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May 27, 2026

Middle Java backend

Mid • Hybrid

900 - 950 PLN

Warsaw, Poland

Job Description:
We are looking for skilled Java Backend Developers with strong experience in Java, Spring technologies, and microservices architecture. The ideal candidate will have hands-on expertise in backend development, REST APIs, containerized applications, and Agile delivery environments.

Qualifications:

  • Minimum 3+ years of relevant professional experience

  • Proficiency in Java 8+, REST APIs, Spring Boot, and Spring technologies

  • Experience in building microservices and working with Kafka

  • Solid understanding of HTTPS, SFTP, REST API, and SOAP protocols

  • Familiarity with Linux operating systems

  • Strong understanding of microservices architecture and containerization

  • Knowledge of Agile frameworks and principles

  • Experience with Git/GitHub, GitHub Actions, Maven, Jenkins, and Jira

  • Competence with MySQL and SQL databases

  • Strong analytical and problem-solving skills

  • Excellent written and verbal communication skills

  • Ability to collaborate effectively with Product, QA, DevOps, and Agile/Scrum teams

Mandatory Skills:

  • Java (Spring)

  • REST APIs

  • Spring Boot and Spring Technologies

  • HTTPS, SFTP, REST API, and SOAP protocols

  • Microservices architecture and containerization

  • Git/GitHub, GitHub Actions, Maven, Jenkins, Jira

  • MySQL and SQL databases

Desired Skills:

  • Strong analytical and troubleshooting abilities

  • Excellent communication skills

  • Team collaboration experience within Agile/Scrum environments

Roles & Responsibilities:

  • Contribute to technical design and engineering activities

  • Develop strong domain expertise within the project

  • Analyse functional and technical requirements

  • Support architecture and design discussions

  • Collaborate with Architecture and Business teams

  • Participate in development, design, code reviews, and implementation

  • Follow engineering best practices and support continuous improvement initiatives

Out of Scope:

  • Creating product requirements

  • Acting as Scrum Master or Product Owner

Project Details:
Primary focus is on Java backend development.