java English-speaking jobs in Mainz

As a Senior Commodity Buyer, you will develop and execute commodity strategies, manage supplier relationships, negotiate contracts, and drive cost reduction initiatives.

Develops and optimizes vulnerability and exposure management capabilities. Operates and enhances Tenable-based security tools. Analyzes vulnerabilities and implements remediation strategies. Leads penetration testing activities across various environments. Collaborates with teams to support risk prioritization and security implementation.

1 Bidding Options A single company may bid for this Statement of Work by proposing a candidate to deliver the scope of works outlined in Section 3 and who meets the required qualifications outlined in Section 8 (Qualifications). The Contractor shall provide one (1) qualified personnel to deliver the services described in this Statement of Work.

Expert in IFRS accounting and reporting, with a focus on IAS 12/income taxes, sought for Home Comfort Finance team. Responsibilities include ensuring high-quality, compliant, and timely group reporting, monitoring IFRS changes, and collaborating with internal and external stakeholders. Requires several years of relevant experience, strong knowledge of IFRS standards, and proficiency in SAP FI and MS Office.

Working student position in Finance, focusing on Controlling in a B2B environment. Support business performance analysis, report development, and operational activities. Coordinate weekly reporting for EMEA Management Team and assist with budget, forecast, and monthly closing processes.

Research Assistant will develop data management systems for large, multidimensional datasets in the aerospace sector. Responsibilities include researching data management methods, performance-oriented programming, database implementations, and software development in complex computer architectures.

Leads More in Common's global and multi-country programs, developing, coordinating, and advancing initiatives that create value through cross-country collaboration. Responsibilities include program development and delivery, external representation and global partnerships, global fundraising, program quality and impact, knowledge management, and network participation. Requires a track record of designing and managing complex projects across multiple geographies, experience in external representation at a senior level, fluency in English and at least one other language, and significant leadership experience in an international organization.

Conduct onboard inspections of ship structures, identify corrosion, and prepare reports with corrective action recommendations. Deliver training on paint application techniques and coating inspection. Support shipboard management in developing paint maintenance plans and promote fleet-wide coating standards.

Inbound Sales Representative will manage the full sales cycle for SumUp products, engaging with merchants in the DACH region. The role requires fluency in German (C1+) and English, proven sales experience, and the ability to build customer relationships.

Thursday seeks an extroverted and organized Host to plan and execute weekly events in Hamburg, promoting the brand and connecting singles. Hosts will find and book venues, manage local social media, and create a vibrant atmosphere at events.

Process and monitor outstanding receivables, communicate with debtors, and provide expert advice.

Social Media Manager & Copywriter needed to manage and publish content across all social media platforms. Write engaging copy, plan and distribute newsletters, and coordinate blog articles. Must have native-like German, 1+ year of experience in social media management, content marketing, or copywriting, and excellent written German.

The Project Manager leads pre-construction phases of hyperscale data center projects across EMEA, ensuring projects are fully defined, cost-planned, and de-risked before construction. Responsibilities include leading project governance, communication, and stakeholder management, defining scope, budget, and program, and coordinating site due diligence, design development, and procurement. The role requires 8+ years of experience in data center, critical infrastructure, or complex real estate development projects, strong understanding of construction across EMEA, and proficiency with scheduling/programming software.

Experienced Construction Supervisor needed for brownfield projects in an operating production environment. Oversee site activities, coordinate contractors, and ensure safety compliance. Minimum 10 years of experience in industrial construction supervision required.

Manage all aspects of travel for clients, providing support, consulting, and advising on travel solutions. Utilize GDS, particularly Sabre, and Freshdesk. Ensure client travel policies are adhered to and SLA's and KPI's are consistently met.

The Cyber Security Analyst supports the confidentiality, integrity, and availability of Yogi's information systems across European operations. Responsibilities include monitoring security alerts, administering security controls, investigating security issues, and contributing to compliance with ISO 27001, NIS2, and GDPR.

Oversees the operation and maintenance of electrical and mechanical infrastructure for Amazon Web Services (AWS) Data Centers. Responsibilities include ensuring safety standards, troubleshooting equipment, and supervising maintenance activities. Requires knowledge of electrical competencies and theory, and experience in data center engineering is preferred.

Lead the IT function across PEAC Solutions Europe, overseeing five teams and 50+ employees. Own and optimize core SAP platforms, drive digital transformation initiatives, and ensure secure, compliant IT operations. Partner with executive management and stakeholders on IT investments, vendor management, and organizational development.

The Chief Technology Officer (CTO) will define the target architecture for the company's ecosystem of choice for the utility industry. The CTO will lead a small core team, shape engineering through architecture and standards, and work closely with the VP R&D. The role requires substantial experience as a CTO, Chief Architect, or similar role, with a proven track record of owning architecture for large software systems.

Sensorberg seeks a working student to support hardware operations. Responsibilities include inspecting, testing, and assembling access-control devices, identifying defects, and managing inventory.