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Hi, I’m Faisal—a senior VoIP, CPaaS, and communications systems architect with 25+ years of experience designing carrier-grade, high-availability, real-time communication platforms. I build, scale, secure, and modernize voice and video systems for telecom operators, SaaS platforms, AI startups, CPaaS providers, and enterprises around the world. If it involves SIP, RTP, WebRTC, LLMs, Linux, CPaaS, or real-time media at scale, I can build it, optimize it, or rescue it. 🔑 What I Specialize In ✅ VOIP Platform Architecture (FreeSWITCH / Asterisk / Kamailio) ✅ Linux System Engineering, Security, and Optimization ✅ SIP, RTP, WebRTC, STUN/TURN, NAT Traversal ✅ Real-Time Communication (Voice & Video) at Scale ✅ AI-Powered Voice Bots, Transcription, and TTS Integration ✅ Troubleshooting SIP Call Flows, Packet Capture & Analysis (Wireshark/sngrep) 🔑 What I Do: VOIP & Real-Time Communication Architecture; FreeSWITCH / Asterisk / Kamailio / OpenSIPS platform design Carrier-grade SIP routing, NAT traversal, media handling High-availability + auto-scaling VoIP infrastructures Multi-tenant PBX, call center, and UCaaS platform development CPaaS Development & Integrations; Twilio, Plivo, Telnyx, Vonage, MessageBird Build SMS/voice/WhatsApp automation & workflows Replace/optimize expensive CPaaS architecture with self-hosted systems AI Voicebots, LLM Automation & Speech Tech (AI Integrations); Real-time voicebots using Whisper, Riva, Deepgram, Azure, ElevenLabs SIP → AI → SIP conversational call flows Real-time transcription + diarization + TTS pipelines LLM-powered call automation (ChatGPT Voice, RAG, custom models) WebRTC Application Engineering; Build custom WebRTC softphones (browser, React, Flutter) WebRTC signaling integration (SIP, custom protocols) TURN/STUN/ICE infrastructure setup QoS optimization for video/voice over WebRTC SIP Security, Hardening & Compliance; Anti-fraud protection, SIP scanning mitigation Fail2Ban, firewall tuning, SRTP/DTLS encryption STIR/SHAKEN setup & routing compliance Carrier-grade security audits & penetration checks DevOps for Real-Time Media Platforms; Docker/Kubernetes containerized VoIP workloads Auto-scaling SIP clusters, distributed media servers Monitoring with Netdata, Homer, Prometheus, Grafana CI/CD automation for telecom systems Outbound Dialers & Contact Center Systems; Predictive/preview dialers (custom-built or integrated) CRM telephony integration (HubSpot, Salesforce, Zoho) IVR, call routing, analytics dashboards Telephony Cost Optimization & Migration; Reduce Twilio/Telnyx billing by 40–70% Move from hosted CPaaS → self-hosted SIP infrastructure SIP trunk cost optimization strategies Emergency VoIP Platform Rescue; SIP call failure resolution One-way/no-audio fixes NAT, RTP, firewall, WebRTC troubleshooting 24–48h critical system recovery 🛠️ Tools & Stack VOIP Engines: FreeSWITCH, Asterisk, Kamailio, OpenSIPS Linux Distros: Ubuntu, Debian, CentOS, Alpine Protocols: SIP, RTP, SDP, SRTP, ICE, DTLS, WebRTC Monitoring: sngrep, Homer SIP Capture, Fail2Ban, Netdata DevOps: Docker, Ansible, Kubernetes (Cloud-Native VOIP) 🧠 Why Clients Work With Me 25+ years in telecom & VOIP architecture Built and scaled platforms like VdoTok using FreeSWITCH + WebRTC Performance-tuned Linux servers to handle millions of calls securely Helped startups and enterprises launch, scale, and secure VOIP stacks Expert in carrier interoperability, DID routing, and multi-tenant PBX 🧾 Sample Engagements 🔹 Migrated a legacy PBX to FreeSWITCH with SIP trunking and HA setup 🔹 Built a custom WebRTC softphone connected to Asterisk 🔹 Hardened VOIP infrastructure for international carrier with Linux + firewall tuning 🔹 Developed voice bot with NVIDIA RIVA and integrated it with SIP via FreeSWITCH 📞 Work With Me Whether you need to: Build a complete real-time communication platform Integrate AI voice bots into SIP/WebRTC Optimize or scale a VOIP system Reduce telephony costs Rescue a failing carrier-grade deployment 📞 Let’s Connect Whether you need to optimize your VOIP system, migrate to FreeSWITCH, or troubleshoot deep Linux-based issues, I can step in quickly and deliver solutions that scale and perform. 📅 I’m available for short consultations, full system builds, and long-term projects. Let me know when you're available for a quick Zoom or chat—I'm open Monday through Friday.

Do you need a reliable System Administrator to keep your servers secure, optimized, and running 24/7? I specialize in system administration, server management, and cloud infrastructure, helping businesses maintain stability, scalability, and security across hybrid environments. ⚙️ What I Do I provide end-to-end system administration and technical support for both Windows and Linux ecosystems — ensuring high performance, strong security, and minimal downtime. Core Services: 🧩 Windows & Linux Server Management (Ubuntu, CentOS, Red Hat) 🔒 Active Directory, Group Policy, and User Management ☁️ Microsoft 365 & Azure Administration (VMs, Azure AD, IAM, MFA) 🧠 Network Administration & Security (VPNs, Firewalls, Load Balancing) 💾 Backup & Disaster Recovery (Veeam, Acronis, Windows Backup) ⚙️ Server Virtualization (VMware, Hyper-V, Proxmox) 🔧 Automation & Scripting (PowerShell, Bash) 🛠️ Remote IT Support & Troubleshooting (TeamViewer, RDP, AnyDesk) 🌐 Tools & Technologies Operating Systems: Windows Server, Ubuntu, CentOS, Red Hat Platforms: Azure, Microsoft 365, VMware, Hyper-V, Proxmox Networking: Cisco ASA, Fortinet, pfSense, Nginx, HAProxy Monitoring: Nagios, PRTG, SolarWinds Backup: Veeam, Acronis, Windows Backup ⚡ Why Clients Choose Me ✅ 20+ successful system administration projects with 5-star results ✅ Proactive monitoring to prevent issues before they occur ✅ Fast response times and detailed documentation ✅ Experienced in both on-premises and cloud environments ✅ Dedicated to delivering secure, efficient, and reliable IT solutions Let’s optimize your systems for performance, security, and uptime. 💬 Contact me to discuss your infrastructure and how I can help streamline it.

Are you facing downtime, email issues, or slow system performance? Need a reliable Microsoft 365 specialist who can troubleshoot, manage, and secure your IT infrastructure — without the tech jargon? I'm a Top-Rated IT Consultant with 6+ years of hands-on experience in: 🟢 Microsoft 365 administration & migration 🟢 Tier 2/3 technical support for Windows environments 🟢 Remote IT support & managed service delivery for SMBs 🟢 System administration, server management, and RMM 🔧 What I Help Clients With: ✅ Microsoft 365 Setup, migration & configuration (Outlook, SharePoint, Teams, OneDrive) Exchange Online, Azure AD, license management Troubleshooting mailbox issues, sync problems, and email security ✅ IT Support (Level 2 & 3) Windows troubleshooting & error resolution Application crashes, login failures, performance issues Network connectivity, printer/scanner, and remote access issues Speed up slow PCs, resolve blue screen errors, patch management ✅ Managed Services & System Administration Remote monitoring (RMM tools like N‑able, Atera, etc.) Windows Server setup & maintenance Active Directory user/group policies Data backup, recovery, and endpoint protection 🎯 Why Clients Choose Me: 🔒 Trusted by clients across the US, UK, and Europe 🧩 Problem-solver with proactive communication 🛠 Fast turnaround & flexible availability ⭐ 100% Job Success | Top-Rated on Upwork ⏱ Available for ongoing or one-time support, short-term or long-term 📩 Let’s Talk I’d love to help streamline your IT systems, improve performance, and keep things running smoothly — with zero guesswork. Message me today to discuss your project or set up a quick discovery call.

✅ Top Rated Plus ✅ 100% Job Success Score Hi, I’m Waleed, a PhD in Artificial Intelligence with 12+ years of professional experience delivering high-performance AI systems, backend platforms, and cross-platform applications—from early concept to production-grade deployment. I work with startups and enterprises to design, build, and scale reliable AI-powered products with strong engineering foundations. 🔹 Core Expertise 🚀 Data Science | Machine Learning | Deep Learning | NLP | LLMs | Generative AI I have successfully delivered a broad range of AI and software projects, including: • LLM-powered Q&A systems using LangChain, GPT-4/5, RAG pipelines, custom tools, and agent-based architectures • Fine-tuning open-source LLMs such as Mistral-7B and LLaMA-2 • Text analytics: sentiment analysis, summarization, classification using modern LLM APIs • Audio AI: speech-to-text, text-to-speech, transcription, and audio intelligence pipelines • Financial ML systems: Forex price forecasting and automated trading bots • AI-driven automation: GPT-5–based Jenkins build triage, failure analysis, and root-cause detection • AI for developer productivity: GPT-5–based code reviewers and automated patch generation systems • Computer Vision: image segmentation, object detection & tracking, GANs, Stable Diffusion • Web scraping & large-scale data extraction using Selenium and BeautifulSoup (LinkedIn, Reddit, Twitter/X, Amazon, eBay, Walmart, etc.) 🔹 Systems, Desktop & Product Engineering In addition to AI, I bring deep systems and application engineering experience, allowing me to build low-latency, production-ready software: • Low-latency, cross-platform desktop applications • IDE development and developer tooling • Desktop applications using Qt and Electron • Languages: C, C++, Java, Python • Frontend & UI: React, Electron • CI/CD & automation: Jenkins This background enables me to deliver AI solutions that are fast, stable, and maintainable, not just experimental. 🔹 Backend, Cloud & Deployment I specialize in building and deploying scalable backend systems for AI-driven products: • Backend frameworks: FastAPI, Django, Flask • Databases: PostgreSQL, MySQL, SQLite, MSSQL • Cloud platforms: AWS, Azure, GCP • Containerization & orchestration: Docker, Kubernetes 🔹 What I Deliver ✅ End-to-end project delivery from scratch to production ✅ World-class CI/CD pipelines with Jenkins and automated workflows ✅ Full test coverage and quality-focused development practices ✅ Seamless integration of AI/ML systems into existing products ✅ Cloud-ready, secure, and scalable deployments ✅ Post-deployment monitoring, re-testing, and optimization I’m equally comfortable: • Launching new products from zero, or • Helping existing projects get unstuck, improve reliability, or scale I’m also happy to engage in technical consultation, architecture reviews, and AI strategy discussions. 🔹 Why Clients Choose Me • 12+ years of engineering experience + PhD-level AI expertise • Strong balance of research, engineering, and production delivery • Clear communication and long-term thinking • Focus on business impact, not just models or code 🚀 Let’s discuss how AI, LLMs, and solid engineering can accelerate your product and reduce delivery risk. Message me to get started.

An avid cyber security professional with years of experience in the field. Experienced in performing advanced penetration testing and red teaming engagements in various different environments and technology stack. In-depth knowledge in multiple disciplines including infrastructure testing, web application testing, mobile application, build reviews (Windows/Linux), network appliances, Active Directory, VPN, Citrix, VoIP, Cloud, CI/CD pipelines, and IoT security testing, as well as regulatory-based compliance auditing including PCI DSS, Cyber Essentials, ISO 27001, and CIS benchmarks. Consistently produce high quality reports for both technical and non-technical audience. Knowledge in several programming languages including Java, C/C#, .NET, PHP, Perl, and Python.

I Build robust VoIP systems and intelligent AI voicebots. I work with Asterisk, FreeSWITCH, SIP, WebRTC, ASR, TTS, and LLM-driven conversational logic. My goal is to deliver scalable voice platforms that are secure, cost-efficient, and designed to solve real business problems. What I Can Do for You - Design and deploy VoIP infrastructure (Asterisk / FreeSWITCH) - SIP trunk setup, routing, and troubleshooting - WebRTC browser-based calling integration - IVR / automated call flows and menus - AI voicebots with ASR, TTS, and LLM-driven conversational logic - Speech-to-text (Whisper or other open-source / cloud models) - Intelligent call routing, intent detection, and conversation management - Contact center solutions: queues, failover, call logging, and reporting Why Work With Me - I combine deep VoIP expertise with AI voicebot development - I focus on reliability, scalability, and performance - I deliver solutions that save time, reduce costs, and automate repetitive tasks - I communicate clearly and provide regular updates - I document solutions for easy maintenance and hand-off Skills VoIP, Asterisk, FreeSWITCH, SIP, WebRTC, ASR, TTS, Whisper, LLM Integration, IVR / Voice Flow Design, AI Voicebots, Contact Center Architecture, Linux Administration, SIP Trunking, Debugging & Monitoring. Sample Services / Projects: AI Voicebot for Customer Service -Build a voicebot that understands customer requests via ASR, interprets intent with LLM logic, and responds using TTS. Can route callers to human agents or automate business workflows. VoIP Server Deployment -Deploy Asterisk or FreeSWITCH, configure SIP trunks, extensions, failover, and test call quality. Deliver a stable, documented, and scalable setup. IVR & Call Flow Automation -Create IVR menus, routing logic, fallback paths, and integrate with AI voicebots or contact center systems. WebRTC Softphone / Browser Calling -ntegrate WebRTC calling into your application or website with signaling, TURN/STUN setup, and media configuration. VoIP Monitoring & Optimization -Implement call analytics, monitor RTP quality, and optimize call flow for reliability, scalability, and cost efficiency.