Hire the Best Twilio API Developers in California

Expert Twilio & AI Conversational Solutions Developer | Top 1% Expert-Vetted Talent AI Communication Solutions Architect specializing in Twilio integrations and conversational AI tools that transform customer interactions. As an Expert-Vetted Talent (top 1% on Upwork), I help businesses implement intelligent communication systems that deliver measurable results. I combine deep technical expertise with strategic consulting to create solutions that solve real business problems. My Expertise: Twilio Development & Integration Specialist - Full-stack Twilio platform development with 7+ years of experience - Custom SMS, voice, and messaging workflows that scale with your business - Integration of Twilio services with existing business systems and CRMs AI Conversational Tool Development - Custom chatbots, SMS bots, and voice assistants powered by ChatGPT and other LLMs - Multi-channel AI solutions (phone, SMS, WhatsApp, Facebook Messenger, live chat) - Intelligent IVR systems that improve customer experience and operational efficiency Strategic Communication Consultant - Process analysis to identify automation opportunities - ROI-focused solutions that deliver measurable business impact - Clear roadmaps for implementing AI communication strategies Results I've Delivered: - Developed a custom missed call Slack app that reduced agent response time from 30+ minutes to under 3 minutes, improving customer satisfaction and sales conversion - Created custom screen pop tools for Five9 that decreased call handling time by 6 seconds per call and reduced agent training by 4 hours per client - Built React components and plugins for custom call-center dashboards that streamlined agent workflows - Implemented multi-channel messaging flows with AI integration that provide 24/7 customer support Technology Stack: Twilio, ChatGPT (OpenAI API), Claude API, Ruby, JavaScript, React, Node.js, Bootstrap, WhatsApp Business API, Facebook Messenger API, Slack API, Airtable API, Monday.com API, Pipedrive API, Make.com API, Zapier API, Hubspot API, and more. I bring both technical expertise and business acumen to every project. Whether you need implementation support or strategic consulting on your communication systems, I'm here to help you leverage AI and cloud communication platforms to achieve your business goals. Let's discuss how we can transform your customer interactions.

✨ Senior API Integration & AI Automation Specialist | LLM & OpenAI Expert ✨ Core Expertise: API Integrations • AI Agents • LLM Applications • OpenAI API • Payment Gateways • ERP Systems • Chatbots • Microservices • Marketing Tools • Healthcare Systems • Financial Platforms • Middleware • CRM • Social Media APIs • Databases • E-commerce • Workflow Automation • HubSpot • Salesforce • QuickBooks API • NetSuite Integration • Odoo ERP Development • Zoho Books API I help businesses connect platforms, automate workflows, and build scalable AI-powered systems using APIs, LLMs, and modern backend technologies. My expertise includes API integrations, AI agents, OpenAI-powered applications, payment gateway systems, CRM/ERP synchronization, workflow automation, and custom middleware development. I focus on building reliable integrations that improve operational efficiency, reduce manual work, and scale smoothly with business growth. Core Expertise: ✔ API Integrations ✔ AI Agents & LLM Applications ✔ OpenAI API & Automation ✔ Payment Gateway Integrations ✔ QuickBooks & Xero Integrations ✔ CRM & ERP Systems ✔ Twilio, WhatsApp & Messaging APIs ✔ Webhooks & Microservices ✔ Healthcare & Financial Systems ✔ E-commerce Integrations ✔ Custom Backend Development Tech Stack: Node.js • NestJS • Python • FastAPI • Express.js • PostgreSQL • MongoDB • Redis • REST APIs • GraphQL • Docker • AWS • Firebase I’ve worked on integrations involving payment platforms, accounting systems, AI chatbots, communication APIs, SaaS products, and enterprise workflow automation systems. Why clients work with me: ✅ Clean and scalable architecture ✅ Fast communication and reliable delivery ✅ Business-focused solutions ✅ Long-term maintainable systems ✅ Strong debugging and problem-solving skills If you need an experienced developer to build secure integrations or AI-powered automation systems, feel free to invite me to your project or schedule a quick chat. Full Stack Developer | MERN Stack Developer | Base44 Developer| React.js Developer | Next.js Developer | Node.js Developer | JavaScript Developer | Web Application Development | Custom Web Applications | SaaS Development | MVP Development | Startup Developer | Scalable Web Applications | Backend Developer | Frontend Developer | API Integration | REST API Development | GraphQL API | API Developer | Third-Party Integrations | Payment Gateway Integration | Stripe | PayPal | CRM Integration | HubSpot | Zoho| Salesforce | Dashboard Development | Admin Panel Development | Automation Developer | Workflow Automation | Zapier | Make | Integromat | n8n | Database Design | MongoDB | PostgreSQL | MySQL | Firebase | Supabase | Redis | Real-Time Applications | Web Performance Optimization | Responsive Web Design | Tailwind CSS | Modern UI/UX | Cloud Deployment | AWS | Vercel | Docker | CI/CD Pipelines | GitHub Actions | Serverless Architecture | Microservices Architecture | Secure Authentication | JWT | OAuth) | Role-Based Access Control | RBAC | SaaS Platforms | Marketplace Development | Booking Systems | ERP Systems | CRM Systems | Scalable Backend Systems | Twilio API | WhatsApp API | SMS API | Messaging API | VOIP Systems | Cloud Telephony | Call Automation | Auto Dialer Systems | IVR Systems | Call Routing | WebRTC | SIP Integration | Call Recording & Analytics | CRM Calling Integration | QuickBooks Online Integration | QBO Automation | Accounting Workflow Automation | Financial Data Sync | Invoicing & Payments Sync | Expense & Transaction Automation | Bookkeeping Integrations | POS to QuickBooks Sync | Payroll & Reporting Automation | NetSuite Integration | Odoo ERP Development | Zoho Books API Integration | ERP & Accounting Software Integrations

Software developer with 20+ years experience. Many of these years in large telecommunication companies. Developed and project managed complex products. I am focused in a few areas. This focus and experience enables quicker turnaround for you. Expert in Twilio. Tier 1 partner of Twilio and recognized by Twilio itself. Expert in complex asterisk PBX setup for multi-extensions, multi-trunks, queues, hunt group, IVR. Complex IVRs, customizations and scripts for asterisk. Large PBX setup using Kamailio as proxy. Expert in developing large distributed systems using Amazon AWS. Expert in Roku. Developed several popular Roku Channels including that of Fortune 100 companies (Details provided on request)

Chatbot developer and AI voice agent specialist. I build production-grade chatbots, voice agents, AI automation, and LLM integrations using Python and FastAPI. Systems built for production, handling real users, real workloads, and delivered with complete documentation and handover. 🏆 TRUST SIGNALS ⭐ 5-star average across completed client projects 🎯 Every project endorsed by the client 💻 Production AI, voice, and backend systems delivered across multiple industries 📈 PROJECTS I HAVE DELIVERED ✅ AI phone agent using Twilio and OpenAI Realtime API, 35% reduction in call handling time, 18% improvement in customer satisfaction ✅ Multi-agent sales system using LangGraph and CrewAI, 60% improvement in outreach efficiency ✅ AI voice calling and sales automation platform with LLM-powered agents and multi-tenant architecture ✅ AI customer support and lead generation platform with RAG, vector search, and semantic retrieval ✅ AI fraud prevention platform with real-time risk analysis and up to 98% chargeback reduction 🛠️ WHAT I BUILD WITH GPT-4, Claude, OpenAI, LangChain, LangGraph, CrewAI, RAG pipelines, Pinecone, ChromaDB, Vector Search, Vapi, Retell AI, Twilio, OpenAI Realtime API, ElevenLabs, n8n, Python, FastAPI, REST APIs, WebSockets, MCP, A2A, Redis, MongoDB, PostgreSQL. 🧠 HOW I WORK ✔️ Scoped before development, built for production, not demo environments ✔️ Tested against real edge cases, not scripted happy paths ✔️ Clean architecture, scalable code, complete documentation, and handover ✔️ Fast communication throughout, you always know where things stand 📩 BUILD WITH ME Need an AI chatbot, voice agent, RAG system, AI automation, or LLM integration? Tell me what you're building, what it needs to connect to, and the outcome you want. I'll recommend the right technical approach and help you build a production-ready solution.

Hello! 👋 I build AI-powered automation systems and custom SaaS platforms that help businesses reduce manual work and scale efficiently. I specialize in developing CRM systems, workflow automation, voice/chat bots, and full-stack applications using Python (FastAPI), React/Next.js, and modern APIs. My focus is on solving real business problems through scalable and reliable solutions. Recent work includes: ✅ Full-stack marketplace and SaaS platforms with complex integrations ✅ Custom CRM system for lead management and workflow automation ✅ Voice-based automation system using Twilio for handling customer interactions I write clean, maintainable code, communicate clearly, and deliver solutions that are built to scale. If you’re looking to automate processes, build a SaaS product, or integrate AI into your system, I’m here to help.

Hi, my name is Andres. I am a full stack developer with over 15 years of experience building web applications from the ground up. I specialize in data driven AngularJS and Angular applications with NodeJS backends. If you are passionate about your vision, let's talk, I will be happy to help make it a reality.