W3Global
Software Engineer ( Java, Node.JS, PostgreSQL)
Skills
18 days ago
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Important information
Contract type:
Freelance / Contract
Location:
Kraków, Poland
Work mode:
Onsite
Published on:
1 October 2026
What they need
**Role: Software Engineer
Location: Krakow, Poland(hybrid, 3 days in a week)
Mode: Contract** Experience 7 To 11 Skills: Java, Node.JS, PostgreSQL Responsibilities
- Design build and maintain internal tooling that supports Future State Architecture FSA initiatives across CTO Platforms
- Develop backend services and APIs using Nodejs andor Java
- Integrate applications with PostgreSQL and other enterprise data sources
- Design and enhance webbased user interfaces for architects and engineering teams
- Build and manage agentic AI workflows using autonomous AI agents
- Orchestrate AI agents to automate software build testing deployment and engineering tasks
- Implement MCP toolcalling functioncalling and API integration patterns
- Collaborate with architects platform engineers and stakeholders to translate business requirements into technical solutions
- Ensure solutions meet security resilience performance testing observability and supportability standards
- Contribute to code reviews automation DevOps practices and operational support
- Continuously improve internal tooling engineering processes and platform capabilities
To be successful in this role you should have
Strong software engineering expertise using Nodejs andor Java
Experience designing and developing enterprise backend services and APIs
Strong PostgreSQL experience including data modelling and query optimisation
Experience with modern JavaScriptTypeScriptbased UI frameworks
Knowledge of Agentic AI and Autonomous AI Agent orchestration
Experience implementing MCP Model Context Protocol
Experience with Tool Calling and Function Calling integration patterns
Strong API Design and Integration experience
Solution Design and Architecture experience for enterprise platforms and tooling
Strong understanding of Production Engineering practices including
Security
Resilience
Performance
Observability
Automated Testing
Experience building internal engineering platforms and developer tooling
Excellent communication and stakeholder management skills
Ability to work effectively with global engineering and architecture teams
Experience with Automation DevOps and Operational Support is advantageous
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