_{Open the static SVG fallback ↗}

JAVA / SPRING BOOT  ·  REACT / REST / SQL  ·  AI AUTOMATION  ·  BENGALURU

> opening profile index...
> backend systems ............ ready
> product systems ............ ready
> identity: GAGAN DEEP S

I am a Full Stack Developer, Java backend engineer, and AI enthusiast building efficient, high-performance, data-driven software systems. My centre of gravity is Java, Spring Boot, REST APIs, SQL-backed systems, and clean object-oriented design — with a growing orbit around AI agents, LLM integrations, and automation.

ABOUT  ·  TOOLKIT  ·  PROJECTS  ·  EDUCATION  ·  CONTACT

profile:
  name: Gagan Deep S
  handle: Gagan-Zeus
  base: Bengaluru, India
  identity: Full Stack Developer
  centre_of_gravity:
    - Java backend development
    - SQL-driven data management
    - Scalable application systems
  exploring:
    - AI agents
    - LLM integration
    - Automation systems

Every technology below is drawn from the resume or from the implementation details of the projects listed there.

Java JavaScript Python Dart Swift Kotlin TypeScript HTML CSS

React Tailwind CSS Flutter SwiftUI Android SDK Riverpod

Spring Boot Spring Framework Hibernate/JPA Node.js Express.js REST APIs Supabase Supabase Auth Edge Functions AsyncIO

PostgreSQL MongoDB Drift/SQLite Keychain private preference storage offline-first local-first outbox-based synchronisation PostgreSQL Row Level Security (RLS)

AI Agents LLM Integration Prompt Engineering Gemini ElevenLabs GitHub Copilot SDK PDF.js Telegram Bot API GitHub API

Git GitHub Maven Docker JWT OTP OAuth QR pairing Bonjour/mDNS HTTP AirPlay AirPlay RTSP/RTP ZXing Bouncy Castle Socket.io Android NSD Accessibility APIs Notification Listener Call APIs

The work below is a map of the systems I build: connected experiences, intelligent workflows, and products designed around real constraints.

Swift · SwiftUI · Kotlin · Android SDK · Bonjour/mDNS · HTTP · AirPlay · ZXing · Bouncy Castle · Keychain

• Built a local-first Android-to-Mac continuity app for bidirectional clipboard sync, file transfer, notification mirroring, call controls, AirPlay screen/audio streaming, and battery/status presence.
• Implemented QR/token-based device pairing with Bonjour/mDNS discovery, token-authenticated LAN HTTP endpoints, Keychain/private preference storage, and automatic endpoint rediscovery.
• Developed native macOS and Android clients using Swift/SwiftUI and Kotlin, integrating Accessibility, Notification Listener, Call APIs, Android NSD, AirPlay RTSP/RTP media handling, and secure local crypto utilities.

Flutter · Dart · Riverpod · Supabase · PostgreSQL · React · TypeScript

• Addressed fragmented maternal healthcare records in rural Karnataka by connecting pregnant women, ASHA workers, and PHC doctors through a unified digital platform.
• Architected three Flutter applications backed by Supabase PostgreSQL, with an offline-first architecture using Drift/SQLite and an outbox-based synchronisation workflow.
• Implemented role-based access control using Supabase Auth and PostgreSQL Row Level Security (RLS), alongside deterministic pregnancy risk checks, bilingual Kannada/English support, and privacy-conscious QR-based record access.
• Integrated Gemini-powered healthcare assistance and ElevenLabs Kannada speech and transcription through server-side Edge Functions, keeping third-party API credentials off client devices.

React · Node.js · Express · MongoDB · PDF.js · AI / LLM Integration

• Built a dual-product legal AI for freelancer contract review and B2B policy-compliance audits.
• Delivered end-to-end contract intelligence: PDF parsing, clause extraction, high-concurrency Copilot analysis, structured risk/negotiation outputs, and jurisdiction-aware cross-border context.
• Added policy-based compliance checks, contextual chat, history tracking, and secure PII/JWT handling.

Python · Telegram Bot API · GitHub Copilot SDK · AsyncIO · GitHub API · Automation

• Built an autonomous Telegram-based project builder that converts plain-language ideas into runnable codebases.
• Implemented a multi-agent generation flow with file planning, per-file code synthesis, dependency install, and validation.
• Enforced safer execution using path-restricted shell commands and sanitised token handling during git operations.

React · Node.js · MongoDB · Socket.io

• Built a full-stack platform enabling direct farmer–dealer trading.
• Implemented real-time chat and notifications using Socket.io.
• Reduced middleman dependency by 30% through direct interaction.

React · Node.js · Express.js · MongoDB · JWT · Tailwind CSS

• Built a multi-tenant task management platform with role-based access control.
• Implemented secure authentication using OTP, OAuth, and JWT.
• Managed 50+ tasks with zero unauthorized access incidents across multiple users.

React · Node.js · Express.js · MongoDB · Tailwind CSS · JWT

• Built a portfolio builder with drag-and-drop UI and real-time preview at <200ms latency.
• Developed REST APIs and implemented JWT-based authentication.
• Enabled customizable themes and one-click publishing.

┌─ NOW EXPLORING ───────────────────────────────────────────┐
│  ◈ advanced AI agents and autonomous systems               │
│  ◈ system design and scalable architectures                │
│  ◈ full-stack AI-powered applications                      │
└────────────────────────────────────────────────────────────┘

The current direction is practical intelligence: combining strong backend and system-design fundamentals with AI agents, LLM integrations, and automation systems that can solve real problems.

_{Built with intent by Gagan Deep S · Gagan-Zeus}