Romain J.

I build interactive 3D and AR demos of industrial equipment too big, too heavy, or impossible to bring to a trade show or a sales meeting. I also build the automation and AI integrations behind operations: self-hosted n8n systems, AI agents, and MCP servers that make software products usable from Claude and ChatGPT. Two service lines, one engineer, details below. INTERACTIVE 3D & AR PRODUCT DEMOS Tablet AR at 1:1 scale or as a tabletop miniature: animated cycles, exploded views, tappable spec points (throughput, footprint, safety zones). A WebAR link behind a QR code: prospects scan your brochure or booth graphic and keep the demo on their own phone after the show. A 60-90 second film for your site, LinkedIn and sales decks. Optional: an AI voice guide that answers spec questions out loud, and a real-time option configurator. Built from your CAD (STEP/IGES) or from photos. Delivered in days at a fixed price, not the 10-16 weeks agencies quote. Background: 10 years of real-time 3D and AR. AR guidance and tour applications. Industrial and commercial work since 2020: a multi-meter AR-tracked scale model used to plan a port complex for a Saudi construction client, AR-assisted engine maintenance for Peugeot, AR real estate showrooms. Founder of JTech (Lyon, France); my 3D history channel on YouTube has passed 300,000 views, with one documentary at 190,000. It is my production lab, from LiDAR terrain to final render, and public proof of the finish level I deliver. AI AUTOMATION & MCP Most automations break quietly: no retry, no alert, and nobody notices until a week of leads has vanished. I build the other kind, and I run my own business on it: a B2B outbound pipeline with multi-source verification and LLM scoring, the content pipeline feeding the channel above, and an algorithmic trading system where silent failure costs real money. MCP servers: your SaaS usable from Claude, ChatGPT and AI agents. Production auth, tool schemas an agent can read without guessing, tests, docs. Zapier or Make to self-hosted n8n: same workflows on your infrastructure; most clients replace $200-400/month in subscriptions with a $20 VPS. Lead intake and routing, client reporting, document processing with guardrails. STACK: Unity (AR Foundation, URP, Cinemachine), C#, Blender, Python, JavaScript, n8n, Make, Zapier, REST and GraphQL APIs, OpenAI and Anthropic APIs, Docker, Postgres. HOW I WORK Fixed price with a written scope and a deposit at signature, or hourly for ongoing work. You own the source files, the infrastructure and the credentials. Refresh packages for trade show clients; maintenance retainers for automation. Tell me what you sell and where you're showing it next, or which process is eating your team's hours. I'll answer in one message with an honest cost and timeline.