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Vikas K.

Vikas K.

Freeswitch/Asterisk/IVR/AI-Bot/WebRTC/Ecommerce/FAX

🔹 Overview / Summary: With over 20 years of hands-on experience in the telecom industry, I specialize in building powerful, scalable, and AI-driven voice solutions tailored to business needs. I am the founder of a successful telecom solutions company and have delivered 100+ enterprise-grade projects worldwide. I help startups, call centers, and SaaS platforms launch and scale intelligent voice platforms—from AI-based IVRs to full-scale FreeSWITCH and WebRTC-powered telephony systems. Whether you’re automating appointment booking via voice, masking phone numbers for Uber/Ola-type apps, or optimizing carrier-grade traffic, I bring real-world expertise that drives measurable outcomes. I’ve helped clients: • Build AI voice agents that handle thousands of daily calls using Rasa + Vosk + FreeSWITCH • Develop secure, scalable SIP platforms for outbound call centers • Deploy containerized telecom stacks (Docker/K8s) with real-time call control • Integrate CRM and calendars (Salesforce, Google Calendar) for real-time voice scheduling • Implement number masking and A2P SMS solutions for B2B SaaS platforms My focus is always on cost-effective, open-source-first, and production-ready solutions with fast turnaround and long-term maintainability. 🔹 Services I Offer: • 🔸 AI Voice Bot Development (Appointment Booking, Lead Capture, Call Routing) • 🔸 FreeSWITCH/Asterisk/FusionPBX Setup, Custom Modules & IVR Design • 🔸 Real-Time Voice API Integration (Twilio, Telnyx, Plivo, SIP Providers) • 🔸 CRM & Calendar Integration (Salesforce, HubSpot, Google Calendar API) • 🔸 WebRTC & Click-to-Call Systems for Web/Mobile Apps • 🔸 Call Masking & Smart Number Routing (Uber/Ola Type Use Cases) • 🔸 A2P SMS Platform Design (AI-integrated Messaging for Businesses) • 🔸 Containerized Deployment (Docker, Kubernetes, CI/CD Pipelines) • 🔸 Call Logging, CDR, Analytics Dashboards, and Call Quality Monitoring • 🔸 Security Hardening (TLS/SRTP, Encrypted Webhooks, Role-Based Access) 🔹 Tech Stack & Tools: Telephony: FreeSWITCH, Asterisk, FusionPBX, SIP.js, WebRTC AI/NLU: Rasa, Vosk, Kaldi, Botpress Programming: Node.js, Python, Go, Lua (FreeSWITCH modules) Platforms: Twilio, Plivo, Telnyx, Agora, Voximplant Cloud/DevOps: AWS, GCP, Azure, Docker, Kubernetes, GitLab CI/CD Databases: PostgreSQL, Redis, MongoDB APIs: REST, GraphQL, WebSockets CRM Integration: Salesforce, Zoho, HubSpot Monitoring: Prometheus, Grafana, ELK Stack 🔹 Experience Highlights / Notable Projects: ✅ AI Voice Booking Agent for Home Services Platform Designed a self-service voice bot using Rasa + Vosk integrated with FreeSWITCH and Google Calendar. Result: 80%+ automation in call handling. ✅ Outbound Call Center with Custom IVR & CRM Sync Built a scalable SIP platform for 200+ agents using FreeSWITCH, integrating with Salesforce and custom lead scoring logic via APIs. ✅ Click-to-Call Widget for SaaS CRM (iframe + SIP.js) Developed a modular SIP.js iframe app for browser-based calling integrated with FusionPBX and REST APIs for click-to-call features. ✅ Number Masking for Uber-type App in LATAM Implemented call masking, call routing, and reporting via FreeSWITCH + Lua + Telnyx SIP, handling 10K+ masked calls daily. ✅ AI-Powered A2P SMS Platform for Nigerian Businesses Designed a communication suite including smart SMS routing, NLP-based autoresponders, and reporting dashboards. 🔹 Certifications & Recognition • Certified VoIP Developer (Private Telecom Network) • NLP & AI Chatbot Development – Rasa Certification • Telecom Business Development – Strategic Expansion in LATAM & Africa 🔹 Why Choose Me? ✔ Proven experience across 100+ telecom & AI voice projects ✔ Strategic thinker with full-stack delivery capabilities ✔ Strong Upwork record with reliable communication ✔ Quick turnaround, clean code, full documentation ✔ Long-term support and scale-friendly architecture

🇮🇳Noida, India$45/hr100% JSS4.90 (34)Since Jul 2009
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Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#12,017 / 412k
🇮🇳Country#1,929 / 45.9k
Revenue, last 30 days
$0
Total earnings
$233k

Billed in all: $240k

World#12,017 / 412k
🇮🇳Country#1,929 / 45.9k
Per project
$4k

$0 in the last 6 months

Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇮🇳Country#14,379 / 45.9k
Projects in all
58

Across 75 contracts

64% fixed36% hourly
World#52,574 / 412k
🇮🇳Country#8,863 / 45.9k

Earnings, last 30 days

$240kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$237.5k$240.0k$242.5k$245.0kOct 8Oct 23Nov 7

Skills