Raj Kumar

About Raj Kumar

Experienced AI/ML Developer & Engineering Manager with 15+ years in the BFSI domain and 6+ years building and deploying enterprise-grade Artificial Intelligence and Machine Learning solutions at Cognizant. Delivered impactful data-driven systems for global clients including Walgreens, Lloyds, Halifax, BOS, TSB, and RBS/NatWest, enhancing decision-making, operational efficiency, and strategic planning through intelligent automation and analytics.• Proficient in Python, SQL, and the full data science and ML ecosystem—including Pandas, NumPy, Scikit-learn, PyTorch, Matplotlib, Seaborn, and Plotly—with advanced expertise in ML model development, legacy system modernization, and on-premise deployment using Flask, Streamlit, Hugging Face, and Pickle. Architected scalable, modular AI solutions for secure and compliant enterprise environments.• Hands-on experience in developing ML models for time-series forecasting, financial planning, and resource optimization using ARIMA, XGBoost, and LSTM, along with LLM-based applications for semantic search, classification, and natural language generation. Built robust computer vision systems using CNNs, GANs, and Diffusion Models for advanced image processing, Computer Vision and generation tasks.• Specialized in AI Agent Development using FastAPI, integrating LLM APIs (OpenAI, Hugging Face) and implementing Retrieval-Augmented Generation (RAG) architectures with Langchain, FAISS, and Pinecone. Designed intelligent pipelines for document processing, prompt enrichment, and scalable fine-tuning workflows supporting diverse industry use cases.• Led the development of curriculum-aligned AI chatbots, document-based question-answering systems, and translation models for low-resource and regional languages such as Angika GPT. Combined LLMs with traditional NLP and ML pipelines to enable real-time, human-like AI interactions across education, finance, and public service domains.• Committed to building inclusive AI systems through multilingual NLP, bilingual corpus development, and transformer model fine-tuning, promoting language accessibility and digital equity. Strong focus on Explainable AI (XAI) to ensure transparency, compliance, and stakeholder trust in mission-critical AI solutions.• Demonstrated leadership in delivering high-impact banking and analytics projects through cross-functional agile teams, with a successful onsite tenure in London (2018–2021) for UK-based financial institutions. Certified SAFe® Scrum Master, skilled in sprint planning, agile delivery, and aligning AI initiatives with business goals.

Experience

1. Engineering Manager Ai Ml Developer

   Cognizant

   Jul 2024 — Present · Pune, IN

Education

• BNS DAV Public School, Giridih, Jharkhand

  High School

  1999 — 2005

• Yagyavalkya Institute Of Technology, Jaipur, Rajasthan

  Engineer's Degree

  2006 — 2010

• Indian Institute of Technology Jodhpur

  M.Tech