Hamza Yousaf is a Full-Stack AI Engineer with over 6 years of experience building scalable web, mobile, and AI-powered systems. He specializes in LLM integrations, autonomous voice agents (Twilio IVR and OpenAI Realtime API), and high-concurrency platforms processing 20,000+ daily orders.

What are Hamza Yousaf's core technical specialties?

Hamza specializes in: 1) AI Agents & Voice Systems (OpenAI Realtime API, Twilio IVR, Vapi, LLM streaming); 2) Modern Full-Stack Web (React, Next.js, Node.js, PostgreSQL); 3) Mobile Development (React Native, Expo, Android, iOS); and 4) High-Concurrency Backend Architecture.

What major projects has Hamza Yousaf architected?

Key projects include: 1) An AI Appointment Automation System navigating hospital IVRs programmatically via voice; 2) A Healthcare Referral Platform extracting clinical data via OCR/LLMs for NextGen EHR; 3) A 3-app E-Commerce ecosystem handling 15k–20k daily orders; and 4) A B2B SaaS comparison platform.

Is Hamza Yousaf available for remote or relocation roles?

Yes. Hamza Yousaf is open to full-time remote roles as a Full-Stack AI Engineer, international relocation opportunities, and technical consulting on LLM and voice agent architecture.

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HOME WORK CHAT VIEW CV (PDF)CONTACT

Open to Work — Remote & Relocation

I Build Intelligence Into Software.

Full-Stack AI Engineer with 6+ years of experience building scalable web and mobile applications. Specialized in React, Next.js, Node.js, and PostgreSQL. Recently focused on AI-powered systems — integrating LLMs, realtime voice APIs, and workflow automation to build intelligent products that drive measurable business impact.

View Work View CV (PDF) Contact Me

Years Experience

20k+

Daily Orders Processed

Hospital MVPs Deployed

<Languages/>JavaScriptTypeScriptPythonSQL

<Frontend/>ReactNext.jsTailwind CSSFramer MotionRedux Toolkit

<Mobile/>React NativeExpoAndroidiOS

<Backend/>Node.jsExpressFastAPIWebSocketsREST APIs

<AI & Voice/>OpenAI Realtime APITwilio IVRVapiLLM StreamingPrompt Engineering

<Database/>PostgreSQLMongoDBFirebaseRedis

<DevOps/>DockerAWSAzureGitHub ActionsCI/CD

<Integrations/>StripeRingCentralNextGen EHROneSignalGoogle Places

<Languages/>JavaScriptTypeScriptPythonSQL

<Frontend/>ReactNext.jsTailwind CSSFramer MotionRedux Toolkit

<Mobile/>React NativeExpoAndroidiOS

<Backend/>Node.jsExpressFastAPIWebSocketsREST APIs

<AI & Voice/>OpenAI Realtime APITwilio IVRVapiLLM StreamingPrompt Engineering

<Database/>PostgreSQLMongoDBFirebaseRedis

<DevOps/>DockerAWSAzureGitHub ActionsCI/CD

<Integrations/>StripeRingCentralNextGen EHROneSignalGoogle Places

01. WHAT I DO

Core Engineering Capabilities

AI Agents & Automation

Autonomous voice agents, LLM pipelines, structured data extraction, and end-to-end workflow automation using OpenAI Realtime API and Twilio.

Voice & Telephony Systems

IVR orchestration, DTMF navigation, real-time speech-to-text, and call flow automation with Twilio and Vapi.

Full-Stack & Mobile

Scalable web apps with Next.js & Node.js, cross-platform mobile with React Native. High-concurrency backends with PostgreSQL and WebSockets.

Cloud & DevOps

AWS & Azure infrastructure, Docker containerization, GitHub Actions CI/CD, and multi-environment deployment pipelines.

02. SELECTED WORKS

Case Studies

View Github

Flagship Architecture Case Study

Realtime Voice + IVR Orchestration

AI Appointment Automation System

Autonomous B2C platform that collects patient data via chat and voice, navigates hospital IVR phone systems programmatically using DTMF, and books appointments end-to-end — no human intervention required.

Interactive Architecture Pipeline

Click any node to inspect data contract

Stage Spec: Voice Engine (Realtime API)

Protocol:WebSocket / Chunked JSON & PCM

OpenAI Realtime API / Vapi engine performing streaming speech recognition, conversational turn-taking, interrupt detection, and real-time synthesis.

Component Role: Realtime speech-to-speech reasoning

Data Contract: Model audio: PCM / resampled

Audio Ingress: μ-law / 8 kHzModel Audio: PCM / resampledSimulated Latency: ~520ms (PSTN-to-speech)

Deterministic Tool Boundary

OpenAI Realtime APITwilio IVRVapiNode.js

Live Pilot DeploymentBidirectional WebSocket Audio

OCR + LLM + EHR Integration

Healthcare Referral Platform

AI-powered referral processing pipeline: ingests faxes via RingCentral, extracts structured data with OCR and LLMs, synchronizes patient records with NextGen EHR. Adopted by two hospitals, one paying client.

OCRLLM ExtractionNextGen EHRRingCentral

15,000–20,000 Daily Orders

E-Commerce Tri-App Ecosystem

Three interconnected applications (User, Rider, Merchant) handling high-concurrency order flows with live GPS tracking, integrated wallet and bill payment systems, and real-time synchronization.

React NativeNode.jsPostgreSQLSocket.io

Hospitality & Travel Software

B2B SaaS Comparison Platform

Subscription-based SaaS platform enabling hospitality businesses to compare and integrate software tools. Features onboarding workflows, RBAC access control, and scalable PostgreSQL-backed REST APIs.

Next.jsNode.jsPostgreSQLStripe

03. CAREER PATH

Professional Journey

Download Full Curriculum Vitae (PDF)

Droidor

Full-Stack AI Engineer

Mar 2021 – May 2026

Built AI-powered healthcare automation systems and a high-concurrency e-commerce ecosystem across 5+ years.

Built AI Appointment Automation System — autonomous voice agent that navigates hospital IVR systems, collects patient data, and books appointments end-to-end.
Engineered Healthcare Referral Automation Platform using OCR + LLM extraction, NextGen EHR API integration, and RingCentral fax ingestion. MVP adopted by two hospitals including one paying client.
Architected three-application e-commerce ecosystem (User, Rider, Merchant) processing 15,000–20,000 daily orders with wallet systems and high-concurrency order management.
Developed B2B SaaS comparison platform for hospitality software with subscription billing, RBAC, and scalable REST APIs.

React NativeNext.jsNode.jsOpenAITwilioPostgreSQLAWS

VeteranLogix

React Native Developer

Sep 2019 – Nov 2020

Mobile application development for social and service-based platforms.

Developed social app with user profiles, feeds, real-time chat, and content sharing. Integrated REST APIs end-to-end.
Built service-based app enabling customers to find nearby providers via Google Maps with geolocation.
Deployed applications to Google Play Store.

React NativeAndroidiOSREST APIsGoogle Maps

Bachelor of Science in Computer Science

ARID Agriculture University, Rawalpindi

2015 – 2019

04. TECH MATRIX

What I Work With

<Languages/>

JavaScriptTypeScriptPythonSQL

<Frontend/>

ReactNext.jsTailwind CSSFramer MotionRedux Toolkit

<Mobile/>

React NativeExpoAndroidiOS

<Backend/>

Node.jsExpressFastAPIWebSocketsREST APIs

<AI & Voice/>

OpenAI Realtime APITwilio IVRVapiLLM StreamingPrompt Engineering

<Database/>

PostgreSQLMongoDBFirebaseRedis

<DevOps/>

DockerAWSAzureGitHub ActionsCI/CD

<Integrations/>

StripeRingCentralNextGen EHROneSignalGoogle Places

05. WHAT'S NEXT?

Let's Work Together

I'm open to full-time AI Engineering and Full Stack roles, as well as high-impact consulting on LLM integration, AI Voice Agents, and product architecture. Interested in companies building real AI products — not AI wrappers.

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