Node.js Developer (f/m/x)

About the Position

We are building a large-scale, cloud-native SaaS platform and are looking for an experienced Node.js Developer to join our engineering team. If you enjoy designing distributed systems, working with modern serverless technologies, and solving complex technical challenges, this role is for you.

Responsibilities

• Design and build backend services in Node.js/TypeScript
• Create and maintain REST and GraphQL APIs
• Implement multi-tenant SaaS logic and data isolation
• Develop serverless solutions on AWS
• Ensure platform security, reliability, and performance
• Collaborate closely with the engineering team on-site

Requirements

• At least 5 years of experience as a Node.js Developer
• Experience in building large-scale distributed systems
• Very good knowledge of TypeScript/Node.js
• Hands-on experience with AWS serverless architecture
• Experience with multi-tenant SaaS platforms and account isolation patterns
• Ability to design APIs (REST + GraphQL)
• Willingness to work on-site in Gdańsk (working from the office 3 days a week)
• Fluent Polish required
• Residing in Poland required

Nice to Have

• AWS
• React.js

We Offer

• 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

About the Company

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.