java English-speaking jobs in Mainz

Performance Marketing Working Student to create and optimize ads across Meta, Google, and Amazon. Develop weekly reports and test hypotheses using digital marketing knowledge. Requires German B1 and English C1.

Experienced Embedded Software Developer needed for traffic management systems. Integrate in-house modules, develop application software, and debug using hardware tools. Requires C/C++ experience and knowledge of software design patterns.

Lead Engineer to own a core platform module, leading a pod of 2-4 engineers. Responsibilities include shipping complex features, guiding technical decisions, and shaping engineering culture. Requires 4-5 years of experience with JavaScript or TypeScript.

Managing Director role with overall responsibility for a company in the automotive industry. Requires a Master's degree and senior management experience, including P&L ownership and strategy execution. Must be fluent in German and English.

Product Manager for Dynamic Assortment in Quick Commerce. Own data products to transform static catalogs into adaptive, personalized experiences using ML models and experimentation. Drive growth metrics.

Experienced Director of Regulatory Affairs needed to provide strategic leadership for an in vitro diagnostics portfolio. Responsibilities include executing global regulatory strategy, supporting product development, and ensuring compliance with EU IVDR and FDA requirements.

Lead the North America G/L Accounting team, managing US and Canadian entities. Own IFRS closing processes, financial audits, and P&L reporting for senior management. Drive process improvements and SAP S/4HANA implementation.

Senior Firmware Developer to design and implement C++ application firmware on ARM Cortex-M microcontrollers using an RTOS. Focus includes credential processing (Mifare DESFire, HCE, mobile wallets) and secure system features. Requires 5+ years of embedded firmware experience.

Support the planning, execution, and optimization of Wholesale Media campaigns across European markets. Contribute to strategy, track KPIs, and drive revenue targets by analyzing data and collaborating with international teams.

Lead the Year 1 fellowship experience for 250 fellows, translating strategy into coaching and support. Manage venture coaches, execute the learning strategy, and report on results to drive continuous program improvement.

Senior Customer Training Specialist for Hugo RAS technology. Deliver technical training to surgeons and OR staff in General Surgery, Urology, and Gynaecology. Requires 5+ years in medical device/healthcare training with German and English fluency.

Marketing Manager for B2B Tech. Translate complex technical topics into engaging content, manage digital channels, coordinate conferences, and execute marketing campaigns. Requires B2B marketing experience and strong project management skills.

Business Operations Working Student to support processes, data, and internal operations for an AI-first LegalTech company. Tasks include process documentation, tool stack ownership, automation, and people ops support. Requires enrollment and fluency in English and German.

Support project communications for the 3M team, focusing on social media management, content creation, and graphic design. Assist with project management, research, and event organization. Requires university enrollment and English proficiency.

Senior Legal Counsel for Automotive (EMEA) drafts and negotiates complex semiconductor agreements with global OEMs and Tier 1 suppliers. Advises on regulatory compliance and helps shape the automotive legal function. Requires 6+ years of in-house experience.

Lead customer discovery for storefront navigation and product finding. Drive vision, roadmap, and delivery of browsing features using data, A/B testing, and AI-enabled product thinking. Requires 4+ years in e-commerce Product Owner roles.

Lead strategic IT projects, partnering with business functions to drive technology-enabled change. Manage scope, timelines, and risks while contributing hands-on to implementing applications and infrastructure solutions.

Drive technical transformation in manufacturing and quality operations by implementing automated inspection processes. Lead the design, development, and integration of automation solutions for product dimension measurement and defect inspection. Scale solutions to production, initiate process improvements, and support training on new processes and systems.

Maintenance Engineer responsible for peak performance of intralogistics systems. Duties include troubleshooting electrical/mechanical issues, preventive maintenance, and implementing improvements. Requires 7+ years of technical experience.

Drive FAIRTIQ’s growth in Central and Eastern Europe. Build trusted relationships with public transport authorities to develop long-term partnerships. Requires deep public transport sector experience and proficiency in a Slavic language plus C1 English.