Java Developer

Quick Facts

• Role: Java Developer (cards and payments)

• Focus: Business logic, APIs, performance optimization, code quality

Description

Implement business logic and APIs, optimize performance, and participate in code reviews to maintain code quality for a payments/cards initiative.

Responsibilities

• Implement business logic and APIs

• Optimize performance of solutions

• Participate in code reviews and maintain high code quality

Requirements

• Practical knowledge of Java and Spring Boot 4.x, Spring, Maven, Lombok

• Experience with API development, RESTful web services, and OpenAPI 3

• Ability to optimize performance

• Knowledge of relational databases and SQL, especially PostgreSQL, with Flyway and jOOQ

• Programming experience in Java 17–21 and automated testing with Spock + Groovy

• Familiarity with software development tools: IntelliJ IDEA, GitLab, Jenkins, Artifactory, ELK

• Knowledge of containerization and deployment automation: Docker, Ansible, OpenShift

Benefits

• B2B contract

• Expected service period: 12 months

• Collaboration model based on project needs, including client office work (about 1–2 times per week, Chmielna 89, Warsaw)