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Software Engineer — Full-Stack & Systems — India

AdityaRajbhar — Software Engineer, full-stack & systems developer from India

I build software that holds up under load — considered interfaces, honest APIs, and systems that scale without drama.

View Projects→Let’s Connect

Now: Full Stack Developer at BrainFog. Building Upzy, Lookfar and Avni on the side.

01

About

Engineer, whole-stack — India

Good software is mostly good decisions — about data, about boundaries, and about what to leave out.

I’m a software engineer from India who likes working the whole depth of the stack — from the pixels people touch down to the queues, workers and databases behind them.

I recently joined BrainFog Technologies to build full-stack apps and AI automation across web and mobile. Before that I spent two years on the web platform for Landmark Aquatec’s water-treatment products: real-time dashboards over live plant telemetry, backed by FastAPI services on Google Cloud with Firestore.

On my own time I build agentic and infrastructure software: Upzy for uptime and attack-surface monitoring, Lookfar for self-hosted watcher agents, Avni, a voice-first assistant with a Rust core, and Keel, a SaaS starter kit.

I care about the decisions that don’t show up in a screenshot: where the boundaries are, what the data model actually says, what to leave out, and whether the next person can read it six months from now.

Based in
India
Now
Full Stack Developer @ BrainFog Technologies
Building
Uptime & security · AI agents · Voice assistants
Reaching for
TypeScript · Go · Rust · Python · Postgres
02

Skills & Tooling

What I reach for, grouped by where it lives

Languages

  • TypeScript
  • JavaScript
  • Python
  • Go
  • Rust
  • Kotlin
  • Java

Frontend

  • React
  • Next.js
  • Tailwind CSS
  • shadcn/ui
  • SvelteKit
  • Astro
  • Ant Design
  • React Query

Backend

  • Node.js
  • NestJS
  • ElysiaJS
  • Better Auth
  • FastAPI
  • Express
  • Spring Boot
  • GraphQL

Data

  • PostgreSQL
  • Firestore
  • MongoDB
  • Redis
  • Prisma
  • Drizzle
  • pgvector
  • SQLite
  • Kafka

Cloud & Infra

  • Google Cloud
  • AWS
  • Docker
  • Turborepo
  • Bun
  • Vercel
  • Netlify

AI

  • MCP
  • LangGraph
  • Agents & tool use
  • OpenAI API
  • Google Gemini
  • RAG pipelines
03

Selected Projects

Four I would happily walk you through, line by line

PlatformUpzy↗ github
Open

Platform · 2026 · In development

Upzy

Know it’s down before your customers do

Uptime monitoring and external attack-surface security for small teams, in one tool. Checks run every minute, passive scans grade each site A to F, and every finding comes with the exact fix for your stack and a Verify fix button.

  • HTTP, TCP, DNS and SSL checks, heartbeats, and public status pages with custom domains
  • Passive scans for certificates, headers, SPF/DMARC, subdomain takeover and CVEs ranked with CISA KEV and EPSS
  • SSRF-safe probes that pin the resolved address at connect time; opt-in AI on your own key
  • Bun
  • Turborepo
  • ElysiaJS
  • Next.js
  • PostgreSQL
  • Drizzle
  • Better Auth
Live demoSource
AI agentsLookfar↗ github
Open

AI agents · 2026 · In development

Lookfar

Agents that look far, so you don’t have to

Self-hosted watcher agents you can leave running. Describe what to watch in plain language and Lookfar checks pages, feeds and repos on a schedule, reports only what matters, and asks before it acts on your behalf. It grew out of Feedoku, my earlier RSS aggregator.

  • No change, no tokens: a free fetch, normalise, hash and diff gate runs before any model is called
  • Anything with side effects waits in an approvals inbox with the exact payload shown
  • Postgres job queue on FOR UPDATE SKIP LOCKED, SSRF-guarded fetcher, hashed API tokens
  • Go
  • SvelteKit
  • PostgreSQL
  • pgvector
  • Better Auth
  • Docker
Live demoSource
Voice AIAvni↗ github
Open

Voice AI · 2026 · In development

Avni

A voice layer for everything you own

A speech-first personal assistant that answers in about a second, acts on your devices and services, and asks before anything risky. An Android app talks to a single Rust core that routes each request to the cheapest model tier that can handle it.

  • Measured over 117 real turns: p50 about 1.0 s from speech-to-text done to first reply text
  • Tiered router: on-device rules, then a fast LLM, then a strong LLM, then background agent jobs
  • Every STT, TTS and LLM is a swappable provider; tools and skills plug in over MCP
  • Rust
  • Kotlin
  • Android
  • MCP
  • SQLite
  • Astro
Private repo — walkthrough on requestLive demo
InfrastructureKeel↗ github
Open

Infrastructure · 2026 · Open source

Keel

The backbone every SaaS ends up rebuilding

An opinionated Bun + Turborepo monorepo that wires up the boring-but-critical parts once — a typed API, auth with organisations and admin, transactional email, a shared component kit and a validated environment — so a real product can start on day one.

  • ElysiaJS API on Bun, Next.js App Router web app
  • Prisma 8 data layer, Better Auth with org + admin plugins
  • React Email via Resend, zod-validated env, oxlint / oxfmt
  • Bun
  • Turborepo
  • Next.js
  • ElysiaJS
  • Prisma
  • Better Auth
Source

Also shipped

Everything else is on GitHub
04

Experience

What I ship at work, and what I ship on my own

  1. Full Stack Developer — BrainFog Technologies

    Sep 2026 — Present

    Mumbai, India

    Building full-stack applications and AI-powered automation systems across web and mobile platforms.

    • Next.js
    • Prisma
    • Python
    • Android
    • MCP
    • AI
    • LangChain
    • LangGraph

  2. Software Developer — Landmark Aquatec

    May 2024 — Sep 2026

    Mumbai, India

    Building the web platform behind the company’s water- and sewage-treatment products — real-time dashboards for plant telemetry (sensors, pumps, valves), status and service reporting, and role-based site and customer administration. FastAPI services on Google Cloud with Firestore, a React / Next.js front end.

    • Next.js
    • React
    • TypeScript
    • FastAPI
    • Python
    • Google Cloud
    • Firestore
05

Quick answers

The questions people usually open with

What does Aditya Rajbhar do?
Aditya is a software engineer from India. He is a Full Stack Developer at BrainFog Technologies, building web, mobile and AI-automation systems. Outside work he builds Upzy (uptime and security monitoring), Lookfar (self-hosted watcher agents), Avni (a voice assistant) and Keel (a SaaS starter kit).
What is his technical stack?
Day to day: TypeScript with React and Next.js on the front end; Node.js, ElysiaJS, NestJS, FastAPI, Go and Rust on the back end, with SvelteKit and Kotlin where they fit; PostgreSQL, Firestore, Redis and Prisma/Drizzle for data; Docker, Turborepo and Google Cloud for infrastructure.
Is he open to new opportunities?
Yes — Aditya is open to roles and projects involving full-stack product work, distributed systems, or AI agents and tooling.
How do you get in touch?
The fastest way is a direct message on X (@codebyaadi). He’s also on GitHub and LinkedIn as codebyaadi.

06 — Contact

Have an idea worth building?

I’m always up for a good problem — a product to build, a system to untangle, or a role worth moving for. A direct message on X with a real question is the fastest way in. Cold sales pitches get ignored.

Start a conversation