Abhishek J.

⭐ 1,700+ hours delivered on Upwork | 14 completed projects | 10+ years building data platforms and full-stack products I help companies turn raw data into reliable pipelines and working products — end to end. Whether you need a scalable ETL pipeline, a machine learning model in production, or a complete web application, I handle architecture, development, and deployment so you get one accountable engineer instead of three separate hires. What I do best: 🔹 Data Engineering — Design and build robust ETL/ELT pipelines, data warehouses, and streaming systems using Python, SQL, Apache Spark, Airflow, Kafka, and cloud platforms (AWS/GCP/Azure). Clean, documented, monitored pipelines that don't break at 2 AM. 🔹 Data Science & ML — Exploratory analysis, predictive modeling, and ML deployment with pandas, scikit-learn, TensorFlow/PyTorch. I focus on models that actually ship, not notebooks that collect dust. 🔹 Full-Stack Development (MERN / MEAN) — Production-grade web apps with React or Angular frontends, Node.js/Express APIs, and MongoDB — plus REST/GraphQL API design, authentication, and CI/CD. 🔹 Java & Python Backend — Microservices, Spring Boot APIs, high-performance backend systems, automation scripts, and third-party integrations. Why clients work with me: ✅ Principal-level engineering experience — I have architected systems, not just written tickets ✅ Clear communication and honest timelines — you'll always know project status ✅ Clean, tested, documented code you can maintain after I'm gone ✅ Long-term reliability: 1,700+ hours logged with repeat clients on Upwork