java English-speaking jobs in Mainz

Develop, integrate, and document structural and interior system requirements for Boeing aircraft seat integration. Perform analyses, verify system compliance, and evaluate supplier designs. Contribute to design process improvements and support certification activities.

Senior Sales Hunter to drive outbound sales of AI-powered hospitality SaaS across Germany. Proven track record selling POS, booking systems, or premium software to the German gastronomy sector required. Fluent German and English.

Data Warehouse Engineer needed to design, build, and maintain scalable data warehouse architectures. Responsibilities include developing ETL/ELT pipelines, optimizing query performance, and collaborating with stakeholders. Requires strong SQL skills, Python experience, and knowledge of DWH concepts and technologies.

Global Supply Chain Manager needed to develop and implement supply chain strategies, manage logistics, production planning, and inventory management. Requires 8+ years of experience in a full E2E Supply Chain role within the Biotech or Pharmaceutical industry.

Develop and implement regional logistics procurement strategy. Lead RFx processes, negotiate contracts, and manage logistics partner performance. Analyze logistics networks for optimization and mitigate risks.

Plans, publishes, and manages Instagram, Facebook, and TikTok content for the German market. Develops content themes and collaborates with influencers. Manages German mom/family communities, fosters engagement, and collects user feedback. Analyzes content performance and community growth, providing data-driven optimization suggestions.

Senior Fullstack Engineer to build and extend an AI platform that automates security reviews. Responsibilities include backend development, data flow design, consultant-facing UI development, and platform reliability. Must have 5+ years of fullstack experience with production ownership of complex software, Python and FastAPI, PostgreSQL, async programming, React and TypeScript, and production deployment experience.

Provides customer service, processes sales orders, tracks order status, and investigates issues. Collaborates with internal teams to ensure timely and accurate order fulfillment. Requires proficiency in English and German, SAP B1 knowledge, and 2+ years of customer success experience.

TechBiz Global seeks a Trainee Account Executive for a structured graduate program in B2B SaaS sales. This program offers clear career progression, with the opportunity to become a Junior Account Executive within 12 months. Responsibilities include outbound sales activities, lead qualification, and supporting the Account Executive team. Applicants should have a Bachelor's or Master's degree and strong communication skills.

Experienced SAP QM consultant needed for S/4HANA RISE implementation. Lead QM workstream activities, translate business requirements into SAP solutions, and configure core QM functionality. Strong S/4HANA and RISE with SAP experience required.

Exhibition Manager oversees planning, execution, and management of exhibitions and events. Leads and mentors the exhibition team, manages client relations, and collaborates on marketing and promotion. Ensures seamless on-site event operations and post-event evaluations. Requires a Bachelor's degree and 5+ years of experience in event management within the exhibition industry.

The Faculty of Mathematics and Physics seeks a W3 professor in Analysis to lead research, contribute to teaching, and participate in academic governance. The successful candidate will be an international leader in Analysis with a strong publication record and the ability to shape the institute's future direction.

The Martian Mindset Cluster of Excellence invites applications for two independent postdoctoral research positions. Successful candidates will lead independent research projects with full scientific and budgetary autonomy. Applicants must have a PhD (or proof of imminent completion) in any field relevant to The Martian Mindset and a convincing 3-year research program.

Supports team building forecasting models and implements data solutions (pipelines, orchestration, storage, interfaces). Analyzes data issues and supports short-term forecasting and process monitoring.

Administers administrative tasks and documentation processing for a department, ensuring timely and quality outcomes. Manages internal information flow, prepares documents and reports, and supports data collection. Requires 2+ years of experience as an administrative technician and fluency in the local language.

Expert in Ultra Fresh (UF) business with a broad perspective and advanced knowledge of wholesale principles and processes. Analyzes existing UF processes, develops country-specific strategies, and supports METRO countries in operational UF implementation.

The German Cancer Research Center (DKFZ) seeks a Scientific Solution Architect to design and build the technical foundations of the MEDAL platform, a global benchmark for medical imaging AI. Responsibilities include conceptualizing secure workflows for data submission, defining architectural concepts for the benchmarking platform, and translating scientific and regulatory requirements into technical concepts.

Global SAP HRIS Manager to oversee planning, development, and management of SAP SuccessFactors and related HR technology. Responsible for process standardization, system lifecycle activities, and ensuring compliance with regulations. Leads HRIS operations, service management, project and change management, vendor and stakeholder management, and digital technology strategy. Requires 5+ years of experience with SAP HRIS, including Recruiting, Onboarding, Employee Central, Talent Management, Goals & Performance, Development, Learning, and Compensation modules. Fluent English required.

Support global rollout of mindfulness programs and engagement of mindfulness communities at SAP. Tasks include program management, training coordination, administration, reporting, and communication.

Supports business development activities and customer inquiries through professional customer service, quotation processing, and administrative sales support.