TL;DR:We are Yumzi. We are building the smartest menu-management system for restaurants globally.Think 'Canva', but driven by AI conversation. We are bootstrapped, fast, and allergic to corporate stiffness.The Role: We need an architect, not just a UI builder. We have enough people who can make things look pretty. We need someone who can handle the logic, the data flow, and the AI agents running in the background. You will still touch the Frontend (Next.js), but your heart should beat for structure and performance.You are a fit if: You speak fluent English: Our company language is English. No German required. You live on 'X' (Twitter): You know about the latest LLM releases 5 minutes after they drop. You are obsessed with the fast-paced AI world. You hate 'Lazy Code': We use TypeScript. We hate the any type. You take pride in clean, strict, and scalable architecture (Next.js / NestJS). You are an 'Ownership Monster': You see a bug? You fix it. You have an idea? You prototype it. No hand-holding provided. Logic > Pixels: You prefer designing a clean API response or optimizing a database query over tweaking CSS animations for 3 hours. You are unfiltered: We have a dark sense of humor and speak openly. We don't do corporate politics and we don't walk on eggshells. We focus on results, not on looking busy. Our Tech Stack: Backend (Primary): Node.js (NestJS & Express). AI: Deep integration of LLMs (Gemini, Grok) – building real agents. Database: MongoDB, Firebase. Frontend: Next.js, React, TypeScript. The Deal: Salary: 17€ - 27€ EUR / hour (B2B Contract) – based on your skill & impact. Location: 100% Remote (Work from anywhere, just deliver). Freedom: Flexible hours. We don't care when you work, as long as you ship. How to apply:We don't care about your CV formatting. We care about your code and your vibe.1. Drop a link to your GitHub or a project you built. (Required. No code = No answer).2. Tell us briefly what you are currently learning or obsessing over in Tech/AI.