React Developer

Join Sii as a React Developer and participate in the development of an engineering portal - a key web platform supporting the daily work of all technical teams in a large US-based technology organization.

The portal we support integrates with Kubernetes-based infrastructure and continuous deployment (CI/CD) systems, enabling tools for transparency, automation and operational efficiency.

The project is being implemented in partnership with the engineering team of an organization that provides cutting-edge solutions in the areas of cloud storage, file synchronization and team collaboration. The platform is used by millions of users around the world, and the development of internal tools has a direct impact on the quality and reliability of the entire technology ecosystem.

Your tasks

• Design and development of modern user interfaces using React and TypeScript
• Working with frontend architecture: state management, performance optimization, component development, UI scalability
• Integration with backend - co-creation of APIs and design of intuitive workflows for engineering teams
• Proactive approach to UX/UI - simplifying complex technical processes
  
  

Requirements

• At least 5 years of experience as a front-end developer
• Very good knowledge of React and TypeScript
• Experience working with component architecture and application state management
• Willingness to learn and work with backend systems
• Understanding of UX/UI principles and attention to usability of interfaces
• Ability to design and integrate RESTful APIs
• Independence and initiative
• Fluency in Polish language required
• Residence in Poland required
  
  

Nice to have

• Knowledge of Golang, JAVA or Python will be an added advantage
  
  

Job no. 250916-OG3F2

Benefits For You

Great Place to Work

Solid financial situation

Contracts with the biggest brands

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Medical care