Junior Backend Engineer — Java, Spring, Cloud (CIAM)

3003 Sabre Polska Sp. z o.o.; Kraków; Hybrid; PLN 85,000 - 120,000; Full time

Benefits offered by this job

Paid time off

Paid parental leave

Volunteer time off

Referral bonus

Car and bike parking

Relax zone in modern office

Job summary

Sabre Polska Sp. z o.o. in Kraków is looking for a Junior Engineer to join CIAM-focused backend teams, responsible for authentication, authorization and identity management across Sabre customers.

You will participate in all phases of the software development lifecycle, gain ownership of code, work with Java 21, Spring Boot, Google Cloud, Docker, Kubernetes, and CI/CD pipelines, and leverage AI-assisted development tools to improve productivity.

Qualifications

• Must have: Experience with Java (Java 17/21 preferred)
• Experience with Spring / Spring Boot
• Strong experience with Google Cloud Platform (GCP) and cloud-native development (or similar Cloud Solutions)
• Experience with microservices architecture and REST APIs
• Experience with CI/CD tools (e.g., GitHub Actions, Jenkins, Maven, Git)
• Experience with Linux/Unix environments
• Experience with testing frameworks (e.g., JUnit, Mockito, Spock)
• Good self-organization skills and ownership mindset
• Excellent communication skills in English, written and verbal

Responsibilities

• Build and maintain backend services supporting authentication, authorization, and identity management
• Work with a broad suite of automated tests (functional, integration, performance)
• Deploy and operate services in production environments, gaining full ownership of your code
• Troubleshoot and resolve production issues to ensure system reliability and availability
• Collaborate with product, architecture, and SRE teams to deliver secure and scalable solutions

Skills

Java

Spring / Spring Boot

Google Cloud Platform

Microservices architecture

CI/CD tools

Linux/Unix

Testing frameworks (JUnit/Mockito)

GitHub Actions

English communication

Tools

Docker

Kubernetes (GKE)

Git

Job description

Sabre Polska Sp. z o.o. in Kraków is looking for a Junior Engineer to join CIAM-focused backend teams, responsible for authentication, authorization and identity management across Sabre customers.

You will participate in all phases of the software development lifecycle, gain ownership of code, work with Java 21, Spring Boot, Google Cloud, Docker, Kubernetes, and CI/CD pipelines, and leverage AI-assisted development tools to improve productivity.