Hire the Best VOIP Software Engineers
in Pakistan

Hello, Thanks for visiting my profile. This is Abid Ur Rehman, a certified Asterisk Developer DCAP, VoIP Consultant, VICIDial, FreePBX SCE, 3CX v18 and v20 Certified Advanced Engineer, Elastix ECE, GoAutoDial, The SIP School SSCA, PBXWare, A2Billing, FreeSWITCH, Twilio, FusionPBX, ASTPP, Network CCNA, Windows Servers MCSE, and Linux RHCE certified expert. I graduated with a BS in Telecommunication and an MSc in Telecommunication Networks. Having over 13 years of VoIP/Linux/IT/network planning, design, development, deployment, optimization, administration, and support experience in top-notch organizations such as Telappliant Ltd., Cybergen, SCB Global, Dialer360, and Astericom. Skills and Certification: IP PBX: 3CX, Asterisk, FreePBX, Elastix, PBXware MT, FreeSWITCH, FusionPBX, Issabel, VoIPOffice AI Agents/Integration: ElevenLabs, Vapi SMS Blast/Broadcast using SignalWire, VoIP.ms, Telnyx, Anveo, Bandwidth, Plivo, Skyetel, Twilio, VoxTelesys, BulkSolutions, Flowroute, Intelepeer, and BulkVS Telecom Billing: A2Billing, ASTPP, VOS3000, and Magnus Billing. Dialer: VoiceBroadcast, VICIDial, GoAutoDial, VICIBox Multi-Server Clustering, Dialer360, Primo Dialer IP Phones: Aastra, AND phone, Algo, AudioCodes, Cisco, Cisco/Linksys, CloudTC, Cortelco, CyberData, Digium, H-Tek, Incom, Intelbras, Konftel, Mocet, Norphonic, Obihai, Panasonic, Patton, Phoenix Audio, Polycom, Snom, Thomson, Unidata, Uniden, VTech, Xorcom, Yealink, Yealink/Dreamwave IP PBX (hardware): Sangoma PBXact UC / FreePBX, Elastix IP PBX, Grandstream UCM, Yeaster S-series, Renegadepbx-1U-Appliance-with-FreePBX, Patton's gateways VoIP Providers: USA and Canada: Astericom, Twilio, VoIPdotms, Switch2VOIP, SignalWire, Anveo, Alcazarnetwork, voxbeam, Telus, RingCentral, Call Centric, Voyant (Vitelity), Nextiva, bandwidth, Altotelecom, FlowRoute, QuestBlue, sipdotus, DIDLogic, Nexmo, Plivo, siptrunkdotcom, Telnyx, IDTExpress, Zadarna SMS and Bulk SMS: I can write code for you to send and receive SMS using any Asterisk and FreeSWITCH server and through popular providers like Telnyx, Twilio, Bandwidth, VoIPdotms, and SignalWire. For bulk SMS, I can set up a code with the front end for sending bulk SMS from a CSV . UK: Fuse 2, BT, VoIPTalk, DrayTEL, Telappliant, Gamma, sipgate, VoIPFone, VoiceFlex, Voicehost, Brightstar, Yellowgrid, Gradwell, T4com Ltd, Voxbeam, and Spitfire Linux Distros: CentOS, Redhat EL, Ubuntu, OpenSUSE, Debian, Back Track (Kali Linux) Windows machines: Windows Server 2012 and 2016, Windows Desktop 11, 10, 8, 7, and XP. Cloud Platforms: AWS EC2 and LightSail, GCP, Vultr, BlueHost, HostGear, Hetzner, and Digital Ocean Coding: PHP, MySQL, Lua, XML, JSON, HTML I would be very happy to assist start-ups as well as SMEs in achieving their goals and business objectives. Thank you!!

Reman Ali is VOIP and IT Professional with more than 5 year+ of in-depth knowledge & expertise in leading Cisco, Asterisk VoIP, Freeswitch, Vicidial and FreePBX. Vast experienced in the support and development of VOIP & telecommunications projects. Excellence communication skills with highest level of customer support. Diverse expertise on operating systems (Linux & Windows) and multiple CRMs.

Every lead that waits more than 2 minutes is a lead you're losing. GoHighLevel CRM Automation, AI Voice Agent systems, and n8n Workflow Automation close that gap. Built specifically for marketing agencies and local service businesses. Right now, somewhere in your pipeline, a lead just went cold. Not because your offer was wrong. Not because the timing was off. Because no one followed up fast enough and by the time someone did, they had already moved on. That gap between "lead comes in" and "lead gets contacted" is costing you revenue every single day and it's completely fixable. Marketing agencies and local service businesses hire me when they need one system that captures, qualifies, and converts leads through AI automation. No manual work, no dropped follow-ups, no wasted ad spend. HERE IS WHAT THAT LOOKS LIKE IN PRACTICE: 1. A med spa implemented a GoHighLevel CRM automation system with AI lead scoring, cutting response time from 8 minutes to 90 seconds via an AI voice agent. Manual follow-up dropped 85%. Appointments up 40%. 2. A pet grooming business replaced their entire booking operation with an n8n multi-agent workflow and automated lead qualification over SMS, handling 100+ daily interactions with zero staff. Repeat bookings up 35% in 6 weeks. 3. A B2B sales team deployed a fully automated lead enrichment pipeline with webhook API integration, cutting processing time from 60 minutes to 6 minutes and enrichment costs by 95%. Full case studies with technical breakdown in portfolio below. WHAT I BUILD FOR YOU: 1. GoHighLevel CRM Automation Pipeline setup, smart workflows, AI lead scoring, SaaS mode, snapshots, and sub-account management Built to turn your GHL into a fully autonomous client acquisition system 2. AI Voice Agent Systems Inbound and outbound AI calling agents via Retell AI and Vapi Automated lead qualification, AI appointment setter flows, and live transfer to human closers when needed 3. n8n and Workflow Automation Multi-agent n8n workflows, Make and Zapier automation Connecting your CRM, calendar, SMS, and data systems into one uninterrupted pipeline 4. Lead Generation and Nurturing Automation Meta Ads to CRM funnels, automated lead qualification sequences SMS and WhatsApp automation via Twilio so every lead enters a system the moment they raise their hand 5. API Integration and Data Pipelines REST API and webhook infrastructure, B2B lead enrichment systems, PostgreSQL data pipelines The backend layer that makes every automation reliable and scalable TECH STACK: Automation and CRM: GoHighLevel, n8n, Make, Zapier, HubSpot Voice and Messaging: Retell AI, Vapi, Twilio, WhatsApp API AI and Intelligence: OpenAI API, LangChain, GPT-4, AI Lead Scoring Backend and Data: FastAPI, Node.js, Python, PostgreSQL, Supabase Integrations: Apollo. io, REST APIs, Webhooks, Google Workspace APIs, Meta Ads API Every day your team handles manually is a day your system should have handled automatically. I respond to every message within 24 hours, usually faster. Send me a message describing where your leads are dropping off right now. I will map out exactly what is broken and how to fix it. Straight answer, no pitch, no obligation.

20+ years expereince in VoIP/SMS setups using IVRs, asterisk , Freeswitch, MS Teams and Opensips/Kamailio and VoIP | Freeswitch | Opensips | Contact Centers| Conversational AI| Amazon Connect|MS Teams

I am a versatile IT professional with 6+ years of hands-on experience in IT support, network and server administration, cloud solutions, cybersecurity, and building infrastructure. I help businesses ensure smooth, secure, and efficient IT operations. I provide professional services in: IT Support & Consultancy: Setup, troubleshooting, and maintenance of laptops, printers, scanners, fax machines, switches, firewalls, and other IT equipment. Strategic IT guidance to optimize operations. Network Administration: Design, deployment, and troubleshooting of wired and wireless networks. Experience with network switches, routers, VOIP systems like 3CX and FreePBX, and connectivity solutions. Server Administration: Managing Windows and Linux servers, virtualization, backups, and server optimization. Cloud Solutions: Microsoft 365, AWS, managed backups, and virtualization solutions to enhance business productivity and scalability. Cybersecurity: Network security, endpoint security, vulnerability management, and ensuring your infrastructure is safe from cyber threats. Building Infrastructure: CCTV and surveillance systems setup for homes and businesses. I am committed to delivering reliable, efficient, and secure IT solutions tailored to your business needs. Let’s work together to simplify your IT and enhance your operations.

𝗔𝗜/𝗠𝗟 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗦𝗶𝗴𝗻𝗮𝗹 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺𝘀 | 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 | 𝗩𝗼𝗶𝗰𝗲 𝗔𝗜 & 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗔𝗜 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿 (𝗦𝗧𝗧/𝗧𝗧𝗦 + 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗮𝗴𝗲𝗻𝘁𝘀) | 𝗪𝗲𝗯𝗥𝗧𝗖/𝗟𝗶𝘃𝗲𝗞𝗶𝘁 | 𝗦𝗜𝗣/𝗩𝗼𝗜𝗣 (𝗧𝘄𝗶𝗹𝗶𝗼/𝗔𝘀𝘁𝗲𝗿𝗶𝘀𝗸) I build 𝘃𝗼𝗶𝗰𝗲 𝗮𝗴𝗲𝗻𝘁𝘀 and 𝗹𝗼𝘄-𝗹𝗮𝘁𝗲𝗻𝗰𝘆 𝗮𝘂𝗱𝗶𝗼/𝘃𝗶𝗱𝗲𝗼 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 that actually hold up on real calls, in production, under load. If you're fighting latency, 𝗰𝗮𝗹𝗹 𝗱𝗿𝗼𝗽𝘀, 𝗡𝗔𝗧/𝗧𝗨𝗥𝗡 𝗶𝘀𝘀𝘂𝗲𝘀, 𝗿𝗼𝗯𝗼𝘁𝗶𝗰 𝘁𝘂𝗿𝗻-𝘁𝗮𝗸𝗶𝗻𝗴, 𝗿𝗲𝗰𝗼𝗿𝗱𝗶𝗻𝗴 𝗳𝗮𝗶𝗹𝘂𝗿𝗲𝘀 or a 𝘃𝗼𝗶𝗰𝗲 𝗮𝗴𝗲𝗻𝘁 that breaks the moment a real customer interrupts it, I can take it end-to-end and ship something stable. I focus on what client's measure, response latency, barge-in handling, RTT, jitter, packet loss, concurrency and cost per call. 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝘀𝘁𝗿𝗲𝗻𝗴𝘁𝗵𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: Python, NumPy, SciPy, Pandas, Scikit-learn ML model development + evaluation Audio/signal processing pipelines Feature engineering + algorithm optimization Distributed computing concepts Real-time data handling & automation 𝗪𝗵𝗮𝘁 𝗜 𝗯𝗿𝗶𝗻𝗴 𝘁𝗼 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝘁𝗲𝗮𝗺𝘀: Research-backed algorithm design Strong mathematical and analytical foundation Production-aware AI/ML integration System-level thinking (latency, throughput, scalability) Clear documentation and reproducible workflows 𝗖𝗼𝗿𝗲 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀 (𝗦𝘂𝗺𝗺𝗮𝗿𝘆): WebRTC / LiveKit Engineering SFU scaling strategies, TURN/STUN configuration, ICE tuning Optimizing jitter, packet loss, simulcast/SVC, bitrate adaptation Debugging join failures, audio/video inconsistencies, device issues 𝗠𝗲𝗱𝗶𝗮 𝗣𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀: FFmpeg and OBS workflows for ingest → process → record → distribute Reliable multi-track recording and egress configurations Low-latency transcoding and optimized CPU/GPU usage 𝗜𝗻𝘁𝗲𝗿𝗮𝗰𝘁𝗶𝘃𝗲 & 𝟯𝗗 𝗦𝘁𝗿𝗲𝗮𝗺𝗶𝗻𝗴: Unity, Unreal and Omniverse real-time streaming setups Digital twin + avatar pipelines with synchronized audio/video Ultra-low-latency input → render → stream loops 𝗔𝗜/𝗠𝗟 & 𝗖𝗼𝗺𝗽𝘂𝘁𝗲𝗿 𝗩𝗶𝘀𝗶𝗼𝗻: Real-time OCR, text extraction, scene understanding Background removal, segmentation, enhancement Avatar/lip-sync triggers, real-time CV analytics ML inference integrated into WebRTC with strict latency control 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗢𝗯𝘀𝗲𝗿𝘃𝗮𝗯𝗶𝗹𝗶𝘁𝘆: Dockerized deployments, environment separation Monitoring (jitter, RTT, CPU/mem, packet loss, TURN usage) Alerting, runbooks, load testing, failure-mode analysis 𝗖𝗼𝗿𝗲 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀: WebRTC / LiveKit Engineering Media Pipelines Interactive & 3D Streaming AI/ML & Computer Vision DevOps & Observability 𝗠𝘆 𝗺𝗶𝘀𝘀𝗶𝗼𝗻: To create next-generation communication systems by merging AI/ML, signal processing and automation and to invent efficient algorithmic approaches that solve complex real-world challenges. Need a solid solution? Drop a text anytime