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Sii Sp. z o.o.

Senior Node.js Developer (f/m/x)

Sii Sp. z o.o. Show all offers
B2B
Hybrid
Senior
Katowice
Kraków
Toruń
Szczecin
+10
Expires Nov 4, 2026
18 days ago

In short

Senior Node.js Developer needed for integration services & APIs. Req: 5 yrs Node.js, 2 yrs integration, AWS, Terraform. Hybrid in Katowice. B2B contract.

AI-written summary based on the listing content.

Technologies we use

About the project

Your responsibilities

  • Developing and enhancing integration services and APIs to support business-critical applications and data platforms
  • Maintaining and supporting production integrations while ensuring platform stability and reliability
  • Investigating and resolving integration, data flow, and platform-related issues to improve service quality
  • Designing and implementing REST APIs and modern integration solutions across distributed systems
  • Building and maintaining AWS-based infrastructure and integration components using Terraform and serverless services
  • Improving platform reliability, observability, scalability, and performance through engineering best practices
  • Collaborating with global architecture, product, and engineering teams on technical solutions and platform evolution

Our requirements

  • Minimum 5 years of commercial experience in Node.js development
  • At least 2 years of experience in system and data integration, including data analysis and transformation
  • Proven experience with distributed systems and a solid understanding of design patterns supporting scalability, reliability, and robustness
  • Hands-on experience in designing and implementing REST APIs and building integration solutions
  • Experience with AWS services (especially Lambda and SQS), Terraform, and Infrastructure as Code practices
  • Solid knowledge of GitHub workflows and CI/CD practices, basic Linux command-line skills and shell scripting,
  • Fluent English and residency in Poland

Optional

  • Experience with AI-powered development tools
  • Knowledge of DynamoDB or other document databases
  • Experience with streaming and event-driven architectures
Published 2026-10-05
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