Hi there, I'm Harshit Soni (aka Felix-au) 👋

(He/Him)

I am a Systems Programmer, AI Engineer, and Full-Stack Developer passionate about building highly polished, performance-oriented Windows desktop utilities, deep-learning models, and responsive web systems. I specialize in offline-first architectures, local AI deployment, and constraint-based algorithms.

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📁 Featured Creations

🤖 Local AI & Intelligent Systems

🦅 GriffinX: Your Local AI Assistant Voice-controlled Windows desktop assistant running entirely offline. Features: Push-to-talk hotkeys, window processes manager, neural speech responses, interaction logging. Tech Stack: Python, PySide6 (Qt), Faster-Whisper (STT), llama.cpp (Qwen3-4B-GGUF), Piper Neural TTS, SQLite. Highlights: CPU-first by design (runs on low-end hardware, supports GPU offload), built-in intent cache with SequenceMatcher to execute repeated commands instantly.

🧠 JanGinti: Crowd Density Estimation Deep-learning-powered crowd estimation system countering Western data bias. Features: High-accuracy density estimation + interactive canvas-based crowd flow simulator. Tech Stack: CSRNet (PyTorch), FastAPI, Vite + Canvas, Google Colab (T4 training). Highlights: Outperforms original CSRNet paper benchmarks on ShanghaiTech (Part A: 63.31 vs 68.2 MAE | Part B: 8.37 vs 10.6 MAE) by fine-tuning on a custom-curated Indian crowd dataset (Part C).

💬 CodeMate: Your Coding Companion AI-powered code debugger & explainer listening directly to your clipboard. Features: Float-on-top interactive widget, instant clipboard trigger, QLoRA fine-tuned explanation. Tech Stack: Python, PySide6, Jupyter Notebook, Qwen2.5-Coder-1.5B (local fine-tuned), Gemini Flash API fallback.

🖱️ Mouse Remapper Utility to remap up to 5 mouse buttons to keyboard keys with repeat modes. Features: Toggle-repeat, modifiers, custom presets, lightweight background daemon. Tech Stack: Qt (QML + C++).

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🖥️ Windows Utilities & Systems Development

🖥️ DeskX: Wallpaper Engine Interactive desktop wallpaper manager supporting multi-monitor configurations. Features: Set images, GIFs, videos, and live HTML pages as active wallpapers; 3-layer widget overlays, drag-and-drop widget arrangement, click-through toggles. Tech Stack: JavaScript (Electron), HTML/CSS, Win32 Koffi FFI (Z-order/Z-index control).

🎛️ Sonixx High-performance virtual audio router and mixer for Windows. Features: Captures individual application audio channels and physical microphones, mixes them, and routes output to virtual devices. Tech Stack: Python, PySide6, WASAPI, Pycaw (Windows Core Audio API wrapper).

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🌐 Full-Stack & Algorithmic Applications

🏡 Sahara Homestay: Premium Living Reimagined Modern, glassmorphic client portal and real-time CMS dashboard. Features: Interactive room configurations, booking logs, image uploader (ImgBB integration), WhatsApp pre-filled bookings, rolling testimonials. Tech Stack: React (Vite), Node.js + Express, MongoDB Atlas, Tailwind CSS + Framer Motion.	📅 University Class Scheduler Constraint-aware academic timetabling tool. Features: Solves room, faculty, section, and course collisions in < 5 seconds; offline-first design. Tech Stack: React 19, Vite 8, Greedy Constraint Satisfaction (CSP) algorithm.
📐 NFA to DFA Visualizer Step-by-step automata conversion visualizer. Features: Interactive nodes/transitions, subset construction walkthrough, animated graph canvas. Tech Stack: Vite, HTML Canvas, JavaScript.	🎬 flix-app A movie streaming website with a Netflix-inspired theme. Features: Dynamic video listing, dark theme, interactive media players. Tech Stack: Node.js, Express, EJS, CSS.

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🛠️ Skills & Toolkit

💻 Languages & Frameworks

🤖 AI, Deep Learning & Systems

• Local Inference Engines: llama.cpp (GGUF model load/execution), Faster-Whisper (STT), Piper TTS (ONNX Neural Speech)
• Windows Core & FFI: WASAPI (virtual routing), Win32 Koffi FFI (Window layout layers, click-through hook)
• Algorithms: Constraint Satisfaction Problem (Greedy CSP solvers), Automata subset constructions, Graph visualizer rendering.

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📊 GitHub Analytics

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📬 Connect with Me

• Email: harshit.soni.23cse@bmu.edu.in
• GitHub: github.com/Felix-au