java English-speaking jobs in Mainz

Controller for European Logistics & Supply Chain Finance. Responsibilities include cost controlling, budgeting, and management reporting. Requires a relevant degree, analytical skills, and proficiency in German and English.

Client Manager supports client relationships and sales within a global investment management business. Responsibilities include client contact, onboarding, cross-functional coordination, and market intelligence. Requires a degree in Finance/Business, fluent German and English, and financial services experience.

Founding AI Engineer to build multi-agent systems for construction. Focus on agent harness engineering and project memory. Requires full-stack skills in TypeScript/React and production LLM experience.

Oversee regulatory compliance for outsourcing and third-party arrangements. Coordinate risk assessments and support governance throughout the outsourcing lifecycle. Requires a degree in Law, Business, or Finance, and experience in regulated financial services.

Technical Training Specialist to deliver product training, support sales, and build education partnerships in Germany. Requires HVAC/R experience, technical training delivery, and fluency in German and English.

Experienced SAP S/4HANA Program Director to lead complex, multi-country global transformation programs. Own end-to-end delivery, governance, and stakeholder alignment across SAP initiatives.

Finance Manager for a Private Equity-backed software company. Responsibilities include financial reporting, tax compliance, and business partnering across three countries. Requires 7+ years of experience and German GAAP knowledge.

Technical Management Engineer provides Level 2 service support, assists L1 teams with escalations, and supports L1 training. Responsibilities include technical support, training, and managing regional issues. Requires a technical background and 3+ years in technical support.

Founding Product Designer to shape the user experience of an AI-native B2B SaaS platform. Lead product discovery, design AI-native workflows, and take ideas through to delivery. Collaborate with founders, engineering, and early customers to achieve Product-Market Fit.

Private Assets Distribution Specialist will expand Candriam's private assets offering across Germany and Austria. The role involves developing client relationships, originating business opportunities, and supporting fundraising activities in collaboration with the local Sales team.

Expert Quantity Surveyor supports Subcontracting Management across the project lifecycle. Responsibilities include estimating costs from drawings, preparing BoQs, and verifying subcontractor payments using digital tools. Requires a relevant degree and five years of experience.

This role owns and governs end-to-end global planning processes, including Demand, Supply, and S&OP. The GPO drives process harmonization, supports planning transformation, and acts as the business owner for future planning technology, specifically o9 Solutions.

Senior Application Engineer develops and codes complex digital test programs for High-Performance Computing. Requires 5 years of semiconductor test development experience and expertise with ATE platforms like V93K or SmarTest.

Senior Project Development Lead will manage large-scale battery energy storage projects through development, focusing on grid connection, permitting, and stakeholder engagement.

Airfreight Supervisor develops the airfreight marketplace by focusing on Operations, Finances, Sales, People, Systems, and Culture. Responsibilities include managing the department's business plan, improving efficiency, and maintaining vendor relationships.

Senior Quality/Test Engineer for a cloud-based project in an Agile Release Train. Responsibilities include end-to-end test coordination, strategy development, and supporting manual, automated, load, and performance testing. Requires 5+ years of senior experience.

Amazon Warehouse Team Member role involves unloading, lifting, and transporting products, as well as scanning and sorting packages. Candidates must be 18+, comfortable standing/walking, and proficient in German and/or English.

Experienced Mechanical Engineer needed as Chief Engineer for a leading industrial manufacturer. This technical, site-based role ensures engineering excellence across manufacturing, production, and maintenance operations. Requires expertise in heavy industry and fluent German/English.

Experienced Product Designers and UX/UI Designers are needed for AI evaluation and training projects. Responsibilities include designing prototypes, developing evaluation frameworks, and assessing AI-generated design deliverables.

Lead a team of engineers, architecting and scaling event-driven cloud infrastructure. Contribute to code, mentor engineers, and translate business goals into technical objectives. Possess deep technical fluency in Node.js/TypeScript or C++, Python, and cloud architectures (AWS).