java English-speaking jobs in Mainz

Intern will support the planning and execution of internal communication initiatives and engagement campaigns. Responsibilities include creating content, coordinating photography and video production, and supporting management presentations.

Founding Engineer to build and scale a data platform integrating AI into B2B customer workflows. Deep Python expertise and experience with AI integration patterns (RAG, MCP) required. Lead technical architecture, infrastructure, and future team growth.

Develop and code complex ABAP programs for SAP EWM, including RF screens, PPF, enhancements, CIF, EEWB, and Monitor Enhancement. Apply OSS notes and SAP ASAP methodology. Design, develop, and code complex programs, analyze problems, and document solutions. Work independently and collaboratively on projects, training users and establishing effective working relationships.

Provides on-site IT support for desktops, laptops, and peripherals. Performs hardware and software installations, troubleshooting, and maintenance. Handles IMAC activities, asset tracking, and vendor coordination. Supports Office 365, printer setup, and conference room technologies. Ensures adherence to SLAs and documents support activities.

This part-time SAP Marketing Associate role supports marketing campaigns in Germany and Europe. Responsibilities include creating marketing content, managing social media, supporting lead generation, and researching market opportunities. German language proficiency is required.

Senior Fullstack Developer with experience in software development, ideally GO and AWS, and exposure to AI technologies. Must be willing to travel to the Berlin office every 3 weeks. B2+ German required.

Lead and develop a global team of SAP Functional Consultants, ensuring successful delivery of international SAP implementation projects. Manage project scope, schedule, and customer expectations while collaborating with cross-functional teams.

Lead AI Engineer to design, build, and deploy production-grade AI applications and platforms. Develop agentic AI systems, LLMs, and autonomous workflows. Collaborate with founders and technical leadership to shape the company's AI ecosystem. Strong commercial experience building AI solutions and hands-on experience with LLMs and modern AI frameworks required.

Handles full-cycle customs declaration and clearance for import and export goods. Reviews and organizes customs documents to ensure accuracy and compliance. Liaises with customs brokers, freight forwarders, and authorities to resolve clearance issues.

Lead a team of software engineers developing complex software systems for AI-driven medical devices. Drive software architecture, design, and development while ensuring alignment with medical device standards.

Lead the wellness, spa, and recreation operation of a prestigious Berlin luxury hotel. Manage teams, drive revenue, and ensure exceptional guest experiences.

Product Leader to own end-to-end outcomes for Freecash, Almedia's product rewarding users for engaging with advertisers. Develop and execute product strategy, prioritize ruthlessly, and drive data-informed decisions. Proven track record in consumer product development and a founder mindset are essential.

Lead the global marketing strategy and execution for a rapidly growing SaaS company. Own a €1.5M+ marketing budget and drive performance marketing across international markets. Build a brand and content engine to complement performance-driven growth. Scale the marketing team and define ICPs and audience strategies.

Leads Quality Control and Assurance activities for an ophthalmology-focused medical device manufacturer. Manages a team of five, ensuring compliance with MDR regulations and driving continuous improvement. Requires a degree in a scientific discipline and experience in a regulated manufacturing environment.

Experienced MEP Estimator needed for data center projects (€200m - €500m) in Germany. Prepare tenders, cost plans, and manage risk register. Data center experience and CostX proficiency preferred.

Lead global Information Security Management System (ISMS) and drive information security governance across the organization. Own and improve the ISMS in line with ISO 27001, engage stakeholders, and deliver security awareness initiatives.

Experienced brand manager to lead OTC pharmaceutical brands in the German market. Develop and execute brand strategy, marketing campaigns, and optimize commercial performance. Lead a team of brand managers and collaborate cross-functionally.

Brand Designer to develop and maintain visual brand identity for the BAADER Group. Responsibilities include creating marketing assets, managing design templates, and ensuring brand consistency across all touchpoints. Requires a degree in communication or graphic design and 3+ years of brand design experience. Fluency in German and English is required.

The Energy Marshal oversees hazardous energy control and isolation activities in data center construction and commissioning projects. Ensures compliance with legislation, industry standards, and project procedures. Provides independent assurance and support to Authorising Energy Marshals, contractors, and operations representatives.

Assembly/Repair Technician will assemble mechanical and electrical sub-assemblies and devices, commission and test them, and troubleshoot and repair electronic assemblies. Requires professional experience in assembly of electronic sub-assemblies, proficiency in SMD and THT soldering techniques, and basic knowledge of English, MS Office, and SAP.