Java Developer (K/M)

October 18, 2026

Hybrid

Junior

Warsaw, Poland

Keep in mind

Original vacancy is in Polish
You will likely need Polish for the job. The employer can confirm

Description

Entry-level Java Developer (m/f) position in telecommunications, full-time with a hybrid model in Warsaw. The role covers designing IT solutions on the Spring ecosystem, maintaining assigned systems, testing, documentation and automation of configuration and deployment. It also includes monitoring, backups, security and performance work alongside software development.

Responsibilities

Designing IT solutions based on user requirements and architectural standards
Maintaining assigned systems and applications, controlling modifications and their consistency with the overall solution architecture
Analyzing and consulting on architecture and technical designs of new and modified systems, supervising design work
Developing software and software components, testing IT systems and ensuring software quality standards
Supporting problem solving, analyzing system operation and recommending improvements
Preparing system documentation including incident handling and recovery procedures, and user documentation
Maintaining and monitoring systems, managing logs, tracking metrics and diagnosing issues
Ensuring application and infrastructure security and compliance
Monitoring system performance and availability and ensuring their reliability
Creating and maintaining data backups and restoring systems in case of failures
Writing scripts and tools to automate configuration, deployment and infrastructure management

Requirements

Solid experience in the Spring ecosystem (Spring Boot, Spring Data, Spring Cloud)
Practical experience with Apache Kafka integrations and processing
Working with databases from document (MongoDB) to relational (Oracle, MS SQL, PostgreSQL)
Knowledge of BPMN or the Camunda platform
Proficiency in Git and CI/CD principles
Experience with containerization and orchestration (Docker, Kubernetes, OpenShift)
Knowledge of Hibernate, Flyway/Liquibase and SOAP/REST protocols
Familiarity with build tools (Gradle, Maven)
Comfortable working in Unix/Linux environments

Conditions

Full-time employment
Hybrid work model
Access to a training platform with courses
Benefits package: Multisport card, LuxMed medical care, life insurance and employee offers
Co-financing for sports and hobby section activities