Senior Backend Engineer — Java & Node.js AI Platforms

Randstad Polska Sp. z o.o.; Kraków; Hybride; PLN 180 000 - 240 000; Plein temps

Résumé du poste

Randstad Polska Sp. z o.o. in Kraków seeks a Senior Software Engineer (Dual Backend) to design, build and maintain high-performance internal platforms and developer tooling.

You will split backend work between Java and Node.js (TypeScript) while driving Agentic AI, MCP, and autonomous developer workflows in a hybrid Kraków environment. Ideal candidates have extensive enterprise backend experience, PostgreSQL modeling, and API orchestration, with a passion for AI-augmented developer platforms and

Qualifications

• 7+ years of backend engineering experience
• Strong hands-on Java and Node.js (TypeScript)
• PostgreSQL data modeling and API orchestration
• Experience building internal developer platforms or tooling

Responsabilités

• Design, build and maintain internal tooling for Future State Architecture initiatives
• Develop backend services and APIs using Node.js and/or Java
• Integrate with PostgreSQL and other data sources
• Collaborate with architects and stakeholders to translate requirements into solutions
• Contribute to code reviews, DevOps practices and observability

Connaissances

Java

Node.js

TypeScript

PostgreSQL

API design

DevOps CI/CD

Outils

MCP (Model Context Protocol)

Agentic AI

Tool/Function Calling

Description du poste

Randstad Polska Sp. z o.o. in Kraków seeks a Senior Software Engineer (Dual Backend) to design, build and maintain high-performance internal platforms and developer tooling.

You will split backend work between Java and Node.js (TypeScript) while driving Agentic AI, MCP, and autonomous developer workflows in a hybrid Kraków environment. Ideal candidates have extensive enterprise backend experience, PostgreSQL modeling, and API orchestration, with a passion for AI-augmented developer platforms and