Avijit Biswas | Senior Full Stack AI/ML Engineer

About Me

Backend and AI/ML engineer with 6.5+ years of experience in Python, FastAPI, PyTorch, Databricks, and cloud-based application development — designing scalable APIs, microservices, and production-grade backend systems.

Experienced in building high-performance, secure, and data-intensive applications with a focus on distributed architectures, API optimization, automation, and reliable data processing — from solution design through to production deployments.

Strong background in AI/ML, Generative AI, NLP, RAG, and Agentic AI, integrating intelligent capabilities into scalable backend platforms and enterprise solutions using Python, FastAPI, Azure OpenAI, LangChain, Docker, and Kubernetes.

Location Bangalore, India

Phone +91 7908023338

Email 2023dss1008@iitrpr.ac.in

Languages English, Hindi, Bengali, Mandarin Chinese

Open Source

GitHub contribution activity for @avijit4000 — 225 contributions in 2025, 139 in the last year, and steady work since 2022.

View GitHub Profile

GitHub contribution graph for the last 12 months showing 139 contributions

GitHub contribution graph for 2026 showing 91 contributions

GitHub contribution graph for 2025 showing 225 contributions

GitHub contribution graph for 2024 showing 103 contributions

GitHub contribution graph for 2023 showing 137 contributions

GitHub contribution graph for 2022 showing 28 contributions

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Technical Skills

Tools & Technologies

AI & Generative AI

Machine LearningDeep LearningNLPComputer Vision PyTorchHugging FaceLLMsMultimodal LLMs Generative AIAgentic AIRAGCAG Prompt EngineeringAzure OpenAILangChainLangGraph LangSmithAutoGen

Data Science & Optimization

Mathematical ModelingOperations ResearchOptimization Linear ProgrammingNetwork OptimizationPredictive Analytics Prescriptive AnalyticsStatistical AnalysisTime Series Forecasting PandasNumPy

Languages & Frameworks

PythonJavaScriptReactNode.js FastAPIREST APIsGraphQLDjango FlaskSQLPostgreSQLNoSQL MongoDBHTML5CSS3Bootstrap

Vector DBs & Data

PineconeChromaDBFAISSSnowflake Azure Data LakeDatabricksKafkaRedis

Cloud & DevOps

AWS (EC2, S3, Elastic Beanstalk)AzureGCPDocker KubernetesCI/CDGitDevOps JWT

Developer Tools

PostmanVS CodeTableauStreamlit

Career

Professional Experience

Principal Engineer

Nagarro · Remote — Bangalore, India / USA

May 2026 – Present

Developing a multi-layer backend orchestration system using AI/LLMs, MCP, and IDP-based authentication to securely manage agents, tools, APIs, and enterprise workflows.

Sr. AI Engineer

WIPRO (Optum, USA) · Hybrid — USA / India

Jun 2025 – Present

Designed and developed scalable backend applications and APIs using Python, FastAPI, and cloud services, focusing on high-performance processing, reliable data flows, and production-ready architectures.
Architected and optimized backend services integrating AI, APIs, data platforms, and cloud infrastructure, with emphasis on scalability, security, performance optimization, and system reliability.
Collaborated with cross-functional engineering and business teams on solution design, technical implementations, and production deployments, delivering secure and scalable systems aligned with business requirements.

Software Engineer

Hexaware Technologies · Remote — Pune, India

Dec 2024 – Jun 2025

Developed a smart tutor application using FastAPI and Amazon Bedrock with continuous voice interaction — AI-driven teaching that understands PDF content, explains and summarizes topics, answers subject-specific and contextual queries, and delivers an interactive, user-friendly learning experience through natural conversation.

Researcher

Research Centre on AI & e-Commerce · National Chung Cheng University, Taiwan

May – Jun 2024

Conducted AI-driven research on data interpretation, analyzing structured and unstructured data for market predictions.
Integrated APIs to support research models and fine-tuned them using HuggingFace, improving model performance.
Visualized findings and advancements in Large Language Models using Tableau to provide actionable insights for decision-making.

Engineer

CadMax (Autoliv) · Bangalore, India

Mar – Jul 2023

Utilized MySQL, Tableau, Python, and R to analyze complex datasets, applying statistical analysis, clustering, time series forecasting, and model fine-tuning to extract actionable insights.
Built predictive models using Transformers, Logistic Regression, XGBoost, and SVM.

Consultant – Development Engineer

L&T Technology Services (SCANIA) · Bangalore, India

Jan 2022 – Mar 2023

Developed and deployed machine learning models within the Customized Truck Development department, applying analysis and hypothesis testing to validate model performance and improve accuracy.
Containerized applications for the department, enabling consistent environments and efficient deployment across development and production.

Graduate Consultant

ISRO — ISTRAC · Bangalore, India

Jan 2017 – Jan 2018

Applied Data Science techniques to validate and evaluate algorithms and satellite data, improving data quality and visualization with Python, Pandas, NumPy, Matplotlib, Seaborn, and scikit-learn, leveraging OOP principles.

International Work

Working beyond borders.

Research and engineering collaborations outside India — a research residency at the Research Centre on AI & e-Commerce, National Chung Cheng University in Taiwan, plus AI and backend delivery for US-based healthcare platforms. Here are moments from my time in Taiwan.

India-based · Open to international collaborations

Taiwan Research residency at National Chung Cheng University, 2024

United States AI and backend delivery for Optum / Wipro healthcare platforms

Four languages English, Hindi, Bengali, and Mandarin Chinese

Avijit Biswas with researchers at the Taiwan-India Joint Research Center, National Chung Cheng University

Taiwan–India Joint Research Center · 2024

Avijit Biswas at the Chiang Kai-shek Memorial Hall in Taipei, Taiwan

Taipei, Taiwan · 2024

Avijit Biswas during his research visit to Taiwan

Selfie in front of the Chiang Kai-shek Memorial Hall in Taipei

Taipei, Taiwan · 2024

Avijit Biswas in Taiwan during his 2024 research visit

Taiwan · 2024

Portrait study of Avijit Biswas from his time in Taiwan

Taiwan · 2024

Taiwan Conference

Conference and forum days.

Sessions and forums at National Chung Cheng University — including the Net-Zero Future sustainability forum and exchanges with the Taiwan–India Joint Research Center on Artificial Intelligence.

13 photos · 2024

Conference and forum moments at National Chung Cheng University, Taiwan

Taiwan Conference · 2024

Portfolio

Featured Projects

Production-grade AI systems built with cutting-edge LLM and agentic technologies.

OrchestrAI

Multi-Agent Data Intelligence Chatbot

MCP-powered, Agent-to-Agent intelligent chatbot that autonomously collects and synchronizes data from multiple sources using distributed agents. Performs real-time analysis and delivers unified, OAuth-authenticated, context-aware insights.

Agentic AIMCPA2AOAuth

Resume Analyzer

LLM-Powered Candidate Matching

GPT-based system to automate extraction and interpretation of skills from resumes. Uses prompt engineering, RAG, and semantic search to match candidates to job descriptions with intelligent, context-aware ranking.

GPTRAGSemantic SearchNLP

Invoice Processing System

Azure OpenAI GPT-4 + RAG + OCR

LLM-based invoice processing leveraging Azure OpenAI GPT-4 with RAG and OCR to extract structured data from unstructured documents. Integrated with FastAPI and deployed on AWS for real-time, scalable processing.

Azure OpenAIOCRFastAPIAWS

Document Q&A System

LangChain + Vector Database

Ingests and semantically indexes large document datasets using sentence-transformers and Pinecone. Users query documents and receive context-aware answers via LangChain and LLMs through a Streamlit interface on AWS with Docker CI/CD.

LangChainPineconeStreamlitDocker

Education