Senior Fullstack Developer – Engineering Portal (React, TypeScript, Python/Golang)
Visa Sponsorship
AI Summary
Join Sii Poland as a Senior Fullstack Developer working on a pivotal engineering portal for a major US-based tech organization. Contribute to front-end design with React and TypeScript while integrating backend APIs. Impact millions of users worldwide through developing scalable, user-friendly internal tools that enhance operational efficiency.
Key Highlights
Development of a web platform supporting technical teams in a cloud-based infrastructure.
Front-end development using React, TypeScript, and UX/UI principles.
Backend API integration with Python or Golang and RESTful API design.
Technical Skills Required
Benefits & Perks
Great Place to Work
Internal training and learning from experts
Profit sharing
Medical care
Modern, well-equipped offices
Integration events and trips
Mobile app
Job Description
Join Sii as a Fullstack 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 implemented in partnership with an engineering team 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
- Backend integration - co-creating APIs and designing intuitive workflows for engineering teams
- Working with frontend architecture, state management, performance optimization, component development, UI scalability
- Proactive approach to UX/UI - simplifying complex technical processes
- At least 5 years of experience as a Frontend Developer
- Very good knowledge of React and TypeScript
- Good knowledge of Python or Golang
- 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
- Self-motivation and initiative
- Residence in Poland required and fluency in the Polish language
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