java English-speaking jobs in Mainz

Postdoctoral researcher to develop a physics-based framework for assessing the long-term habitability of rocky exoplanets. Will advance atmospheric codes and conduct detectability analyses. Requires a completed PhD in a relevant field.

CRM Audience Specialist International will develop and manage CRM audience segmentation strategies based on customer data and behavior. This role will create data filters for paid media activities and track, analyze, and report on campaign performance. Collaboration with regional CRM Managers, Performance Marketing Managers, and other teams is essential.

The Head of Risk Management leads the evolution of the risk management framework, ensuring resilience and profitability in a dynamic energy market. This role builds and leads a team of 13 professionals, shaping risk management as a key driver of business success. The Head of Risk Management ensures robust assessment and monitoring of market, credit, liquidity, and operational risks across all commodities, products, and portfolios.

Warehouse Worker needed to support production and customer demand. Responsibilities include picking, packing, inventory management, and supporting production with components and simple tasks. Experience with warehouse management systems and MS Office required. Must have authorization to work in Germany.

Service Technician provides on-site support for the operation and maintenance of industrial fluid systems at a customer's manufacturing facility in Offenbach am Main, Germany. Responsibilities include ensuring optimal fluid condition, communicating with internal and external stakeholders, and maintaining accurate data. Requires technical training or equivalent experience, fluency in German and English, and strong customer focus.

Proactively research and identify new customers, developing personalized sales strategies for outbound lead generation. Convince potential customers of software benefits and hand them over to Account Executives.

Define, manage, and maintain spacecraft avionics and electrical system requirements. Coordinate interfaces between spacecraft equipment, electronics, software, and control systems. Support avionics architecture development and perform trade studies for equipment selection.

Application Specialist Tooling & Composer will focus on customized configuration of the ORBIS hospital information system using development tools. Responsibilities include process optimization, training, and support for service organizations.

Leads distributed electrical and mechanical Product Engineering teams within the SoC Test Supply Chain Organization. Ensures scalable, standardized, and cost-effective Product Engineering execution across an outsourced supply chain. Drives quality, cost, delivery, and new product introduction objectives.

Coordinates overseas warehouse preparation, delivery arrangements, and inventory management. Ensures timely shipment and resolves logistics issues. Requires logistics experience, strong communication, and proficiency in SAP.

HR Specialist (f/m/d) Operations & Projects will manage operational HR processes, prepare documentation and reports, and support managers and employees on HR-related topics. The role requires experience in HR generalist functions, knowledge of German labor law, and proficiency in Microsoft Office Suite.

Support campus marketing in planning and executing recruiting events for BCG in Germany and Austria. Assist with application review, database maintenance, and communication with candidates.

Quality Management and Continuous Improvement Process (CIP) Engineer responsible for quality management, incident handling, process analysis, and implementing corrective actions. Requires a degree in Industrial Engineering, Mechanical Engineering, or a comparable field and solid knowledge of CIP processes.

Fully funded PhD position in generative AI and Bayesian estimation for 3D human motion. The successful candidate will develop new methods for estimating 3D human motion, with a focus on models that respect the geometry of human joint rotations.

Analyze and develop an automated solution for thermal runs on drive machinery. Requires a student currently studying mechatronics, electrical engineering, or a similar field with experience in measurement technology, CAN bus systems, NI LabVIEW, control engineering, and drive technology.

Lead and manage the end-to-end lifecycle of AI solutions within Roland Berger's enterprise AI orchestration platform. Shape the platform roadmap, manage projects, vendors, and drive change management initiatives. Ensure AI capabilities are securely integrated into business applications while meeting governance, security, and quality standards.

Experienced Financial Accountant (m/f/d) needed for daily financial accounting activities. Responsibilities include preparing financial statements, reconciliations, VAT returns, and supporting management reporting.

SAP Vertex Consultant to design, configure, and implement tax solutions integrated with SAP. Lead projects, analyze business requirements, and configure tax determination for various SAP modules. Support system audits, compliance activities, and global template rollouts.

Outbound Sales Team Lead – Cologne Location: Cologne, Germany | Team: EU GTM – Sales | Type: Full-time, Office-first Team description Our New Markets Sales team is responsible for launching and scaling SumUp's commercial presence in new territories across Europe — and Switzerland is our next big focus.

About the role The IBM Focus Sales is responsible for driving the growth and management of the IBM portfolio through sales support, partner engagement, quoting assistance, product positioning, and operational execution. The role serves as the subject matter expert for assigned IBM technologies and works closely with sales, marketing, and presales teams to maximize business performance.