Browse categories
Explore
Fiverr Pro
English
$
USD
QaisarK
@qaisarkhan11
Backend and AI Engineer for Nodejs LLMs and Voice Agents
Pakistan
English, Urdu, Hindi, Sindhi
About me
I’m a backend and AI engineer building Node.js APIs, LLM applications, voice-agent platforms, and intelligent document search. My experience includes Vertex AI, OpenAI integrations, vector search, SQL databases, and Google Cloud. I’ve developed ETL pipelines managing millions of product records and deployed cloud microservices with automated CI/CD. I help businesses connect AI with reliable backend systems—from chatbots and search to data processing and workflow automation. Message me to discuss your project.
Skills
QaisarK
Offline •
Average response time: 1 hour
See my services
Scripting
I will develop puppeteer based web automation application
Data Scraping
I will do web scrapping and create an API server
Work experience
AI Engineer
AI Dev Lab
Mar 2026 - Present • 8 mos
Developed LLM chatbot applications with Vertex AI and Model Garden. Worked on hybrid keyword and semantic document search using sparse and dense embeddings, LLM fine-tuning for business use cases, and a platform for creating voice agents. Built asynchronous notifications with GCP Pub/Sub and deployed data processors with Cloud Functions and Cloud Logging.
Backend Engineer
tawk
Jan 2023 - Feb 2026 • 3 yrs 1 mo
Developed LLM chatbot applications using Vertex AI and Model Garden, and worked on hybrid keyword and semantic document search with sparse and dense embeddings. Fine-tuned language models for business use cases. Built asynchronous notification workflows with GCP Pub/Sub and deployed external data processors using Cloud Functions and Cloud Logging.
Backend Engineer
TaggedWeb
Oct 2022 - Apr 2023 • 6 mos
Developed Express APIs for social media automation and scrapers for LinkedIn and Instagram post data. Deployed API microservices on VPS infrastructure and configured GitHub Actions CI for a four-machine cluster.
63 Reviews
| (61) | ||
| (2) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
1-5 out of 63 Reviews
Sort By
Most relevant
sauyeed
United Kingdom
Helpful?
alessandrosp271
Italy
Qaisarkhan11 is very professional and fast, he was always disposable and helped me build the project in the best way
Helpful?
arigabay1
Israel
Helpful?
stellaragencyam
Netherlands
Helpful?
mackfox
India
He is intelligent, I just feel he is busy in his other routine as well, I will surely work with him again, he is a perfect guy for Anty Dolphin Automation.
Helpful?
