Harsha B's Work | ContraWork by Harsha B
Harsha  B
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Harsha B

Full-Stack developer with proven track record

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Cover image for I made roule.io, A multiplayer
I made roule.io, A multiplayer board game with around 80,000 lines of code. From design to deployment, everything is done by me
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Cover image for Built a high-performance PDF system
Built a high-performance PDF system enabling precise interaction, annotation, and digital signing—solving limitations of traditional PDF tools. Engineered a custom PDF viewer with accurate rendering, text extraction, and coordinate-based annotations Integrated an infinite canvas (Excalidraw-style) for real-time drawing and collaboration over documents Ensured pixel-perfect state persistence with optimized state management Designed async processing pipelines using RabbitMQ for file conversions and scalability Implemented fine-grained annotation tools and secure signature workflows Stack: React, TypeScript, custom canvas engine, PDF processing libraries, RabbitMQ
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Cover image for BrokenGPT is an AI chat
BrokenGPT is an AI chat system focused on character-based conversations that actually stay consistent. You can create and talk to any kind of character—whether it’s a fictional persona, a professional assistant, or a task-focused agent—and it will remember past interactions and behave accordingly. ✨ What It Does Create any character you want Build fictional characters, real-world style personas, assistants, or custom agents with specific roles and behavior Consistent personality Characters don’t randomly change tone—they stay true to how they’re defined Remembers conversations You can leave and come back later, and the character still remembers you and your context Feels natural to talk to Conversations flow like ongoing chats, not one-off prompts 🛠 Tech Stack AWS Bedrock (Mistral) Python + FastAPI React
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Cover image for Skillrizz is a LeetCode-style technical
Skillrizz is a LeetCode-style technical interview prep platform with a growing user base, built as a robust full-stack system with a focus on high-performance backend engineering and secure code execution. It features a dedicated online judge for evaluating submissions, a curated problem dashboard categorized by top companies like Google, Meta, and Amazon, and a subscription model with Plus and Pro tiers. The backend is developed in Go using frameworks like Fiber or Gin for high concurrency, with PostgreSQL handling user and problem data, while Docker ensures scalable containerized deployment.
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Cover image for LinkNest is a productivity-focused browser
LinkNest is a productivity-focused browser extension that acts as an intelligent workspace and high-performance moodboard for researchers, developers, and creatives. Unlike static bookmarking tools, it captures and categorizes web content in real time with automated screenshots and metadata extraction, organizing links, images, and snippets into visual boards for efficient research management. It supports seamless cross-device synchronization via secure OAuth2, ensuring instant access to saved content across environments. Built with React for a fast browser UI and powered by a Flask backend for data processing and authentication, it integrates Chrome APIs for tab management and automated capture while maintaining strong security through token-based session management.
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Cover image for KinoLog is a social media
KinoLog is a social media platform for film enthusiasts, inspired by Letterboxd but built with a stronger social-first focus. It allows users to track, rate, and discuss movies while emphasizing interaction and community engagement. Leveraging your experience with real-time features, KinoLog aims to go beyond a basic tracker by creating a more dynamic and interactive space for movie lovers by recommendations and fan communities.
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