FreeSwitch Developers For Hire
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Hire patrickmartins13
patrickmartins13 patrickmartins13
$18 USD / hour
DevOps Engineer | VoIP Expert | Senior SysAdminBrazilSenior Systems Administrator, Platform Engineer, and Telephony Specialist with 10+ years of hands-on expertise engineering high-availability cloud, hybrid, and bare-metal environments. Proven track record of architecting scalable distributed systems, driving infrastructure-as-code automation, and building...Senior Systems Administrator, Platform Engineer, and Telephony Specialist with 10+ years of hands-on expertise engineering high-availability cloud, hybrid, and bare-metal environments. Proven track record of architecting scalable distributed systems, driving infrastructure-as-code automation, and building enterprise-grade VoIP and call center infrastructures. Uniquely equipped to bridge modern cloud-native DevOps with complex real-time telecom architectures. Deep experience configuring high-concurrency SIP proxies, automated PABX environments, custom billing modules, and bespoke call center solutions for global clients. Core Technical Stack - Cloud & Infrastructure: Oracle Cloud (OCI), Google Cloud Platform (GCP), Bare Metal, Hybrid Systems - Containers & Orchestration: Kubernetes, Docker - Telephony & VoIP: Kamailio, OpenSIPS, FreeSWITCH, Asterisk, SIP Trunking, High-Availability Routing - PABX & Call Center Platforms: GoAutodial, MagnusBilling, Issabel, Elastix - Automation & Development: Python, Shell Scripting (Bash), PHP / Laravel, SQL (MySQL, PostgreSQL) Ready to optimize your infrastructure, scale your telecom platform, or resolve critical performance bottlenecks. Send me a message with your project details to get started. less -
Hire Lgchris
You're not looking for a coder. You're looking for the person other coders call when it absolutely has to work. That's me. I'm a software engineer, architect, and founder in Santa Monica, California — the heart of Silicon Beach — with 30+ years of shipping real products: AI voice agents that answer live customer...You're not looking for a coder. You're looking for the person other coders call when it absolutely has to work. That's me. I'm a software engineer, architect, and founder in Santa Monica, California — the heart of Silicon Beach — with 30+ years of shipping real products: AI voice agents that answer live customer calls and book jobs 24/7, e-commerce platforms processing real revenue, apps in the App Store and Google Play, and telephony infrastructure entire call centers run on. I build and operate my own AI SaaS platform CallerWho.com, so I think like an owner: revenue, reliability, results. And you work directly with me — US time zone, no middlemen, no outsourcing. The person you message is the person who builds it. WHAT I DO AT A WORLD-CLASS LEVEL: • AI & AI Agents — Custom AI on OpenAI/Claude: phone agents that don't just talk — they DO what was discussed on the call. Caller books an appointment? It's on the calendar. Asks for a quote? It's in their inbox before they hang up. Chatbots, lead qualification, RAG — AI that acts, not just answers. • AI Office Automation — Every call becomes completed work: appointments scheduled, CRM updated, estimates sent, invoices created, follow-ups fired — automatically. Plus Microsoft 365, Google Workspace, Power Automate, Zapier/Make/n8n, and document workflows. Your back office on autopilot. • Full-Stack Engineering — Node.js, React, PHP, Python, MySQL/Postgres, REST APIs, Stripe/PayPal, AWS, Azure, Cloudflare. Built for scale, built once, built right. • Telephony & VoIP — Asterisk, FreeSWITCH, SIP, Twilio. Carrier-grade phone systems and IVRs. Few engineers on this site can touch this stack. I own it. • Mobile & Desktop — Native iOS (Swift/Xcode), Android, Windows, and macOS. • Plus: web scraping & data mining, test automation, software architecture, technical writing, and project management for teams that need an adult in the room. I've delivered for automotive, medical devices, e-commerce, and telecom — industries where "almost working" isn't an option. BUILT TO BE YOURS: I spot the proprietary processes and inventions hiding inside your product, then design and document them as defensible, patent-ready IP for your attorney to file. Your edge stays YOUR edge. NO BLACK BOXES, NO HOSTAGES: Every project ships with professional documentation — architecture overviews, setup guides, API docs, clean handoff notes — so the next engineer is productive on day one, not day thirty. Some developers keep things murky so you stay dependent. I document everything. If you want it built fast, built right, and built once — message me. Let's build something your competitors can't copy — technically or legally. less -
Hire ahsan8601
Hi, I'm Ahsan, a VoIP and Unified Communications expert based in Pakistan. I lead a team of 4 specialists, and for the past 7 years we've been providing backend support to multiple VOIP provider businesses—handling everything from setup and security to ongoing maintenance. I specialize in Avaya solutions, working...Hi, I'm Ahsan, a VoIP and Unified Communications expert based in Pakistan. I lead a team of 4 specialists, and for the past 7 years we've been providing backend support to multiple VOIP provider businesses—handling everything from setup and security to ongoing maintenance. I specialize in Avaya solutions, working directly with Avaya business partners globally offering comprehensive support for: ✅ Avaya Communication Manager (CM) ✅ System Manager (SM) ✅ Session Border Controller for Enterprise (SBCE) ✅ Orchestration Designer (Avaya OD) ✅ SIP trunking ( Telnyx, Twilio, Voxtelesys and Voip.ms) ✅ System integration and remote troubleshooting Beyond Avaya, I also have deep expertise in open-source VoIP technologies, including: ✅ Asterisk / FreePBX, 3CX & Vital PBX installation and customization ✅ SIP debugging, call routing, and diagnostics ✅ AI Voice Assistant for your Business Telephony ✅ AI Chat Assistant for your Business Telephony My skillset includes robust networking knowledge: ✅ VPNs (IPSec, WireGuard, OpenVPN and site-to-site tunnels) ✅ Firewall Configurations ( Fortinet, pfSense, OPNsense & OpenWRT) Whether you're building a new VoIP system, need ongoing support, or are facing complex SIP/NAT or SBC issues, I can help you build and maintain a secure, scalable, and stable communication platform. Let me be your remote VoIP partner — reliable, efficient, and available when you need it most. less -
Hire Triviio
We build and maintain real-world web, automation and VoIP systems for businesses worldwide. Our core expertise includes: ✔ Full-stack web development using React, Next.js, Node.js, PHP and Laravel ✔ WordPress, Shopify and custom eCommerce development ✔ Python automation, web scraping and API integrations ✔ VoIP...We build and maintain real-world web, automation and VoIP systems for businesses worldwide. Our core expertise includes: ✔ Full-stack web development using React, Next.js, Node.js, PHP and Laravel ✔ WordPress, Shopify and custom eCommerce development ✔ Python automation, web scraping and API integrations ✔ VoIP systems using Asterisk, FreeSWITCH, SIP and WebRTC ✔ Linux server setup, troubleshooting and deployment ✔ CRM, dashboards and custom business applications ✔ AI and API integrations for existing applications We have 7+ years of hands-on IT and development experience and have worked with clients and businesses across the US, Australia and India. Whether you need a quick bug fix, existing system modification, server troubleshooting or a complete application, we can take ownership of the work and communicate clearly throughout the project. Available to start immediately. TRIVIIO Beyond Possible less
