Fullstack Developer (m/f/d) System Modernization & Strategic Delivery

Protect what matters. Primion Technology is a global solution provider and market leader in Converged Security Solutions and Workforce Management . For more than 30 years, we have supported around 4,000 satisfied customers worldwide who rely on our certified solutions every day. From consulting and planning to development, installation, maintenance, and support, a team of over 470 dedicated experts works passionately to meet the highest standards. This role requires an accomplished Fullstack Developer with exceptional expertise across both the Java/Spring backend and the Angular frontend , specifically adept at modernizing legacy systems and integrating new services with established architectures. The ideal candidate is a proactive, DevOps-minded collaborator who can drive solutions from strategic design to automated, continuous deployment. Join our team and apply today on a 100% Remote-Basis as Fullstack Developer (m/f/d) System Modernization & Strategic Delivery! Key Responsibilities Architect and design robust full-stack solutions to translate complex requirements. Develop new RESTful APIs over existing core Java systems using Spring Boot . Build and evolve dynamic, scalable user interfaces using Angular and PrimeNG . Implement a comprehensive testing strategy, including Playwright E2E testing. Own and optimize our automated CI/CD pipelines (ideally GitLab CI/CD ). Key Qualifications Architecture & Solution Design Solution Design & System Architecture : Proven ability to translate complex business requirements into scalable, maintainable, and robust full-stack solution designs . Expertise in defining architectural patterns (e.g., Microservices, Layered Architecture) that facilitate system modernization while ensuring seamless integration with existing core Java and legacy systems. Design Documentation: Skilled in creating clear architectural documentation, flowcharts, and technical specifications to align development teams and stakeholders. Core Technical Expertise Backend Mastery: Java, Spring & System Integration Java Expertise & Legacy System Integration : Expert-level proficiency in Java (core concepts, data structures, algorithms). Proven ability to analyze, comprehend, and integrate with existing complex Java codebases , developing new functionalities and RESTful facades on top of established architectures . Spring Framework & Modernization : Solid experience building enterprise-level applications using the Spring Framework (Spring Boot, Spring MVC, Spring Data). Adept at leveraging Spring to modernize existing systems and build robust, well-tested layers over legacy code. RESTful APIs & OpenAPI Specification: Strong ability to design, develop, and consume RESTful APIs . Extensive experience defining and documenting APIs using the OpenAPI Specification (Swagger) . Frontend Mastery: Angular & UI/UX Evolution Angular Expertise & UI/UX Evolution : Master-level proficiency in designing and building highly dynamic, responsive, and performant user interfaces using Angular. Demonstrated ability to evolve and re-architect existing Angular applications for scalability. PrimeNG Framework & Component Architecture : Extensive experience with the PrimeNG component library. Proven ability to customize, extend, and optimize components, contributing to a reusable component library. API Integration & OpenAPI Proficiency: Strong capability in consuming and integrating with complex RESTful APIs . Utilizing OpenAPI Specifications (Swagger) for efficient API understanding and integration. Quality & DevOps Automation Automated Testing Full-Stack Testing Strategy: Expertise in implementing a comprehensive testing pyramid, including unit, integration, and end-to-end (E2E) tests. E2E Testing with Playwright: Strong, hands-on experience designing and implementing reliable and fast End-to-End tests using Playwright for cross-browser validation of the Angular application and its integration with the backend APIs. Backend Quality: Proficient in w