Full-Stack Web Developer (TypeScript)
Skills
About the role
Feenko, a personal finance app backed by Visa, is hiring a full-stack engineer to own its conversion funnel, admin panel, and support site. This remote position is suited for developers with three or more years of TypeScript experience who are comfortable making independent technical decisions.
What you’ll do
- Implement A/B experiments across landing pages, quizzes, paywalls, and checkout flows from Figma specs with correct bucketing and clean tracking.
- Manage Stripe and Solidgate integrations for checkout, subscriptions, webhooks, and upsells.
- Develop the internal admin panel and maintain the support site covering forms, CSAT surveys, and an upcoming knowledge base.
- Diagnose production issues using Amplitude, Sentry, logs, and databases to resolve root causes.
- Proactively improve code quality, performance, and delivery speed.
What they’re looking for
- Three or more years of commercial full-stack development with TypeScript.
- Strong hands-on experience with a modern SSR framework such as Astro or Next.js.
- Production-level work with payment platforms including checkout, subscriptions, webhooks, idempotency, and edge cases.
- Familiarity with web-to-app funnels, quiz funnels, and subscription products featuring paywalls and trials.
- Experience deploying to serverless environments like Vercel and managing PostgreSQL databases.
- Knowledge of A/B testing infrastructure covering consistent bucketing, absence of flickering, and clean event tracking.
- Independent full-stack debugging capability and a habit of testing before shipping.
- Intermediate or higher proficiency in English.
Nice to have
- Tracking and attribution: Meta and TikTok pixels, server-side events, AppsFlyer, OneLink, and deep links.
- Experimentation platforms such as GrowthBook or Statsig.
- User-level debugging with Amplitude, pixel-perfect Figma implementation, and Tailwind CSS.
- Background in fast-growing startups or lean, high-velocity teams.
What’s on offer
- Remote work
Questions about this role
Is this position fully remote?
Yes, the role is fully remote.
How much experience is required?
At least three years of commercial full-stack development with TypeScript.
What salary does this role offer?
The posting does not disclose salary information.
Which technologies power the web stack?
TypeScript, Astro, Tailwind CSS, Zod, Vercel, Neon PostgreSQL, Stripe, Solidgate, GrowthBook, Amplitude, Sentry, and Vitest.
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