Raul

Lead Web Developer

web.dev • Freelance

Apr 2026 - Present • 2 mos

Quontis.io I took this project from an empty repo to a live SaaS product, handling every layer of the stack along the way: - Designed the entire multi-tenant architecture — user authentication, Stripe subscription billing, webhook handling, and role-based access controls that keep each trader's data completely isolated - Integrated TradingView Advanced Charts into a real-time backtesting engine that pulls historical data from six market data providers, with intelligent fallback logic when one source goes down - Built an AI-powered trading coach that analyzes a user's actual trading patterns and provides personalized feedback — not generic advice - Created a gamification layer with XP, leveling, badges, streaks, and daily missions to help traders stay consistent with their journaling habits - Developed a rich notebook system, customizable widget dashboard, economic calendar, and a strategy playbook with pre-flight checklists so traders can hold themselves accountable - Engineered a market data warehouse that collects across 49 symbols automatically, with partitioned storage designed to stay performant as the dataset grows - Set up the full deployment pipeline — Docker builds, MySQL on Railway, GitHub Actions CI, and automated schema migrations What I work with daily: Next.js 14, TypeScript, Prisma, MySQL, Tailwind CSS, shadcn/ui, Recharts, Framer Motion, Stripe, NextAuth, Resend How I approach client work: I treat every project like my own product. That means strict TypeScript with no shortcuts, proper authentication on every route, and clean architecture that another developer can pick up without a walk-through. I care about the details because the details are what separate software that works from software that feels right. Happy to chat about your project anytime.