Senior Bubble.io Developer Needed-MVP Optimization, Backend Logic & Rwsponsive Design (NDA Reqired)

Title: Senior Bubble.io Developer Needed – MVP Optimization, Backend Logic & Responsive Design (NDA Required) (Based on milestones / escrow) Project Type: One-time project / Potential for long-term collaboration Job Description: Hello. We are looking for an experienced Senior / Strong Middle Bubble.io Developer to optimize, secure, and finalize a B2B SaaS MVP. The interactive prototype, initial relational database structure, and dark-themed wireframes have already been generated and deployed via Bubble. We need an expert to step in and level up the architecture. Key Responsibilities: 1. Advanced Backend & Math Logic: Set up precise mathematical calculations for splitting percentages/shares between multi-relational database entities with strict validation (total must always equal 100%). 2. Ironclad Security (Privacy Rules): Configure comprehensive Privacy Rules to guarantee absolute data confidentiality. Prevent unauthorized front-end or API access to user data. Protect hosted media assets from direct link scraping/downloads. 3. Flawless Mobile Responsiveness: Fully adapt the desktop layout for mobile devices using Bubble’s modern Flexbox responsive engine. No overlapping elements, no broken grids. 4. Basic SEO & Social Sharing: Configure meta tags and Open Graph (OG) tags so that platform links render beautiful preview cards when shared in messengers (Telegram, etc.). ⚠️ Core Requirement — Performance Optimization We are not looking for a messy build that lags on data heavy-loads. You must audit and build according to Bubble’s best performance practices: * Use *Option Sets* instead of heavy database queries wherever applicable. * Minimize client-side *Do a search for* constraints; enforce strict server-side filtering (*Search constraints*) so the app flies even on slower mobile connections. * Maintain a clean, unified Style Guide to speed up page rendering. How We Work: Full technical documentation, business logic, and the Bubble editor link will be provided only after an initial screening interview and signing a standard NDA. Payment will be strictly milestone-based via platform escrow. To Apply: Please share your portfolio links specifically highlighting Bubble applications where you optimized database speed or handled complex backend/math calculations.