Senior Full Stack Engineer - Contractor (Poland Remote)

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Requirements:

• Experience building modern web applications using libraries and frameworks like React/Redux.
• Expertise with TypeScript and Node.js.
• Experience building cross-platform SDKs for shipping apps on respective app stores.
• Expertise in cloud storage, deployment, and computing, preferably with AWS.
• Ability to ship quality products efficiently, following best practices including CI/CD and automated testing.
• Strong fundamentals in Computer Science.
• Excellent problem-solving and communication skills.
• Experience building PWAs with offline capabilities, bonus if experienced with WebAssembly (WASM).

Responsibilities:

• Bring the core iOS app to cross-platforms including Web, Android, and Windows.
• Rapidly build prototypes/simulations from mockups.
• Create decoupled, interactive web/mobile UIs using JavaScript frameworks like React/Redux.
• Improve rendering performance and memory optimizations.
• Perform cross-browser/device testing and optimization.
• Maintain and support existing applications.
• Unit-test code for robustness and reliability.
• Continuously discover and evaluate new technologies.
• Ship Progressive Web Apps (PWA) using the latest technologies.