java English-speaking jobs in Mainz

Program Manager / PhD (m/f/x) - Student & Scientist Programs will inspire future founders, run programs, shape learning experiences, and bridge research, technology, and entrepreneurship. Must have a Master's degree (or equivalent) in a relevant field, startup experience, and passion for empowering others.

Senior Infrastructure Engineer needed for day-to-day infrastructure operations, incident resolution, and lifecycle management. Requires 5+ years of experience in enterprise-scale environments, Linux/Windows servers, VMware, storage, networking, and ITIL. C1/C2 English required.

Coordinates operation of the SUNDAE2 measurement system for superconducting undulator characterization. Integrates, commissions, and optimizes mechanical, electrical, and motion-control systems. Operates, maintains, and develops the SUNDAE2 Hall probe measurement system.

Working student will implement AI-powered automation processes in education, such as AI-based startup idea evaluation and automated email workflows. Collaborate with the Education team to identify automation potential and translate operational pain points into AI solutions. Support Education Operations, including process coordination, documentation, and process accompaniment.

Drives new business for Altium's platform solution. Responsible for the full sales cycle, from qualification to customer adoption. Requires strong discovery, value articulation, and pipeline management skills. Must have fluency in English and German.

Senior Research Scientist - Analytical Development supports Elanco's Technical Development organization. Responsibilities include developing analytical and dissolution methods, interpreting data, and collaborating with manufacturing and regulatory representatives. Requires a PhD with 5+ years of experience or equivalent experience in pharmaceutical development, with expertise in chromatographic, spectroscopic, and dissolution method development.

Develop and maintain SAP S/4HANA Public Cloud extensions using APIs, CDS Views, BAdIs, and SAP extension mechanisms. Design, develop, and maintain integrations between SAP S/4HANA Public Cloud and external systems. Translate business requirements into scalable technical solutions ensuring compliance with SAP Public Cloud standards.

Senior Group Controller will drive and develop central controlling processes, ensuring transparency around Head Office costs, allocations, and Group-wide reporting. Responsibilities include leading the transformation of central Group processes, planning, controlling, and reporting of central activities, and contributing to the Group's strategic objectives by establishing a robust cost controlling framework.

Shape the development of a globally aligned quality organization and support sustainable international growth. Define and drive the global quality strategy for the Thermal Solutions Business Unit, establish a unified quality framework across international manufacturing sites, and align them around shared quality objectives. Drive the digital transformation of quality management processes by implementing modern Quality Management Systems (QMS) and data-driven performance management tools. Manage global quality KPIs, lead cross-functional continuous improvement initiatives, and foster a culture of operational excellence. Collaborate with manufacturing sites and cross-functional teams to establish globally aligned quality standards and integrate new sites into the global quality framework. Ensure outstanding quality throughout the entire product lifecycle, enabling successful new product introductions, reducing scrap rates, and enhancing customer satisfaction.

International SOS seeks a Healthcare Provider Account Manager to oversee the medical provider network in Germany. This role involves managing provider relationships, ensuring compliance, and resolving issues. The ideal candidate will have experience in service delivery, account management, or program management, strong communication skills, and the ability to build relationships with medical professionals.

The Deutsche Bundesbank seeks two experts to join the Wholesale CBDC team. Responsibilities include analyzing and evaluating technological developments, designing and testing technical solutions, and developing APIs. Candidates should possess a Master's degree in business informatics/information technology or a related field, strong knowledge of blockchain/DLT, and excellent German and English communication skills.

Provides technical support for proprietary MCX solutions and platforms. Manages Linux servers, analyzes IP networks, and resolves VoIP service incidents. Collaborates with development and QA teams. Requires fluency in English and experience with Linux systems, IP networking, and SIP protocols.

Dawn Aerospace seeks a Head of Defence Sales – Germany to establish the company as a strategic partner in Germany's defence, security, and space sectors. This role will own commercial rollout in Germany, identify and pursue opportunities across various sectors, and build senior relationships with key stakeholders.

Manage end-to-end third-party relationships, including onboarding, oversight, contract governance, performance monitoring, and exit planning. Coordinate due diligence, risk assessments, and mitigation strategies. Design and implement review and control processes, translating risk findings into clear reports. Collaborate with stakeholders to strengthen third-party governance and drive continuous improvement.

Project coordinator to support senior stakeholders on projects, ensuring efficient logistics. Requires SAP system knowledge, order management, process control, logistics expertise, and documentation management skills.

Research Assistant to investigate and analyze high-temperature fatigue damage of cast iron using finite element methods. Responsibilities include conducting tests, evaluating data, developing models, and publishing results. Requires a degree in Physical Engineering, Mechanical Engineering, Mechanics, Physics, or a related field, knowledge of finite element methods, material mechanics, and programming skills.

The C-UAS Operator provides continuous monitoring and operation of NATO's Counter-Unmanned Aircraft System supporting Force Protection and Airfield Defense operations. The operator detects, identifies, classifies, and reports suspected UAS activity while maintaining situational awareness.

Senior Business Development Manager for SHEIN's sports category. Focus on supplier development, price negotiation, and market analysis to ensure competitive pricing and reliable inventory for leading sports brands. Requires 5+ years of experience in sports industry procurement, vendor management, or business development.

Deploy and support Velocity EDA-to-ATE conversion flows for semiconductor customers. Develop and optimize automated conversion methodologies for various test environments. Analyze and resolve conversion, timing, and protocol issues. Develop automation scripts and utilities using Python, Java, and related technologies. Support AI-assisted engineering workflows for pattern debug, log analysis, and conversion validation. Collaborate with engineering on feature enhancements and customer requirements.

Deployment Engineer to support the rollout of automation and robotics solutions. Responsibilities include installation, configuration, testing, and commissioning of automated systems. Coordinate on-site activities and collaborate with project teams, engineering teams, and stakeholders.