Join our team and shape the future of retail. As a Java Developer at GK – a global leader in retail technology and part of the Fujitsu Group, specializing in checkout, store operations, and customer experience – , you’ll adapt and implement our high-performance solutions to meet the unique needs of international retail clients.
Infrastructure Setup & Configuration Design and implement a production-ready Keycloak setup aligned with organizational security and scalability requirements Integrate Keycloak with existing cloud infrastructure (e. g., Kubernetes, Azure, etc.) and CI/CD pipelines Configure realms, clients, roles, and identity providers based on project and application needs Documentation and Knowledge Transfer Develop internal documentation on Keycloak architecture, configuration procedures, and operational best practices Create developer guides detailing authentication and authorization flows for application teams Establish operational runbooks for common administrative and maintenance tasks Proven experience deploying and managing Keycloak in production environments Strong understanding of OAuth 2.0, OpenID Connect, SAML, and related identity standards Experience integrating Keycloak with Java Spring Boot and microservice architectures Background in DevOps or Cloud Platform Engineering Prior experience configuring Keycloak and the associated database Strong understanding of security best practices and compliance requirements Fluent Engish speaking skills A responsible project within a large international corporationThe prospect of exciting follow-up missions Ihr Kontakt Ansprechpartner Julia Ebler Referenznummer 864016/1 Kontakt aufnehmen Telefon:+49-(0)211-1793888667 E-Mail: julia.ebler@hays.de Anstellungsart Anstellung bei der Hays Professional Solutions GmbH
Design and implement integration solutions using MuleSoft Platform to connect the Learning Experience Platform (LXP) with HR systems and external learning providers Take end-to-end ownership of integration solutions — define specifications, guide designs, take architectural decisions, perform unit tests, and ensure successful go-live Ensure integration landscapes align with enterprise standards and the long term platform roadmap Collaborate with engineering and product teams to translate business needs into technical integration requirements Monitor and analyze integration performance, support troubleshooting, and continuous optimization Produce clear documentation of integration flows, decisions, and processes Embed security, privacy, and compliance considerations into all integration activities Experience as a Java Architect with profound Java knowledge Extensive knowledge of the Mulesoft integration platform. Certification (e.g. Mulesoft Certified Developer) is a plus Strong understanding of system integration concepts, API management, and modern integration patterns Experience designing or supporting integration solutions using REST, SOAP, or event driven architectures Familiarity with API testing tools and automated testing practices (e.g., API test suites, CI/CD pipelines) Strong communication and collaboration skills, with the ability to work effectively across technical and non technical teams, managing dependencies, and ensuring transparent status reporting Languages: English (fluent), German (good knowledge) Possibilities to work in a home office A very renowned company Ihr Kontakt Ansprechpartner Olga Fester Referenznummer 864814/1 Kontakt aufnehmen E-Mail: olga.fester@hays.de Anstellungsart Freiberuflich für ein Projekt
Ferner übernimmst Du die Nutzung zentraler Anypoint-Komponenten wie Design Center, Exchange, Runtime Manager, API Manager und Access Management, entwickelst komplexe Transformationen mittels DataWeave und erstellst Custom Java Components. Du sorgst zudem für die Integration von Systemen wie z.B. SAP, Salesforce, Dynamics 365, 1C ERP, wie auch für den Aufbau und die Pflege von CI/CD‑Pipelines sowie Automatisierungen (z.
Optionally contribute to full-stack development by creating backend REST services in Java. Document your work using UML and AsciiDoctor to keep designs transparent and maintainable. Continuously improve existing UIs for responsiveness, accessibility, and speed – while exploring how AI can personalize and optimize user interactions.
Design and implement integration solutions using MuleSoft Platform to connect the Learning Experience Platform (LXP) with HR systems and external learning providers Take end-to-end ownership of integration solutions — define specifications, guide designs, take architectural decisions, perform unit tests, and ensure successful go-live Ensure integration landscapes align with enterprise standards and the long term platform roadmap Collaborate with engineering and product teams to translate business needs into technical integration requirements Monitor and analyze integration performance, support troubleshooting, and continuous optimization Produce clear documentation of integration flows, decisions, and processes Embed security, privacy, and compliance considerations into all integration activities Experience as a Java Architect with profound Java knowledge Extensive knowledge of the Mulesoft integration platform. Certification (e.g. Mulesoft Certified Developer) is a plus Strong understanding of system integration concepts, API management, and modern integration patterns Experience designing or supporting integration solutions using REST, SOAP, or event driven architectures Familiarity with API testing tools and automated testing practices (e.g., API test suites, CI/CD pipelines) Strong communication and collaboration skills, with the ability to work effectively across technical and non technical teams, managing dependencies, and ensuring transparent status reporting Languages: English (fluent), German (good knowledge) Possibilities to work in a home officeA very renowned company Ihr Kontakt Ansprechpartner Olga Fester Referenznummer 864814/1 Kontakt aufnehmen E-Mail: olga.fester@hays.de Anstellungsart Freiberuflich für ein Projekt
•Experience with technical writing, such as authoring/co-authoring structured technical design WHAT IS THE PLUS POINT(S) •ITIL Foundation Certification •Knowledge in Architecture frameworks like TOGAF will be highly regarded •Object-oriented/object function scripting languages such as Python, Java, C++, etc. WHAT WE OFFER •Great team of professionals and possibility of development •Full support from colleagues during onboarding •Modern offices in Chodov next to metro station •Huge number of internal job opportunities within the company •Home office possibilities •Permanent contract •Company car or car allowance •CAFETERIA employee benefit program with wide selection of benefits from Edenred •Extra week of holiday (25 days/year), 6 Self-sickness days/year, Full salary compensation for up to 10 days absence due to illness per calendar year, Lunch vouchers fully covered by company •Pension Plan contribution, Multisport card, mobile and laptop, fruit days, sport clubs for employees, Referral program……
WHAT YOU WILL DO ·Assist resolving issues of minor significance ·Help to liaise with other internal departments or project teams for completion of project deliverables ·Apply standard methodologies when creating new programs and applications (developing and coding from specifications) or when maintaining existing ones ·Assist in customizing Commercial off-the-shelf (COTS) based on pre-determined parameters, and executes customizing tests ·Document work using the required standards, methods and tools e.g. produce program and system documentation ·Work with team/ colleagues to ensure plans, processes and activity are aligned to customer needs ·Actively share knowledge or experience with others ·Provide additional support when colleagues require time away to attend training/ development programs ·Convey consistent stated personal values through actions and decisions ·Apply data analysis and data modeling techniques to establish, modify or maintain a data structure and its associated components ·Design, code, test, correct, and document simple programs, and assist in the implementation of software which forms part of a properly engineered information or communications system APPLICATION YOU WILL USE: ·Java and J2EE frameworks, HTML, CSS, JavaScript, WebLogic, Spring, Hibernate and JSF WHAT YOU SHOULD HAVE: If you are highly motivated, creative and desireto start and develop your IT career in afast-paced environment, you have come to the right place!
WHAT YOU WILL DO Assist resolving issues of minor significance Help to liaise with other internal departments or project teams for completion of project deliverables Apply standard methodologies when creating new programs and applications (developing and coding from specifications) or when maintaining existing ones Assist in customizing Commercial off-the-shelf (COTS) based on pre-determined parameters, and executes customizing tests Document work using the required standards, methods and tools e.g. produce program and system documentation Work with team/ colleagues to ensure plans, processes and activity are aligned to customer needs Actively share knowledge or experience with others Provide additional support when colleagues require time away to attend training/ development programs Convey consistent stated personal values through actions and decisions Apply data analysis and data modeling techniques to establish, modify or maintain a data structure and its associated components Design, code, test, correct, and document simple programs, and assist in the implementation of software which forms part of a properly engineered information or communications system APPLICATION YOU WILL USE: Java and J2EE frameworks, HTML, CSS, JavaScript, WebLogic, Spring, Hibernate and JSF WHAT YOU SHOULD HAVE: If you are highly motivated, creative and desire to start and develop your IT career in a fast-paced environment, you have come to the right place!
WHAT YOU WILL DO Assist resolving issues of minor significance Help to liaise with other internal departments or project teams for completion of project deliverables Apply standard methodologies when creating new programs and applications (developing and coding from specifications) or when maintaining existing ones Assist in customizing Commercial off-the-shelf (COTS) based on pre-determined parameters, and executes customizing tests Document work using the required standards, methods and tools e.g. produce program and system documentation Work with team/ colleagues to ensure plans, processes and activity are aligned to customer needs Actively share knowledge or experience with others Provide additional support when colleagues require time away to attend training/ development programs Convey consistent stated personal values through actions and decisions Apply data analysis and data modeling techniques to establish, modify or maintain a data structure and its associated components Design, code, test, correct, and document simple programs, and assist in the implementation of software which forms part of a properly engineered information or communications system APPLICATION YOU WILL USE: Java and J2EE frameworks, HTML, CSS, JavaScript, WebLogic, Spring, Hibernate and JSF WHAT YOU SHOULD HAVE: If you are highly motivated, creative and desire to start and develop your IT career in a fast-paced environment, you have come to the right place!
WHAT YOU WILL DO Assist resolving issues of minor significance Help to liaise with other internal departments or project teams for completion of project deliverables Apply standard methodologies when creating new programs and applications (developing and coding from specifications) or when maintaining existing ones Assist in customizing Commercial off-the-shelf (COTS) based on pre-determined parameters, and executes customizing tests Document work using the required standards, methods and tools e.g. produce program and system documentation Work with team/ colleagues to ensure plans, processes and activity are aligned to customer needs Actively share knowledge or experience with others Provide additional support when colleagues require time away to attend training/ development programs Convey consistent stated personal values through actions and decisions Apply data analysis and data modeling techniques to establish, modify or maintain a data structure and its associated components Design, code, test, correct, and document simple programs, and assist in the implementation of software which forms part of a properly engineered information or communications system APPLICATION YOU WILL USE: Java and J2EE frameworks, HTML, CSS, JavaScript, WebLogic, Spring, Hibernate and JSF WHAT YOU SHOULD HAVE: If you are highly motivated, creative and desire to start and develop your IT career in a fast-paced environment, you have come to the right place!