Fullstack Engineer
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Job Location:
Monthly Salary:
Posted on:
4 hours ago
Vacancies:
1 Vacancy
Job Summary
Our client a new Silicon Valley based profitable B2C product startup building innovative mobile solutions for the planet is now looking for a talented and experienced Fullstack Engineer.
Location: Europe
Type: Remote Full-time
Start date: ASAP
About Company:
Headquartered in Silicon Valley the company boasts a leadership and investor team with former executives from Rakuten and Dropbox. Its flagship product a VPN service is a leading solution downloaded more than 100M times a year ensuring online privacy and anonymity for users by creating a private network from a public internet connection. Its eSIM brand provides seamless global connectivity for travelers and digital nomads.
The company operates fully remotely with a strong presence in Singapore Hong Kong Poland and Ukraine.
About Project:
Its a modern subscription-based VPN service platform serving users across multiple platforms (iOS Android Windows macOS). The web application handles user authentication subscription management payment processing and integrates with various third-party services. The platform supports 15 languages and serves a global user base.
Responsibilities:
- Build & maintain full-stack features across our application
- Develop API endpoints for mobile clients (iOS Android Windows macOS)
- Integrate payment systems (Recurly App Store Google Play)
- Write clean type-safe code with TypeScript
- Implement i18n for new features across 15 locales
- Write and maintain E2E tests with Playwright
- Optimize performance for global users with varying network conditions
- Collaborate with mobile teams on API contracts and data synchronization
- Monitor & debug production issues using Datadog and ClickHouse analytics
Requirements:
- 3 years of experience with React and experience with (App Router preferred)
- Experience with REST API design and implementation
- Familiarity with payment/subscription systems (Stripe Recurly or similar)
- Experience with SQL databases and analytics tools
- Understanding of authentication & authorization (JWT sessions)
- Good knowledge of CSS/Tailwind for responsive UI development
- Experience writing automated tests (unit integration or E2E)
Nice to Have:
Experience with GraphQL / Hasura
Familiarity with Cloudflare Workers or edge computing
Experience with ClickHouse or similar OLAP databases
Knowledge of App Store / Google Play in-app purchase flows
- Experience with SendGrid or other email service providers
- Familiarity with i18n best practices for global applications
- Experience with Playwright or similar E2E testing frameworks
Why Join:
- Work on a product used by millions of users worldwide
- Modern tech stack with the latest versions of React and TypeScript
- Opportunity to work on cross-platform integrations (web iOS Android desktop)
- Exposure to payment systems analytics pipelines and global infrastructure
- Collaborative environment with mobile and backend teams
