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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
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
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
- 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
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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Login to Apply
- 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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