Senior Node.js Engineer – Cloud Integrations & APIs

Sii Poland; Szczecin; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Open and accessible management team

Job summary

Sii Poland is seeking a Senior Node.js Developer to join an international team building and enhancing a strategic integration platform that connects business-critical systems and data platforms.

You will design, develop, and maintain integration services, REST APIs, and AWS-based infrastructure, collaborating with global engineering and architecture teams to improve reliability, observability, and scalability.

Qualifications

• Minimum 5 years of commercial Node.js development experience.
• At least 2 years in system and data integration, including data analysis and transformation.
• Proven experience with distributed systems and scalable, reliable design patterns.
• Hands-on experience designing and implementing REST APIs and building integration solutions.
• Experience with AWS services (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.

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.

Skills

Node.js

Distributed systems

REST APIs

AWS (Lambda, SQS)

Terraform

GitHub workflows

Linux shell scripting

English proficiency

Tools

Terraform

AWS Lambda

AWS SQS

GitHub Actions

Job description

Sii Poland is seeking a Senior Node.js Developer to join an international team building and enhancing a strategic integration platform that connects business-critical systems and data platforms.

You will design, develop, and maintain integration services, REST APIs, and AWS-based infrastructure, collaborating with global engineering and architecture teams to improve reliability, observability, and scalability.