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Tonirul Islam
Network Engineer · Builder · Writer

Designing enterprise networks by day, building for the web by night —
and writing about all of it at tonirulislam.tech.

3+
Years Exp.
3×
Cisco Certs
2+
Ventures
Ventures & Projects
Founder

A modern publishing platform for long-form essays, technical deep-dives, and ideas worth spreading. Built with a focus on clean reading experiences and writer-first tools.

Founder

A fast, browser-based PDF toolkit — edit, convert, compress, merge, and split documents with zero installs. Supports Word ↔ PDF, PDF ↔ PowerPoint, PDF ↔ Excel, and more. Built for professionals who need reliable document conversion without the bloat.

PDF Editor Word ↔ PDF PDF ↔ PPTX Merge & Split Compress

Network Engineer.
Curious Builder.

I'm a highly motivated Network Engineer with deep expertise in enterprise network design, advanced routing and switching protocols, and network automation. Currently at Radient Medical System (Apr 2023 – Present), I oversee the full network infrastructure — ensuring it stays performant, secure, and resilient at scale.

Beyond the rack and router, I'm a builder who loves exploring web technologies, shipping products, and sharing what I learn. This blog is my public notebook — where networking meets software, and complex ideas become accessible stories.

I hold CCNA, CCNP Enterprise, and CCIE Enterprise certifications from Network Bulls, with hands-on experience spanning IP services, WAN technologies, Python-based automation, and Palo Alto firewalls. I also founded themedium.blog (a publishing platform for long-form writing) and doccraftr.com — a fast PDF toolkit for editing, converting, and transforming documents between Word, PDF, PowerPoint, Excel, and more.

What I Work With

🔀 OSPF / EIGRP / BGP
🌐 MP-BGP / SD-Access
🔁 VTP / MST / Rapid PVST+
HSRP / VRRP / GLBP
🛡️ 802.1X / AAA / Cisco ISE
🔥 Palo Alto Firewalls
🌍 DMVPN / MPLS / SD-WAN
🐍 Python / Network Automation
📡 QoS / DHCP / DNS / NAT
🧠 Cisco DNA Center / SDN
🔍 Wireshark / Packet Analysis
💻 React / PHP / HTML / CSS

Work History

Apr 2023 – Present
Network Engineer
Radient Medical System
2026 – Present
Founder & Editor
themedium.blog
2026 – Present
Founder & Lead Systems Engineer
doccraftr.com — PDF Editor & Converter Platform

Academic Background

2013 – 2017
Graduation
Techno India University, West Bengal
2012
10+2 — Higher Secondary
W.B.C.H.S.E Board
2010
10th — Secondary
W.B.B.S.E Board

Credentials & Training

CCIE
CCIE Enterprise
Cisco · Network Bulls
CCNP
CCNP Enterprise
Cisco · Network Bulls
CCNA
CCNA [200-301]
Cisco · Network Bulls
IBM
Software Foundation (Advanced) with C++
IBM Continuing Education
INT
Java · Python · React · Web Dev
Internshala — HTML, CSS, Bootstrap, PHP