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Sii Poland

Backend Developer with Node.js and Python (f/m/x)

Sii Poland
Poland · Full-time · Mid-Senior

Join Sii and play a key role in delivering secure, enterprise-class identity and access management platforms to international clients. As a Backend Developer (Node.js and Python), you will design and develop cloud-native microservices, modernize legacy IAM components, and build new authentication and authorization solutions. You will collaborate with cross-functional teams and support strategic security initiatives across the organization.

Your tasks

  • Develop and maintain backend microservices using Node.js and Python
  • Design and implement IAM solutions based on OAuth2, OIDC, and JWT
  • Build cloud-native serverless applications on AWS
  • Create and execute automated integration and end-to-end tests
  • Collaborate with architects, SREs, and external partners

Requirements

  • Minimum 5 years of experience with Node.js and Python
  • Knowledge of microservices and distributed systems
  • Experience with AWS services such as Lambda and API Gateway
  • Understanding of authentication and authorization standards
  • Ability to work collaboratively and maintain high code quality
  • Very Good English knowledge, both spoken and written

Job no. 260520-J2BVZ

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.

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

Key Skills

Ranked by relevance

microservices cloud identity and access management serverless python aws
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Posted
May 23, 2026
Type
Full-time
Level
Mid-Senior
Location
Szczecin
Company
Sii Poland

Industries

IT Services IT Consulting

Categories

Engineering Information Technology

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