java English-speaking jobs in Mainz

Lead product and process optimization across four cheese processing plants, including vegan alternatives. Develop and lead the optimization organization, setting strategic priorities to improve cost, quality, yield, and efficiency. Requires strong leadership and dairy technology expertise.

Design and operate the Internal Developer Platform as a product, ensuring scalable architecture and standardized tools for developers. Define platform architecture, enforce security, and drive developer experience improvement.

The Hector Research Career Development Award supports W1 Assistant Professors or junior research group leaders in natural/engineering sciences, medicine, or psychology. Applicants need a recent doctorate and aim for a full professorship or habilitation.

Head of IT Infrastructure owns the global technical backbone, including networks, cloud, and data centers. This role develops global strategy, leads regional teams, and steers infrastructure projects. Requires 10+ years in IT infrastructure with management experience.

Working Student in HR Services focusing on Compensation and Benefits. This role supports the Human Resources team, which manages recruiting, career development, training, and staffing for BCG.

Lead engineering standards, capital projects, and facility systems across Radiopharma International sites. Manage project portfolios, drive investment programs, and lead a team of Project Managers. Requires 5-10 years managing complex projects in a GMP environment with PMP certification.

Lead product strategy for Martech & Adtech, covering lifecycle communications, customer identity, personalization, and self-service. Requires senior leadership in product management with expertise in Martech ecosystems and data.

Nordson Industrial Coating Systems seeks a driven Account Manager to develop and grow customer relationships in Northern, Eastern, and North-Eastern Germany. The role involves identifying new business opportunities, building a sales pipeline, and collaborating with internal teams to support customers.

Head of Product Design to own quality, shape strategy, and lead a team of designers. Drive UX for complex, developer-facing products, lowering the learning curve while maintaining power.

Service Technician for dental treatment units and sterilization systems. Provides technical support to distributors and customers, including installation, troubleshooting, and maintenance. Requires a degree in Biomedical Engineering or related field and experience in technical support for medical devices. Fluent German and English required. Extensive travel (approx. 50%) is necessary.

Define and execute the roadmap for supply-side incentive programs. Analyze driver behavior and market dynamics to design sustainable incentive structures. Requires 5+ years of PM experience, with 2+ in marketplace/mobility domains.

Vice President, Client Coverage manages client relationships to ensure satisfaction and drive business growth. Requires 5-7 years in financial services sales/client management and fluency in German and English.

Senior Electrical Hardware Engineer to lead complex electronics development, including PCB redesign, from concept to production release. Requires deep experience in mixed-signal hardware and project ownership.

Drive growth across key European accounts as a Key Account Director. This hands-on role requires a consultative mindset, utilities industry knowledge, and a track record in complex, multi-year contract execution.

Solution Architect for Higher Education. Lead solution sales, positioning Fortinet capabilities, and driving value for university customers. Requires 8+ years in networking and 5+ years as an IT Security Consultant/Architect.

Partner to build and lead a data strategy offering across Germany and Europe. Deep expertise in data strategy, governance, management, and integration required. Proven track record leading complex data transformation programs and translating technical detail into strategic agendas. Fluency in German and English.

Drive strategic, large-scale supply chain transformation initiatives from concept to implementation. Lead end-to-end programs, build roadmaps, and manage cross-functional teams to enhance operational efficiency.

Spring Internship in Risk Management within a global asset management organization. Support daily risk monitoring, financial analysis, and international projects for investment funds. Requires study in economics, quantitative finance, or related fields.

Head of Marketplace to drive and scale the marketplace business for a leading Consumer Electronics player. Own the full P&L, build a DTC marketplace from the ground up, and collaborate with partners like Amazon, Otto, and MediaMarkt.

Experienced Direct Selling leader needed to accelerate sustainable growth across European markets. Drive revenue targets, develop sales teams, and execute global strategies locally. Requires 5+ years in Direct Selling/Network Marketing.