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.
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.
As part of our team, you will take on the following responsibilities: You design and implement innovative, service-oriented software solutions in the Java environment with a focus on microservices.You analyze functional, technical, and business requirements and actively contribute to implementation.
What makes you stand out You combine strong analytical and conceptual thinking with a keen understanding of customer needs.You are experienced in Java and JavaScript/TypeScript, familiar with common pitfalls, and know how to catch them early through automated testing.You have hands-on experience with acceptance testing tools such as Playwright, Cypress, or Selenium.You bring solid experience in system testing - using Postman for manual API tests and REST Assured with JUnit for automated ones.You have several years of development experience, with a strong focus on automated integration testing and test strategy design (TDD, BDD, risk-based testing).Ideally, you also have experience creating load test scenarios using JMeter and are familiar with cloud platforms such as Microsoft Azure.You enjoy working with containers and messaging systems like Kafka, and you’re eager to design automated test scenarios across a complex, distributed application landscape.You have practical experience in test case management and documentation, using tools such as Zephyr to ensure full test coverage.You have hands-on experience with system monitoring and observability, using tools such as Grafana and Instana to analyze performance metrics and detect issues early.You speak English fluently and have an good command in German in a business context.
What makes you stand out Required Qualifications: You hold a degree in Computer Science or a related field and have 3+ years of experience in agile software development, with knowledge of the full engineering lifecycle.You have hands-on experience with Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), MCP servers, agentic AI, and other advanced AI solutions, including practical experience in building and deploying such systems.You are familiar with AI cloud platforms such as Azure AI Foundry and/or conversational AI platforms (e.g., Cognigy), have hands-on DevOps skills ideally in the Azure Cloud (ADO), and bring basic knowledge of cloud technologies, preferably Microsoft Azure.You are familiar with programming fundamentals in at least one high‑level language such as Python, Java, or TypeScript, ideally developing microservices using frameworks such as Flask, Django, or Spring (Java).You communicate clearly and effectively in English and German.
What makes you stand out Degree in Computer Science or a related field.4+ years of experience in agile software development with solid understanding of the full engineering lifecycle.Hands-on experience with: Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), MCP servers and Agentic AI systemsDesigning, building, and deploying advanced AI solutionsExperience with AI cloud platforms (e.g., Azure AI Foundry) and/or conversational AI platforms (e.g., Cognigy).DevOps experience, ideally within Microsoft Azure (ADO).Programming experience in at least one high-level language such as Python, Java, or TypeScript.Experience developing microservices using frameworks like Flask, Django, or Spring (Java). We are looking forward to your application and to applicants who enrich our diverse culture!
What makes you stand out You have several years of professional experience as an integration expert.You have solid experience in the development and operation of secure, resilient, and scalable Java and Spring Boot applications.You bring strong technical know‑how in API development and integration.You have experience developing Apache Kafka clients as producers and consumers or working with other streaming technologies.You are also familiar with cloud and container technologies such as Azure, Docker, Kubernetes, Helm, or serverless functions.You have experience using testing tools such as Postman, Cucumber, RestAssured, or JMeter.You have very strong communication skills in German and English and are able to express yourself clearly and confidently both in writing and verbally.Optionally, you have experience with Apache Camel or other integration, middleware, or ESB tools.A plus is if you have solid experience in logging and monitoring and have worked with Grafana or ELK and Elastic monitoring stacks.
What makes you stand out Proven experience in RPA development (minimum 3 years) using tools like UiPath, Automation Anywhere, or Blue Prism.Strong programming skills in languages such as C#, .NET, Java, or Python.Knowledge of software development methodologies, Agile frameworks, and version control.Experience with process mapping and business process analysis.Strong problem-solving and debugging skills.Excellent communication skills, with the ability to collaborate effectively with cross-functional teams.Bachelor’s degree in Computer Science, Information Technology, or a related field.
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
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
We are seeking a (Senior) Java Software Engineer (m/f/d) to join as a member of the the SCADA/IIoT software development team at Nordex which is responsible for the development and maintenance of the SCADA/IIoT solution as a product.
B2B tools and message standards, middleware, SOA concepts, data communications, visibility tools)Ability to analyze and decompose business needs into sets of IT requirementsSolid knowledge of Test Management, Change Management, Configuration ManagementCustomer OrientatedStrong ability to solve problems and propose suitable, alternative solutions and interpersonal and influencing skillsStrong organizational awareness and experience in managing medium scale projects/ consultancy assignments (6-12 months) with direct business impact and firm deadlinesExcellent written and verbal communication skillsProactive WHAT IS THE PLUS POINT(S) ·Java/Angular/NodeJS Web Development Knowledge. ·Data base knowledge (Oracle, Teradata) ·Knowledge on Scrum & Agile ·Knowledge on data warehouse/ business intelligence Experience in implementation of web development projects is preferred.
Assist with quality assurance of activities and educate less experienced colleagues in related areas.Liaises with staff for the development of system enhancements to overcome known problems or further fulfil user requirements Be responsible for the adoption of new software releases from systems development staff or software suppliers and ensuring the continued support of the service thereafter Act as Service Owner for regional service, Global or Top Service By Revenue Be assigned specific project related tasks by Project Manager APPLICATION YOU WILL USE: Unix / Linux commandShell ScriptingOracle SQL WHAT YOU SHOULD HAVE: Degree in Computer Science, Information Systems or equivalent experience 3–5 years of working experience in performing L2 application support of large enterprise application Must have hands on knowledge on scripting languages like Java script and Shell Script. Good Experience in SQL query on SQL Server, MySQL and Oracle. Spring or Struts Hibernate knowledge. 1 or 2 years experience on OpenShift Containerization (It us for 100% uptime CPU).
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!