Ciklum is looking for a Senior JavaScript Engineer to join a cross-functional Design Systems team. You will own high-impact workstreams and turn product needs into reusable components for a global consumer review platform, enabling teams to move faster and more consistently.
What You'll Do
- Take end-to-end ownership of complex system features such as Data Visualization suites, theme engines, or complex search and filtering patterns.
- Build for flexibility and reusability, ensuring features solve problems for multiple product teams without creating maintenance bottlenecks.
- Work in close partnership with UX designers to bridge the gap between Figma and code, ensuring technical feasibility during design reviews.
- Act as the dedicated technical point of contact for product areas to identify patterns for integration into the core library.
- Own the accessibility (A11y) for your features, ensuring components meet WCAG 2.1/2.2 standards.
- Manage the lifecycle of features within a versioned code library, ensuring safe releases and clear migration paths.
- Produce clear, comprehensive technical documentation for stakeholders, engineers, and AI agents.
- Participate in code reviews and RFCs, providing constructive feedback to help other engineers grow.
What We're Looking For
- Advanced, hands-on proficiency with React, TypeScript, and CSS.
- 5+ years of professional experience in frontend web development.
- Proven experience building scalable libraries, shared infrastructure, or modular UI components.
- Strong understanding of building accessible interfaces and applying WCAG standards.
- Ability to take vague requests, break them down into manageable tracks, and deliver at a steady, predictable pace.
- Upper-intermediate or higher level of spoken and written English.
Nice to Have
- Proven experience contributing to a professional Design System or a major open-source project.
- Experience with Next.js, CSS Modules, SASS, or Styled Components.
- Familiarity with end-to-end testing frameworks like Playwright.
- Understanding of AWS cloud infrastructure or CI/CD practices.
- Exposure to Node.js, MongoDB.
Technical Stack
- React, TypeScript, CSS
- Next.js, CSS Modules, SASS, Styled Components
- Playwright
- AWS, Node.js, MongoDB
Team & Environment
You will join a Design Systems team with other Senior Engineers as part of a cross-functional development structure.
Benefits & Compensation
- Work alongside top professionals in a friendly, open-door environment.
- Take on large-scale projects with a global impact.
- Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications.
- Explore diverse domains through internal mobility.
- Full remote working possibilities.
- Company-paid medical insurance, mental health support, and financial & legal consultations.
Work Mode
This is a local-country position based in Poland.
Ciklum fosters a One Team culture that values collaboration, progress, exploring innovations, and engineering solutions that matter.






