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Calyptus

Frontend Engineer

Calyptus
Netherlands · Full-time · Mid-Senior

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Core Responsibilities

  • Act as a self-starter and take ownership as the first frontend engineer in Europe, setting the foundation for future growth.
  • Design and develop responsive, high-performance user interfaces using React JS and related technologies.
  • Integrate AI-powered personalization and recommendations into the frontend experience.
  • Collaborate with backend engineers to optimize API design and performance, ensuring smooth and reliable interactions.
  • Implement and maintain design systems and reusable component libraries that scale across the platform.
  • Optimize frontend performance (rendering, loading, caching) for video-first discovery and booking flows.
  • Ensure accessibility, responsiveness, and cross-device compatibility.
  • Design and run experiments with Statsig to validate frontend flows, personalization strategies, and conversion improvements.
  • Collaborate with product and growth teams to translate experiment results into scalable product features.
  • Write and maintain unit and integration tests to ensure quality and reliability.
  • Participate in code reviews, debugging, and documentation to maintain a clean, maintainable codebase.
  • Stay up to date with frontend tools, frameworks, and best practices, bringing forward ideas for innovation and scale.


Candidate Requirements

  • Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.
  • 4–5 years of experience in frontend development using React JS and related technologies.
  • Strong knowledge of HTML, CSS, JavaScript, and TypeScript, with the ability to write clean, efficient, and maintainable code.
  • Familiarity with frontend libraries and frameworks such as Redux, Axios, and Material UI.
  • Experience with unit and integration testing frameworks (e.g., Jest, React Testing Library, Enzyme).
  • Understanding of responsive design, accessibility, and performance optimization principles.
  • Familiarity with design tools like Figma or Sketch, and the ability to translate designs into high-quality implementations.
  • Strong problem-solving and analytical skills, with the ability to work independently and in a team environment.
  • Excitement to work in an AI-first company and openness to experimentation frameworks (Statsig, Optimizely, GrowthBook, or similar).
  • A self-starter mindset, comfortable being the first frontend engineer in Europe, and eager to set best practices for the team.

____________________________________________________________

Disclaimer: Calyptus uses an automated assessment tool that scores applicants.


Want to put your job search on autopilot? Join our platform, complete a 6-minute AI screening interview, and get auto-applied to 100s of high-paying roles.

Sign up now at https://app.calyptus.co/auth/candidate/sign-up and let the opportunities come to you.

Key Skills

Ranked by relevance

ai react responsive responsive design design systems javascript typescript sketch figma css
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Posted
Apr 03, 2026
Type
Full-time
Level
Mid-Senior
Location
Netherlands
Company
Calyptus

Industries

Information Services

Categories

Information Technology Engineering

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