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Real-time collaborative estimation tool for agile teams. Built with a TypeScript/Node.js and Go WebSocket server cluster, with Redis pub/sub adapter for seamless multi-instance synchronization. Deployed on Kubernetes with horizontal scaling, supporting instant session coordination, active room management, and secure room auth.
A Monte Carlo retirement simulator that runs thousands of randomized asset-return and inflation paths through custom, age-based equity allocation glidepaths. Features a vectorized NumPy simulation engine (Python) exposed via a FastAPI endpoint, with an interactive React + Recharts frontend showing success statistics, wealth fan bands, and terminal wealth distributions.
A web-native 3D voxel modeling workspace built with React, Three.js, and React Three Fiber. Allows interactive voxel drawing, painting, erasing, and layer-based scene organization in the browser. Powered by @kjaniec-dev/ui and @kjaniec-dev/design visual components and theme configurations, deployed to Netlify via Vite.
A comprehensive, production-ready admin dashboard template with a minimalist greyscale design. Covers 27 feature domains including CRM, finance, inventory, marketing, and security — all built with React 19, Material UI v9, and Vite 7. Fully open source and ready to use as a starting point for your next internal tool or admin panel.
An interactive 3D resume disguised as a browser-based game. Explore a sprawling cyberpunk city rendered entirely from voxels, discovering skill boxes that represent technical expertise. Features custom voxel engine with greedy meshing, procedural city generation, dynamic lighting effects, and chunk-based streaming for smooth 60 FPS performance.
