Senior full stack developer at Praktika, an AI-native language-learning company, owning the entire web stack — marketing site, onboarding funnels, customer portals, and internal tools. Day to day: architecture and development in TypeScript/React/Next.js, integrating auth and payments, building animated mobile-first UI, and driving conversion via A/B tests.
Integrate backend services, authentication providers, and payment gateways
Optimize analytics and conversion funnels
Requirements
Extensive experience with TypeScript, React, and Node.js
Proficiency with Next.js and CSS-in-JS or Tailwind
Experience integrating auth providers (Firebase, Auth0) and payment systems (Stripe, PayPal)
Strong UI/UX sensibility with a focus on animation and micro-interactions
Proven experience in A/B testing and funnel optimization
Ability to work in an async, distributed, written-first culture
Preferred Qualifications
Portfolio of high-quality web projects and conversion experiments
Prior experience at an early-stage or high-growth consumer product company
Benefits
Equity and stock options
26 days of holiday plus bank holidays
Annual company off-site
Health and wellness benefits via SafetyWing
Full AI toolkit access
$1,000 annual education and learning budget
About the Company
Praktika is an AI-native education company delivering automated tutorship experiences powered by generative AI avatars to millions of language learners worldwide.