java English-speaking jobs in Mainz

Manages cross-functional projects for new service and feature introductions. Works with Product Management and country organizations to define, implement, and roll out product features, new destinations, products, or tools. Drives the Carbon Report development for products and supports country organizations on sustainability-related customer questions. Prepares and conducts training for sales teams on new and existing solutions and sustainability. Analyzes data for decision-making processes and analyzes competitor solutions and customer requirements to drive product development.

System Engineer needed to support deployment of customer systems, define system requirements, design architectures, and conduct integration and testing. Requires experience in system integration, technical management, Linux, scripting, networking, and security. Must have German and English language skills and be eligible for German government security clearance.

Senior M365 Services Engineer to support MS Platforms Operations with expertise in Microsoft 365 and Azure. Focus on monitoring, automation, and analytics to improve operational efficiency. Requires 3+ years of experience administering Microsoft 365 Services and expert knowledge of Microsoft 365 products and other Microsoft Cloud Services. Fluency in English is required.

The incumbent serves as a senior Transportation Assistant providing traffic management services for international shipments of DoD Personal Property. Responsibilities include analyzing movement options, selecting carriers and routings, issuing documentation, and monitoring shipments. Must be proficient in TOPS automation, regulations, and customer entitlements. Requires a German driver's license class B, office automation skills, and fluency in English and German (C1 level).

Provides administrative and operational support to a global team, including scheduling, event planning, and onboarding. Manages financial processes, including invoices, purchase orders, and tax-related activities. Requires 2+ years of experience in a fast-paced environment with proficiency in Microsoft Office Suite and a collaborative mindset.

As a Managing Partner, you will lead the strategic relationship with a key Utilities customer, driving deep, value-driven partnerships and delivering measurable business outcomes. You will define and execute a strategic roadmap, orchestrate cross-functional teams, and leverage SAP solutions and partner ecosystem to achieve customer success.

HHL Leipzig Graduate School of Management seeks a research-oriented professor to strengthen its entrepreneurship and technology transformation profile. The successful candidate will have a distinguished academic track record in internationally recognized research, experience in teaching at the graduate level, and a history of knowledge transfer activities.

Working Student will support Sourcing managers, Legal, and other departments in preparing Supply Agreements for EPC projects. Responsibilities include contract negotiation, supplier prequalification, and contract management system updates.

Document Controller needed for a major data center project in Frankfurt, Germany. This role ensures project documentation adheres to company standards and the Integrated Management System (IMS). Responsibilities include document distribution, tracking, register maintenance, data analysis, reporting, and liaising with stakeholders. Minimum 2 years' experience in a similar site-based role is required.

Accountant Analyst to support financial operations across a growing portfolio of software companies. Combines hands-on accounting with analytical responsibilities to ensure accurate financial reporting and consistent processes. Collaborates with Portfolio Finance Team, Managing Directors, and cross-functional colleagues.

Provide customer service support via phone, email, and chat to Dutch-speaking customers. Process orders, manage customer accounts, and handle returns, exchanges, and repairs.

Buyer (m/f/d) Transport & Logistics Services for Airbus. Manages end-to-end procurement for transport and logistics service providers. Supports the deployment of the Airbus Procurement Market Segment Sourcing Strategy. Performs market intelligence evaluation, manages call-for-tenders, and negotiates contracts. Supports Multi-functional / Multi-divisional Teams through the contract lifecycle. Establishes and manages relationships with service providers. Supports projects advancing Airbus' strategic roadmaps in sustainability, supply chain resilience, competitiveness, digitalization, and innovation.

Working Student supports the Group Risk department of E.ON SE by analyzing and developing processes for Enterprise Risk Management. The role involves contributing to quarterly presentations for Top Management and supporting the operational day-to-day business.

Regional Sales Manager to lead OEM sales in Germany, focusing on Aerospace & Defense sectors. Develop and execute sales strategies to achieve growth targets and secure new business. Requires 5+ years of sales experience in Aerospace & Defense, technical background preferred.

Technical Building Equipment Engineer sought for Hamburg location. Requires degree in Computer Science, Business Informatics, or equivalent. Knowledge of Business Continuity Management, IT Service Continuity, and disaster recovery concepts is essential. Proficiency in process management and reporting tools is required.

We seek a CEO / Managing Director for an established industrial business in Nordenham, Germany. The successful candidate will lead all aspects of the business, including operational delivery, commercial performance, and stakeholder engagement. Requires proven CEO/MD experience, fluency in German and English, and deep experience in industrial health and safety.

Regional Marketing Communications Manager responsible for activating Megger's marketing strategy in the region. Focuses on event management, channel partner marketing, regional market activation, and reporting. Requires experience in B2B marketing, event management, and channel partner programs. Native German and professional English required.

Working student supporting treasury operations including data maintenance, liquidity planning, reporting, process optimization, and master data management. Assists in system enhancements and collaborates with finance teams. Requires a current enrollment in a relevant degree program, proficiency in MS Office, and strong analytical and communication skills.

Lead the IT Finance & Controlling Applications Team, providing technical leadership and managing a virtually extended team. Serve as the IT business partner for worldwide FI & CO departments.

Execute and maintain platform-wide automation and configuration-as-code practices. Develop and improve platform automation runbooks, build reusable service configuration templates, and maintain test tenants. Collaborate with platform teams to standardize configuration formats and execution practices. Troubleshoot automation failures and track configuration drift.