I will build a twilio ai voice agent, a2p 10dlc SMS app and voice API


About this gig
Struggling with Twilio API integration, A2P 10DLC rejections, or high carrier rates?
I am a Senior Software & AI Engineer with 15+ years of experience building Telephony, SMS, Voice, and CPaaS platforms using Twilio, Telnyx, SignalWire, and Plivo.
Whether you need a custom SMS/Voice SaaS platform with 99% Twilio functionality, an AI Voice Agent, or A2P 10DLC campaign approval, I deliver scalable, compliant systems.
WHAT I CAN BUILD FOR YOU:
- Custom Telephony SaaS & CPaaS Platforms (Twilio, Telnyx, SignalWire)
- A2P 10DLC & Toll-Free Registration (Brand & Campaign approval)
- AI Voice Agents (Real-time bots using GPT-4, ElevenLabs & Twilio)
- Advanced IVR & Call Centers (Call routing, voicemail, recording)
- Bulk SMS Broadcast & Auto-Responders with Webhook Dashboards
- Twilio Flex, OpenVBX, SIP Trunking & OpenSIPs Customization
- Stripe & Billing Integration for Pay-Per-Use Systems
WHY WORK WITH ME?
- 15+ Years Industry Experience
- 100% Production-Ready Code & Full Support
PLEASE MESSAGE ME BEFORE ORDERING to discuss your 10DLC or API requirements!
Get to know Mushtaq
Senior AI and FullStack Engineer, Twilio, SaaS and Automation Expert
- FromPakistan
- Member sinceOct 2014
- Avg. response time1 hour
- Last delivery4 years
Languages
English
My Portfolio
FAQ
Q: Can you help me get approved for A2P 10DLC SMS registration?
A: Yes! I assist with Brand registration, Campaign vetting, privacy policy setup, terms of service compliance, and opt-in disclosure workflows to prevent carrier rejections and message blocking.
Q: Can you build a custom platform using cheaper Twilio alternatives like Telnyx, SignalWire, or Plivo?
A: Absolutely. Twilio usage fees add up fast. I build custom CPaaS platforms using providers like Telnyx, SignalWire, or Plivo that provide 99% of Twilio's functionality (Voice, SMS, SIP, Webhooks) at up to 50–70% lower carrier costs.
Q: What features are included in a custom Twilio-like SaaS platform?
A: Multi-tenant user dashboards, SMS/Voice campaign broadcasts, live conversation inbox, call forwarding, IVR call menus, real-time webhooks, contact management, call recording, and integrated Stripe billing for reselling services.
Q: How do your AI Voice Agents work with Twilio/Telnyx?
A: I stream real-time audio from calls via WebSockets (Twilio Media Streams / Telnyx TeXML) to LLMs (OpenAI GPT-4 / Claude) and voice engines (ElevenLabs / Deepgram) for human-like conversational responses with ultra-low latency (<800ms).
Q: What is the difference between A2P 10DLC and Toll-Free verification?
A: A2P 10DLC is required for local 10-digit numbers (best for local brand presence), while Toll-Free (800/888/877) numbers require Toll-Free Verification. I set up both so your business stays 100% compliant with high deliverability.
Q: Can you connect Twilio or custom SMS/Voice triggers to my CRM or website?
A: Yes! I connect SMS/Voice events via webhooks to custom Laravel/Node.js backends, WordPress, GoHighLevel, HubSpot, Salesforce, or custom SQL/MongoDB databases.
Q: Do you build Twilio Flex & multi-level IVR Call Centers?
A: Yes, I build custom contact center workflows, Twilio Flex plugins, multi-department IVR call trees, queue management, voicemail-to-email, and live agent call transfers.
Q: Do I get full source code ownership and where is the app hosted?
A: You receive 100% full source code ownership. I deploy your platform directly onto your server (AWS, DigitalOcean, VPS, or cPanel) with complete deployment documentation.
Q: What do I need to provide before ordering?
A: You'll need your Twilio/Telnyx/SignalWire account details and an outline of your desired call or SMS flow. If you don't have accounts set up yet, message me and I will guide you step-by-step!
Q: Do you provide support after delivery?
A: Yes, all packages include post-delivery support and bug-fix guarantees to ensure your telephony app and 10DLC campaign operate smoothly.
5 reviews for this Gig
| (4) | ||
| (1) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
M 
mmapplew

United States
Mustaq was great at giving us advice
$100-$200
Price
Helpful?H hgluca

United States
He did a good job. He made necessary revisions.
$50-$100
Price
Helpful?G 
gw5150

United States
Ongoing collaborationGreat service. Hard worker. Will use his service again.
$50-$100
Price
Helpful?D 
djmikeb

Canada
Ongoing collaborationHe's an amazing the best PHP
$100-$200
Price
Helpful?A abdellatifbe874

United States
He did an excellent job quick and very efficient OK I will recommend him
$50
Price
Helpful?
5 reviews for this Gig
| (4) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
M 
mmapplew

United States
Mustaq was great at giving us advice
$100-$200
Price
Helpful?H hgluca

United States
He did a good job. He made necessary revisions.
$50-$100
Price
Helpful?G 
gw5150

United States
Ongoing collaborationGreat service. Hard worker. Will use his service again.
$50-$100
Price
Helpful?D 
djmikeb

Canada
Ongoing collaborationHe's an amazing the best PHP
$100-$200
Price
Helpful?A abdellatifbe874

United States
He did an excellent job quick and very efficient OK I will recommend him
$50
Price
Helpful?
