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NK — Naveenkumar

Typing SVG

Who I Am

I'm a backend developer who builds things end-to-end.

Not just APIs — full systems. When a problem lands on my desk, I figure out what's needed, pick the right tools, and ship something that works. I don't wait until I know everything about a stack before starting — I learn what I need, when I need it.

My work spans backend systems, AI-powered applications, and automation pipelines. Whether it's integrating an LLM into a product, designing a REST API, or automating a broken workflow — I treat every project as an engineering problem with a concrete solution.


How I Work

Problem → Understand it deeply → Break it into parts → Build iteratively → Ship it
  • I start with the what and why before touching code
  • I prefer building something imperfect over planning something perfect
  • I write systems that are readable by humans, not just machines
  • If I don't know a tool, I learn it — that's never been a blocker
  • I hold myself accountable to working software, not just working code

What I Build

Domain What I've Done
AI Systems RAG pipelines, LLM integrations, custom chatbots with memory and context
Backend APIs Production-grade REST APIs in FastAPI & Spring Boot
Automation End-to-end workflow automation, web scraping, data pipelines
Chatbots WhatsApp Business API bots, Rasa NLU-powered assistants
Data Processing Ingestion, transformation, and visualization pipelines

Projects

Proof of work over resume lines.

RAG-Based Document QA System

Built a Retrieval-Augmented Generation pipeline that lets users query large document sets using natural language. Used LangChain, a vector store, and OpenAI under the hood — deployed as a FastAPI service. Python LangChain FastAPI OpenAI Vector DB


WhatsApp Business Chatbot

End-to-end intelligent chatbot integrated with WhatsApp Business API. Handles multi-turn conversations, intent classification via Rasa, and backend fulfillment via REST APIs. Python Rasa WhatsApp API FastAPI PostgreSQL


Automated Data Pipeline

Built a scraping-to-dashboard pipeline that collects, cleans, and visualizes structured data from multiple sources on a schedule. Reduced manual reporting effort to zero. Python Scrapy Pandas Plotly PostgreSQL


More on GitHub →


Current Focus

  • Deepening knowledge in distributed systems and system design at scale
  • Experimenting with agentic AI workflows (multi-step, tool-using LLM agents)
  • Building toward cloud-native deployments (containerization, service orchestration)
  • Actively taking on freelance projects — backend, AI integrations, automation

Tech Stack & Skills

Programming Languages

Python Java JavaScript

Frameworks & Libraries

Spring Boot Django FastAPI Rasa

Databases

MySQL PostgreSQL MongoDB

AI & Data Science

OpenAI LangChain Pandas NumPy Plotly

Web & APIs

REST API Selenium Beautiful Soup Scrapy

Tools & DevOps

Git GitHub Docker Linux


Let's Work Together

I'm open to freelance projects — especially ones where the problem is messy and the solution doesn't exist yet.

If you have a system that needs to be built, automated, or fixed — let's talk.


Streak

Activity


I don't just write code. I build things that work.

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