Full-Stack Developer (Java & Keycloak)

Quick Facts

• Role: Regular Full-Stack Developer (Java & Keycloak)

• Work model: 100% remote

• Contract: B2B

• Rate: up to 150 PLN/h net + VAT

Description

You will develop and maintain solutions based on Keycloak, focusing on authentication and authorization capabilities, integrations with external systems, and project requirements. The role combines Java 17+ backend work with Quarkus, REST API services, OpenID Connect implementation, and supporting frontend component development. You will also monitor and analyze application behavior using available tools.

Responsibilities

• Develop, configure, and maintain Keycloak-based solutions

• Create and evolve integrations between Keycloak and external applications/systems

• Implement and customize authentication and authorization mechanisms

• Extend Keycloak functionality according to project needs

• Build backend features in Java 17+ and Quarkus

• Design and integrate REST API services

• Implement OpenID Connect-based solutions

• Develop and adapt frontend components

• Work with databases and SQL queries (DML/DDL)

• Participate in CI/CD and work with containerized environments

• Monitor and analyze application performance and behavior

• Collaborate with the team on business-driven design and implementation

Requirements

• Minimum 3 years of commercial Java development

• Commercial Keycloak experience (mandatory)

• Practical experience with Keycloak configuration, development, customization, and external integrations

• Experience implementing and modifying Keycloak authentication and authorization mechanisms

• Knowledge of the OpenID Connect standard and HTTP

• Familiarity with Quarkus/Jakarta EE

• Experience building and integrating REST API solutions

• SQL knowledge (DML and DDL)

• Knowledge of Maven and Git

• HTML5, CSS3, and JavaScript (ES6+) knowledge

• Experience with Jenkins and CI/CD

• Knowledge of Docker, Kubernetes, and Helm

• Experience with Kibana or OpenSearch

• English proficiency for smooth communication in an international team

Benefits

• 100% remote work

• Up to 150 PLN/h net + VAT on B2B

• Private medical care package

• Access to MyBenefit cafeteria platform (e.g., MultiSport, prepaid cards)

• Dedicated P&P support throughout cooperation

• Short 14-day invoice payment terms