# Shabeeb Hasan

Voice AI and Messaging Integration Engineer

Karachi, Pakistan (UTC+5) | shabeebhasan@gmail.com | +92 335 1330495

Engineer delivering voice-agent booking flows and messaging integrations around existing products. Experience includes a team contract on a voice AI recruiting platform, queued SMS delivery, synchronization and race-condition fixes, plus Android voice calling.

## Skills
Vapi, ElevenLabs, Twilio, Next.js, TypeScript, Supabase, BullMQ, Webhooks, SMS status handling, API integration

## Selected projects

### Messaging in a voice AI recruiting platform (Client team contribution)
Built two-way SMS features, BullMQ queued delivery and status history; fixed duplicate sends and voice-session race conditions, and added applicant synchronization. Next.js and Supabase; client under NDA.
https://shabeeb.baydot.net/work/voice-sms/

### AI receptionist and appointment booking (Portfolio implementation)
Built inbound voice-agent booking and receptionist flows using Vapi, ElevenLabs and Twilio telephony.
https://shabeeb.baydot.net/portfolio/ai-receptionist-for-appointment-booking/

### Android chat and voice calling (Client work)
Built an Android/Java application with Sinch voice calls, Parse messaging, incoming-call controls and push notifications.
https://shabeeb.baydot.net/portfolio/chat-voice-calling-android-app-sinch/

### LLM import and inference services (Client work)
Built Python data import, transformation and inference microservices with unit, integration and component testing, Docker and GCP managed services.
https://shabeeb.baydot.net/work/llm-pipeline/

## Experience

Independent Software Engineer and Consultant | Nov 2015 - present
Client delivery across AI applications, web and mobile products. 133 completed contracts; 71% from repeat clients. Requirements, engineering, testing and handover.

Artificial Intelligence Researcher, Regex. | Apr 2026 - present
Applied AI research, model evaluation and validation.

Founder and Software Engineer, Baydot | Jan 2016 - present
Software services and own product development; AI consulting since 2020.

Software Developer, Dis-Connect, Germany | Nov 2024 - Jul 2026
PHP/Yii2 and SAP integration; Expo emotion-analysis application and FastAPI/Celery LoRA training pipelines.

Software Developer, Synapse Consulting | Jan 2014 - Mar 2016
Web, mobile and desktop application delivery for agency clients.

## Education
PhD Computer Science, University of Karachi, in progress.
MPhil Computer Science, University of Karachi, 2019-2021.
MS Computer Science, IBA Karachi, 2017-2018.
BS Software Engineering, University of Karachi, 2012-2015.