You will get a Low-Latency Voice AI Agent using Vapi, Retell, Elevenlabs & Telephony
Top Rated
Project details
Your customers hate waiting on hold. Give them a Real-Time Voice AI Agent that answers instantly, understands context, and speaks naturally.
Most voice bots sound robotic and fail the moment a user interrupts them. I build production-grade voice infrastructure using Vapi.ai or Retell. I don't just connect APIs; I engineer for Low Latency and Natural Interaction, ensuring your AI agent sounds human.
What You Get: A deployed Voice AI agent capable of handling inbound or outbound calls. It doesn't just read a script; it listens, handles interruptions (barge-in), and executes tools (like booking appointments) in real-time.
Technical Features:
-> Sub-Second Latency: Optimized for immediate responses using Vapi’s orchestration.
-> Interruption Handling: The agent stops speaking instantly when the user interrupts.
-> Tool Calling: Integration with your calendar or CRM to perform actions mid-call.
-> Telephony Ready: Seamless integration with Twilio for real phone numbers.
The "Glass Box" Standard: You own the infrastructure. I set up the accounts in your name. You have full visibility into call logs, recordings, and costs. Pleae contact before placing an order to ensure perfect fit.
Most voice bots sound robotic and fail the moment a user interrupts them. I build production-grade voice infrastructure using Vapi.ai or Retell. I don't just connect APIs; I engineer for Low Latency and Natural Interaction, ensuring your AI agent sounds human.
What You Get: A deployed Voice AI agent capable of handling inbound or outbound calls. It doesn't just read a script; it listens, handles interruptions (barge-in), and executes tools (like booking appointments) in real-time.
Technical Features:
-> Sub-Second Latency: Optimized for immediate responses using Vapi’s orchestration.
-> Interruption Handling: The agent stops speaking instantly when the user interrupts.
-> Tool Calling: Integration with your calendar or CRM to perform actions mid-call.
-> Telephony Ready: Seamless integration with Twilio for real phone numbers.
The "Glass Box" Standard: You own the infrastructure. I set up the accounts in your name. You have full visibility into call logs, recordings, and costs. Pleae contact before placing an order to ensure perfect fit.
AI Algorithms
Large Language ModelAI Applications
AI Chatbot, AI Content Creation, AI Mobile App Development, AI Text-to-Speech, AI-Enhanced Classification, AI-Generated Code, AIOps, Automatic Speech Recognition, Conversational AI, Natural Language Generation, Natural Language Understanding, Object DetectionAI Development Language
PythonAI Tools
Azure OpenAI, Copy.ai, GitHub Copilot, Hugging Face, Jasper AI, NVIDIA AI Platform, PyTorch, Replit, TensorFlow, Word2vecAI Models
ChatGPT, DALL-E, GPT-3, GPT-4, GPT-J, GPT-Neo, LLaMA, Midjourney AI, OpenAI Codex, WhisperWhat's included $2,250
These options are included with the project scope.
$2,250
- Delivery Time 10 days
- Number of Revisions 2
- AI Model Integration
- Database Integration
- MLOps
- Natural Language Processing
- Prompt Engineering
- Source Code
Optional add-ons
You can add these on the next page.
CRM Integration (Hubstpot/Salesforce)
+$600
Custom Voice Cloning (ElevenLabs)
+$300Frequently asked questions
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DB
Didier B.
May 21, 2025
New NextJS Blog site
It was a real pleasure working with Asad, he's a really good dev and makes a very good use of the latest AI tools to maximise his productivity - I would definitely consider working with Asad again and I highly recommend him for any Javascript related work.
GG
Girish G.
Apr 28, 2025
Marketing Website
RA
Robert Hiram A.
Nov 12, 2024
Google speech-to-text API v2 integration with VAPI
Working with Asad and his team at Recto Labs has been an exceptional experience from start to finish. Their professionalism, dedication, and sheer work ethic are truly impressive. Right from the beginning, it was clear that they are committed to understanding our needs and goals in detail, ensuring that every aspect of our project was carefully considered.
One of the standout qualities of Recto Labs is their approach to problem-solving. They don’t just offer quick fixes; instead, they work closely with you to develop tailored solutions that meet complex requirements. Despite the challenges our project presented, Asad and his team went above and beyond to develop creative, custom solutions that seamlessly integrated with our existing systems, ultimately making everything function perfectly.
Their communication is excellent, with timely updates and an openness that made us feel included every step of the way. They consistently kept us informed about progress and obstacles, making sure we understood their approach and giving us confidence that they had everything under control.
One of the standout qualities of Recto Labs is their approach to problem-solving. They don’t just offer quick fixes; instead, they work closely with you to develop tailored solutions that meet complex requirements. Despite the challenges our project presented, Asad and his team went above and beyond to develop creative, custom solutions that seamlessly integrated with our existing systems, ultimately making everything function perfectly.
Their communication is excellent, with timely updates and an openness that made us feel included every step of the way. They consistently kept us informed about progress and obstacles, making sure we understood their approach and giving us confidence that they had everything under control.
RA
Robert Hiram A.
Sep 21, 2024
Marketing website on Nextjs with Prismic CMS
I recently partnered with this team to develop a new marketing website using Next.js and Prismic CMS, and the experience was outstanding from start to finish. They impressed me with their deep technical expertise and commitment to delivering a top-notch product. The website design was not only visually stunning but also far more customizable than I could have ever imagined. They really pushed the boundaries of what I thought was possible, creating a unique and engaging user experience that perfectly reflects my brand.
What truly sets this team apart is their exceptional communication skills. They took the time to understand my vision and needs, providing valuable insights and suggestions along the way. Every step of the project was clearly explained, and they were always available to answer questions or make adjustments, no matter how small. Their attention to detail and dedication to meeting deadlines was evident, making the entire process smooth and stress-free.
From project kickoff to final delivery, they went above and beyond to ensure my satisfaction. I felt like a valued partner throughout the entire process, not just a client. I highly recommend this team to anyone looking for a professional, reliable, and innovative approach to web development. They don’t just build websites; they create experiences that elevate your brand.
What truly sets this team apart is their exceptional communication skills. They took the time to understand my vision and needs, providing valuable insights and suggestions along the way. Every step of the project was clearly explained, and they were always available to answer questions or make adjustments, no matter how small. Their attention to detail and dedication to meeting deadlines was evident, making the entire process smooth and stress-free.
From project kickoff to final delivery, they went above and beyond to ensure my satisfaction. I felt like a valued partner throughout the entire process, not just a client. I highly recommend this team to anyone looking for a professional, reliable, and innovative approach to web development. They don’t just build websites; they create experiences that elevate your brand.
NB
Nicola B.
Sep 13, 2024
Jamstack Sanity Headless CMS with NextJS
Working with Recto was an excellent experience from start to finish. They built a fast, SEO-friendly website for us using Next.js and Sanity as the CMS. The best part is how everything is dynamic and easy to control from the CMS, making updates simple and efficient.
What sets Recto apart is their approach. Unlike other agencies that juggle multiple projects with layers of management, Recto’s team consists of just 2-3 highly skilled developers.
They work closely with you throughout the entire process, offering direct communication without the need for middlemen. We could speak directly with the developers working on our product, which made everything smoother and faster.
They were always responsive and open to making adjustments until we were completely happy with the results.
If you're looking for a team that truly cares about your project and delivers dynamic, modern websites or advanced AI and eCommerce solutions, Recto is the perfect choice. Their personal approach and focus on quality made a real difference for us.
What sets Recto apart is their approach. Unlike other agencies that juggle multiple projects with layers of management, Recto’s team consists of just 2-3 highly skilled developers.
They work closely with you throughout the entire process, offering direct communication without the need for middlemen. We could speak directly with the developers working on our product, which made everything smoother and faster.
They were always responsive and open to making adjustments until we were completely happy with the results.
If you're looking for a team that truly cares about your project and delivers dynamic, modern websites or advanced AI and eCommerce solutions, Recto is the perfect choice. Their personal approach and focus on quality made a real difference for us.
About Asad
Senior Next.js Developer | SaaS, Agentic AI & Headless CMS
100%
Job Success
Lahore Cantt, Pakistan - 8:13 pm local time
My recent work includes rescuing a failing AI system that cut a client's prospecting time by 63%, and engineering a viral Icelandic Voice AI product that solved a language no existing model could handle accurately — securing the startup's seed funding. Whether I'm replacing a fragile no-code B2B SaaS MVP to automate 90% of customer interactions, or delivering 100/100 Lighthouse headless CMS and Jamstack sites for marketing teams that need zero developer dependency, I build for scale, speed, and absolute reliability.
❯ Senior Next.js developer — B2B SaaS, Agentic AI & Headless CMS
❯ Architect-first: system design before a single line of code
❯ Client owns every line of code from day one — no hostages, no lock-in
❯ Publisher of Doctrine — production-honest tech comparisons across 50+ tools
❯ AI-accelerated delivery via Claude Code, Cursor & GitHub Copilot
❯ Long-term partner, not a ticket-closer
🚫 No copy-paste AI snippets. No MVPs engineered to be rewritten later.
━━━ HOW I WORK ━━━
I don't build demos, I architect systems that survive production. Most developers ship what you ask for. I stress-test what you're asking for before writing a line, because the most expensive code is the code you have to throw away. I think like a founder, build like an architect, and deliver like someone with skin in the game.
I also publish Doctrine, a public technology intelligence hub with production-honest comparisons across 50+ tools. It's the same evaluation framework I apply before recommending any stack to a client. No vendor bias. No affiliate noise.
🎯 Whether you searched for a Next.js developer, React developer, full stack TypeScript engineer, Jamstack developer, headless CMS specialist, AI developer, or RAG pipeline engineer — you need someone who builds with Sanity, Prismic, Contentful, Payload, or Strapi, or is launching a B2B SaaS, building agentic AI workflows, or developing voice AI products. Whatever term you used, the work is the same, and it's what I do.
━━━ WHAT I BUILD ━━━
⬢ AGENTIC AI SYSTEMS
Not AI wrappers — production RAG pipelines, voice AI agents, and LLM infrastructure that executes real workflows, calls external APIs, and makes deterministic decisions on your proprietary data.
⬢ SAAS PLATFORM ENGINEERING
Multi-tenant B2B SaaS platforms built beyond MVP — scalable PLG engines with role-based access, billing, API integrations, and AI-ready architecture that survives from launch to IPO.
⬢ COMPOSABLE WEB & JAMSTACK
Headless CMS and Next.js frontends decoupled from content — blazing-fast Jamstack sites with 100/100 Lighthouse, instant indexing, and zero developer dependency for your marketing team.
━━━ CORE CAPABILITIES ━━━
⚡ JAVASCRIPT FRAMEWORKS:
↳ Hybrid rendering, App Router, React Server Components, edge caching, Core Web Vitals optimization, 100/100 Lighthouse scores.
🔹 Next.js / React / TypeScript / Astro / Gatsby / Remix / Hydrogen / Nuxt / SvelteKit
🌐 HEADLESS CMS & JAMSTACK
↳ Visual Builders — drag-and-drop editing, zero-code content updates, live previews, brand-safe publishing, no developer dependency.
🔹 Storyblok / Prismic / Builder / ButterCMS / Webflow
↳ API-First / Cloud — structured content modeling, CDN-delivered APIs, webhook ISR, real-time previews, multi-locale and multi-site support.
🔹 Sanity / Contentful / Hygraph / DatoCMS / Ghost
↳ Self-Hosted / Open Source — full data ownership, REST + GraphQL APIs, role-based access controls, no vendor lock-in.
🔹 Strapi / Payload CMS / Directus / KeystoneJS / WordPress (Headless)
↳ Git-Based — content-in-Git workflows, PR-based editorial, markdown-native, zero CMS licensing costs.
🔹 TinaCMS / Decap CMS
All integrations: on-demand ISR / SSG / live preview channels / API hooks / Zero downtime / instant indexing / strong Core Web Vitals
🧠 AGENTIC AI, RAG & CHATBOT DEVELOPMENT
↳ LLM orchestration, RAG pipelines, voice AI agents, tool calling, CRM-connected workflows, streaming responses, production-grade reliability.
🔹 SDKs: Vercel AI SDK / LangChain / Mastra / OpenAI / Anthropic
🔹 DBs: Pinecone / Qdrant / Chroma
🔹 Voice AI: Vapi / Retell AI
🔹 CRMs: HubSpot / Salesforce / Airtable / Outlook / Google Calendar
🔹 Tooling: RAG Pipelines / Tool Calling / Streaming / Function Calling
⚙️ FULL STACK & INFRASTRUCTURE
↳ Multi-tenant architecture, role-based access, payments, email, CI/CD pipelines, serverless deployments, scalable backend APIs.
🔹 Nest.js / Turborepo / Supabase / PostgreSQL / Prisma ORM / Redis
🔹 Clerk / NextAuth / Auth.js / WorkOS / Kinde / Stripe / Resend
🔹 Vercel / GitHub Actions / Docker / AWS Lambda / CI/CD Pipelines
━━━ LET'S TALK ━━━
Send me your scope. Direct technical read — what fits, what doesn't, what I'd change — within 24 hours.
Steps for completing your project
After purchasing the project, send requirements so Asad can start the project.
Delivery time starts when Asad receives requirements from you.
Asad works on your project following the steps below.
Revisions may occur after the delivery date.
Telephony Provisioning
I set up your Twilio phone number and connect it to the Voice Orchestrator.
Prompt Engineering
I craft a specialized system prompt designed for speech (short sentences, natural fillers).