Security Network Engineer
Network Engineer
Available for hire
Years of
experience
8+ years
Experience
level
Mid-level
Available
for
Full-time, Part-time, Contract, Freelance, Internship
Available from
23 Jun 2026
I am a CCNA/JNCIA-certified Network Security professional with over 8 years of experience in enterprise network operations and security infrastructure. Currently, I support a large-scale APAC firewall environment for EssilorLuxottica, managing more than 200 Palo Alto firewalls across 15 countries using Panorama. My responsibilities include firewall migration support, high-availability environments, policy optimization, and serving as the L4 escalation point for complex network and security issues within the project scope.
As my current contract is approaching completion, I am actively seeking a new opportunity where I can contribute my experience in network security, enterprise infrastructure, and operational support. I am particularly interested in roles involving large-scale network environments, security operations, datacenter infrastructure, or project-based initiatives. I am open to full-time, freelance, or contract-based engagements and available to transition with sponsorship support if required.
Skills
Visual Basic
SQL
AWS
Azure
GitLab
VMware
GCP
Software as a Service
JIRA
Selenium
LAMP stack
MySQL
SQLite
Cloudflare
Git
GitHub
ChatGPT
Web security
Internet of Things
Platform as a Service
Infrastructure as a Service
Python
Bash
Shell
C
PowerShell
VBA
Delphi
MS SQL Server
MariaDB
GCC
Managed Hosting
WordPress
Grafana
Qt
Chocolatey
APT
C++
C#
Languages
Employment History
Remote Senior Network Engineer (Security) at
EssilorLuxottica
2025
-
2026
Managed 200+ Palo Alto Networks firewalls across 15 APAC countries via Panorama, reducing configuration drift by 40% through centralized management. | Led Panorama migration of 30+ firewalls (2025–2026), reducing rule base complexity by 90% while maintaining 99% uptime with zero business disruption. | Standardized non-compliant network topologies with 10+ regional IT teams, aligning configurations with corporate security standards. | Developed physical and logical network diagrams to streamline migration planning and reduce preparation time by 30%. | Consolidated legacy and local Panorama instances into a unified platform, cutting policy deployment time by 60%. | Served as L4 escalation point for HA environments, resolving migration-related incidents and ensuring continuous service availability. | Authored and presented CRFs to CAB, achieving a 100% approval rate. | Reviewed and maintained firewall rules, NAT policies, and access controls to ensure security compliance.
Remote Tier 2 Network Engineer at
Wowrack Technologies, Inc.
2021
-
2025
Resolved 40+ network tickets monthly as remote lead, achieving 95% CSAT and cutting downtime by 20% via rapid RCA, runbooks, and coordinated fixes. | Led firewall hardening and security audit (2025) across 100+ firewalls and 350+ switches, patching vulnerabilities to reduce breach risks by 30%. | Completed ToR switch migration across 19 racks (2024-2025) and border switch migration (2023-2024) with 99.9% uptime, using pre-testing, rollback strategies, and post-migration validation. | Migrated 30+ devices across platforms (Cisco ASA → Palo Alto, Dell → Juniper) with zero business disruptions, using pre-testing, rollback, and validation processes. | Designed automated network backups for 200+ devices, reducing recovery time by 50% during hardware failures. | Conducted network infrastructure audit (2022-2023), provisioning new devices to ensure seamless integration and enhanced security. | Deployed and managed IPv6 cloud infrastructure (2021-2022), ensuring secure, scalable addressing across internal and client environments. | Mitigated 200+ DDoS attacks via Arbor Sightline (RTBH) , delivering forensic reports that improved incident prevention by 30%. | Provided ongoing operational support, monitoring, and incident response for network security infrastructure. | Mentored 2 junior network engineers in firewall hardening, change management, and network backup operations.
Tier 1 System & Network Administrator (Hybrid) at
Wowrack Technologies, Inc.
2018
-
2020
Resolved 200+ monthly tickets via ConnectWise Manage for with 90%+ first-contact resolution for L1 issues. | Reduced MTTR by 25% by coordinating with datacenter teams and optimizing escalation procedures. | Authored 20+ knowledge-base articles monthly, cutting new hire onboarding time by 40% and reducing repeat tickets by 30%. | Collaborated with T2 Engineers/T3 Architects, datacenter technicians, and developers, to maintain 95% SLA compliance for critical incident escalations. | Provide ongoing operational support, monitoring, and incident response for network security infrastructure.
Lead Programmer (Freelance) at
PT Holcim Indonesia Tbk (LLC)
2017
-
2018
Led the design and implementation of a Gateway and Time Attendance System Project at Holcim Tuban Plant, utilizing a Linux application on a PC Engines ALIX 3D3 System Board with Microsoft SQL Server 2008 hosted in a separate environment. This project involved comprehensive requirements analysis and collaboration with multidisciplinary teams to ensure seamless integration.
Senior Industrial Automation & Control Engineer at
PT Wahyu Daya Mandiri
2014
-
2016
Industrial Automation & Power Systems Engineer with hands-on experience in process control engineering, industrial automation, and power system integration. Core expertise spans PLC/SCADA programming, process control optimization, and industrial power control, with demonstrated success in designing and commissioning automated systems for heavy industries including oil & gas, mining, sugar mills, chemical processing, and many more. Specialized in bridging process engineering with power system stability, implementing solutions for load balancing, and energy-efficient automation. Proven ability to optimize industrial processes while ensuring reliable power distribution, combining technical mastery of control systems with practical understanding of electrical networks to deliver comprehensive engineering solutions.
Industrial Automation & Control Engineer at
PT Mitra Hutama Engineering
2010
-
2014
Industrial Automation & Power Systems Engineer with hands-on experience in process control engineering, industrial automation, and power system integration. Core expertise spans PLC/SCADA programming, process control optimization, and industrial power control, with demonstrated success in designing and commissioning automated systems for heavy industries including oil & gas, mining, sugar mills, chemical processing, and many more. Specialized in bridging process engineering with power system stability, implementing solutions for load balancing, and energy-efficient automation. Proven ability to optimize industrial processes while ensuring reliable power distribution, combining technical mastery of control systems with practical understanding of electrical networks to deliver comprehensive engineering solutions.
Network Administrator (Part time, Volunteer) at
Various Company
2010
-
2016
Dual-skilled professional with a strong foundation in industrial power & control systems (PLC/SCADA) and a deep passion for IT infrastructure, networking, and Linux systems. Started career in industrial automation engineering while actively pursuing networking and server administration through academic labs and part-time roles.
Transitioned from industrial automation & control engineering to IT Networking, driven by a long-standing interest in networking technology, server administration, and cybersecurity.
Education
Bachelor's in Computer Systems Engineering at
Sepuluh Nopember Institute of Technology
2003
-
2009