java English-speaking jobs in Mainz

Build high-impact AI applications and tools to solve real-world problems. You'll design and develop LLM-powered workflows, translate AI capabilities into user-friendly experiences, and iterate on solutions throughout their lifecycle.

Support the development and management of digital communication activities. Contribute to digitalization and communication projects, optimize user experiences, and maintain web and intranet content.

Stranger Soccer seeks a passionate entrepreneur to open and operate their business in Frankfurt. This role involves bringing the brand to life, recruiting and leading a team, securing game venues, and overseeing game schedules. Ideal candidates have a business background, entrepreneurial spirit, and a love of football.

The P&OG Consulting Lead for Diagnostics designs and accelerates organizational effectiveness and transformation initiatives across the Pharma division. This role leads and executes large-scale change and transformation initiatives, partnering with key business leaders and other teams.

PhD position (f/m/d) in cancer metabolism and metabolic plasticity during metastatic progression. The position involves standard molecular biology techniques, cell culture, and animal experiments. Applicants should have a strong background in cancer metabolism and/or cancer metastasis research and experience with cell culture.

Sales Development Representative will reach out to small businesses, introduce SumUp's POS and payment solutions, qualify merchants, and schedule appointments for the Field Sales team.

Leads the global digital experience for Sonova's B2B customers, including hearing care professionals worldwide. Defines and owns the B2B digital strategy, including web, customer portals, e-commerce, and AI-enabled experiences. Drives commercial growth through digital initiatives and builds AI-powered customer experiences.

The TTS Client Executive leads strategic initiatives, drives project success, and maximizes revenue growth and retention for a dedicated client portfolio. This role acts as the primary client interface, fostering a strategic partnership and ensuring a superior client experience.

Legal Counsel will build and manage the legal foundation for a DeepTech venture platform. Responsibilities include advising on corporate law matters, supporting venture creation, and handling day-to-day legal needs.

Experienced General Counsel to advise CEO, executive team, and Board on legal, commercial, and strategic matters. Lead commercial growth through negotiation and management of key agreements. Manage legal function, external counsel, and support strategic projects. German-qualified lawyer required.

Working Student Product Designer will collaborate with cross-functional teams to define problems, conduct research, and create high-fidelity design solutions for Virtual Assembly Line tools. Responsibilities include understanding complex models, designing user-centric solutions, and facilitating user research.

Develop and manage regional distributor partnerships across Asia Pacific, driving sustainable commercial growth. Lead commercial planning, execution, and performance management, conduct market analyses, and ensure compliance with regulations.

Manage liquidity, funding, and regulatory compliance for a €20bn European balance sheet. Serve as a senior member of the Continental Europe Liquidity Management Team, advising business units and senior leadership on liquidity implications of strategic initiatives. Hold direct submission authority for regulatory liquidity reporting to the Bundesbank.

A London-headquartered institutional private equity firm seeks a Head of Capital Formation / Partner to build and lead its investor relations and fundraising function. This role reports to executive leadership and owns the entire capital formation strategy.

Internship in Product and Workflow Management for Refractive Lasers. Work with colleagues on projects to create ideal conditions for your future career.

The Sales Planning and Performance Specialist provides systems and administrative support to the Sales Planning and Performance team. This role extracts and manipulates data for sales performance analyses, reporting, and incentive calculations. The Specialist also supports sales planning processes, coordinates payment calculations, and provides general user support.

The Finance Director will lead a team of Finance professionals, partnering with the Global CLT to drive financial planning, reporting, and operational ownership for HelloFresh SE, HelloConnect Inc., and HelloFresh Services Poland. This role requires expertise in P&Ls, Balance Sheets (IFRS and HGB), and Cash Flow statements, as well as experience in audit, budgeting, and financial systems.

Develop, optimize, and qualify wet-chemical and dry-cleaning processes for semiconductor components. Ensure molecular and particulate cleanliness for components used in high-end electron microscopes. Perform surface analysis using techniques like RGA, XPS, AFM, GCMS, FTIR, SEM/EDX, particle counting, and inspection. Lead contamination root-cause analyses and corrective actions. Conduct supplier qualification and audits to ensure compliance across the supply chain.

Internship in Data Engineering/Data Science supporting innovation and strategy. Develop data pipelines, BI products, and automation solutions. Analyze data, build predictive models, and collaborate across functions.

Responsible for mechanical site supervision during wind turbine installation and completion. Ensures safe, high-quality, and on-schedule execution. Provides technical coordination and supervision of external contractors. Reviews turbine-related reports and documentation. Participates in project and site meetings.