java English-speaking jobs in Mainz

Analyze market trends, manage technical projects, and optimize commercial operations. This role involves prospecting, maintaining HubSpot/Grafana, and translating needs between commercial and technical teams.

Working Student in Finance and Accounting to own the end-to-end invoice workflow in Moss. Responsibilities include validating, coordinating, and issuing invoices while supporting process optimization. Requires current enrollment and strong German/English skills.

TUM seeks Professors in Aerospace for Winter 2027/28 across career levels. Research areas include Quantum Space Technologies, Payload Systems, Space Applications, and Cyber-security. Roles involve research, teaching, and promoting early-career scientists.

Own a portfolio of 30 clients, serving as the primary point of contact for content creation across TikTok, Instagram, YouTube, and Facebook. Coordinate between clients and internal teams, ensuring client accountability for approvals and footage.

Lead NPD projects in EMEA for Milwaukee footwear, managing technical aspects from design to mass production. Requires technical background, project management experience, and CAD knowledge.

ESS COE Intern role involves translating and reviewing technical documents, coordinating meetings, and supporting regional technical issues. Requires a Bachelor's in Electrical Engineering or related field, and C1 level German and English.

Perform analytical tasks, develop and validate methods, and conduct GMP testing in Central Analytics. Requires 3-5 years of analytical lab experience, knowledge of GMP, and proficiency in HPLC(-MS), GC(-MS), IR, and UV.

Lead Quality Management & Regulatory Affairs for EMEA, ensuring compliance and product safety. Drive regional quality strategies, maintain QMS, and manage regulatory submissions across commercial operations.

Learning Specialist to take end-to-end ownership of the Transportation Associate Programme (TAP) learning in DTM and UK South. Responsibilities include launching content, managing training, and building quality control. Requires fluency in German and English.

Support marketing projects and events from idea to execution. Create content for LinkedIn, research opportunities, and manage logistics. Requires strong organization, attention to detail, and fluency in German and English.

Drive sales success in the DACH region by achieving ambitious sales targets and managing the full sales cycle. Engage with clients, present solutions, and secure new partnerships. Collaborate with internal teams to ensure a seamless client onboarding experience.

We are seeking a Production Controller / Plant Controller to support the operational side of the business. This role requires providing sound decision-making support through numbers and analyses.

Senior Account Manager for Google Ads to own e-commerce client relationships across the DACH region. Manage and optimize Google Ads campaigns with budgets up to €50K+. Requires 3+ years of Google Ads/PPC experience and native German skills.

Massage Experts sought for a self-care company. Role is part-time (10-30 hours/week). Requires at least one recognized massage certificate. Career changers welcome.

Working Student - Business / Founder's Associate drives commercial execution and growth testing. Responsibilities include GTM execution, outbound sales, and partnering with founders on strategic projects. Requires a university student fluent in German.

Lead clinical trial initiation as a Study Start Up Associate, managing site start-up and activation activities. Requires 2+ years of clinical research experience and knowledge of essential documents.

Chair of History and Ethics of Medicine role requires representing the subject in research and teaching. Responsibilities include investigating medical practice ethics and history, and teaching on the Human Medicine degree program.

Develop and implement ML & AI solutions on the Data and AI Platform using Databricks and Foundry. Support platform customers with technical ML/AI aspects, ensuring security and compliance. Requires 3+ years experience on Databricks.

Scientist to advance crop nutrition product development, focusing on high-efficiency P and N fertilizers. Requires Master's degree plus experience in crop nutrition or soil science.

Senior AI Data Scientist to build agentic systems for end-to-end HR process streamlining across multiple countries. Focus is on building robust, trustworthy, autonomous systems, not just predictive models. Requires 7+ years in ML systems and production experience.