Jahir Ussain A
Builds & Secures
the Network Layer.
Entry-level network engineer with hands-on experience in routing & switching, VLAN configuration, TCP/IP, subnetting, and Windows Server administration — backed by field experience as a fiber optics technician and telecom field engineer. Comfortable across LAN/WAN troubleshooting, DHCP/DNS, packet analysis, and network scanning.
About
I'm a network engineer based in Tenkasi, India, with hands-on training across routing & switching, Windows Server administration, and network security — completed through structured professional certification at SYSTECH, Chennai (CCNA, CCNP, Hardware & Networking, Ethical Hacking).
Alongside core networking, I bring real field experience as a fiber optics technician and telecom field engineer, giving me practical exposure to the physical layer most network engineers only see in diagrams — cabling, splicing, signal troubleshooting, and last-mile connectivity.
I'm currently looking to move into a Desktop Support, Network Engineer, Network Administrator, or System Administrator role where I can apply both my structured networking knowledge and my field troubleshooting instincts.
Technical Skills
CCNA & CCNP Networking
/01Windows Server Administration
/02Network Security & Ethical Hacking
/03Hardware & Field / Fiber
/04Practical Networking Experience
Configured VLANs and implemented Inter-VLAN Routing in Cisco Packet Tracer.
Practiced IP address planning and subnetting across simulated topologies.
Configured DHCP & DNS services in Windows Server environments.
Installed and managed Active Directory basics, including domain controllers and organizational units.
Resolved 20+ simulated LAN/WAN connectivity issues by analyzing routing tables, IP conflicts, and VLAN misconfigurations.
Set up and managed static and dynamic routing protocols, including RIP and OSPF (basic level).
Featured Project
Network Vulnerability Scanning & Assessment
SecurityA self-driven assessment exercise covering host discovery, vulnerability scanning, traffic analysis, and reporting — end to end.
Performed network scanning using Nmap to identify open ports and active hosts.
Conducted vulnerability assessment to detect security weaknesses in the network.
Analyzed scan results and categorized risks based on severity levels.
Used Wireshark to monitor and analyze network traffic patterns.
Documented findings and prepared a full vulnerability assessment report.
Certifications
Professional Certification Training — Hardware & Networking, Windows Server Admin, CCNA, CCNP, Ethical Hacking
Cybersecurity Analyst Job Simulation
Workshop in Ethical Hacking & Cybersecurity
Certification in Python
Online Cybersecurity Workshop
OCI Certification
Education
Languages & Soft Skills
Let's Connect
Open to Network Engineer,
Sysadmin & Desktop Support roles.
Based in Tenkasi, India — willing to relocate. Reach out directly or connect on LinkedIn / GitHub.