Ravi Kumar

Backend engineer

I work on the part of software nobody sees until it breaks: the APIs, services, and data underneath everything else. Lately, at work and after hours, I've been bringing LLMs down there too, where answers have to be right, not just fluent.

Location
Vista, CA
Focus
Backend · LLM systems
Experience
11 years
Status
Open to new roles
01Selected work

Things I've built

  1. 01

    Trinetra

    A fact-checking agent written in Python from scratch — no LangChain, no LangGraph. Give it a claim and it searches the web through Tavily, then returns a structured JSON verdict with citations. Built to understand the raw agent loop before reaching for abstractions.

    Python · Gemini · Tavily

    GitHub
    2026
  2. 02

    Insight Relay

    A modular research pipeline that chains three LLM-driven agents to turn a raw topic into a structured, decision-ready report. Built for analysts who want usable insight without writing prompts or API boilerplate.

    Python · Ollama · Cerebras

    GitHub
    2026
  3. 03

    Tool Fox

    A developer toolkit that keeps a dozen small utilities in one tab, so you stop hunting for the site that formats JSON or decodes a JWT. Private repository.

    React · JavaScript · Tailwind CSS

    Live site
    2025
02Writing

Recent posts

03About

Building things that last.

I've spent about a decade across the stack — designing REST and GraphQL APIs, shaping database schemas, and building the React and Next.js front ends that sit on top of them. Most of my recent work has been on LLM systems: agent loops, retrieval, and tool calling, usually in Python or Spring AI.

When I'm not writing code I'm writing about it. The blog covers what I learned the hard way — system design, prompting, and the tools I keep coming back to. I'm open to full-time roles and select freelance work.

04Stack

What I work with

Languages
Java · Python · JavaScript · SQL
Frontend
React · Next.js · Tailwind CSS · HTML/CSS
Backend
Spring AI · Node.js · PostgreSQL · Redis · REST · GraphQL
Tooling
Docker · GitHub Actions · Jenkins · Vercel · Git
05Contact

Have a role or a project in mind? My inbox is open.