Hire the Best VOIP Software Engineers
in India

👋 Hi, I'm Hepshiba Beula, a Networking Engineer with 4+ years of experience specializing in Optical Networks (ONTs & OLTs), VoIP, PBX, Asterisk, Wi-Fi module development, and Network Administration. I have hands-on expertise in embedded systems, networking protocols, and firmware development for high-performance telecommunications solutions. Key Expertise: ✅ ONTs Development & Support – Data flow monitoring, VoIP support, OMCI stack enhancements ✅ Wi-Fi Module Engineering – Performance optimization, debugging, and system enhancements ✅ VoIP Network Enhancements – SIP signaling, VoIP debugging (Asterisk, Wireshark), FXS device integration, FreePBX deployment ✅ Network Administration – VLANs, switch-based configurations, traffic monitoring (Ixia, Spirent) ✅ Embedded Software Development – C programming, Data Structures, Linux-based development ✅ Packet Analysis & Debugging – Deep packet inspection, protocol debugging (Wireshark, Asterisk) ✅ OLT Support – Ensuring seamless integration and maintenance of Optical Line Terminals Professional Experience Highlights: 🔹 Optical Networks (ONT Development & OLT Support) Developed OMCI stack interfaces for ONTs, enabling seamless network provisioning. Worked on PON activation, MIB Upload, and software upgrades for Adtran ONTs. Designed and implemented CFM Protocol on Cortina-based targets. Monitored data flow and ensured VoIP support for ONTs in live network environments. 🔹 Wi-Fi Module Enhancement & Debugging Enhanced and maintained the BGW320 Wi-Fi module for AT&T residential gateways. Debugged and optimized Wi-Fi performance, including network stability and traffic flow. 🔹 VoIP & Network Optimization Implemented VoIP handling in FXS devices (Cortina 6xx, BRCM 8xx, 62x). Debugged VoIP packets using Asterisk, Wireshark, ensuring high call quality. Managed SIP signaling and VoIP enhancements for network efficiency. Has experience in deploying FreePBx on cloud server and configuration of trunk and SIP routing and extension 🔹 Network Configuration & Traffic Analysis Monitored and optimized network traffic using Ixia, Spirent for data packet analysis. Configured VLANs, switches, and network routing for optimal data flow. Tech Stack & Tools: 💻 Languages: C, Python, Shell Scripting 🛠 Tools: Git, JIRA, Bitbucket, Confluence, Perforce, Wireshark, Asterisk, IXIA, Spirent 📡 Platforms: Linux/Unix, Residential Gateways, Optical Line Terminals (OLTs), Optical Network Terminals (ONTs) I am open to networking, IT infrastructure, and embedded systems roles, bringing strong problem-solving skills and expertise in network administration, VoIP, and optical networking solutions. Let’s connect and collaborate! 🚀

✅ Top Rated Plus AI Agent Development ✅ 100% Job Success Score ✅ Fluent English Verified AI Voice Agents | Twilio Expert | SMS, Calling & CRM Automation I help businesses automate customer communication using AI Voice Agents, SMS Automation, Calling Systems, CRM Integrations, and Communication Workflows. With 130+ completed projects, Top Rated Plus status, and a 100% Job Success Score, I specialize in building production-ready systems that answer calls, qualify leads, book appointments, automate follow-ups, improve customer response times, and reduce manual work. My expertise combines modern AI technologies with real-world communication infrastructure, helping businesses move from manual processes to scalable automation. 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 📞 Voice AI & Communication Automation AI Voice Agents, AI Receptionists, AI Calling Systems, Appointment Booking Agents, Lead Qualification Systems, Customer Support Automation, Contact Centers, IVR Systems, SIP, SMS Automation, Call Routing 🤖 AI Solutions & Conversational Systems OpenAI, Claude, Gemini, Vapi, Retell AI, Conversational AI, Knowledge Assistants, Internal AI Tools, Business Automation ⚙️ CRM & Workflow Automation Lead Management, Pipeline Automation, Customer Communication Workflows, CRM Integrations, Automated Follow-Up Systems 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 📞 AI Voice Agents & Calling Systems • AI Receptionists • AI SDRs • Appointment Booking Agents • Customer Support Agents • Outbound Calling Systems • Inbound Voice Automation • Voice AI Integrations 📡 Twilio & Communication Solutions • Twilio Development • SMS Platforms • IVR Systems • Call Center Solutions • Twilio Flex • Voice & Messaging Automation • Toll-Free & A2P 10DLC Solutions ⚙️ CRM & Business Automation • HubSpot Integrations • GoHighLevel Automation • Salesforce Integrations • Custom CRM Development • Lead Qualification Workflows • Business Process Automation 🧠 OpenAI, Claude & AI Integrations • ChatGPT Solutions • Claude Integrations • AI Assistants • Knowledge Systems • Internal AI Tools • RAG Applications 📱 SaaS, Web & Mobile Applications • Customer Portals • Admin Dashboards • AI-Powered Platforms • Web Applications • Mobile Applications 🖥️ Backend Development Python, Node.js, FastAPI, Express.js, REST APIs, Webhooks, Microservices 💻 Frontend Development React, Next.js, Vue.js, Angular 📱 Mobile Development React Native, Flutter, Swift, Kotlin ☁️ Cloud & Infrastructure AWS, Azure, GCP, Docker, CI/CD, Serverless Architectures 📊 Databases & AI Infrastructure PostgreSQL, MongoDB, Firebase, Supabase, Vector Databases 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 • Real Estate & Property Management • Healthcare & Wellness • LegalTech • Financial Services • Logistics & Transportation • Professional Services • Call Centers • Home Services • SaaS & Technology Companies If you're looking to automate calls, SMS, customer communication, lead qualification, appointment booking, or customer support using AI and Twilio-based communication systems, let's discuss your project. Keywords: AI Voice Agent, AI Receptionist, AI Calling Agent, Twilio Developer, SMS Automation, IVR Development, CRM Automation, Voice AI, OpenAI, Claude, Vapi, Retell AI, Contact Center Solutions, Call Center Automation, Lead Qualification, Appointment Booking, Customer Communication Automation, Workflow Automation, Conversational AI, SaaS Development, Python, Node.js, React

🔧 Asterisk Developer | 🧠 Conversational AI Telephony Specialist | 🟢 Business WhatsApp + VoIP Integrator I’m a highly experienced Asterisk and VoIP engineer with 10+ years of telephony expertise and 3+ years in AI-driven voice automation. I specialize in end-to-end call center automation using real-time Speech-to-Text and Text-to-Speech (TTS) — with systems comparable to platforms like air.ai and our very own QuickSmart.ai. Whether you're building a high-volume call center, automating customer engagement, or integrating AI with legacy VoIP systems — I deliver reliable, scalable, and production-grade solutions. ✅ What I Offer: Official Business WhatsApp Voice to SIP Integration Route Business WhatsApp voice calls directly to your SIP trunk, Asterisk, or VoIP system. Enable IVR, AI voice agents, and CRM workflows using official WhatsApp APIs — fully tested and production-ready. AI-Integrated Asterisk Systems Built intelligent voice agents using GPT/NLP with seamless SIP integration for dynamic voice automation and intelligent call handling. Expertise in VoIP & Telecom Platforms Sangoma, FreePBX, Dinstar (TDM ↔ IP, GSM ↔ IP), WebRTC, SIP Trunks, GSM Gateways, and more. Custom AGI/AMI Development Advanced Asterisk dialplans, AGI scripting in PHP/Python, and custom events with real-time call control. Cold Calling Automation Designed outbound AI voicebots for lead generation, follow-ups, surveys, and more. 🛠 Technical Skills: Asterisk / FreePBX / PJSIP / SIP / RTP / AMI / AGI / WebRTC Business WhatsApp API Integration Linux Servers / VoIP Gateways / DIDs / NAT & Firewall Rules AI Tools: OpenAI GPT-4, Whisper STT, Google Dialogflow, ElevenLabs, Vosk, Deepgram Networking: DNS, DHCP, VPN, RDP, Shadow Copy, LAN/WAN setup Device Integration: Dinstar, GSM, PRI, FXO/FXS, SBC 🏆 Highlights & Awards: 🇮🇳 Represented India at Intel ISEF USA for Mathematics Research (2006) 🏅 National Award Winner (Intel, 2005) for deriving the nth root formula 🎖️ Bal Vigyanic Award, State Award (NCSC), Rajyapal Scout Award 💡 Patent-worthy research in computational mathematics and telephony 🚀 Let's Build the Future of Voice: For Telephony 🌐callanywhere.co.in Try a live voicebot demo powered by GPT at: 🌐 QuickSmart.ai If you're seeking a reliable, innovative, and future-ready expert in telecom AI, VoIP systems, or Business WhatsApp integration, let's connect and collaborate!

I build and rescue complex SaaS products and business applications that need more than a basic CRUD developer. I specialize in Node.js, React/Next.js, Java/Spring Boot, PostgreSQL, AWS, Docker/Kubernetes, real-time systems, and AI integrations. With $50K+ earned on Upwork, 18 completed jobs, 100% Job Success, and Top Rated Plus status, I work with startups and businesses to take products from architecture and development through deployment and production. What I can help you with 🚀 SaaS & Product Development Build an MVP from scratch Extend an existing SaaS product Design scalable backend architecture Build APIs and complex business workflows Integrate third-party services Fix and modernize existing applications 🤖 AI & Automation AI-powered SaaS LLM integrations RAG systems AI agents and workflows OpenAI / Claude integrations AI copilots and business automation ⚡ Real-Time & Communication Systems I've worked on systems involving: SIP / VoIP FusionPBX / FreeSWITCH drachtio SIP registration Mobile push wake-up Real-time communication WebSockets Event-driven architectures 🔐 Complex Business Platforms I've also worked on platforms involving: Remote Online Notarization Identity verification Video sessions E-signatures and e-seals PDF/document workflows Payment processing Audit trails Secure user workflows Core technology Backend: Node.js, Java, Spring Boot Frontend: React, Next.js, TypeScript Database: PostgreSQL, MySQL, MongoDB, Redis Cloud: AWS, DigitalOcean Infrastructure: Docker, Kubernetes, CI/CD AI: OpenAI, Claude, LangChain, LangGraph, RAG Why clients hire me I’m particularly useful when a project has technical complexity, integrations, scaling requirements, or an existing codebase that needs to be fixed. I don't just write individual features—I can understand the complete system, make architectural decisions, build the required functionality, and take it into production. If you have an existing product that needs to be built, fixed, scaled, or taken to the next stage, let's talk.

I am consistent "Top Rated Plus" VoIP Developer on Upwork with numerous 5 star reviews including excessively positive feedback. 14+ years of experience in Custom VoIP Software Development. I have provided a wide range of IT solutions, including VoIP Development, Websites & Mobile Apps development for international businesses and start-up companies as well as for large enterprises. 🏆 Following are my area of experiences: ✓ VoIP / SIP / RTP ✓ OpenSIPs / Kamailio / OpenSER ✓ FreeSWITCH, FusionPBX, ASTPP, Lua Scripts ✓ Asterisk, FreePBX, A2billing ✓ RTPengine / MediaProxy / RTPproxy ✓ Twilio ✓ Linux & OpenSource Consulting ✓ MariaDB, MySQL, PostgreSQL (Database design & complex SQL query expert) ✓ PHP, Yii/Yii2, Apache, Nginx ✓ Android 🏆 I provide the following solutions: ✓ High scalable Least Cost Routing(LCR) with Fail-Over ✓ Session Border Controller(SBC) ✓ Click to call ✓ Class4 & Class5 Soft Switches ✓ SIP Proxy Server, SIP Load Balance & Fail-Over ✓ SIP Messaging Server, SIP Redirect Server ✓ IVR Application ✓ Fax over IP (FoIP), T38 Supported FAX Server, FAX to Email ✓ Shoutcast Server ✓ WebRTC SIP client ✓ PHP RESTfull API, Web Services for Mobile Application ✓ Web Applications ✓ Mobile Applications. My core competency lies in complete end-to-end IT solutions for VoIP, Web, and Mobile technologies. 👤 Reviews & feedback given by clients for successfully completion of largest projects ⭐⭐⭐⭐⭐ "Malay is an excellent VoIP expert and was able to do any task we could throw at him. Will be using his services again shortly as our go-to VoIP expert." ⭐⭐⭐⭐⭐ "Excellent at meeting deadlines. Outstanding at changing work hours to conform to my requirements. First-rate productivity levels. Extremely good communication and ability to explain and brainstorm in a group environment. Admirable at working with other random developers I brought into the project throughout the years. Malay and his team at Prayantech were able to tackle any task I through at them from Asterisks, FreeSwitch, Python PHP HTML JS Debian RHEL IP Tables working inside of multiple different cloud hosting environments his understanding of VPN and firewall security are excellent. I can’t say enough good things about this group I am certain we will be working together as a team for many years to come." ⭐⭐⭐⭐⭐ "Malay and his team were great to work with. Once we got in a flow, we were able to bring something to life I could not have done without him and his team. He was extremely aware of timelines and making time for our project during our "open hours" and working around the time change. Thank you Malay! Keep up the great work and I look forward to working with you soon!" ⭐⭐⭐⭐⭐ "It was a pleasure working with Malay. Very professional and to the point. they don't waste time and they want to finish your project as much as you want to."

Expert full stack developer with experiences in wide range of technologies namely Java Springboot, Kotlin, Angular, Javascript, plugins, Network Automations & Integrating all Automation processes with AI. Google Firebase, AWS, React, Android, C++, VoIP and Network Security. I provide consultancy guidance over system/software design and work on projects on active development and troubleshooting projects.