java English-speaking jobs in Mainz

Working Student in Frontend Engineering will collaborate on real product features, design, test, and maintain components of Avelios services.

Oversee lift equipment maintenance in wind farms. Manage operations, safety compliance (GWO), and technical teams. Requires a Bachelor's in Engineering and 5+ years in heavy equipment or high-altitude servicing.

Experienced Human Resources Manager needed to drive global HR functions for a 700 FTE site. Responsibilities include advising management, managing the employee lifecycle, and ensuring compliance with labor law. Requires a relevant bachelor's degree and industrial sector experience.

Job DescriptionYOUR FUTURE EMPLOYERFrom its foundation 185 years ago as a soap and candle start-up, P&G today is a leading consumer goods company. We are home to iconic, trusted brands that touch 5 billion consumers worldwide and make life a little bit easier in small but meaningful ways.

Agency Partner drives revenue growth and product adoption for key agency partnerships. This role requires strategic leadership, data-driven insights, and building C-level relationships. Must have 7+ years in agency partnerships or related fields.

Field Service Specialist needed for a remote role in Germany. Coordinate site visits, train new hires, and conduct on-site assessments. Native German and English fluency required.

Construction Manager to supervise EPC execution for a large-scale battery storage project. Responsibilities include team building, managing BoP, civil works, procurement, and HSE. Requires experience in large energy/infrastructure EPC delivery and fluent German.

Deliver groceries to customers efficiently by e-scooter or e-bike. Maintain a focus on delivery targets and exceed them. Must be at least 18 years old with a valid work permit and driving license. Speak English or German and have a smartphone with mobile data access.

Material Clerk role involves receiving, inspecting, issuing, and returning aircraft spare parts and materials. Requires experience as a warehouse logistics specialist or similar, good English, and computer skills.

Experienced QA/QC Engineer needed to manage site quality assurance and control for process gas pipework installation. Responsibilities include coordinating walkdowns, compiling punch-lists, and ensuring compliance with project specifications. Mechanical Engineering degree or pipefitting certification is required.

Architect developer experience by building scalable, invisible platforms on Google Cloud Platform. Own GKE/Kubernetes infrastructure, weaponize CI/CD, and implement proactive security using IaC.

The Assistant Front Desk Manager provides exceptional guest service, acts as a liaison between the Guest Relations Team and hotel departments, and leads a team of 10 or more.

Research internship exploring the use of acoustic metamaterials to shape sound beams for high-resolution object detection and imaging.

General Manager overseeing European operations in Germany, Italy, and Turkey. Responsibilities include sales strategy, market expansion, team leadership, and cross-border coordination. Requires Mandarin and English fluency.

Support AI and Data Analytics projects in the financial sector by planning, organizing, and executing work packages. Design, develop, and optimize data pipelines, extract insights from datasets, and build interactive dashboards. Leverage cloud platforms and AI frameworks to engineer solutions and collaborate with teams.

Field Service Engineer specializing in Raman Microscopy to provide onsite and remote technical support, installation, maintenance, and training for advanced scientific instrumentation across Europe. Requires a relevant degree and fluency in German and English.

Regulatory Compliance Specialist to own conformity assessments and risk analysis for mechanical and industrial engineering products. Responsibilities include ensuring compliance with directives and developing technical documentation. Requires a technical degree and experience in compliance.

Research Collaboration offers access to LONA, a multimodal observational environment for neuroarts and creative health. Researchers bring protocols and analytical lenses to study expressive behavior using lab-grade signal synchronization.

Operational Buyer roles require managing day-to-day procurement, supplier relationships, and the full order cycle. Candidates need a commercial qualification, fluency in German and English, and MS Office proficiency.

The BESS Manager builds and commercializes the battery storage pipeline across Europe. This role focuses on structuring projects from development through early operations, requiring strong financial modeling and market strategy for BESS assets.