Senior Java Developera

Experis ManpowerGroup Sp. z o.o.; Województwo pomorskie; Hybrid; PLN 180,000 - 260,000; Full time

Job summary

Experis ManpowerGroup Sp. z o.o. seeks a Senior Java Developer to join a large-scale payment technology project. You will design backend solutions for a Terminal Management System supporting 300,000+ terminals and contribute to modernization efforts.

The role requires Java 8+, Spring, Hibernate, REST APIs, and strong experience with distributed architectures. You will review requirements, create technical documentation, perform security scans, and help evolve a complex enterprise solution.

Qualifications

• Strong experience with Java 8+.
• Hands-on experience with Spring / Spring Boot.
• Experience with Hibernate / JPA, JEE, RabbitMQ.
• Experience with Oracle Database.
• Experience with REST APIs and system integrations.
• Knowledge of distributed systems.
• Experience with JBoss or WildFly.
• Familiarity with Git, GitLab, Maven, Jenkins, Nexus, Jira.
• Knowledge of security tools Fortify, Sonatype.
• English level B2+.

Responsibilities

• Design and develop backend solutions.
• Review requirements and propose technical improvements.
• Create technical documentation.
• Upgrade and modernize existing systems.
• Refactor legacy code.
• Perform security scans and remediate vulnerabilities.

Skills

Java 8+

REST APIs

Distributed systems

JEE

JBoss/WildFly

Tools

Spring / Spring Boot

Hibernate / JPA

Oracle Database

RabbitMQ

Git

GitLab

Maven

Jenkins

Nexus

Jira

Fortify

Sonatype

Job description

About the Project

We are looking for an experienced Senior Java Developer to join a large-scale payment technology project focused on the development and modernization of a Terminal Management System supporting more than 300,000 payment terminals.

The platform operates in a complex distributed environment and is currently undergoing a gradual transformation towards a more modern architecture. You will work on business-critical systems, contribute to technical improvements, and help drive the evolution of a highly integrated enterprise solution.

Responsibilities

• Design and develop backend solutions
• Review requirements and propose technical improvements
• Create technical documentation
• Upgrade and modernize existing systems
• Refactor legacy code
• Perform security scans and remediate vulnerabilities

Requirements

• Strong experience with Java 8+
• Hands-on experience with:
  • Spring / Spring Boot
  • Hibernate / JPA
  • JEE
  • RabbitMQ
  • Oracle Database
• Experience with REST APIs and system integrations
• Knowledge of distributed systems
• Experience with JBoss or WildFly
• Familiarity with Git, GitLab, Maven, Jenkins, Nexus, Jira
• Knowledge of security tools (Fortify, Sonatype)
• English level B2+