Frontend Developer

The client is a leading Polish e-commerce company serving over 20 million users and employing over 1,000 IT specialists to develop proprietary technological solutions. Jit Team is a Polish IT consulting organization with over 15 years of experience, providing specialized teams for global projects and maintaining a focus on professional development and social responsibility.

• Develop web applications using React, TypeScript, JavaScript, and Node.js;
• Create responsive user interfaces following Responsive Web Design (RWD) principles;
• Implement components using Component-Driven Development and integrate Design Systems;
• Work on modular architecture and Micro Frontends solutions;
• Create and maintain unit and end-to-end tests;
• Utilize AI tools and technologies, including integration with AI model APIs and prompt engineering;
• Work with Google Cloud Platform (GCP) services;
• Collaborate within a team using Git version control.

• 6+ Years of commercial experience;
• Proficiency in TypeScript, JavaScript (ES6+), and Node.js;
• Experience with React (v16.8+) including Hooks and Context API;
• Strong knowledge of Vanilla JavaScript, HTML5, and CSS3;
• Experience with Responsive Web Design (RWD) and Atomic CSS / Utility-first CSS;
• Experience with unit testing using Jest and end-to-end testing tools like Cypress or Playwright;
• Knowledge of Component-Driven Development and Design Systems;
• Experience with modular architecture and Micro Frontends;
• Knowledge of Google Cloud Platform (GCP) and cloud solutions;
• Practical experience with AI technologies, LLMs, API integration, and prompt engineering;
• Proficiency in Git;
• English level B2+;
• Nice to have: Opbox framework.

• 1000-1200 PLN netto per day (B2B contract);
• Occasional visits to the office in Poznań or Warsaw (average once a month).