Izmir, Türkiye

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Sezer Çomak portrait

Sezer ÇOMAK

Co-Founder @ Kalem Web & ISP Radius

Software developer · ISPs & Telecom

Custom software, product work and ISP platforms — RADIUS, billing and automation

  • Custom Software
  • RADIUS
  • Subscriber Management
  • Billing
  • Automation

Experience

Roles

Current

Earlier

Feb 2024 — Present · now

Co-Founder

Kalem Web Yazılım Ltd. Şti.

Kalem Web Yazılım builds industry-focused software for the telecommunications and customs sectors, along with tailor-made solutions and web projects for its clients.

As Co-Founder, I lead company strategy, the product portfolio and business development, including ISP Radius.

I started this work as a freelancer in 2011 and incorporated Kalem Web Yazılım Ltd. Şti. in 2024.

Feb 2024 — Present · now

Co-Founder & Product Lead

ISP Radius

ISP Radius is an all-in-one platform that helps ISPs digitize and automate their operations.

  • — RADIUS authentication & subscriber management
  • — ISP CRM, billing and workflow automation
  • — MikroTik and network integrations
  • — SaaS product strategy, roadmap and customer onboarding

Aug 2024 — Present · now

Unit Manager

Merkür Net

Merkür Net is a brand of Sanal Santral Telekomünikasyon Tic. A.Ş. I have been entrusted with the full management of Merkür Net, and I also develop its CRM software.

Oct 2021 — May 2023

Software Development Specialist

During this period I served as a Software Development Specialist, developing Merkür Net's software.

Sep 2019 — Sep 2021

Software Development Specialist

TuruncuNet

Software for a telecommunications ISP: consumer and business packages, subscriber operations and production support.

Dec 2012 — Sep 2019

VoIP Systems Specialist

Sanal Santral Telekomünikasyon A.Ş.

Nearly seven years on Asterisk-based PBX, IVR and VoIP. Fast answers, working systems, customer-facing delivery.