java English-speaking jobs in Mainz

Executes marketing strategy for international market expansion, analyzes markets and competitors, and manages international categories. Implements innovation roadmaps, manages innovation projects, and collaborates with cross-functional teams. Requires a university degree in Business Administration or comparable qualification and 5 years of experience in international FMCG or OTC brand development/marketing. Fluent in German and English.

The Field Service Technical Support Technician provides technical support for one product line at a high level and basic support for 1-2 additional product lines. This role serves as the primary customer service and technical service representative for second shift requests. Responsibilities include resolving customer issues, testing new technology, and assisting in the development of proactive services.

As Director of Accounting and Reporting, you will build and refine the financial systems infrastructure for a rapidly growing digital bank. You will own the book-close process, ensure data integrity, and navigate a complex regulatory landscape.

The Head of HR for Birkenstock Components oversees all HR functions for the Bernstadt auf dem Eigen factory. Responsibilities include recruitment, performance reviews, wage reviews, disciplinary actions, and works council collaboration. The role requires experience in production HR, payroll management, and conflict resolution.

Freelance lecturer in Business Administration Software Engineering needed for 18 teaching units at IU International University's Bad Honnef campus. Teach fundamental software development knowledge, design courses, and conduct practical teaching sessions. Requires a university degree in Computer Science, Software Engineering, or a related field, practical work experience, and English language skills at C1 level.

Experienced scientists and engineers with PhDs in AI, machine learning, or related fields are sought to contribute to a long-term initiative focused on developing next-generation AI systems.

Designs, develops, and integrates broadcast and event systems, with a focus on drones and 5G technology. Plans and deploys drone systems in complex technical environments. Creates technical concepts and specifications for drone deployments. Collaborates with development teams, project management, and clients to implement innovative solutions. Analyzes existing systems and drives the adoption of emerging technologies. Optimizes system architectures for performance, scalability, and reliability.

Lead Backend Engineer will define and evolve backend systems architecture, ensuring scalability and alignment with product strategy. Responsibilities include driving end-to-end ownership of projects, championing engineering excellence, and leading and developing engineers. Requires strong proficiency in Python, C++, Node.js, and backend frameworks, as well as experience with AWS services, infrastructure as code, and monitoring tools.

Lead procurement and supplier management for the Corrugated Boxes category. Engage with stakeholders to define product requirements and ensure procurement target achievement. Develop and execute category strategies, cost optimization initiatives, and sourcing decisions.

Intern will support the implementation of Agentic AI and Generative AI projects in communication & marketing. Tasks include designing, developing, and implementing agentic AI systems, developing algorithms for AI applications, and conducting experiments to assess AI performance.

The Global Head of Reefer Trade Management is responsible for the overall volume development and GP of Reefer FCL globally. This role drives and defines reefer trade strategies, manages carrier relationships, and sets and executes the global carrier strategy. The Global Head of Reefer Trade Management also leads the global trade management team and collaborates with other departments to ensure successful Reefer FCL business development.

Build lean, high-performance C++ software components with a focus on performance and quality. Analyze systems, write automated tests, and contribute to technical discussions. Master C/C++, databases, Linux, and web technologies.

Provide expert-level support for payroll processing, compliance, and system functionalities. Respond to customer inquiries via email, callbacks, and live chat, delivering timely, clear, and empathetic support. Collaborate with internal teams to troubleshoot issues and develop solutions.

Freelance Webflow Designer & Developer needed to build a new, custom website for a consulting firm. Must have experience with Webflow IX2 interactions, responsive design, and CMS setup. Portfolio of live Webflow builds required.

Drive new customer acquisition and expand existing accounts for Voith's digital solutions, including MillOne, automation modules, analytics, and connected operations. Develop territory and account plans, and translate industrial challenges into digital use cases.

Manage facility processes, ensuring operational condition, delivering services, and optimizing energy performance. Support service provider management, building security, and Health, Safety & Environment initiatives.

Provides technical service and support for GE Healthcare Solution for Enterprise Imaging (SEI) customers in the Greater Munich Area. Responsibilities include troubleshooting, incident management, and customer communication. Requires several years of experience as a System Administrator with strong knowledge of server setup and operations, particularly Windows Server. Must have strong German and English language skills and a valid Class B driving license. Willingness to travel approximately 30% is required.

Experienced AI Engineers sought to develop an AI-driven underwriting platform. Focus on GenAI solutions for document analysis, knowledge retrieval, and prompt engineering within the insurance domain.

Full-time B2B Marketing & Sales Intern supporting market research, marketing strategy implementation, and sales team engagement in the automotive and embedded systems industries.

Provides application support for flow cytometry products to customers in South-West Germany. Conducts presentations, analyzes workflows, and supports sales representatives. Troubleshoots issues and represents the company at events. Requires a university degree in a relevant field, experience with flow cytometry, and fluency in German and English. Travel is required.