java English-speaking jobs in Mainz

Develop fullstack components using Node.js and TypeScript to deliver scalable products. Design features, take ownership of architectural decisions, and optimize applications. Experience in fullstack development, TypeScript, and Node.js is required.

Finance Project Manager to lead and deliver finance-related projects, including process optimization, system implementations, and compliance initiatives.

The DLR Institute of Technical Thermodynamics seeks a Master's student to analyze the techno-economic potential of Sustainable Aviation Fuels (SAF) production within Power-to-X (PtX) concepts. The student will simulate and optimize SAF synthesis, extend an existing techno-economic methodology, and conduct sensitivity analyses to identify factors influencing process profitability and sustainability.

Connect clients with experts as a Client Services Associate. Responsibilities include understanding client needs, sourcing and onboarding experts, and ensuring exceptional client experiences. Fluency in English and at least one of the following languages is required: German, French, or Italian.

Develop and run system simulations for data center cooling solutions. Translate simulation insights into design improvements and drive model-based development. Collaborate across teams to connect simulation specialists with data center experts.

We're recruiting a final senior operator for our five-person core ops team who gets their hands dirty, builds processes, and enables us to scale. We are looking for someone with the grit to build a €100M vertical from scratch. Aufgaben Your First Week at Buena Monday morning. "Here's your laptop. I've assigned you a Linear project, everything you need to get started.

Engineer for Mechanical Ground Support Equipment (m/f/d) needed for a 24-month temporary position in Bremen. Responsibilities include identifying MGSE requirements, developing specifications, presenting concepts, and managing supplier relationships. Requires a degree in mechanics, aerospace engineering, physics, or a related field, along with knowledge of mechanics, mechanical integration, and aerospace standards.

The Consumer Lending Product & Pricing Manager will manage the strategic direction of lending products, optimizing volumes and margins. This role requires a deep understanding of the German consumer lending market and experience in product and pricing management.

Senior Project Manager to lead complex construction projects in the venue, theatre, and leisure sectors. Experience with FIDIC and/or VOB contract frameworks and fluency in German required.

AI Specialist to design, build, and deploy AI-powered solutions for content creation and management across multiple channels using Microsoft Azure AI services.

Leads emergency governance initiatives, designs risk response mechanisms, and manages high-risk operations. Manages training programs and collaborates cross-functionally to enhance compliance and risk resilience. Requires 3-5 years of experience in risk control, supply chain management, or related fields. Fluent in Chinese and English.

Operations Coordinator to support daily management of global dry bulk vessel operations (Handysize to Capesize). Manage post-fixture operations, voyage planning, and bunkering. Support chartering and general office tasks. Degree in maritime studies, shipping, logistics, or related field required. Fluent English, German a plus.

The Threat Intelligence Specialist safeguards Deutsche Börse Group's global operations against cyber threats. This role collects, analyzes, and delivers actionable intelligence to guide business decisions and reduce risk. The expert collaborates with Security Operations, Incident Response, Data Protection, and Risk Management teams.

This apprenticeship offers training in international cuisine, including restaurant and event space preparation. Successful candidates will alternate between on-the-job training and vocational school. Applicants should have a vocational diploma and experience in the restaurant or hotel industry.

Medical Science Liaison with Haematology experience needed for a global pharmaceutical company. Develop relationships with healthcare professionals and internal/external stakeholders. Provide clinical and scientific expertise in AML and support medical strategies.

HR Business Partner will support a specific organizational unit, advising managers on labor law, implementing HR processes, and supporting business needs.

Warehouse Clerk (m/f/d) needed in Estorf. Assist with goods receipt, inspection, storage, order picking, packing, inventory checks, and operating warehouse equipment. Forklift training provided.

Junior Computational Scientist to analyze microbiome data from clinical trials and support product development. Develop bioinformatics pipelines and contribute to novel analytical approaches. Collaborate with cross-functional teams and communicate results to technical and non-technical stakeholders.

International SOS seeks a Registered General Nurse to provide in-person patient support and coordinate medical updates for U.S. military beneficiaries in European hospitals.

Senior Analyst to design, evolve, and maintain group-wide price forecasting methodologies and standards. Responsibilities include model review, market analysis, curve quality monitoring, and stakeholder management. Requires a Master's degree in a quantitative field, 5-7+ years of experience in energy markets, and strong Python and communication skills.