Project Title Server-Based BIM + GPS Map → AR Visualization Platform (Navisworks, Multi-User) Project Overview We are looking for an experienced developer or small team to build a server-based BIM visualization platform with GPS-based map navigation and AR 3D visualization. The system must allow users to: Navigate a project on a map by GPS coordinates (similar to Google Earth / GIS view) Select a location or area on the map Seamlessly switch to 3D visualization / AR view of the same location using a smartphone camera This is an industrial project (gas processing plant) using a large Navisworks NWD model (~1 GB). Critical requirement: The BIM model must NOT be downloaded to phones. All heavy processing and rendering must be done on a server. Core Functional Requirements 1. GPS / Map-Based Navigation (2D) Web-based map interface (Google Maps / Mapbox / Cesium / similar) Display project layout aligned to real-world GPS coordinates Ability to: zoom / pan select zones or points see project elements overlaid on the map Map view acts as entry point to 3D/AR visualization 2. 3D / AR Visualization Live camera view on smartphone 3D BIM model overlaid on real environment Transition from map → 3D must keep same coordinates Target alignment accuracy: ~10 cm Calibration via: survey control points / RTK (preferred) markers acceptable for initial phase 3. Architecture (Mandatory) Server-side rendering WebRTC / Pixel Streaming or equivalent Browser-based client (no app install preferred) One server → many users Client side: camera sensors basic UI only 4. Multi-User Target: ~20 concurrent users Session isolation Stable performance 5. Model Handling Input: Navisworks NWD Geometry optimization: remove micro-details LOD generation segmentation by zones Optimized for real-time rendering 6. Security BIM data stored only on server No file download on client Token / session-based access Project Structure (Important) We expect the project to be executed in phases, starting with a small pilot, then scaling up. Phase 1 – Pilot One selected zone Basic map → 3D transition Server rendering proof Test on 2–3 phones Phase 2 – Full System Full model Multi-user Production-ready deployment Time & Budget Hours: Open (to be proposed by freelancer) Budget: Open (hourly or milestone-based) We will evaluate proposals based on: technical understanding architecture decisions efficiency (not just price) Required Experience We prefer developers with experience in at least two of the following: BIM / Navisworks / IFC Unity or Unreal Engine WebRTC / Pixel Streaming GIS / GPS / Map-based systems ARCore / ARKit Server-side GPU rendering This project is suitable for experienced Indian developers or teams with strong technical background and cost-effective delivery. No mobile-only AR No “download BIM to phone” solutions No generic AR demos To Apply (Mandatory) Please include: Brief explanation of how you would implement: GPS map navigation transition to 3D / AR Proposed tech stack Relevant past project (link / video / description) Estimated hours for Phase 1 (Pilot) Confirmation that rendering will be server-side Proposals without these points will not be considered. Long-Term Opportunity This is not a one-off demo. Successful delivery may lead to: long-term cooperation additional industrial projects scaling the platform further