GitHub - ReversibleWizard/ReversibleWizard

Building backends that think & systems that scale.

🤖 Architecting LLM-powered applications with RAG pipelines and vector search
⚙️ Backend engineering with Python, Flask, Django & REST APIs
🧩 Consistent DSA practice — Arrays, Trees, Graphs, Dynamic Programming
🌱 Currently deepening expertise in DevOps & Cloud Infrastructure
💼 Open to full-time roles & internships — [email protected]

〔 About Me 〕

class SayakMitraMajumder:
    role        = "AI Engineer · Backend Developer · Systems Builder"
    university  = "KIIT University — B.Tech, CSE (Communication Engineering)"
    focus       = ["LLM Applications", "RAG Pipelines", "Scalable Backend Systems"]
    building    = "AI-powered applications at the intersection of NLP and engineering"
    interests   = ["FinTech", "Product-Based Companies", "Distributed Systems"]
    languages   = ["Python", "Java", "JavaScript", "C++", "SQL"]

I architect backend systems powered by AI — from RAG-based retrieval pipelines to REST APIs built for production scale. My work sits at the intersection of Language Models, system design, and clean backend engineering.

〔 Tech Stack 〕

Specialized in: LLM APIs RAG Pipelines Vector DBs (Qdrant) REST API Design Prompt Engineering

〔 Featured Projects 〕

🚀 Student's Corner — AI-Powered Career & Learning Platform `[ Flagship ]`

A modular multi-agent AI platform delivering personalized career preparation, code intelligence, and adaptive learning workflows through orchestrated AI pipelines.

🏗️ Architecture & Backend

Engineered a modular FastAPI backend with a shared database/repository layer powering multiple independent AI agents from a single service layer
Integrated Spring Boot middleware handling authentication, resume parsing, and backend request orchestration between frontend and AI services
Designed persistent session architecture with MongoDB-backed pipeline and state storage, including interrupted-session recovery and graceful resumption

🤖 AI Orchestration

Built a unified platform integrating three specialized agents: AI Interviewer, Code Reviewer, and Adaptive Roadmap Generator — each operating as an isolated, stateful pipeline
Implemented multi-model orchestration across OpenAI, Anthropic (Claude), and ElevenLabs APIs, routing to the appropriate model per agent's task profile
Engineered a graph-based roadmap generation pipeline with dynamic node updates, progress tracking, and version restoration support

🤖 AI Portfolio Maker

LLM-powered backend that auto-generates personal portfolio sites

Prompt-engineered generation pipeline with context-aware LLM calls
RAG architecture using vector embeddings for personalized content retrieval
REST API layer with structured output parsing and template rendering

Python Flask LLM APIs Qdrant RAG

🎓 Intelligent Tutoring System

AI-driven adaptive learning platform with performance analytics

Adaptive assessment engine that adjusts difficulty based on learner response patterns
Real-time feedback pipeline integrated into a multi-subject student dashboard
Modular backend architecture designed for extensibility across content domains

Python AI/ML REST APIs Backend

🎬 Movie Recommendation System

Content-based recommendation engine using feature similarity

TF-IDF vectorization and cosine similarity for accurate content matching
Efficient pandas-based data pipeline processing 5,000+ movie records
Clean inference interface designed for API integration

Python Pandas NumPy Scikit-learn

🏦 Bank Management System

Role-based backend banking application with full CRUD operations

Enforces role-based access control across customer and admin tiers
Transaction integrity maintained with relational schema and constraint validation
Structured Java OOP design with clean separation of service and data layers

Java SQL OOP RBAC

〔 Problem Solving 〕

Platform	Focus Areas	Profile
LeetCode	Arrays · HashMaps · Stacks · Queues · Trees · Graphs	ReversibleWizard

Consistent practice in data structures and algorithms with emphasis on time/space complexity optimization and clean problem decomposition.

GitHub Stats Overview

〔 Certifications 〕

Open to Backend / AI Engineering roles · Full-time · Internships · Collaborations

Building systems that think. Architecting backends that scale.

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README.md		README.md

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Building backends that think & systems that scale.

〔 About Me 〕

〔 Tech Stack 〕

〔 Featured Projects 〕