Frontend Engineer - Mid - Senior - React - Saily
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Nord-security · Vilnius, LithuaniaPrepare for this interview
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At Saily, we're removing the hassle of staying connected while traveling - no roaming fees, no plastic SIM cards, just lightning-fast, secure mobile data in 200+ destinations. Saily has millions of paying customers and hundreds of thousands travelers browsing through Saily at any given moment. To build the best product for our customers we foster AI-native Product Engineering culture , where: The Engineer is the builder, who is responsible for solving customer problems end-to-end (idea to production) AI Agents are the enablers who write most of the code and solve repeatable tasks to help the Engineers maximize their impact Everyone contributes to making Saily effective by suggesting new areas for improvement to delegate to agents and then implementing the changes Curiosity, learning and sharing are everyone's responsibility Customer, having a comfortable, connected, hassle-free journey is never lost from the focus We value growth over comfort, contribution over hierarchy, and impact over process. At Saily, we believe in giving sharp people context, autonomy, and AI as their multiplier to allow them to just do their best work. Main Responsibilities Build a framework to support blazing-fast web pages - think of sub-second loading times. Create features to support layers of multi-dimensional personalization, A/B experimentation, and analytics via CloudFlare Workers and your custom-built platforms. Develop and maintain a high-quality code base. Seek to improve web performance constantly. Mentor colleagues on web development best practices & provide technical guidance. Core Requirements Proven development experience working with JavaScript and TypeScript (4+ years). Experience with React framework. Deep knowledge of web development, testing, and performance optimization best practices. Proven experience in developing high-quality, high-performance front-end web applications that run at scale. Team spirit, proactivity, and ability to work in a fast-paced environment. Bonus Points For Full-stack experience. Please keep in mind that this position requires office attendance 3 times a week! Tools You Will Use Frontend: Next.js, React.js, TypeScript, GraphQL, Tailwind CSS, Cloudflare Workers Backend: Go, MySQL, Kafka, Docker, Kubernetes, AWS, Redis IOS: SwiftUI, Xcode, Combine, SPM, MVVM Architecture Android: Kotlin, Android Studio, Hilt, Coroutines, Jetpack Compose, MVVM Architecture AI tools: Claude Code, OpenAI Codex, OpenCode, Cursor with Composer
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