Backend Developer with 3+ years of experience building production systems across Python and .NET. I've worked across the stack, from T-SQL ETL pipelines and ASP.NET Core APIs to financial data pipelines on Azure Databricks, AI integrations with OpenAI and LangChain, and automation systems using Selenium and Playwright. Some things I've shipped: Financial data pipelines ingesting from external APIs into Delta Lake via Databricks and Apache Spark Healthcare Practice Management System handling end-to-end billing, claims, and payment workflows Multimodal Instagram analyzer using OpenAI Whisper, GPT, and vision APIs across 10-15 managed accounts RAG pipeline over large public repositories using ChromaDB and OpenAI embeddings manim-Astronomy, an open source Python library for astronomical animations, published on PyPI Currently open to remote Backend, Data Engineering, or AI/ML roles.

Hassam ul Haq Janjua

Backend Developer with 3+ years of experience building production systems across Python and .NET. I've worked across the stack, from T-SQL ETL pipelines and ASP.NET Core APIs to financial data pipelines on Azure Databricks, AI integrations with OpenAI and LangChain, and automation systems using Selenium and Playwright. Some things I've shipped: Financial data pipelines ingesting from external APIs into Delta Lake via Databricks and Apache Spark Healthcare Practice Management System handling end-to-end billing, claims, and payment workflows Multimodal Instagram analyzer using OpenAI Whisper, GPT, and vision APIs across 10-15 managed accounts RAG pipeline over large public repositories using ChromaDB and OpenAI embeddings manim-Astronomy, an open source Python library for astronomical animations, published on PyPI Currently open to remote Backend, Data Engineering, or AI/ML roles.

Available to hire

Backend Developer with 3+ years of experience building production systems across Python and .NET.

I’ve worked across the stack, from T-SQL ETL pipelines and ASP.NET Core APIs to financial data pipelines on Azure Databricks, AI integrations with OpenAI and LangChain, and automation systems using Selenium and Playwright.

Some things I’ve shipped:

Financial data pipelines ingesting from external APIs into Delta Lake via Databricks and Apache Spark
Healthcare Practice Management System handling end-to-end billing, claims, and payment workflows
Multimodal Instagram analyzer using OpenAI Whisper, GPT, and vision APIs across 10-15 managed accounts
RAG pipeline over large public repositories using ChromaDB and OpenAI embeddings
manim-Astronomy, an open source Python library for astronomical animations, published on PyPI

Currently open to remote Backend, Data Engineering, or AI/ML roles.

See more

Experience Level

Expert
Expert
Intermediate
Intermediate
Intermediate

Language

English
Advanced

Work Experience

Backend Developer (Scala & Python) at SOFIT Consultancy (Pvt) Ltd
March 1, 2026 - Present
Backend development for financial data pipelines: ingesting data from external APIs into PostgreSQL, applying Scala/Python transformations, and loading into Delta Lake for enterprise data warehousing; processing large-scale datasets with Databricks and managing pipeline configurations and metadata in PostgreSQL.
Junior ML & DL Developer — LangChain & RAG at CompuFlair LLC
August 1, 2025 - Present
Built a retrieval-augmented generation pipeline using ChromaDB and OpenAI text-embedding-3-small over the 3Blue1Brown repository, enabling semantic retrieval of reusable Manim scenes; developed LangChain-based tooling integrating YouTube Data API to analyze engagement metrics and generate data-driven video topic recommendations; maintained ML/DL training repositories with improved docs and dependency management; created physics-inspired AI explainer visualizations.
Backend Developer (Python) at KWJA Holding USA
January 1, 2024 - September 30, 2024
Built a multimodal Instagram post analyzer using vision API for image content, OpenAI Whisper for video transcription, and GPT to generate context-aware comments; developed RESTful APIs (Flask/FastAPI) for competitor research, sales tracking, and advertising for an e-commerce platform; integrated Twilio SMS/WhatsApp for real-time alerts and created Google Sheets automations for trend tracking.
Backend Developer (.NET Core) at Star Healthcare Technologies
December 1, 2023 - August 31, 2025
Engineered claims submission, automated file processing, and data import modules for a healthcare Practice Management System, enabling end-to-end billing workflows across onboarded clients; built T-SQL ETL pipelines, real-time notifications with SignalR, payment processing with Stripe, and automated background jobs with Hangfire and email-based reporting.
AI Developer, Intern at National Center for Physics
June 1, 2022 - August 31, 2022
Built a CNN classifier for cancer cell type classification and generated synthetic training data using GANs; implemented NSGA-II optimization for multi-objective problems.

Education

BS Physics at Pakistan Institute of Engineering and Applied Sciences
January 1, 2019 - January 1, 2023

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Healthcare, Financial Services