java English-speaking jobs in Mainz

Senior Structural Analysis Engineer will perform stress analysis of rocket structures using hand calculations and FEM. Responsibilities include identifying failure scenarios, collaborating with design engineers, developing test plans, and preparing analysis reports. Requires a degree in Engineering, Aerospace, Mechanical, or (Computational) Mechanics and at least 8 years of experience analyzing aerospace structures. Proficiency in Hypermesh, Optistruct, and CAD software is essential.

Lead procurement and supplier management for the Corrugated Boxes category, ensuring procurement target achievement and cost optimization. Collaborate with stakeholders to define requirements, manage supplier relationships, and execute strategic sourcing projects.

This role combines strategic HR Business Partner responsibilities with operational HR tasks. You will act as a trusted advisor to senior leadership, supporting a high-performance culture and ensuring smooth execution of core HR processes.

The German Cancer Research Center (DKFZ) seeks an IT Security Specialist to define security standards for two data infrastructure projects: the Data Space Project and the German Human Genome-Phenome Archive (GHGA). The role involves analyzing IT security operations, implementing risk management frameworks, and ensuring compliance with modern standards.

Research Associate for projects on carbon dynamics in drylands and climate extremes. Duties include academic services, research, and potential doctoral studies. Requires a university degree in a relevant field and strong programming skills.

Financial Controlling Specialist supports Shared IT organization with budget and capacity planning, financial reporting, forecasting, and closing activities. Provides financial transparency and insights to management and stakeholders. Requires 8-12 years of experience in financial controlling, proficiency in SAP modules and MS Office applications, and strong analytical and communication skills.

Research Associate (75% position) with opportunity to pursue a PhD in Innovation Leadership. Focus on international market expansion strategies, particularly in India and global markets.

Drive net new enterprise revenue and account growth across Europe. Own the full sales cycle for a technical platform focused on AI infrastructure, compute workloads, and performance optimization.

Assistant Breeder will plan, coordinate, and execute yield and nursery trials, including data collection and analysis. Requires a Master's degree in a relevant field, strong organizational skills, and fluency in English and German.

Leads clinical development strategy and ensures scientific integrity for functional gastrointestinal and gastrointestinal motility disorders. Manages clinical study projects, reviews documents, and collaborates with cross-functional teams. Requires a medical, scientific, or pharmaceutical degree and 5+ years of clinical development research experience.

Lead and deliver incident response engagements for clients, managing investigations, containment, and remediation. Provide expert guidance and recommendations to enhance security posture.

Transaction Services Seniors and Managers execute Financial Due Diligence for private equity and corporate clients. Minimum 5+ years' experience in a large accountancy or consulting firm is required. Fluency in English and German is necessary.

Private Markets Data Expert and Owner role at CEPRES. Act as subject matter expert for private market data and client advocate, ensuring data supports high-quality investment research and decision-making. Own and oversee the end-to-end market data lifecycle, from ingestion through validation to investment-grade outputs. Drive data governance standards and monitor data quality. Serve as private markets SME during product design, enhancement, and implementation. Improve transparency, efficiency, and scalability across market data workflows.

This Junior Account Manager role supports the growth and performance of B2B business across channels. Responsibilities include managing orders, optimizing processes, monitoring KPIs, and supporting retail launches. The ideal candidate has relevant experience, a strong interest in retail and commercial topics, and is analytical, detail-oriented, and enjoys working in a team.

As a Retail Associate II, you will provide exceptional customer service, assist with visual merchandising, and process sales transactions. You will also contribute to store profitability by handling product flow and performing designated keyholder duties.

Join the Amazon team at the delivery station, the final stop before packages reach customers. You will receive, prepare, and transport inventory for delivery, using technology and equipment to move packages. Duties include loading conveyor belts, building pallets, and sorting packages. Must be 18 years or older, proficient in German and/or English, and able to lift up to 15kg.

The EU Sustainability & Compliance Project Manager will own Anker Innovations' pan-European sustainability and regulatory compliance strategy for Amazon operations. Responsibilities include managing certifications, ensuring compliance with EU Extended Producer Responsibility regulations, and embedding sustainability principles into product launches and supply chain processes.

The Data Center Engineering Operations Technician is responsible for the delivery of best practice systems and problem resolution on all data center electrical and mechanical infrastructure. This role requires a highly driven individual who demonstrates initiative and proactively seeks solutions to complex technical problems. The technician will be accountable for setting and maintaining the highest standards for safety, driving continuous improvement efforts, and ensuring 100% uptime on all customer-supporting infrastructure.

Leads the implementation of an AI-enabled Intelligent Operations Platform (IOP) for Pharma and Chemical Manufacturing customers. Drives value-creating PoCs, stable deployments, and user adoption. Builds and develops consulting and implementation teams to deliver high-impact solutions.

Supply Chain Quality Engineer focused on interconnect parts and assemblies such as cables, connectors, and spring contact pins. Assures quality and reliability throughout the materials supply chain. Works cross-functionally with suppliers, contract manufacturers, and internal departments. Requires a Bachelor's or Master's degree in a relevant field and knowledge of manufacturing and test processes for complex cable assemblies. Fluent English and German required.