Senior C++ Software Engineer

🏢 Summary: The role focuses on designing and implementing modern C++ (C++17/20) components for an embedded Linux IoT gateway runtime, enabling secure communication between devices and cloud services in an intelligent energy ecosystem. It involves developing scalable, service-oriented architectures, optimizing performance on real devices, and contributing to secure device lifecycle management. The position emphasizes system-level programming, concurrency, and networking in a modular embedded environment. 🗂️ Requirements: Degree in Computer Science, Electrical Engineering or related field, Several years of experience in modern C++ development, Hands-on experience with embedded Linux systems, Experience in system-level programming, Strong knowledge of multi-threading and concurrency, Experience with networking protocols, Understanding of distributed or modular architectures, Experience with secure device lifecycle management, Proficiency in English 📃 Skills: C++, C++17, C++20, Embedded, Linux, Multithreading, Concurrency, Networking, MQTT, EEBUS, Yocto, IoT, Security 🏢 Description: What we achieve together In your role as Senior C++ Developer IoT, you design and implement modern C++ components (C++17/20) for our embedded gateway runtime, enabling seamless interaction between devices and cloud services. Your responsibilities will include developing applications for communication, energy management and smart home integration, thereby contributing directly to an intelligent energy ecosystem. Together with an interdisciplinary and international team, you evolve a modular, service-oriented architecture on embedded Linux, ensuring scalability and long-term platform success. By improving performance, robustness and resource efficiency, you ensure that our software reliably operates on real devices in customers’ homes. You actively drive engineering excellence by contributing to code quality, modern C++ standards and best practices in collaboration with senior experts. After analyzing system requirements, you contribute to secure device lifecycle management, including provisioning, authentication and updates, strengthening the trustworthiness of our platform What makes us successful together Qualification: A completed degree in computer science, electrical engineering or a comparable field provides your solid technical foundation. Experience: You bring several years of experience in modern C++ development as well as hands-on work with embedded Linux systems and system-level programming. Know-how and skills: Your expertise includes multi-threading, concurrency and networking protocols, combined with a strong understanding of distributed or modular architectures and a passion for clean, maintainable code. Nice to have: Experience with Yocto or similar build systems, knowledge of IoT protocols such as MQTT or EEBUS, and familiarity with device security concepts add further strength to your profile. Personality: You stand out through your proactive mindset, your ability to drive technical topics and your enthusiasm for working collaboratively in an international team environment. Language skills: You communicate confidently in English and feel comfortable collaborating across borders in a global setup. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: The offer is for a C Software Developer IoT responsible for developing and maintaining embedded C applications on Yocto Linux for intelligent HVAC and smart‑home solutions. The role focuses on integrating software modules, ensuring quality through testing and CI workflows, and contributing to secure, scalable embedded systems connected to cloud platforms. You will work in an agile team across the full embedded lifecycle, driving robust architecture and modern development practices. 🗂️ Requirements: University degree in Computer Science, Electrical Engineering, Embedded Systems or related field, Proven experience in embedded software development with C, Hands-on experience with Yocto Linux, Experience with embedded Linux integration, Experience with unit testing and integration testing, Experience with static code analysis, Experience with CI workflows, Experience with Robot Framework and XRay, Experience with cloud platforms such as Microsoft Azure, Fluent English communication skills 📃 Skills: C, Yocto, Linux, Robot, XRay, Python, Azure, CI, Embedded, IoT, Git, Static-analysis 🏢 Description: What we achieve together In your role as C Software Developer IoT: You will develop and maintain C software running on embedded Linux platforms, creating the foundation for intelligent, connected and sustainable HVAC solutions that improve the daily lives of our customers. Your responsibilities will include integrating software modules into our Yocto Linux environment, ensuring stable, efficient and future‑ready embedded applications. Together with an agile, interdisciplinary team, you ensure software quality through unit tests, static code analysis and integration-level tests executed with frameworks such as Robot Framework and Python, contributing to reliable and transparent development cycles. You design technical concepts that enable seamless smart‑home connectivity, professional digital services and modern home‑energy‑management solutions for Vaillant customers worldwide. By collaborating closely with your team, you contribute to continuous integration pipelines, fast feedback loops and impactful product demonstrations. You take ownership of your code, ensuring maintainability, robustness and full compliance with our architectural principles while actively driving the adoption of artificial‑intelligence‑supported coding tools to boost innovation and efficiency. What makes us successful together Qualification: You hold a university degree in computer science, electrical engineering, embedded systems engineering or a comparable technical field. Experience: You bring a proven track record in embedded software development using C and Yocto Linux, ideally in agile development environments, and you feel confident working across the full embedded lifecycle. Know‑how and skills: You are confident in programming with C, integrating software into Yocto Linux and working with testing frameworks such as Robot Framework and XRay, as well as static code analysis and continuous integration workflows.You have experience with modern cloud ecosystems such as Microsoft Azure or similar platforms.You enjoy working with cross‑functional development teams and navigate technical discussions with clarity and confidence. Nice to have: Knowledge of heating systems, IoT concepts, connectivity protocols, requirement engineering and CI/CD environments is welcome. Openness to modern programming languages such as Rust or Go is considered an advantage. Personality: You are motivated by creating meaningful, user‑focused solutions and thrive in collaborative, agile structures; your proactive communication and strong sense of ownership make you a valued team member. Language skills: You feel comfortable communicating in English in a product‑oriented, international environment. Knowledge of German would be an additional adventage. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: Development-focused role centered on creating and integrating control models for heating and cooling systems using model-based design. The position involves Matlab/Simulink modeling, C++ embedded integration, requirements management, and simulation-based testing within agile teams. The goal is to ensure high-quality, reliable software for innovative energy systems. 🗂️ Requirements: Degree in engineering, computer science, physics or related technical field, Experience in model-based development, Practical experience with Matlab and Simulink modeling, Experience in requirements management, Experience with model-in-the-loop and software-in-the-loop testing, Knowledge of control models and simulation tools, Experience with C++ for embedded systems, Familiarity with modern software testing frameworks, Fluent English language skills 📃 Skills: Matlab, Simulink, C++, Polarion, MIL, SIL, Embedded, Simulation, Testing, Agile 🏢 Description: What we achieve together You create and refine control models for innovative heating and cooling systems in Matlab and Simulink, ensuring that our products deliver outstanding performance and user comfort. By deriving models into our C++ embedded platform, you contribute to smooth software integration and reliable functionality across our product portfolio. Your responsibilities will include defining and managing software requirements in Polarion, ensuring clarity and alignment across interdisciplinary development teams. After conducting simulation‑based tests and integration tests, you support our continuous testing culture to secure high software quality from early development stages onward. Together with agile teams you work towards sprint goals that deliver visible value, fast integrations and meaningful demonstrations for stakeholders. By collaborating across the entire system control and human‑machine‑interface stream, you ensure seamless interaction of features, accessories and system products What makes us successful together Qualification: You hold a degree in engineering, computer science, physics or a comparable technical field and have gained confident skills in model‑based development. Experience: You bring experience in Matlab and Simulink modelling, requirements management and testing approaches such as model‑in‑the‑loop and software‑in‑the‑loop testing. Know‑how and skills: You are familiar with control models, simulation tools, C++ for embedded integration and modern software testing frameworks. Nice to have: Knowledge of heating systems, heat pumps, agile development methods and connectivity topics enhances your contribution to our mission. Personality: You combine analytical thinking with a collaborative mindset, enjoy working in agile environments and value precision as much as creativity. Language skills: You communicate confidently in English, and knowledge of German is an additional advantage. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: Permanent full-time role for an E/E Integration Engineer focused on building and improving automated test frameworks for embedded heating systems within an agile SAFe environment. The position involves ensuring high-quality software through CI/CD support, close cross-functional collaboration, and modern test automation practices. You will work on intelligent heating and smart home integration solutions in Linux-based environments. 🗂️ Requirements: Degree in computer science, software engineering or related field, Hands-on experience in test automation, Experience with embedded or Linux-based systems, Strong Python programming skills, Experience with CI/CD pipelines, Proficiency with Git version control, Experience with test automation frameworks, Ability to work in agile teams, Fluent English or German (written and spoken) 📃 Skills: Python, CI/CD, Git, RobotFramework, Linux, Embedded, TestAutomation, SAFe, English, German 🏢 Description: E/E Integration Engineer Company : Vaillant Group Location : Katowice-POL Country : Poland (PL) Brand : Vaillant Group Contract type : Permanent Working time : Full-time What we achieve together At Vaillant, we don’t just develop technology — we shape sustainable comfort for millions of homes. In our agile System Control & HMI stream, you will help bring intelligent heating solutions to life and create meaningful impact through innovation, collaboration and quality. You will design and continuously improve automated test frameworks that ensure reliable and high-quality software for heat pumps, boilers, and smart system solutions. Working closely with cross-functional teams, you contribute to customer-centric features such as smart home integration and seamless system commissioning. You actively support continuous integration and delivery pipelines, helping us deliver fast, stable and scalable software solutions. Your ideas drive the development of modern testing approaches within an agile SAFe environment, where your voice truly matters. Together with your team, you ensure transparency through meaningful documentation, clear test coverage and impactful demonstrations. By collaborating across agile teams, you help create an inspiring environment where innovation and shared success go hand in hand. What makes us successful together Qualification: You have a degree in computer science, software engineering or a comparable field, enabling you to understand complex embedded systems. Experience: Ideally, you bring hands-on experience in test automation within embedded or Linux-based environments and enjoy working in agile teams. Know-how and skills: Your strong Python skills, combined with CI/CD knowledge, Git, and test automation frameworks (e.g. Robot Framework), empower you to build efficient testing solutions. Nice to have: Experience with C++, Yocto, SomeIP or HVAC systems would enrich your profile and help you quickly dive into our domain. Personality: You approach challenges with curiosity, communicate openly and empathetically, and thrive in collaborative, diverse environments where people support each other. Language skills: You feel confident communicating in English or German, both written and spoken, enabling smooth collaboration in international teams. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: Fullstack Developer role focused on building advanced planning applications and scalable digital solutions for international markets. The position involves developing backend APIs, creating responsive user interfaces, managing cloud-based environments, and owning the platform lifecycle including CI/CD and automated testing. You will work in an interdisciplinary team using modern technologies and AI-supported tools to deliver secure and high-performance enterprise systems. 🗂️ Requirements: Degree in Computer Science, Software Engineering or related field, Minimum 3 years of fullstack development experience in enterprise environments, Strong expertise in React, Strong expertise in Next.js, Strong expertise in Node.js, Strong expertise in Java, Strong expertise in Spring Boot, Experience with REST APIs, Knowledge of databases, Experience with cloud environments (Microsoft Azure), English proficiency at minimum B2 level 📃 Skills: React, Next.js, Node.js, Java, Spring, SpringBoot, REST, SQL, Azure, Docker, Kubernetes, Terraform, CI/CD, AI, LLM, Scrum, Kanban 🏢 Description: What we achieve together By designing advanced planning applications, you contribute directly to the scalability of our digital solutions across international markets. Your responsibilities will include developing robust backend APIs for scheduling, allocation logic, and core platform modules. Together with an interdisciplinary team, you create responsive user interfaces with strong focus on performance, accessibility, and data visualization You actively shape your own AI-supported development environment using modern tools to increase efficiency and innovation. From architectural strategy to operations, you take ownership of the platform lifecycle, including CI/CD and cloud-based environments. Through designing and implementing automated tests, you ensure a stable, secure, and future-proof product landscape. What makes us successful together Qualification: You hold a degree in Computer Science, Software Engineering, or a comparable field. Experience: You bring at least 5 years of hands-on experience in fullstack development within complex, enterprise environments. Know-how and skills: You have strong expertise in React, Next.js, Node.js, as well as Java and Spring Boot, combined with solid knowledge of REST APIs, databases, and cloud environments such as Microsoft Azure. Nice to have: Experience with Docker, Kubernetes, Terraform, CI/CD pipelines, and the integration of AI or Large Language Models will help you stand out. Personality: You are a collaborative team player who enjoys sharing knowledge and thrives in agile environments such as Scrum or Kanban. Language skills: You communicate confidently in English at a minimum B2 level What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: Embedded C++ developer role focused on IoT/cloud-connected heating system software using Embedded Linux, Qt, and SomeIP communication. The position involves developing HMI and control features, testing embedded applications, and collaborating in agile international teams within a SAFe environment. Hybrid work model with quarterly travel to Germany. 🗂️ Requirements: Strong C++, Object-oriented programming, Qt, Embedded Linux, SomeIP, GoogleTest, RobotFramework, Agile, Scrum, English, German 📃 Skills: C++, Qt, Linux, SomeIP, GoogleTest, RobotFramework, Python, IoT, Simulink, CI/CD, Scrum, SAFe 🏢 Description: Work in an international team. The R&D project focuses on communication and integration of devices with the cloud/IoT. Our expectations Strong C++ programming (object – oriented) with QT practical knowledge Embedded Linux development SomeIP communication protocols Testing frameworks: Google Test, Robot Framework Agile development experience, Scrum English or German proficiency Hybrid role (70% remote / 30% onsite in Katowice). Requires quarterly business travel to Germany to participate in planning. Welcome Skills IoT concepts and heating systems knowledge/experience (esp. heat pumps) Model-base development knowledge (Simulink) nice to have CI/CD Know how Key tasks Develop and maintain C++ based embedded software (Embedded Linux) for heating system control Implement graphical user interfaces using QT library Integrate with system architecture via SomeIP communication Perform unit testing (Google Test), static code analysis and support system – level test (Robot Framework and Python) Work and collaborate in agile teams to meet sprint goals The candidate will work in the SCI Stream, currently 6 agile teams focused on SystemControl and HMI software features for products like heat pumps, boilers, and systemsolutions. The mission is to deliver customer-centric solutions through fast integration,continuous testing, and impactful demonstrations. Tasks include, for example, developingheating/cooling features and commissioning functionalities, enabling Smart Homeintegration and supporting system products & accessories. The teams are working as part ofan overall Solution Train within the SAFe framework. The role involves strong collaborationwithin the software development team and across the SCI stream.

🏢 Summary: The offer is for a Fullstack Developer role focused on building and operating reusable frontend components and backend-for-frontend services to deliver scalable digital solutions. You will develop React and Next.js applications, design and integrate APIs, and contribute plugins to a Backstage-based developer platform within an enterprise environment. The role emphasizes high-quality, secure and maintainable solutions across frontend and backend in an agile setup. 🗂️ Requirements: Degree in Computer Science or comparable qualification, 3+ years of professional software development experience, Hands-on experience with React and Next.js, Strong knowledge of JavaScript or TypeScript, Experience designing and implementing APIs, Experience with synchronous and asynchronous integrations, Understanding of security, scalability and reliability in API design, Experience integrating enterprise CMS systems, Fluent English 📃 Skills: React, Next.js, JavaScript, TypeScript, API, REST, GraphQL, Backstage, Azure, CI/CD, DevOps, Databases, Testing, Scrum 🏢 Description: What we achieve together You will design, build and operate reusable front‑end building blocks for B2B and B2C customer solutions, creating scalable and consistent digital experiences across Vaillant’s product landscape. Your responsibilities will include supporting other development teams by encapsulating reusable functionality into stable, secure and high‑performance backend‑for‑frontend services aligned with clear domain contexts. Together with your colleagues, you will contribute to our Digital Solution Platform by developing and operating plugins for our Backstage developer platform, strengthening developer experience and productivity. You collaborate closely with other developers to build, maintain and operate reusable API services that integrate data from multiple sources of truth in a structured and sustainable way. By applying your experience in Scrum and agile software development, you continuously optimise solutions for business value, quality and long‑term maintainability. Through your hands‑on contribution across frontend and backend, you help shape a modern, future‑ready digital foundation that supports Vaillant’s climate‑focused mission. What makes us successful together Qualification: You hold a degree in computer science or a comparable qualification and bring more than three years of professional experience in software development. Experience: You have hands‑on experience developing React‑based web services using Next.js and JavaScript or TypeScript, ideally in enterprise‑scale environments. Know‑how and skills: You are familiar with enterprise content management system integrations and understand the impact of security, scalability, reliability and sustainability on API design.You bring solid experience in designing and implementing APIs, ideally including complex synchronous and asynchronous integration scenarios in enterprise landscapes. Nice to have: Experience with cloud DevOps practices on Microsoft Azure, building continuous integration and delivery pipelines, working with databases and automated testing, as well as exposure to GraphQL or event‑streaming technologies, is considered an advantage. Personality: You enjoy working collaboratively in cross‑functional teams, communicate openly and reliably, and take ownership of your solutions while continuously striving for improvement. Language skills: You communicate fluently in English, enabling effective collaboration with developers and product owners in an international environment. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: Opportunity to work on HVAC and IoT cloud integration projects focused on heating systems, heat pumps, and smart energy management solutions. The role involves automated testing, embedded Linux environments, CI/CD workflows, and collaboration within Agile SAFe teams developing system control and HMI software. Hybrid work from Katowice with quarterly business trips to Germany is required. 🗂️ Requirements: Python programming, Automated testing experience, Robot Framework, Linux administration, Command-line scripting, Troubleshooting, Yocto basics, Embedded Linux knowledge, Git version control, GitHub Actions, CI/CD processes, SomeIP protocols, Scrum experience, Test case creation, Requirements traceability, Test documentation, English or German proficiency, Hybrid work availability, Quarterly travel to Germany 📃 Skills: Python, Robot, Linux, Yocto, Git, GitHub, CI/CD, SomeIP, Scrum, WSL, C++, IoT, SAFe 🏢 Description: About the project A project carried out for the HVAC (Heating, Ventilation, Air Conditioning) industry and the broader field of heating and air conditioning technologies, covering solutions in thermal comfort, building energy management, and energy efficiency (including heating systems, heat pumps, and smart control of installations). The project concerns communication and integration of devices with the cloud / IoT. Our expectations Strong Python programming skills are essential, with practical experience in writing and maintaining test scripts and frameworks. Hands-on experience with e.g Robot Framework for developing and executing automated tests. Good familiarity with Linux systems, including command-line operations, scripting, and troubleshooting. Basic understanding of Yocto and embedded Linux development environments. Proficiency with Git for source code management, including experience with GitHub Actions for automation and CI/CD workflows. Practical knowledge of continuous integration and deployment processes to ensure efficient and reliable software delivery. Knowledge of SomeIP or similar communication protocols used Development Methodologies and Processes Experience working within Scrum teams, participating in sprints, stand-ups, and retrospectives. Basic understanding of requirements management, test case derivation, and traceability. Ability to create effective test cases based on system requirements and specifications, ensuring comprehensive test coverage. Ability to document test procedures, results, and issues clearly and thoroughly. Proficiency in English or German, both written and spoken, to facilitate communication within international teams and documentation. Willingness to work in a hybrid model from the office in Katowice and openness to quarterly business trips to Germany. Welcome Skills Experience with Windows Subsystem for Linux (WSL). C++ programming skills for understanding and possibly extending embedded software components. Knowledge of heating systems, heat pumps, or HVAC systems to better understand the domain-specific context. Key tasks Work within the SCI Stream, consisting of multiple Agile teams focused on System Control and HMI software development for products such as heat pumps, boilers, and integrated system solutions. Develop and enhance system-level features, including heating and cooling functionalities as well as commissioning capabilities. Support the delivery of customer-centric solutions through fast integration of software components and continuous testing practices. Contribute to the preparation and execution of impactful product demonstrations for stakeholders and customers. Enable and support Smart Home integration features within system products and accessories. Collaborate closely with cross-functional software development teams across the SCI Stream to ensure alignment and quality delivery. Work within a SAFe (Scaled Agile Framework) environment as part of a larger Solution Train organization. Participate actively in Agile ceremonies and contribute to continuous improvement across teams and the broader stream.

🏢 Summary: Senior Java Developer role focused on building and maintaining a scalable Keycloak-based Customer Identity Management platform, developing secure REST APIs, and supporting GitOps-driven CI/CD workflows. The position involves Java backend development, identity and access management, and collaboration within agile interdisciplinary teams. 🗂️ Requirements: Degree in Computer Science or comparable qualification, 5+ years of professional software development experience, Experience with Java web services, Experience with JEE, Experience with Spring, Knowledge of REST architectures, Knowledge of Identity and Access Management, Experience with Keycloak, Knowledge of OAuth, Knowledge of OpenID Connect, Familiarity with agile development methods, Business-fluent English 📃 Skills: Java, JEE, Spring, REST, Keycloak, OAuth, OpenID, Kotlin, Kubernetes, GitOps, CI/CD 🏢 Description: What we achieve together In your role as Senior Java Developer (Keycloak), you will contribute to delivering a seamless digital journey for customers and partners across the entire lifecycle of our heating solutions. Working within our Digital Solution Foundations Platform, you will help shape a scalable, secure and future-oriented identity management ecosystem. You take full ownership of a Keycloak-based Customer Identity Management system and continuously further develop it to ensure stability and scalability. Your responsibilities will include transforming reusable functionalities into reliable, secure and high-performing APIs. By implementing monitoring and testing solutions, you ensure the continuous quality and reliability of our digital platform. Together with an interdisciplinary team, you evolve and operate GitOps-based CI/CD pipelines and infrastructure provisioning workflows What makes us successful together Qualification: You have a degree in Computer Science or a comparable qualification. Experience: You bring more than five years of professional experience as a Software Developer. Know-how and skills: You are experienced in developing Java web services based on JEE and Spring using REST architectures and have solid knowledge of Identity and Access Management, including Keycloak, OAuth and OpenID Connect. Nice to have: Experience with Kotlin, cloud-based software development lifecycle, Kubernetes, CI/CD pipelines and GitOps will support your success in this role. Personality: You are familiar with agile development methods and modern architectural patterns, combined with an open, reliable and collaborative mindset. Language skills: Your business-fluent English enables you to communicate confidently with developers, stakeholders and product owners. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.

🏢 Summary: Senior Customer IAM Engineer role focused on owning and modernizing the CIAM platform, including migration from Keycloak to a scalable off-the-shelf solution. The position involves designing secure identity features, standardizing authentication integrations, improving platform reliability, and collaborating with application teams in an agile environment. 🗂️ Requirements: Degree in Computer Science or comparable qualification, 5+ years of experience as a Software Developer, Experience with Java web services, Experience with JEE, Experience with Spring, Knowledge of REST architectures, Knowledge of Identity and Access Management, Experience with Keycloak, Knowledge of OAuth, Knowledge of OpenID Connect, Business-fluent English, Familiarity with agile development methods 📃 Skills: Java, JEE, Spring, REST, IAM, Keycloak, OAuth2, OIDC, SAML, SCIM, MFA, SSO, Kotlin, Kubernetes, CI/CD, GitOps 🏢 Description: What we achieve together As a Senior Customer IAM Engineer , you and your team will take ownership of the customer identity (CIAM) platform and drive the migration from Keycloak to a modern, off-the-shelf market solution to enhance security, availability, and scalability: Architecture & Capabilities: Design and configure modern identity features including MFA, SSO, Social Login, identity federation, passwordless authentication, and consent management. Support & Standardization: Define reusable integration patterns (OAuth2, OIDC, SAML, SCIM) and collaborate closely with application teams to migrate their integrations, standardizing tokens and authentication flows. Advanced Security: Implement and evolve security controls such as bot protection, adaptive authentication, rate limiting, breached credential detection, and account takeover (ATO) protection. Operations & Quality (SRE): Build monitoring, alerting, and runbooks to guarantee high SLA readiness, while ensuring smooth integration with surrounding systems like CRM, customer profile services, and APIs. Operating Model: Advance platform governance and documentation, manage vendor support interactions, and roll out delegated administration (self-service) for development teams. What makes us successful together Qualification: You have a degree in Computer Science or a comparable qualification. Experience: You bring more than five years of professional experience as a Software Developer. Know-how and skills: You are experienced in developing Java web services based on JEE and Spring using REST architectures and have solid knowledge of Identity and Access Management, including Keycloak, OAuth and OpenID Connect. Nice to have: Experience with Kotlin, cloud-based software development lifecycle, Kubernetes, CI/CD pipelines and GitOps will support your success in this role. Personality: You are familiar with agile development methods and modern architectural patterns, combined with an open, reliable and collaborative mindset. Language skills: Your business-fluent English enables you to communicate confidently with developers, stakeholders and product owners. What you can count on Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries. Health & Wellness support : private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces. Time off & balance: additional paid 2 days off and subsidies for recreation. Financial perks: up to 30% discount on company products, support for commuting and eyewear. Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects. Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group. What makes us special We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions. You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate. Become part of the Vaillant Group and help us shape the future of heating! We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.