java English-speaking jobs in Mainz

Country General Manager accountable for commercial, financial, and operational performance of properties in Berlin and Munich. Requires strategic leadership, revenue management expertise, and proven P&L ownership in premium hospitality.

Experienced Project Manager to oversee multiple installation projects across Germany. Responsibilities include on-site measurements, technical drawing interpretation, subcontractor coordination, and budget/schedule management. Fluent German and English required.

Impress seeks a National Orthodontist Manager to lead clinical operations across Germany. This role requires strong leadership, clinical expertise, and operational experience. The successful candidate will ensure compliance with regulations, drive clinical KPIs, and mentor orthodontic dentists.

The Data Center Engineering Operations Engineer is responsible for the delivery of best practice systems and problem resolution on all data center electrical and mechanical infrastructure. This role reports to the Data Center Engineering Operations Manager and involves setting and maintaining safety standards, driving continuous improvement efforts, and collaborating with stakeholders to ensure operational excellence.

Senior Project Engineer to manage installation teams and subcontractors on a flagship Data Centre project in Frankfurt. Deliver projects from conception to completion, ensuring on-time and on-budget execution. Manage purchase orders, project documentation, and liaise with engineers, architects, and stakeholders.

Manage a defined construction package on a large data center project. Experience managing packages or subcontractors on large construction projects, preferably in data center, mission-critical, industrial, or MEP-heavy projects.

Senior Product Manager to drive strategic development for Value-Added Services for a digital bank. Responsibilities include product positioning, performance monitoring, and managing external partners. Requires 5+ years in financial services product management.

Leads and develops the international service & support organization for EPG ONE™ Software Suite. Develops and implements growth strategies for the service business, enhancing the service portfolio and identifying revenue opportunities. Manages the P&L for the service organization and collaborates with cross-functional teams.

Customer Service & Logistics Coordinator needed to manage customer accounts, process orders, coordinate deliveries, and handle customer inquiries. Requires fluency in English and experience in customer service, sales support, logistics, or order management.

Finance leader with Controlling/FP&A expertise sought for project assignments in Healthcare, Life Sciences & Chemicals. Drive budgeting, forecasting, margin analysis, and CAPEX decision support. Provide financial guidance for R&D, pricing, and operational excellence. Strong systems and data skills required.

Lenovo seeks a Cyber Counsel to support cybersecurity legal matters across EMEA, contributing to global initiatives. The role advises stakeholders on cybersecurity laws, regulations, and emerging requirements, including NIS2, Cyber Resilience Act, and DORA.

Continuous Improvement Manager needed for a manufacturing site near Düsseldorf. Drive operational excellence strategy, lead process improvements, and provide training on core standards.

Experienced Electrophoresis Specialist needed for production, optimization, and quality control of electrophoresis products in a GMP/GxP laboratory.

Develop, maintain, and improve crisis and emergency management systems for E.ON. Coordinate and support the activation of the crisis management team, providing decision support during crises. Manage interfaces with external stakeholders and plan, execute, and evaluate crisis exercises.

The IT & Automation Manager supports the delivery and integration of IT solutions and infrastructure for the Mini Terminal project. Responsibilities include ensuring software systems function correctly, integrate effectively, and support operational scenarios. The role also oversees IT infrastructure delivery and operational effectiveness.

Risk Analyst for Due Diligence conducts investigations, analyzes financial data, and assesses credit risks. Prepares reports summarizing findings and recommendations. Requires a degree in economics and experience in banking or finance.

Validation Engineer will plan, prepare, and execute test procedures on test benches and vehicles. Validation of hardware and software functions, including charging infrastructure, control units, and vehicle components. Analysis, evaluation, and documentation of measurement data. Creation of test specifications, test cases, and validation reports.

PhD Student position to study Fe-bearing materials using high photon energy HED experiments. Involves R&D in X-ray scattering and developing dynamic compression experiments. Requires a relevant Master's degree.

Project Manager to deliver client-facing AI projects for a Berlin-based tech scale-up. 2-4 years' experience in consulting, tech consulting, or project management required. Strong communication, stakeholder management, and analytical skills needed. Fluent German and English essential.

Freelance lecturers (m/f/d) are sought for university preparation courses in Berlin, starting September 2026. Subjects include English, Mathematics, Computer Science, Natural Sciences, Economics, and German (as a Foreign/Second Language). Applicants should have a relevant university degree, teaching qualification, or equivalent experience.