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BlackPool25/README.md

Shreyas S Joshi

Backend Systems Engineer • Python/Java • Docker • PostgreSQL/PostGIS • Protocol Design

LinkedIn GitHub LeetCode npm Portfolio Email

🚀 Featured: QRStream — Offline Erasure-Coded Transfer

Move files from screen to screen as a QR stream — no network, no pairing. RaptorQ fountain codec (Rust via flutter_rust_bridge + ZXing-C++), CRC-32C per-frame + SHA-256 whole-file gate, continuous tile scaling, honest ~46KB/s measured via Playwright. 170 commits, 3-OS releases (Linux install.sh+RPM, Android APK stable keystore, Windows installer) — github.com/BlackPool25/QRStream

QRStream stars Release Docs

🔭 Currently Working On

  • 📡 QRStream — Offline file transfer protocol (RaptorQ + Rust FFI + ZXing-C++). Wire-compatible offline broadcast, late-join, 16MiB cap, SHA-256 gate. The flagship for protocol work.
  • 🚦 ZonePilot — Live: zonepilot-snowy.vercel.app — Spring Boot 3 fleet zone compliance engine: pgRouting directed Dijkstra on Bangalore OSM (1000× penalty, 5-attempt recursive + wait-state), PostgreSQL trigger atomic breach detection, stateful map-matching (30m snap / 50m 2-tick reroute), partitioned logs + GIST indexes, Docker Compose. 47 commits.
  • 🐳 AgentDock — BUILD & CONQUER 3.0 Winner (1st, 8hr) — Visual builder → Docker-isolated runtimes (React Flow → Docker Compose: gateway + Redis + FastAPI workers). Volume mounts + network routes isolation debugged under timer. Team: Aditya Prasad, Varnika Kirani Raghavendra.
  • 📦 packt — Content-defined chunking with exact dedup — FastCDC, BLAKE3, zstd, streaming pipeline (Rust, packt-lib crate).

🛠️ Core Stack — leveled depth (Python-first)

Proficient:   Python · Java · TypeScript · SQL — daily driver for backend & DSA
Intermediate: C++ (DSA — 257 LeetCode) · C
Familiar:     TypeScript · JavaScript · Dart — Flutter/PWA (QRStream) · Solidity
Backend:      FastAPI · Spring Boot · REST · WebSocket · BullMQ (Job Queue) · Redis · Kafka (Familiar) · PostgreSQL (pgvector/PostGIS/pgRouting) · ChromaDB · Docker · Docker Compose · GitHub Actions CI · Linux
Systems:      RaptorQ · CRC-32C/SHA-256 · pgRouting Dijkstra · event-driven async · WebSocket streaming · Flutter Rust Bridge FFI

📌 Selected Projects — backend/systems first

Project Description Stack Links
QRStream Offline RaptorQ file transfer — 170 commits, 3-OS releases, SHA-256 gate Python/Rust/Dart/TS · FFI · RaptorQ GitHub · Docs
ZonePilot Fleet zone compliance — pgRouting Dijkstra, PostgreSQL trigger breach, partitioned logs Java 25 · Spring Boot · PostGIS/pgRouting · Docker GitHub · Live
AgentDock Multi-agent orchestration → Docker-isolated runtimes — BUILD & CONQUER Winner TypeScript · Bun · Hono · BullMQ · Dockerode GitHub
packt Content-defined chunking — FastCDC/BLAKE3/zstd streaming pipeline Rust · Shell GitHub · crate
WhisperLayer Linux-native offline STT with GPU accel, global hotkeys Python · Whisper · CUDA/ROCm GitHub
PolicySattva Legal doc demystifier — LightRAG + Neo4j KG, multi-LLM FastAPI · Neo4j · LightRAG GitHub

🔧 Open Source

📊 GitHub Activity

GitHub Stats GitHub Streak

🧩 DSA & Problem Solving

LeetCode Stats 257 LeetCode (132 Easy / 118 Medium / 7 Hard) — 80.06% accept, beats 93.73% — C++ primary for DSA, Python for backend

📫 Connect

B.Tech AI/ML @ BMSIT (CGPA 9.36) · B.Sc CS @ BITS Pilani (CGPA 8.91) · Expected May 2028

Pinned Loading

  1. CredVerify CredVerify Public

    Blockchain credential verification platform — Soulbound Tokens on Polygon, gasless claiming via Web3Auth, BullMQ async issuance, IPFS storage

    TypeScript 1

  2. AgentDock AgentDock Public

    Open-source multi-agent orchestration framework with visual pipeline builder, 5+ LLM provider gateway, and Docker Compose project generation

    TypeScript 1

  3. Cognalytix Cognalytix Public

    Spring Boot 4 AI-powered self-discovery journal — local LLM analysis with Ollama/Qwen3, emotion classification via GoEmotions, async event-driven pipeline

    Java

  4. OmniLearn OmniLearn Public

    AI-powered adaptive learning workflows for OpenCode — personalized roadmaps, hands-on assignments, progress tracking. npm: omnilearn-workflow

    JavaScript

  5. PolicySattva PolicySattva Public

    Legal document demystifier — RAG-powered with LightRAG hybrid retrieval, Neo4j knowledge graphs, multi-LLM provider system

    Python

  6. ZonePilot ZonePilot Public

    Fleet zone compliance engine — pgRouting-based directed Dijkstra on OSM road network, GPS map-matching, PostgreSQL trigger-level breach detection

    Java