java English-speaking jobs in Mainz

The Vice President Procurement & Subcontracting leads the Procurement and Subcontracting Management function, driving strategy, organization development, and contract management across complex EPC/EPCM projects.

The Master Scheduler creates, maintains, and adjusts the Master Production Schedule (MPS) based on forecasts, customer orders, capacity constraints, and material availability. This role coordinates production volumes and delivery dates with various departments, analyzes capacity constraints, and supports the SIOP process.

Analyze business requirements and processes for a global industrial insurer to support digitalization. Design and maintain solutions for a modern software and system landscape.

Lead SOC engineering initiatives including automation, SIEM-ITSM integration, and threat framework mapping. Own data ingestion workflows for the SIEM system and support deceptive security technologies. Collaborate with teams to improve platform reliability and SOC effectiveness.

Provides engineering support for product transfers, ensuring compliance with Stryker procedures. Determines technical objectives, monitors progress, and analyzes equipment. Collaborates with stakeholders across Product Transfer, Operations, and Divisional partners.

Team Leader Industrialization will plan production, develop machine specifications, and implement projects. Requires technical training, project management experience, and industrial engineering experience.

Product Owner for AI-driven LNG scheduling, trading, and shipping optimization software. Responsibilities include client-facing work with LNG trading and shipping desks, understanding industry operations, and owning the full product process from concept to delivery. Requires deep LNG/commodities credibility, strong product ownership experience, and the ability to translate client feedback into buildable requirements.

Account Service Manager will develop client solutions, manage relationships, and ensure successful service delivery. Requires experience in project management, account management, or customer success, preferably in automation or SaaS. Fluency in English and Chinese is required.

As Director of Growth Marketing, EMEA, you will lead the full-funnel digital strategy across paid media, creative, analytics, social, owned media, earned media, influencer, affiliate, CRO, and SEO. You will drive customer acquisition, retention, and lifetime value, hitting revenue growth and profitability targets. You will hire, lead, and mentor a regional Growth Marketing team, developing digital growth strategies and KPIs. You will collaborate with global and EMEA teams to align campaign timelines, priorities, and messaging. You will define and lead Growth Marketing Strategy for each EMEA market, adapting global campaigns with regional nuance. You will build and maintain performance dashboards, own regional marketing reporting, and forecast performance. You will lead full-funnel performance marketing across various platforms, oversee social and influencer growth, and manage a seven-figure budget.

Office Operations Intern supporting vehicle management, scheduling, maintenance, and documentation. Also assists with general office operations and administrative tasks. Requires fluency in German and Chinese.

An energy company seeks an HSE Supervisor to implement and monitor safety, health, environment, and sustainability practices on construction sites across Germany. The role requires expertise in risk assessment, safety management, and team collaboration.

Aircraft Mechanic (m/f/d) needed for base and line maintenance, repair, and overhaul of Bombardier and Hawker-Beechcraft business jets. Responsibilities include troubleshooting, fault rectification, and documentation of work performed. Requires completed vocational training as an aircraft mechanic or comparable qualification, Cat A license is an advantage. Must have excellent English, German is a plus.

Senior Mechanical Project Lead Space (f/m/d) will lead mechanical hardware projects from proposal to delivery. Requires demonstrated history in space industry mechanical projects, 3+ years post-graduation experience, and expertise in CAD design, FEA simulation, thermal engineering, or related fields.

The Sr. Manager Office & Operations will oversee office facilities, vendor relationships, and administrative operations. Responsibilities include managing IT hardware, office equipment, and furniture, coordinating service providers, and collaborating with the US headquarters on administrative processes.

Siemens Energy seeks a Switchyard Control Engineer to design and implement control solutions for HVDC systems. Responsibilities include designing BCU-based substation control systems, implementing control software, and verifying/validating solutions. Requires a university degree in electrical engineering with a focus on energy technology and experience with SIPROTEC 5 devices, DIGSI, and CFC.

SAP Controlling Functional Expert needed for a global pharmaceutical client. 10+ years of experience in ERP delivery, preferably SAP controlling, within a global pharmaceutical or FMCG environment. Deep expertise in controlling modules: Material Ledger, Product Costing (CO-PC), Profitability Analysis (COPA), Cost & Profit Center Accounting (CO-OM), budgeting, cost allocation, and period-end closing.

Experienced operational leader needed to manage and optimize a manufacturing plant. Responsibilities include production, maintenance, quality, safety, and driving lean manufacturing principles.

Leads the organization's next-generation SAP strategy, driving cloud transformation through RISE with SAP and BTP. Manages the SAP ecosystem, including a distributed team of internal experts and external partners. Designs and executes a forward-looking SAP roadmap aligned with business and IT strategy.

Electrical Construction Manager needed for site management, coordination, and supervision. Requires 5+ years' experience, EU passport, and strong communication and organizational skills.

Part-time Client Advisor to provide personalized consultations and ensure an exclusive shopping experience at the Diamonds Factory store in Cologne.