Anthony S.

Web App Developer | Full Stack SaaS MVP | Claude Code Developer

Web App Developer building production web applications for B2B companies. Full stack web apps, SaaS platforms, client portals and MVPs that ship as working software, not slide decks. Senior full stack web app developer and Claude Code developer. React / Next.js, Node, TypeScript, Python / FastAPI, Supabase / PostgreSQL, AWS. 141 projects, 100% Job Success, Top Rated Plus, $300K+ earned. Most companies do not need "an AI project." They need a web app that is fast, responsive, secure and maintainable, with AI layered in only where it earns its place. WHAT I BUILD AS A WEB APP DEVELOPER ▪ Custom web app development: React/Next.js, Node, TypeScript, Python/FastAPI, PostgreSQL, Supabase, AWS, Docker ▪ Full stack SaaS and MVP development: multi-tenant architecture, user authentication, role-based access, Stripe billing, admin panels, analytics dashboards, client portals, internal tools ▪ Web app design and UI/UX: responsive, mobile-first web application design from wireframe to production. The UI/UX work and the front-end build handled by one person, so nothing is lost in handoff ▪ Progressive web apps: installable, offline-capable PWAs that feel native without an app-store release ▪ Web app performance: Core Web Vitals, page speed, query and render performance, scaling an app that outgrew its first build ▪ Web application modernization: rebuilding no-code, page-builder and legacy builds as real React/Next.js web applications ▪ API development and integrations: REST APIs, webhooks, Stripe, CRM sync, third-party services CLAUDE CODE DEVELOPER WORK Claude Code is my primary build environment, not a demo I ran once. As a Claude Code developer I ship RAG over your own data, LLM features inside a real product, AI agents running in production, MCP server integrations, and Claude and OpenAI APIs wired into web apps that already have users. Every build runs through review gates that cannot be skipped, so you get tested, reviewed, maintainable code rather than generated output nobody read. TWO WAYS TO ENGAGE → Full stack SaaS or MVP build. You know what you want. A SaaS dashboard, a multi-tenant platform, a customer portal, an internal tool, a PWA. I architect it and ship it production-grade, with tests, documentation and code your team can own. Most MVPs ship in weeks, not quarters. → Clarity Audit, discovery first. Not sure where to start? I assess your product, data and workflows, then hand back a prioritized roadmap: realistic timelines, cost ranges, and the two or three highest-impact things to build first. HOW I WORK AI-accelerated, human-led. Every web application ships with tests, documentation and code a senior engineer would sign off on. Clients who have been burned by no-code or page-builder builds hire me to rebuild them properly as production web apps. WHERE I HAVE DELIVERED 141 projects across EdTech, Pharma, Real Estate, Logistics, Financial Services and CRM platforms. Membership portals with gated analytics, multi-portal web apps with role-based access, subscription platforms with mobile-to-web data sync, two-sided marketplaces with advanced search, B2B customer portals with order tracking, and multi-tenant SaaS. Based in Clearwater, Florida. US-based, native English, overlapping hours with US and EU teams. Send a message with your goal. On a 30-minute call I will tell you whether you need a web app developer for a fixed-scope build, a Claude Code developer for an AI feature, or a Clarity Audit first.