Ahamed Refai S

B.Sc Computer Science graduate with hands-on experience in Backend Development, AI/ML and Generative AI. Worked as a Junior Developer at BSEtec, developing production web applications using Python, FastAPI, and SQLite, with a focus on security, authentication, and scalable backend architecture. Developed an e-commerce platform and a Retrieval-Augmented Generation(RAG) chatbot using LangChain, Ollama, ChromaDB, FAISS, and Hugging Face embeddings.Seeking Backend Development or AI/ML Engineer roles to build systems and deliver production-ready solutions.

Junior Developer at Bricksteel Enterprises Infotech Private Limited (BSEtec) (2026-05 – 2026-06)

• Developed a production-level E-commerce application using FastAPI, Python, SQLite (ORM) with secure authentication and scalable architecture.

• Developed a RAG-based AI chatbot using LangChain, Ollama, ChromaDB, FAISS and Hugging Face Embeddings.

• Integrated document-based semantic search for project documentation and customer support.

• Built classification and regression models using Python and Scikit-learn for Data Science and AI projects.

• Developed complete ML pipelines: data preprocessing, EDA, model development, and evaluation.

• Performed data analysis and visualization using Pandas, NumPy, Matplotlib, and Seaborn.

B.Sc in Computer Science – The American College (2023 – 2026)

HSE – Union Christian Hr. Sec School (2022 – 2023)