Front-end Engineer

Cleeng

Front-end Engineer joining Cleeng's AI-first platform team enhancing subscriber experiences. Collaborating across functions to build high-quality user interfaces impacting retention and conversion.

Posted 6/18/2026full-timePoznań • 🇵🇱 PolandJuniorMid-LevelWebsite

Tech Stack

Tools & technologies

AWSCloudJavaScriptNext.jsReactTypeScript

About the role

Key responsibilities & impact

Master and evolve our AI-first development workflows
Build and maintain front-end applications using React and TypeScript
Implement user-facing features based on product and design requirements
Write clean, maintainable, and well-tested code
Contribute to component libraries and reusable UI patterns
Collaborate closely with designers, product managers, and engineers
Ensure high quality through automated testing (unit and integration)
Debug and fix issues across different browsers and devices
Continuously look for ways to improve user experience and development practices

Requirements

What you’ll need

Practical use of AI tools in day-to-day development
2-4 years of experience building front-end applications with React
Solid knowledge of TypeScript and JavaScript fundamentals
Good understanding of HTML, CSS, and browser behavior
Experience writing automated tests (unit, integration) and testing frameworks (e.g. Playwright)
Experience building responsive, user-friendly interfaces
Understanding of backend concepts (APIs, server-side logic)
Practical experience using AI tools in day-to-day development
Strong attention to detail and code quality
Good communication skills in English (B2+ minimum)
Proactive attitude and willingness to learn
Nice to have
Experience with Next.js and server-side development
Familiarity with AWS or other cloud environments

Benefits

Comp & perks

Flexible working hours and form of employment;
Possibility to work 100% remotely;
100 % paid sick leave within the agreed limits;
Events, celebrations
Work with an international team of well - rounded experts in Amsterdam (HQ), Poznan, Manila, NYC. 16 nationalities and counting!
Work on unique, market-leading, SaaS products, with clients all over the world, from New Zealand, Japan, Europe, US, and Latam;
Work closely with people who value diversity, hard work, friendly relationships and love their jobs, and get all together to the next level!

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

ReactTypeScriptJavaScriptHTMLCSSautomated testingunit testingintegration testingPlaywrightNext.js

Soft Skills

attention to detailcode qualitycommunication skillsproactive attitudewillingness to learn