Senior Backend Java Developer

Join CERN as a Backend Software Engineer specializing in Database Systems using Oracle and Java. You will be part of a dynamic team focused on developing robust database solutions that support scientific research and data analysis. Your expertise will contribute to innovative projects that enhance the operational capabilities of one of the world’s leading research organizations.

Who is Sonar?At Sonar, we are dedicated to enhancing code quality and security, empowering developers through innovative AI-driven solutions that streamline workflows. Our comprehensive analysis encompasses all code inputs, ensuring applications are more secure, reliable, and maintainable. With roots in the open-source community, our tools support over 30 programming languages and technologies, serving over 7 million developers and 400,000 organizations globally, including industry giants like the DoD, Microsoft, NASA, MasterCard, Siemens, and T-Mobile.We pride ourselves on fostering an environment that promotes product excellence supported by a strong internal culture. Our team is deeply committed and passionate about our mission and values, upholding high standards of positivity, accountability, and collaboration.At Sonar, we make intentional decisions with clarity, while maintaining a sense of urgency to drive progress. Our operational efficiency and teamwork are key to achieving our objectives.Join us in our mission to transform the developer experience, as CODE embodies our core philosophy guiding our daily operations.

Role Overview CERN is seeking a Database Platform Engineer to help optimize and manage its database platforms in Geneva. This role supports both scientific research and organizational operations by ensuring database systems remain efficient, secure, and accessible. What You Will Do Design, implement, and maintain database solutions to meet evolving needs Work closely with a collaborative team to support and improve database infrastructure Focus on enhancing data accessibility, security, and performance across platforms Monitor and tune systems to ensure databases run reliably and efficiently Location This position is based in Geneva.

Join SonarSource as a Software Engineer specializing in Java integrations and agentic workflows. In this pivotal role, you will collaborate with cross-functional teams to enhance our software solutions, ensuring seamless integration and improved user experiences. Your expertise in Java development will be essential in driving innovative solutions and optimizing our workflows.

Who is Sonar?Sonar is dedicated to enhancing code quality and security, preventing issues from affecting production environments. We empower developers to be more productive through AI-assisted tools, ensuring a smoother developer experience across diverse workflows. Our platform analyzes all code, whether produced by internal teams, generative AI, or third parties, leading to applications that are more secure, reliable, and maintainable. With roots in the open-source community, Sonar supports an extensive array of over 30 programming languages, frameworks, and infrastructure technologies. Currently, our solutions are utilized by more than 7 million developers and 400,000 organizations globally, including esteemed clients such as the Department of Defense, Microsoft, NASA, MasterCard, Siemens, and T-Mobile.At Sonar, we strive to create exceptional products backed by strong internal teams and a robust culture. We are deeply committed to our mission and are passionate about supporting our users, each other, and our open-source community. We maintain high standards and hold each other accountable for demonstrating positivity, dedication, thoughtfulness, empathy, and passion every day.We make decisions with intentionality and clarity of purpose, while also maintaining a sense of urgency to move swiftly.Our effectiveness and operational efficiency are paramount. We work together as One Team to achieve our collective goals.At Sonar, CODE is more than just an acronym – it embodies a mindset that guides our daily operations.Why You Should Apply:Join us at Sonar, where a team of brilliant, motivated, and driven professionals is dedicated to empowering developers to create better and faster. Our solutions enhance code quality and security while minimizing developer workload, allowing them to focus more on their passions and less on tedious tasks. We address the root causes of issues, improving all code whether authored by developers, generated by AI, or sourced from third parties.We foster a dynamic corporate culture with employees across the globe and hub offices located in the USA, Switzerland, the UK, Singapore, and Germany. Our team members thrive in a collaborative environment where innovation and excellence are celebrated.

Join Sonar as a Principal Platform Engineer!At Sonar, we are dedicated to enhancing code quality and security, empowering developers with AI-driven tools, and optimizing workflows. Our comprehensive analysis supports over 30 programming languages, ensuring that applications are secure, reliable, and maintainable. Trusted by over 7 million developers and 400,000 organizations globally, including giants like the DoD, Microsoft, and NASA, we are committed to fostering a vibrant community.We pride ourselves on our strong culture of accountability and positivity, where each team member is dedicated to our mission and the open-source community. We make deliberate decisions with urgency and operate collectively as One Team to achieve our goals.If you are passionate about building exceptional products and want to be part of a dynamic, global team, this is the opportunity for you!

Join our dynamic and globally recognized team of database administrators at Vitol in Geneva, where you will play a pivotal role in both regional and worldwide projects. We are seeking a dedicated individual to bridge the gap between traditional on-premises database management and innovative cloud solutions. If you possess a strong foundation in database administration and are eager to expand your expertise into cloud database setup and management, we encourage you to apply.Key Responsibilities:Oversee the deployment, support, and accountability of databases both on-premises and in the cloud across the following domains:Database hosting and infrastructure managementDatabase administration and securityOracle middleware productsSupport for CTRM (Commodity Trading and Risk Management) and analytics applications, including installation and critical process monitoringCollaborate effectively with teams across infrastructure, security, networking, and application domains on a regional and global scaleDocument best practices and adhere to established proceduresMonitor and manage databases and UNIX systems worldwidePerformance tuning and optimization of database systemsDesired Attributes:A collaborative team player with a direct and open communication styleProactive mindset focused on continuous improvement and efficiencyAbility to take ownership of outcomes in a high-paced environmentWillingness to work flexible hours, including weekends when necessaryCapable of working independently while providing regular updates to management

About SonarSource:At SonarSource, we empower developers by enhancing code quality and security, ensuring that potential issues are addressed before they reach production. Our innovative solutions, powered by AI, streamline workflows and boost developer productivity. With support for over 30 programming languages and frameworks, SonarSource is trusted by over 7 million developers and 400,000 organizations globally, including industry leaders like Microsoft and NASA.Our culture is built on a foundation of commitment, accountability, and a shared passion for excellence. We prioritize collaboration, clarity in decision-making, and operational efficiency, working together as one cohesive team. Here at Sonar, we embrace the CODE mindset, which shapes our everyday operations.Why Join Us?Join a dynamic and diverse group of talented professionals dedicated to revolutionizing the developer experience. At SonarSource, we don't just address the symptoms of code issues; we tackle them at their source, enabling developers to focus on their passions while we handle the rest. Our global presence includes offices in the USA, Switzerland, the UK, Singapore, and Germany, fostering a culture of innovation and collaboration.

CERN, the European Organization for Nuclear Research, is seeking a Ceph Software Engineer in Geneva. This role centers on supporting and improving distributed storage systems that underpin CERN’s scientific work. Role overview The Ceph Software Engineer will help manage and maintain large-scale storage infrastructure. The position involves monitoring system performance, troubleshooting issues, and ensuring reliability for demanding research workloads. Collaboration Work closely with a skilled team of IT professionals. The environment encourages sharing knowledge and applying software engineering skills to refine and enhance storage solutions. What you will do Contribute to the operation and upkeep of distributed storage systems using Ceph. Apply software engineering practices to improve performance and reliability. Collaborate with colleagues to deliver robust storage services for CERN’s research community.

Role Overview CERN is seeking an Embedded Systems Engineer to join the Engineering department in Geneva. This role focuses on designing, developing, and implementing embedded systems that play a key part in supporting scientific projects in particle physics. What You Will Do Design embedded systems for scientific applications Develop and implement solutions to meet project requirements Collaborate with multidisciplinary teams within the Engineering department Who Should Apply This position is well suited for recent graduates eager to apply their embedded systems knowledge in a scientific setting.

CERN seeks an RF System Engineer to support projects at the forefront of particle physics research in Geneva. This position centers on the design, development, and implementation of radio frequency systems that play a key role in CERN’s experimental and research infrastructure. Role overview The RF System Engineer will participate in building and maintaining radio frequency systems used throughout CERN’s facilities. The work involves collaborating with technical teams to ensure these systems meet the demanding requirements of particle physics experiments. Key responsibilities Design and develop radio frequency systems for research and experimental use Implement and test RF solutions to support ongoing projects Contribute technical expertise to the improvement of existing RF infrastructure Location This position is based in Geneva at CERN’s main campus.

About SonarSource:SonarSource is dedicated to enhancing code quality and security, ensuring that developers can focus on crafting excellent software without the hindrance of technical debt. We leverage advanced AI technologies to increase developer productivity and streamline workflows. Our platform analyzes code from various sources, including internal teams, AI-generated content, and third-party contributions, delivering more secure, reliable, and maintainable applications. With a strong foundation in the open-source community, our solutions support a vast array of programming languages and frameworks, empowering over 7 million developers and 400,000 organizations globally, including major players like the DoD, Microsoft, NASA, MasterCard, Siemens, and T-Mobile.At SonarSource, we pride ourselves on creating exceptional products backed by outstanding internal teams and a robust corporate culture. We are deeply committed to our mission and are obsessed with delivering value to our users, our team, and the open-source community. Our high standards foster accountability, positivity, dedication, and passion in our daily operations.We approach our decisions with clear intentions while maintaining a sense of urgency, allowing us to act swiftly and effectively. Collaboration as One Team is at the heart of our operational efficiency.At SonarSource, CODE embodies our principles and drives our daily activities.

Ripple Labs Inc. builds cryptocurrency solutions for financial institutions, businesses, governments, and developers. The company’s mission centers on making value move as seamlessly as information, aiming to improve the global financial system and expand economic opportunities. This Software Engineering Manager position is based in Geneva, Switzerland. The manager leads a team of engineers dedicated to delivering high-quality products. Collaboration with other teams is essential to set clear project goals and ensure strong development and deployment practices. What you will do Guide and mentor software engineers to deliver reliable, high-quality products. Work with cross-functional teams to define objectives and project outcomes. Promote and uphold best practices in software development and deployment. Requirements Demonstrated experience managing software engineering teams. Strong knowledge of software development methodologies and practices. Excellent problem-solving abilities and communication skills.

Join the prestigious team at CERN as a Software Engineer, where you will contribute to groundbreaking research and cutting-edge technology. You will be involved in designing, developing, and maintaining software systems critical to the scientific community.

Role overview The Staff Software Engineer, Infrastructure position at Ripple in Geneva centers on developing and enhancing the backbone systems that power Ripple’s services. This role requires deep technical expertise and a commitment to delivering stable, high-performance infrastructure. What you will do Design, implement, and maintain essential infrastructure components Collaborate with engineering, product, and operations teams Find opportunities to improve system reliability and performance Strengthen the foundation for Ripple’s services to ensure scalability and resilience Impact Work in this role supports the smooth and efficient operation of Ripple’s services, helping the company meet current demands and prepare for future growth.

Join CERN, the world's largest particle physics laboratory, as a Software Engineer specializing in Accelerator Controls. You will be pivotal in developing and implementing software solutions that enhance accelerator systems, ensuring they operate efficiently and effectively.

Join OWT, a forward-thinking strategy and technology consulting firm and a subsidiary of Swisscom. We empower our clients to harness cutting-edge technologies to reshape their businesses, innovate new products, and transform their organizations.Your Role:As a Senior Java Developer, you will partner with our project managers and architects to develop high-quality web applications across diverse and innovative projects. You will be involved in the entire application lifecycle, ensuring optimal performance, security, and scalability.Design, develop, and maintain complex applications or systems.Contribute to architectural definitions by proposing innovative technical solutions.Work in an agile environment and apply the best practices of the DevSecOps approach.Support the Technical Team Lead in code reviews and writing technical specifications.Mentor less experienced developers and share best practices.

At Ripple, we are revolutionizing the way value is transferred globally, mirroring the speed and efficiency of information exchange. Our mission is ambitious yet attainable, as we deploy innovative crypto solutions for financial institutions, businesses, governments, and developers. By enhancing the global financial system, we strive to foster economic equality and create opportunities for individuals across various regions. Join us in this extraordinary journey to make a tangible impact while working alongside supportive colleagues who empower your growth.As a part of our expansion into the multi-trillion-dollar corporate finance sector through the acquisition of GTreasury in 2025, we are committed to integrating cutting-edge treasury management solutions into our technology framework, enabling real-time liquidity management across both traditional and digital assets.We invite you to be a part of shaping the future of corporate treasury and the infrastructure that supports the Internet of Value.We are looking for a creative and forward-thinking Staff Software Engineer who is passionate about developing a world-class platform in collaboration with a talented team. Your role will involve creating technical excellence in software application design, implementation, and maintenance, ultimately leading to exceptional outcomes.

Role Overview Speechify is hiring a Software Engineer to join the iOS Core Product team in Geneva, Switzerland. This team focuses on building and refining key features for Speechify’s iOS applications. What You Will Do Develop user-friendly iOS applications with attention to quality and reliability Work closely with engineers, designers, and other teams to deliver new features Help maintain and improve the performance of core iOS products Location This position is based in Geneva, Switzerland.