java English-speaking jobs in Mainz

Co-CEO of a growing German financial services platform. Responsibilities include owning the end-to-end deal cycle, developing M&A strategy, and acting as the public face to SME founders. Requires leadership in finance or M&A.

Seeking a Co-Founder/Tech Partner with AI experience to build two open-source tools: a sequential document number generator and a local knowledge database. Requires pragmatic, rapid MVP implementation and interest in shared revenue models.

Senior Product Manager for Energy at 1KOMMA5° to build and scale the Heartbeat AI platform. Define product vision, standardize energy propositions, and analyze international energy markets. Requires 4+ years in energy retail/trading.

Lead strategy and roadmap for the enterprise eHealth portfolio, owning the full product lifecycle. Define modular architectures and develop the Product Management team. Requires extensive experience in enterprise software, ideally in eHealth.

General Manager, Europe to spearhead expansion and operations for a biotech innovator. This role involves developing European strategy, building regional partnerships, and leading the European headquarters. Requires 10+ years in biotech/life sciences.

Principal Strategy & Consulting bridges business strategy, customer challenges, AI, and technology. This role develops scalable growth plays, shapes executive narratives, and builds consulting frameworks to drive client transformation.

Senior Vice President, Tax to lead German tax strategy, compliance, and advisory. Expert tax support for KVG structures and regulated investment vehicles. Oversee German tax filings, audits, and interactions with tax authorities.

Senior Product Director to lead product managers in delivering a world-class data platform. Responsibilities include defining analytics posture, data lakehouse, and governance practices. Requires 10+ years of experience, ideally with an engineering background.

Support the People Business Partner team in day-to-day operations and projects. Tasks include administrative support, content design for events, and data analysis. Requires current university enrollment and strong German and English skills.

Own the product vision and roadmap for self-filing in Germany, shaping the two-brand strategy for Taxfix and Steuerbot. Build AI-native experiences and grow beyond filing into wealth creation.

Manufacturing Engineer in Production Planning for Airbus Operations. Responsibilities include component availability, managing work orders, and ensuring quality standards. Requires aerospace engineering background and SAP skills.

Lead the oscilloscopes vertical's strategy, roadmap, and teams within Digital and Power Test Solutions. Hold P&L accountability, drive commercial growth, and manage R&D projects. Requires technical degree and senior leadership experience.

Director role in Consumer Products driving transformation and performance improvement projects. Requires 10+ years of experience, including 5+ in global consulting, with a focus on FMCG or Consumer Retail.

Join a pre-seed AI startup as a Technical Co-Founder to automate public tender processes for architecture and engineering firms. Build generation engines, reference databases, and GDPR-compliant LLM/RAG pipelines. Requires strong full-stack skills and professional German.

Support a Senior Manager in implementing strategic programs. Develop and present solutions for complex business challenges while collaborating with the Semiconductor Mask Solutions management team.

Lead global clinical operations for a growing oncology biotech, overseeing Phase II to Phase III trials. Manage CROs, build processes, and mentor a team of Clinical Operations Directors.

Head of Product to improve and refine the product, develop the product roadmap, and build a seamless customer journey in consumer health.

Sr Principal Functional Consultant, oCHRO Architect requires 10+ years in HCM software, including 5+ in implementation consulting. Must lead end-to-end HCM solution design for complex programs and be fluent in German and English.

Seeking reseller partners with customer databases or client generation capabilities. Partners will find clients needing IT systems, web applications, or ISO standards services. Two partnership options are available.

Partner Manager DACH develops and manages strategic partnerships across the DACH region to drive revenue growth. Responsibilities include expanding agency and affiliate networks and optimizing affiliate marketing strategy. Requires 3+ years of relevant experience and fluency in German and English.