java English-speaking jobs in Mainz

Scientist will support analytical activities within an international pharmaceutical project. Responsibilities include method transfers, development, validation, and verification of analytical methods (HPLC, AAS, KF), analytical testing, and preparing protocols and reports.

Sets up and operates cloud and on-premises infrastructures for AI workloads. Plans, migrates, and integrates existing infrastructures into modern systems. Maintains, operates, and develops infrastructures based on AI application requirements. Designs and implements scalable solutions for GPU clusters, data pipelines, and AI model hosting. Collaborates with specialist departments.

Drive business growth in the manufacturing sector by selling AI-led manufacturing and industrial software solutions. Execute sales and business development, build relationships with C-level decision-makers, and manage the sales pipeline.

Coordinate and manage Dry Gas Seal orders and projects, ensuring on-time delivery. Plan assembly lines, manage customer order schedules, and communicate proactively with customers.

As GENUINE's first HR Generalist, you'll build a world-class team, managing dual recruiting strategies for core operations and Live Hosts. You'll source talent, manage employment contracts, and implement HR technology.

The Chief Engineer is responsible for maintaining hotel facilities and equipment, managing the maintenance budget, and ensuring compliance with health and safety procedures. This role involves managing contractors, ordering supplies, and maintaining records of equipment. The Chief Engineer will also lead and develop a team, proactively identify process improvements, and manage projects.

Working student to support the Product Solutions Team in managing the fund life cycle. Tasks include preparing fund contracts, coordinating with internal and external parties, and handling administrative activities.

Production Operators assemble mechanical, electrical, and composite parts, perform functional checks, and support component testing and documentation. Experience in mechanical/electrical assembly or aerospace manufacturing is required.

Experienced Practice Manager (Business Impact Manager) needed for Oliver Wyman's Consumer, Technology and Telecommunications practice. Supports the practice's strategic and commercial development, operations, and community building. Manages practice staff, support functions, and day-to-day affairs. Requires 5+ years of professional services experience, strong quantitative skills, and proficiency in Microsoft Office Suite. Fluency in English is essential.

Develop and optimize CNC manufacturing processes for precision components. Lead new part introductions, create work plans and inspection plans, and build the quality management system. Act as technical point of contact for customers on manufacturing questions.

Account Executive to drive new business in Germany (East Germany preferred). Manage a defined sales territory, prospect for new clients, and close deals. Must have 3 years of B2B sales experience, preferably in supply chain, logistics, or related sectors. Fluent in German, Polish, and English.

Experienced Mud Men / Recycling System Operators needed for a long-term HDD project in Germany. Operate and maintain mud mixing and recycling systems, prepare drilling fluids, monitor fluid properties, and assist with site logistics.

Business Development Manager will identify, pitch, and secure new APM/PUDO locations. Manage deployment, partner relationships, and site-level P&L. Monitor parcel flow, ensure operational performance, and identify process improvements.

Manpower is seeking temporary warehouse staff for a logistics partner near Gießen. Tasks include processing goods, picking and packing orders, and operating warehouse equipment.

Senior lawyer with 8+ years' experience sought to run and grow their practice within a supportive international firm. Must be a recognized expert in their field, entrepreneurial, client-centric, and collaborative. Fluent English required.

Leads a process engineering team in contactor manufacturing. Manages resources for process support, improvement, and product qualifications. Optimizes processes and technologies to ensure product quality and cost efficiency.

BoP Procurement Manager needed for a leading renewable energy developer. Lead procurement strategy for Balance of Plant packages (up to €200m spend) including transformers, substations, and grid connections. Manage sourcing, tendering, negotiation, and contract award for BoP and BESS packages.

Drive DFS growth in the Enterprise customer segment by engaging with Dell Technologies sales teams, customers, and channel partners. Position financial solutions for large organizations to acquire Dell Technologies products and services.

Manages the engineering aspects of construction projects from concept to completion, ensuring adherence to approved standards and regulations. Oversees project planning, bidding, and execution, collaborating with clients, subcontractors, and engineers. Requires a Bachelor's degree in Civil Engineering or a related field and proven experience in German construction.

Administers, operates, and develops on-premises, hybrid, and cloud-based IT infrastructure. Analyzes, resolves, and remediates issues in the system and network landscape. Optimizes IT processes, system landscapes, and operational workflows. Contributes to IT architecture, including evaluation, collaboration on target architectures, and implementation of new technologies.