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Skills

  • A2Billing
  • Asterisk
  • Billing
  • cnm
  • Consultant
  • Engineering
  • Freepbx
  • HTTP
  • International
  • LAMP Stack
  • LinkedIn
  • Management
  • Mobile
  • Project Management
  • trixbox

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Services

  • Programming

    $5/hr Starting at $25 Ongoing

    Dedicated Resource

    VoIP ConsultantAsteriskCall Center SetupPin & Pin less calling card system.Customized IVR & customized billing for every kind of VoIP platform.Messenger Setup.LAMP Setup.

    A2BillingAsteriskBillingcnmConsultant
  • Database Design

    $5/hr Starting at $25 Ongoing

    Dedicated Resource

    VoIP ConsultantAsteriskCall Center SetupPin & Pin less calling card system.Customized IVR & customized billing for every kind of VoIP platform.Messenger Setup.LAMP Setup.

    A2BillingAsteriskBillingcnmConsultant
  • Smart Phone Applications

    $5/hr Starting at $25 Ongoing

    Dedicated Resource

    VoIP ConsultantAsteriskCall Center SetupPin & Pin less calling card system.Customized IVR & customized billing for every kind of VoIP platform.Messenger Setup.LAMP Setup.

    A2BillingAsteriskBillingcnmConsultant
  • Mobile Applications

    $5/hr Starting at $25 Ongoing

    Dedicated Resource

    VoIP ConsultantAsteriskCall Center SetupPin & Pin less calling card system.Customized IVR & customized billing for every kind of VoIP platform.Messenger Setup.LAMP Setup.

    A2BillingAsteriskBillingcnmConsultant
  • Telephony Applications

    $5/hr Starting at $25 Ongoing

    Dedicated Resource

    VoIP ConsultantAsteriskCall Center SetupPin & Pin less calling card system.Customized IVR & customized billing for every kind of VoIP platform.Messenger Setup.LAMP Setup.

    A2BillingAsteriskBillingcnmConsultant

About

Asterisk, FreeSwitch, OpenSIPS, WebRTC Specialist | VoIP Systems That Scale | Backend & Infra Pro

With over 20 years of experience in VoIP, backend systems, and real-time communications, I specialize in designing, developing, and managing scalable and secure solutions using Asterisk, FreeSWITCH, OpenSIPS, WebRTC, and custom backend architectures.

I’ve worked with startups and enterprise teams across the globe—leading cross-functional developers (iOS, Android, web, backend), acting as a Technical Product Owner, and launching innovative platforms in telecom, healthcare, and unified communications.

I deliver complete solutions, from SIP infrastructure and call routing to cloud APIs and user-facing features. I'm highly proficient in Linux systems, database design (MySQL, Redis), scripting (Bash, Perl), and modern DevOps workflows (Docker, Git, CI/CD).

If you're looking for a hands-on VoIP engineer, a backend systems architect, or a technical consultant who can lead and deliver complex systems, let’s work together. I take pride in clear communication, performance optimization, and results that scale.

Work Terms

Payment Terms:

Hourly or fixed-price projects are welcome.
For fixed-price projects, milestones will be mutually defined and approved in advance.
Secure payments via Guru’s SafePay system are preferred.

Confidentiality:
I strictly respect NDA requirements and client confidentiality. You can rely on professional, secure, and responsible handling of your code and data.

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