Available for new projects

ISHAN
CHAKRABORTY

QA Engineer & AI/ML Developer | Python Backend Developer

AI/ML Testing Specialist | RAG & Agentic AI Enthusiast | Full Stack Developer
Ishan Chakraborty

About Me

Results-driven QA Engineer, AI/ML Developer & Python Backend Developer with 4+ years of experience. Specialized in building and testing AI/ML systems — from developing RAG pipelines, Agentic AI workflows, and NLP applications to validating LLM models and Generative AI platforms. Hands-on expertise across all major AI providers: OpenAI (GPT, DALL-E, Whisper, TTS), Google Gemini (Pro, Flash, Embedding), and Anthropic Claude. Skilled in embedding models, RAG architectures, Text-to-Speech, Speech-to-Text, and image generation models. Proficient in Python backend development (FastAPI, Flask), frontend technologies (React.js, Next.js), and CI/CD pipelines.

Skills

AI/ML Development

LLM (GPT, Gemini, Claude)RAG SystemsAgentic AIGenerative AINLPOpenAI APIGoogle Gemini APIAnthropic Claude APIEmbedding ModelsImage Generation (DALL-E, Imagen)Text-to-Speech (TTS)Speech-to-Text (STT / Whisper)LangChainLlamaIndexCrewAIHuggingFaceMilvusChromaDBscikit-learnStreamlit

QA & Testing

Robot FrameworkSeleniumPlaywrightPostmanLocustJMeterAPI TestingPerformance Testing

Languages & Tools

PythonJavaScriptJavaC#React.jsNext.jsFastAPIFlaskDockerKubernetesGitSQLHTML/CSS

Education

Bachelor of Engineering (Electronics & Communication)

RKDF University, Bhopal
2019

Higher Secondary Certificate

Lords Universal Junior College, Mumbai
2015

Certifications

  • Python Programming- Udemy
  • Docker & Containerization- Udemy
  • Google Analytics- Basic & Advanced

Interests

FootballChessGame Development (Unity & C#)Testing Emerging AI TechnologiesPhotographyVideo GamingVideo EditingCooking

Professional Experience

My journey in the tech industry.

Freelance Python Backend Developer

April 2026 – Present
Metropolitan Stock Exchange of India (MSEI) logo
Metropolitan Stock Exchange of India (MSEI)

Architected a robust Python backend service with REST API endpoints for real-time stock market ticker data including SX40 Index, Forex rates, and financial instrument pricing. Integrated the API with a Next.js website and developed an animated LED Ticker UI. Engineered real-time financial data pipelines for equity, currency derivatives, and debt market segments.

PythonFastAPIREST APINext.jsReal-time DataFinTechStock Market

QA Engineer

January 2024 – December 2025
Katonic.ai logo
Katonic.ai

Executed specialized testing of Large Language Models and Generative AI systems. Validated RAG system performance and tested Agentic AI workflows. Developed automation frameworks using Robot Framework with Docker. Performed extensive API and performance testing using Postman, Locust, and JMeter.

AI/ML TestingRobot FrameworkDockerRAGLLMAPI Testing

Data Scientist

September 2021 – January 2024
Katonic.ai logo
Katonic.ai

Led predictive analytics projects and deployed production-ready ML applications using Streamlit. Built Sentiment Analyzer and Mask Detection applications. Contributed to Katonic MLOps & GENAI Platform QA. Developed NLP models and computer vision solutions for real-world business problems.

Data SciencePythonStreamlitNLPComputer VisionMLOps

Test Engineer Intern

January 2020 – March 2020
Sectona logo
Sectona

Conducted thorough testing of security-related user interfaces for Privileged Access Management (PAM) software. Integrated and tested UI compatibility across Linux and Windows environments. Documented test cases and reported defects using bug tracking tools.

Security TestingManual TestingUI ValidationPAM

Featured Projects

A collection of my recent work, showcasing my skills in full-stack development and design.

MCP OpenAI Image Generator
View Project
MCP OpenAI Image Generator
A secure MCP (Model Context Protocol) server for generating images using OpenAI GPT Image models. Integrates with Claude Code, Cursor, VS Code & GitHub Copilot. Features rate limiting, API key validation, automatic workspace image saving, and production-ready deployment on Render.
YesBill – AI Billing Tracker
View Project
YesBill – AI Billing Tracker
Full-stack AI-powered household service billing tracker. Mark YES/NO deliveries, auto-calculate monthly bills, export PDF invoices, and get AI-generated summaries. Built with React, FastAPI, Supabase & GPT — supports OpenAI, Anthropic, and Google AI.
SentimentScope NLP Analyzer
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SentimentScope NLP Analyzer
AI-powered sentiment analysis web app built with Streamlit & TextBlob NLP. Real-time emotion detection with confidence scoring, security features, and professional UI.
DocForge Web-to-PDF
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DocForge Web-to-PDF
Open-source intelligent web-to-PDF converter. Transform entire websites into professional PDF documents with smart crawling, sitemap detection, and beautiful formatting.
AI Sentiment Analyzer
View Project
AI Sentiment Analyzer
Advanced AI sentiment analysis with OpenAI GPT-4/GPT-5. Features real-time validation, reasoning transparency, 4-type classification, and confidence metrics.
Document Knowledge Retrieval
View Project
Document Knowledge Retrieval
A RAG-powered document analysis tool using OpenAI, CrewAI, and Milvus for intelligent document querying and knowledge extraction from large document corpora.
HeliosConnect – AI Networking Agent
View Project
HeliosConnect – AI Networking Agent
AI-powered LinkedIn networking agent that automates intelligent connection requests and personalized outreach messages using GPT-4, driving professional network growth.
Robot Framework GitHub Action
View Project
Robot Framework GitHub Action
GitHub Action for running Robot Framework tests using Docker containerization for seamless CI/CD pipeline integration and automated test reporting.
EA Stock Dashboard
View Project
EA Stock Dashboard
Interactive dashboard combining EA stock data with user behavior analysis, featuring dynamic charts and filters powered by Streamlit and data analytics.
Digital Portfolio App
View Project
Digital Portfolio App
A modern, interactive digital portfolio built with Streamlit featuring dual themes, AI/ML-inspired visual effects, and dynamic project showcasing.
Sentiment Analyzer (ML)
View Project
Sentiment Analyzer (ML)
NLP-based machine learning application for interpreting text sentiment, leveraging natural language processing and supervised learning techniques.

Get in Touch

Whether you have a question, a project idea, or just want to say hi, feel free to reach out. I'm always open to discussing new opportunities and collaborations.