Senior Software Engineer, Frontend (Poland Remote)

View full description

Requirements:

• 6+ years of professional experience in frontend development, with at least 2 years working on web components and React projects and building micro-frontends.
• Demonstrated experience in building and maintaining reusable component libraries or design systems used across multiple projects.
• Strong expertise in web components development using Stencil.js or similar frameworks.
• Advanced knowledge of React and experience building reusable, high-performance components.
• Deep understanding of TypeScript, including advanced types, generics, and best practices for scalable codebases.
• Extensive experience with HTML5, CSS3, and modern JavaScript (ES6+).
• Familiarity with CSS-in-JS libraries and best practices for managing styles
• Experience with unit testing, integration testing, and frameworks like Jest, React Testing Library, or similar tools.
• Strong debugging skills for browser-based issues and performance optimizations.
• Knowledge of frontend performance best practices, including rendering optimization, lazy loading, and asset management.
• Experience with modern build tools like Webpack, Rollup, or Vite.
• Proficiency with version control systems like Git.
• Familiarity with creating or maintaining design systems and component libraries.
• Understanding of accessibility standards (e.g., WCAG) and responsive design principles.
• Proven experience collaborating effectively with designers, product managers, and backend teams across geographically distributed time zones, including Europe and the USA, to deliver seamless and cohesive user experiences.
• Strong communication skills to articulate technical concepts and collaborate effectively.
• Hands-on experience writing comprehensive test cases to ensure code quality and reliability.
• Familiarity with integrating frontend builds into CI/CD pipelines.

Responsibilities:

• Design, develop, and maintain highly efficient, reusable, and scalable web components using Stencil.js, TypeScript, and React.
• Build modular and reusable UI components to ensure consistency and maintainability across projects.
• Establish and enforce best practices for component design, including accessibility (WCAG compliance), performance optimization, and responsive design.
• Collaborate with the team to define the architecture of the design system or reusable component library.
• Ensure seamless integration of web components into various applications, particularly within React projects.
• Work closely with backend engineers to design APIs that enable efficient data flow and interaction with frontend components.
• Write clean, maintainable, and well-documented code, adhering to modern standards and practices.
• Perform regular code reviews and ensure adherence to best practices and coding standards.
• Create robust unit and integration tests for web components.
• Debug and resolve performance bottlenecks and other frontend issues.
• Work closely with designers and product managers to understand requirements and provide technical insights during the planning phase.
• Mentor junior frontend engineers, sharing knowledge on web components, Stencil.js, TypeScript, and React.
• Continuously improve the performance of web components, ensuring compatibility with various browsers and platforms.
• Optimize assets and rendering pipelines for faster load times and better user experience.
• Create comprehensive documentation for the developed reusable components, including usage guidelines and examples.
• Provide technical support to teams integrating the components into their projects.
• Stay up-to-date with emerging frontend technologies, particularly in web components and frameworks like Stencil.js and React.
• Proactively suggest improvements to existing tooling, frameworks, or processes to enhance team efficiency and product quality.
• Collaborate with DevOps to streamline CI/CD processes for frontend builds and deployments.
• Ensure smooth handoff of frontend deliverables to QA and collaborate on addressing issues during testing.