Senior Java Engineer (API & Microservices)

Java

Senior Java Engineer (API & Microservices)

Java
Kapelanka, Kraków

Antal Sp. z o.o.

Full-time
B2B
Senior
Hybrid

Job description

Senior Java Engineer (API & Microservices)

We are looking for an experienced Java Engineer who wants to work on scalable, enterprise-grade solutions and have a real impact on system architecture and product development. This role combines hands-on software engineering with solution design, API governance, and close collaboration with cross-functional teams.

Hybrid model: 6-8 days per month from the office in Cracow

Responsibilities

  • Design, develop, and maintain scalable applications and microservices using Java technologies
  • Build secure, reliable, and high-performing APIs and backend solutions
  • Contribute to data modeling, system architecture, and solution design
  • Ensure non-functional requirements such as scalability, security, resilience, and reliability are embedded into the architecture
  • Drive API governance standards across security, process, and system APIs
  • Develop cloud-ready, flexible, and robust solutions
  • Collaborate with cross-functional teams to deliver scalable and efficient products
  • Troubleshoot and resolve complex production issues
  • Perform code reviews, unit testing, and maintain high engineering standards
  • Estimate development effort and support sprint planning activities
  • Work with CI/CD pipelines and follow DevOps best practices

Requirements

  • Strong hands-on experience with Java and Spring Boot
  • Proven experience building APIs and microservices architectures
  • Solid knowledge of Java/J2EE, Spring Framework, Hibernate, and JPA
  • Experience working with RESTful web services and processing XML/JSON data
  • Good understanding of secure coding principles and application security
  • Strong experience with relational and NoSQL databases such as Oracle, PostgreSQL, and MongoDB
  • Expertise in CI/CD pipelines, Jenkins, Docker, Git, shell scripting, and Unix/Linux environments
  • Strong understanding of Agile methodologies including Scrum and Kanban
  • Excellent analytical and problem-solving skills

Nice to Have

  • Experience with JavaScript and frontend technologies such as React, Angular, or Node.js
  • Familiarity with JavaScript build tools and dependency management
  • Experience creating responsive web applications (Bootstrap, mobile-first design, etc.)
  • Exposure to cloud platforms such as GCP, GKE, or AWS
  • Knowledge of system architecture and solution design principles
  • Experience or interest in Python, Machine Learning, or Data Science

We offer

  • Work in a global, forward-thinking cybersecurity environment
  • Real influence on cloud security strategy and standards
  • Flexible working model and strong career growth opportunities
  • Working under a B2B contract or an employment contract with Antal
 
 

Tech stack

    Java

    advanced

    Spring

    advanced

    Hibernate

    advanced

    JPA

    advanced

    RESTful

    advanced

    Linux / Unix

    advanced

    CI/CD

    junior

    Front-End

    junior

    Cloud Computing

    junior

Office location

Senior Java Engineer (API & Microservices)

Summary of the offer

Senior Java Engineer (API & Microservices)

Kapelanka, Kraków
Antal Sp. z o.o.
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