java English-speaking jobs in Mainz

Senior Scientist to contribute to the development of bioelectrochemical technology for enhanced biomethane production. Responsibilities include defining research questions, designing experiments, and translating scientific outcomes into actionable decisions. Requires expertise in applied bioelectrochemistry, anaerobic digestion microbiology, and scale-up awareness.

Transaction and Valuation Manager (f/m/d) will lead valuation workstreams, prepare performance analysis, and model financial scenarios for E.ON Group decisions.

IT Service and Incident Manager responsible for designing, maintaining, and improving IT controls and security measures. Manages ITIL-based service processes, conducts audits, and provides technical support for Matrix42. Requires a degree in computer science or related field, 3-5 years of IT service management experience, and knowledge of ITIL and relevant standards.

As a Service Technician, you will install, maintain, and repair robotic systems at customer sites across Germany, Austria, and France. You will diagnose and troubleshoot technical faults, conduct service checks, and ensure smooth system operation.

Plan International seeks a Head of International Cooperation Division to implement and develop the division's strategic goals, oversee program activities, and represent the organization internationally. The role requires experience in international cooperation, program management, and leadership.

Designs and develops high-end C++ components for medical desktop applications, focusing on performance, stability, and scalability. Architects, implements, and reviews complex multithreading and parallelization concepts. Analyzes, refactors, and optimizes existing codebases, identifying bottlenecks and improving performance.

Medical Director for AI Safety & Clinical Solutions will design and execute AI safety testing protocols for clinical AI modules. This role involves validating AI-generated clinical content, partnering with sales as a clinical subject matter expert, and engaging with clients to frame the value of Avo's solutions.

Associate Legal Counsel will draft, negotiate, and advise on technology service agreements for AWS commercial customers in Germany and EMEA. The role provides legal counsel on product development, operational, security, compliance, and data protection matters.

IT System Administrator responsible for planning, implementing, and administering IT infrastructures in Windows Server environments. Supports and develops Microsoft 365 environments for SME clients. Requires 3+ years of experience and business-level German proficiency.

The Collaborating Centre on Sustainable Consumption and Production seeks an External Funding Manager to provide financial and administrative support for externally funded projects. The role involves costing, project set-up, controlling, communication with project teams and funders, accounting, and audit support.

Postdoctoral position in Computational Imaging and cryo-electron tomography. Develop computational methods for deformation-aware reconstruction in cryo-ET. Focus on modeling and correcting local, non-rigid deformations in tilt-series data.

Ensures availability, stability, security, performance, and scalability of BI/ML platforms. Designs and operates data platforms based on container technologies in cloud and hybrid environments. Automates and optimizes processes using CI/CD pipelines, GitOps, and Infrastructure-as-Code.

Research Assistant to support teaching, research, and academic self-governance at the Dr. Werner Jackstädt Endowed Chair in Management Control & Accounting. Focus on performance measurement, incentive design, and AI-supported information systems. Doctoral dissertation completion and participation in research projects expected.

Interim Chief Financial Officer to lead finance organization through transformation and integration. Oversee financial planning, reporting, treasury, and tax activities. Drive finance transformation initiatives and ensure compliance.

Support and implement the Compliance Monitoring Program/System. Conduct audits and inspections in Airworthiness, Maintenance, and Management Systems. Ensure compliance with aviation legislation and industry standards. Draft and review company documentation.

Investigate and develop innovative methods for adapting, validating, and deploying foundation models in industrial automation. Focus on addressing latency, determinism, and safety constraints while ensuring compatibility with existing industrial standards.

Design Quality Engineer ensures product quality and safety by coordinating quality activities, supporting development teams, and managing certifications.

Agora Industry seeks a Project Lead Global Chemicals Transformation to develop and implement a strategy for the global chemical sector's transformation. The role involves leading research projects, coordinating policy proposals, and representing Agora to stakeholders and decision-makers.

Field Service Engineer responsible for maintenance and technical support of reverse vending machines in the Euregio and Eastern Netherlands. Ensures service quality, coordinates subcontractors, supports customers, and contributes to operational improvements.

ZeinPharma Germany GmbH seeks an IT System Administrator to develop and manage their IT infrastructure. Responsibilities include network and firewall administration, Windows Server management, Microsoft 365 tenant administration, ERP system support, endpoint management, and IT security implementation.