JavaScript Engineer

Job Description

Overview
We are looking for a skilled Frontend Developer with strong Next.js experience to build modern, high‑performance web applications. You will be responsible for developing scalable UI solutions, improving user experience, and working closely with backend and product teams.

Key Responsibilities

• Develop and maintain web applications using Next.js and React.
• Implement server-side rendering (SSR), static site generation (SSG), and incremental static regeneration (ISR).
• Build reusable, maintainable, and scalable UI components.
• Create responsive, accessible, and cross-browser compatible interfaces.
• Integrate frontend applications with RESTful or GraphQL APIs.
• Optimize application performance (lazy loading, code splitting, caching strategies).
• Manage client-side state using tools like Redux, Zustand, or React Query.
• Implement authentication flows and handle secure data interactions.
• Collaborate with designers and product teams to deliver user-friendly solutions.
• Participate in code reviews and maintain high code quality standards.
• Contribute to frontend architecture decisions and best practices.

Candidate Requirements

• Strong experience with Next.js and React.
• Solid understanding of JavaScript (ES6+) or TypeScript.
• Experience with SSR, SSG, and modern frontend rendering patterns.
• Proficiency in HTML, CSS, and modern styling frameworks (e.g., Tailwind, CSS Modules, Styled Components).
• Experience working with APIs (REST or GraphQL).
• Understanding of frontend performance optimization techniques.
• Familiarity with version control systems (Git).

What You Will Love About Working Here

We care about all our employees and want them to feel as comfortable as possible. That's why we offer health insurance from the first days, regardless of the probationary period.The Gift from the Company - Christmas holidays from December 25 to December 31.Cooperation with Superhumans center and Veteran HUB. Capgemini Engineering has supported the launch of psychological rehabilitation department of Superhumans. Our team also donated over UAH 500 000 prosthetics for three Ukrainian defenders. Currently, we support psychological counseling provided by the Veteran Hub, and we have implemented an internal policy making the company friendly to military and veterans with the assistance of the Hub.