React / TypeScript developer needed

We’re a fast-growing fitness app brand in the USA, looking for a developer to help us build, improve, and maintain our quiz funnel and checkout page. The funnel is a key part of our customer journey, so we need someone who can move fast, write clean code, and create a smooth experience from quiz start to checkout. The opportunity ▪ Join a small, young, ambitious team — 100% remote ▪ Flexible hours, as long as deadlines are met ▪ Ongoing work with long-term collaboration potential ▪ Work on a funnel that directly impacts growth and revenue This is a flexible part-time role depending on workload, with potential for long-term collaboration. What you’ll do ▪ Work with React, TypeScript, Firebase, and Google Cloud ▪ Connect quiz answers, user data, and funnel logic ▪ Improve frontend loading speed, and reliability ▪ Help maintain clean structure and scalable code ▪ Support testing and fast iterations based on performance feedback ▪ Help with Stripe and Posthog analytics integrations where needed Who you are ▪ Experience with React + TypeScript ▪ Experience using AI coding tools (Claude, Codex etc.) ▪ Comfortable working with Firebase / Firestore ▪ Able to build clean, reliable, production-ready features ▪ Good understanding of funnels, user journeys, and conversion-focused UX ▪ Fast, organized, and detail-oriented ▪ Comfortable working independently ▪ Good communication in English ▪ Bonus: experience with Stripe, analytics tracking, Meta/TikTok pixels, Posthog, or similar tools Tools you’ll use ▪ React ▪ TypeScript ▪ Firebase / Firestore ▪ Google Cloud ▪ Stripe ▪ Analytics tools / tracking integrations What to do next Send a short intro, links to 2–3 relevant projects, and a quick note on your workflow and experience with React, TypeScript, Firebase, Stripe, or analytics integrations.