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Billy Az-zahryBA
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Billy Az-zahry

@billyaz-zahry

System, Network & Security Administrator at PT BELAWAN NEW CONTAINER TERMINAL securing IT/OT networks and production systems.

Indonesia
Message

At PT BELAWAN NEW CONTAINER TERMINAL, I maintain the systems and security that support the terminal’s production operations. I configured IEC 62443 network segmentation between enterprise IT and industrial OT systems, and migrated Cisco ASA devices to high-availability FortiGate firewalls.

I work with the Head Office SOC through FortiSOAR to investigate and resolve daily security alerts. I also forward on-premise syslogs to Microsoft Sentinel and support endpoint isolation, firewall blocks, and root-cause fixes.

To strengthen endpoint and data protection, I onboarded and standardized 100–140 corporate devices on Microsoft Intune, Microsoft Defender, and ManageEngine. I also manage backup pipelines across production instances and Oracle Database appliances, with immutable offsite replication to Wasabi Cloud Storage.

Previously, I administered network and server infrastructure at PT PRIMA TERMINAL PETIKEMAS and supported government IT infrastructure for DISKOMINFO SUMUT & DPMPTSP. My work has included VMware and Proxmox virtualization, industrial and enterprise networking, and resolving cybersecurity audit findings toward ISO 27001 readiness.

Experience

Work history, roles, and key accomplishments

PT
Current

System, Network & Security Administrator

PT Belawan New Container Terminal

Jan 2024 - Present (2 years 10 months)

Managed hybrid Active Directory and Microsoft 365, implemented IT/OT network segmentation per IEC 62443, migrated firewalls to FortiGate, and handled daily SOC incident response. Oversaw endpoint management, backup pipelines, and security audit remediation.

PI

System & Network Engineer

Provincial & Municipal Government IT Infrastructure

Jan 2016 - May 2019 (3 years 4 months)

Deployed and maintained Proxmox VE virtualization and CentOS Linux servers for government applications. Configured MikroTik routing, firewall policies, and bandwidth management for high-traffic public service networks.

Education

Degrees, certifications, and relevant coursework

Universitas Sumatera Utara logoUU

Universitas Sumatera Utara

Bachelor of Information Technology, Information Technology

2008 - 2017

Bachelor of Information Technology (S.Kom) from Universitas Sumatera Utara, completed in 2017.

EC-Council logoEC

EC-Council

Certified Network Defender (CND), Network Security

Certified Network Defender (CND) certification issued by EC-Council in May 2025.

EC-Council logoEC

EC-Council

Certified Ethical Hacker (CEH), Ethical Hacking

Certified Ethical Hacker (CEH) certification issued by EC-Council in November 2023.

OPSWAT Academy logoOA

OPSWAT Academy

Introduction to Critical Infrastructure Protection (ICIP), Critical Infrastructure Protection

Introduction to Critical Infrastructure Protection (ICIP) certification issued by OPSWAT Academy in July 2023.

Cisco logoCI

Cisco

Cisco Certified Network Associate (CCNA), Networking

Cisco Certified Network Associate (CCNA) certification issued by Cisco in November 2022.

EXIN logoEX

EXIN

EXIN EPI Data Centre Foundation (DCFC), Data Centre

EXIN EPI Data Centre Foundation (DCFC) certification issued by EXIN in November 2022.

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