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A FastAPI and React application for processing sonar data and mapping underwater targets. Includes GIS-based spatial analysis, target detection algorithms, and an interactive frontend for reviewing mapped results. Delivered with a PowerShell setup script for one-command environment provisioning and built to production-ready standards with a clean handoff-ready codebase.
Stack: FastAPI · React · Python · GIS
The network for creativity
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Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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Finally Achieved the milestone of 1000$ earned on contra after leaving Fiverr a month ago.
congrats umar
🌐 3D Model Studio: Dynamic Scene Navigation & Real-Time Spatial Pins
Following up on yesterday’s virtual tour module, today I’m showcasing another core pillar of the platform I’ve built: the Interactive 3D Model Studio.
As a freelance Full Stack Developer with over 9 years of professional experience specializing in Three.js, WebGL, and React, I designed this tool to make navigating complex 3D interior architecture simple, snappy, and entirely web-based.
🛠️ What I Built & Handled in this Feature:
3D Database Initialization: Handled the heavy liftoff of initializing the 3D environment loading states smoothly in the UI.
Bi-Directional Sidebar Navigation: Built a reactive side navigation list. When a client clicks on a room listed in the sidebar (e.g., Modern Kitchen), the camera smoothly travels to that point.
Camera Rig Controller: Developed a multi-perspective controller allowing users to orbit freely or swap instantly between structured camera presets (Top View, Left, Right, Front, Back).
Smooth Camera Transitions: Wrote custom transition math using Three.js to ensure the camera glides seamlessly without causing motion sickness.
If you are looking to build interactive spatial tools, high-performing 3D configurators, or customized web editors, let's connect!
💼 Hire Me on Contra
I work closely with startups and established brands to design and develop custom, cutting-edge 3D web products.
💬 Or hit "Message" right here on my Contra profile to discuss your project scope directly!
Good job Pro
A client wanted one API style for the whole product. I talked them out of it first.
tRPC gives my Next.js frontend end-to-end types, zero schema drift. The moment a partner integrates, REST is all they can use without my SDK. GraphQL fits when one screen pulls from three backends.
Which one wins where, from a live B2B build: https://www.duskolicanin.com/blog/trpc-vs-rest-vs-graphql-b2b-saas-2026
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