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AbhinandanVijan/README.md

Hey, I'm Abhinandan Vijan 👋

Software Engineer — .NET/C# • APIs • Full-Stack Apps • AI-Enabled Workflows
Building reliable backend systems, business applications, and practical AI-powered tools.

open to work email LinkedIn Location USA


🚀 About Me

  • Backend-focused software engineer building scalable APIs, full-stack apps, and AI-assisted workflows
  • Strong public project work across .NET 8, ASP.NET Core, React, Angular, PostgreSQL, Redis, Docker, and AWS
  • Interested in enterprise software, platform engineering, cloud-native applications, and developer productivity tools
  • I like projects that combine clean architecture, practical UX, and measurable business value

🔧 Tech Stack

Languages: C#, Python, SQL, TypeScript, JavaScript

Backend: .NET 8, ASP.NET Core Web API, Minimal APIs, EF Core, JWT Auth, REST APIs

Frontend: Angular, React, Vite, TailwindCSS, Gradio

Data & Infra: PostgreSQL, SQLite, Redis, Docker, AWS (S3, SQS, RDS, EC2), Nginx

AI / ML: OpenAI API, OCR pipelines, Vision Transformers, semantic search

Tools: Swagger / OpenAPI, GitHub Actions, Git, Postman, Serilog

🧭 What I’m Focused On

  • Building AI Health Platform: async document ingestion, OCR processing, role-based review workflows, and AWS deployment
  • Growing ExpanseManager: a personal expense tracker with bank transaction integration
  • Exploring API Gateway patterns: routing, auth, logging, and distributed rate limiting
  • Shipping AI productivity features: summarization, sentiment, translation, and smart writing assistance inside support workflows

🌟 Featured Projects

Stack: .NET 8 API • Angular • Python OCR Worker • PostgreSQL • AWS • Docker • Nginx

  • Built an async document-to-insight pipeline using uploads, queue-backed OCR processing, and normalized data persistence
  • Exposed secure REST APIs for authentication, uploads, processing status, and insight generation
  • Added role-based navigation and clinician review workflows for recommendation approval
  • Deployed the platform on AWS with S3, EC2, RDS, and SQS

Stack: .NET 8 Web API • React • Vite • PostgreSQL • EF Core • TailwindCSS

  • Built a full-stack expense-sharing app with equal, unequal, and percentage-based splits
  • Implemented JWT authentication, BCrypt password hashing, and structured logging with Serilog
  • Used PostgreSQL xmin optimistic concurrency to prevent conflicting updates
  • Added clean group, expense, and balance workflows with React + Axios

Stack: .NET 8 Minimal API • Redis • Docker • FastAPI • Node

  • Implemented a gateway with centralized routing and request handling
  • Added a distributed sliding-window rate limiter enforcing 10 requests / 10 seconds per apiKey + route
  • Routed traffic across multiple downstream services in .NET, FastAPI, and Node
  • Packaged the system with Docker Compose for local orchestration

Stack: TypeScript • CKEditor • OpenAI API

  • Built AI-powered support workflow features for Request Tracker 6
  • Added autocomplete to help users draft responses faster
  • Implemented AI filters for tone adjustment, suggestions, and translation
  • Added ticket sentiment classification and automatic summarization

Stack: Python • Gradio • Vision Transformers • SQLite

  • Built an AI-powered image captioning and semantic search platform
  • Supports text-to-image and image-to-image retrieval
  • Stores images, captions, and embeddings in SQLite for lightweight search
  • Ships as an end-to-end ML application with a simple interactive UI

🛠️ Currently Building

A personal expense tracker and manager with bank transaction integration.
This is my active work-in-progress project focused on practical financial workflows and clean backend design.


🗂️ Repo Index


Thanks for visiting — happy to connect! ✨

Pinned Loading

  1. AgentForce_Agentic_AI AgentForce_Agentic_AI Public

    Repository to explore Agentic AI with Crew AI

    Python

  2. AI_Health_Platform AI_Health_Platform Public

    Intellignet health monitoring and life style recommendation platform with Human in the loop validation

    C# 1

  3. PixeLens PixeLens Public

    PixeLens: Intelligent Image Captioning and Search

    Jupyter Notebook

  4. Splitwise_Net_Core Splitwise_Net_Core Public

    An expanse sharing application

    C#

  5. rt-extension-ai rt-extension-ai Public

    Forked from Neilpatel5502/rt-extension-ai

    AI Extension for request tracker ticket management system

    TypeScript

  6. ApiGateway_RateLimiter ApiGateway_RateLimiter Public

    C#