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