"Learning is a journey, certainty slows you down, Doubt keeps you moving."
I build high-performance, secure, and scalable systems — from bare metal to serverless. Creator of the deez-in open-source organization and the DeezChatz end-to-end encrypted messaging platform.
🌐 Portfolio: debarkamondal.com · 📦 Org: github.com/deez-in · 💬 Platform: chatz.deez.in
- Systems & Backend: Rust (Axum, Tokio, Distributed Systems, Protocol Design, MQTT, Zero-Copy), Node.js, Event-Driven Architectures.
- Mobile & Frontend: React Native, Expo, TypeScript, Astro, Next.js, Svelte, Tailwind CSS.
- Cryptography & Security: Signal Protocol (X3DH, Double Ratchet), AEAD, VXEdDSA, Cross-Platform FFI (C / Swift / JNI).
- Infrastructure & Tooling: Docker & Context Optimization, Linux CI/CD Pipelines, Ansible, Cloudflare Pages/Workers, AWS.
Creator and maintainer of the Deez Ecosystem — a privacy-first, end-to-end encrypted communication suite spanning systems-level Rust backends, cryptographic protocol implementations, and high-performance native Expo mobile modules.
| Project | Role | Tech Stack | Description |
|---|---|---|---|
| DeezChatz Mobile | Creator | React Native, Expo, TS, E2EE | Cross-platform E2EE messaging app powered by Signal Protocol. |
| DeezChatz API | Creator | Rust, Axum, Redis, MQTT | High-throughput backend handling key exchange, sessions, and real-time routing. |
| libsignal-dezire | Creator | Rust, Cryptography, FFI | Pure-Rust Signal Protocol implementation engineered for performance and FFI. |
| deezchatz-sdk-rust | Creator | Rust, Tokio, MQTT | Async client SDK encapsulating Signal ratchets, VXEdDSA REST auth, and MQTT. |
| deezchatz-cli | Creator | Rust, Ratatui, SQLCipher | Terminal-native client featuring Ratatui TUI and encrypted SQLite storage. |
| expo-audio-opus | Creator | Rust, Swift, Kotlin, Audio | Native Expo module for bidirectional PCM/Opus encoding and Ogg audio playback. |
| expo-native-mqtt | Creator | Kotlin, Swift, Expo, MQTT | High-performance native MQTT client bindings wrapping HiveMQ & CocoaMQTT. |
Selected pull requests to infrastructure, codecs, and distributed systems:
- stephenberry/opus-pure (PR #3): Eliminated hot-path heap allocations on decode/analysis paths via
Cow<'a, [u8]>and scratch buffers, bounded Ogg packet reassembly to 16 MiB against DoS, and hardened ARM NEON SIMD dispatch. - rmqtt/rmqtt (PR #381): Reduced Docker build context by 99% (from 11.4 GB down to 119.5 MB) via targeted
.dockerignorerules, resolved Linux CI dependencies, and fixed compilation warnings in subscription matching logic. - rmqtt/rmqtt (PR #372): Implemented core
offline_messageevent lifecycle support for the WebHook plugin, enabling webhook listeners to process real-time events for offline MQTT clients. - Lidarr/Lidarr (PR #5750): Implemented customizable indexer search pattern schemas in C#/.NET for dynamic criteria handling.
I thrive in high-growth, technically ambitious environments where I can own the full stack. My approach combines the rigor and performance of systems engineering (Rust, cryptography, distributed networks) with the velocity of modern product development (React Native, TypeScript, Astro), ensuring products are not just functional, but resilient, secure, and performant at scale.
- Website: debarkamondal.com
- GitHub: @debarkamondal
- Organization: @deez-in
- LinkedIn: linkedin.com/in/debarkamondal
- X (Twitter): @debarkamondal
- Email: debarkamondal@gmail.com