java English-speaking jobs in Mainz

Project Engineer for Power Generation Systems conducts technical evaluations and project management for power equipment. Requires a relevant engineering degree and four years of experience with gensets, gas turbines, or generators.

Technical Field Sales Representative needed to support customers and acquire new business across Sweden, Norway, Finland, and the UK. Requires 3-5 years of experience in coatings/paints with a relevant technical qualification.

Postdoctoral Researcher to implement an agentic framework for automating correlative image analysis in BlueMat. Tasks include building LLM-driven agents, creating a natural-language interface, and automating feature extraction from 2D/3D images. PhD in a relevant field is required.

Own large-scale Google Ads and Microsoft Ads across European markets. This role requires a proactive builder with a strong quantitative mindset to drive growth through data-driven execution and AI exploration.

Technical Marketing Specialist TSS supports customers and projects across DACH, Netherlands, and Nordics. This role involves leading application development, advising on next-gen refrigerants, and analyzing field data. Requires a technical degree and experience in HVAC/refrigeration.

Manage administrative HR processes across the employee lifecycle, including contracts and data maintenance. Develop HR Operations processes and systems. Requires HR/Business degree, HR Operations experience, and fluency in German and English.

Senior Software Engineer for Physical AI/Robotics. Own CI/CD, release engineering, and infrastructure-as-code for GPU edge machines. Focus on reproducible deployments, fleet visibility, and security.

Lead growth marketing strategy, overseeing outbound sales campaigns, inbound lead generation, and digital marketing efforts. Requires 7+ years in growth marketing with leadership experience.

Senior leader to build and own the Company Newsroom, shaping the corporate narrative for investors and media. Requires 10-15+ years in senior corporate/financial communications, fluency in German and English, and AI fluency.

Business Consultant for Financial Services. Acts as the link between client business and technology, focusing on requirement gathering, process design, and project delivery across banking and capital markets. Analyzes processes against regulations like MiFID II and DORA.

Support social affiliate strategies for SharkNinja across key platforms. Responsibilities include creator engagement, campaign execution, performance monitoring, and managing partner tasks. Requires fluency in German and English.

Sr. Test and Characterization Engineer for SiC Power Devices. Join Nexperia to contribute expertise to the next generation of high-performance semiconductor solutions in Silicon Carbide technology.

Community Engagement Specialist supports local community relations for a multinational IT company. Responsibilities include site visits, stakeholder contact, managing engagement, and supporting community investment execution. Requires infrastructure/construction experience and native German skills.

Strategic Customer Partnerships Manager connects industry leaders with cutting-edge research in AI, data science, and quantum technologies. This role develops long-term collaborations with companies and top universities to create measurable industry impact.

Digital Pathology Helpdesk Engineer responds to routine customer queries remotely. Responsibilities include remote troubleshooting, logging activities, and escalating complex issues. Requires fluency in German and English, plus skills in software troubleshooting and database management.

Leuphana Transformation Lab offers up to seven postdoctoral fellowships for researchers with a PhD. Fellows will develop a high-quality grant proposal in transformation research, aligning with specific conceptual streams.

Senior Business Development Manager to drive new business with Life Sciences companies needing language services, localization, and AI solutions. Requires fluent German and English, strong sales skills, and experience in the Life Science sector.

Develop FPGA/SoC digital designs for complex laser system control and readout. Own the full lifecycle, from architecture to prototyping and verification. Requires 2+ years in FPGA/digital design with Verilog/VHDL.

Lead cost optimization for building systems at a technology construction company. Define strategy, drive value engineering, and embed cost awareness across product development, engineering, and manufacturing. Requires cost expertise and leadership.

Area Vice President Enterprise Engineering leads a 300-person distributed engineering organization. This role owns the delivery of all Hospital Information System products and translates business strategy into a scalable technology roadmap.