java English-speaking jobs in Mainz

Leads all financial aspects of a €30m B2B SaaS business undergoing a transition to a scalable, recurring revenue model. Develops financial planning, forecasting, and reporting, supports SaaS model implementation, and drives commercial insight. Builds and leads a finance team, partners with Sales, Product, and Operations, and acts as a key interface to investors.

Logistics Product Manager to lead product planning for Joybuy's European supply chain. Own strategy across warehousing, delivery, and reverse logistics, driving system modernization and client solutions. Requires 5-10 years in supply chain/logistics.

In-house Legal Counsel for an international insurance group. Responsibilities include corporate and regulatory advice, competition matters, real estate transactions, and international contract negotiation. Requires a qualified lawyer with experience and fluency in German and English.

KLA, a global leader in semiconductor manufacturing technology, seeks a Local IT Site Lead to support the Jena location.

Global Tax Risk Manager will implement and enhance the global tax risk management framework. Responsibilities include identifying, assessing, and monitoring tax risks globally, leading tax reviews, and developing mitigation strategies.

Define and maintain product requirements, user stories, and release plans for air traffic control solutions. Own the product backlog and coordinate cross-functional teams. Requires 10+ years in software development and 5+ years in product leadership.

PhD Student in Translational Cancer Biology to investigate molecular mechanisms driving small cell lung cancer progression. Focus involves molecular biology, functional genomics, and analyzing multi-omics datasets. Requires a Master's in a related life science field.

Lead global inventory and material management strategy for a leading thermal management systems manufacturer. Develop global standards across planning, warehouse operations, and freight optimization. Drive supply chain efficiency and performance.

Sensory Specialist designs and executes sensory studies, trains and manages panels, and analyzes sensory data. Provides sensory expertise to Quality Control and collaborates with global teams. Requires a degree in Food Science, Sensory Science, or a related field and 2 years of experience in Sensory Science.

Senior Java Software Developer develops secure solutions for legal communication and public administration digitalization. Requires 5+ years of Java experience, expertise in Spring/Hibernate, and knowledge of cloud platforms and IT security.

Leading German commercial law firm seeks experienced partners in Financial Services, Real Estate, M&A, or IP/IT. Candidates should have an established market reputation and portable client base.

Senior Auditor (m/f/d) supports the Internal Audit unit in enhancing and protecting the organization's value by providing independent and objective audit services. Conducts risk-based audits at group companies globally, analyzes business processes, identifies risks, and develops audit programs. Documents work steps, prepares audit results, and communicates them to senior management.

Experienced (Senior) Portfolio Manager needed for Acquisition Finance at an established commercial bank. Responsibilities include credit assessment, cash flow modeling, and managing a portfolio of ~150 transactions totaling EUR 2.5bn. Requires 3+ years in acquisition finance execution.

Material Handling Assistant needed for a major industrial project. Responsibilities include controlling material flow, inventory control, and logistics coordination. Requires experience in material handling or logistics and strong organizational skills.

Seeking a German Speaking Store Sales Representative for luxury cigar retail. Requires 3+ years of experience, fluent German (C2), and functional English (B1). Duties include client advisory, sales, and operational support.

Provide technical leadership for an architecture team of software and security architects. Drive the roadmap for cloud, security, and AI-native architectures, leading legacy system modernization. Requires deep expertise in modern software architecture.

Seeking a Project Manager to lead multiple mid-term projects in software engineering and hardware collaboration. Requires extensive PM experience, strong stakeholder management, and fluency in German and English.

The Internal Audit unit seeks a Senior Auditor to conduct risk-based audits at group companies globally. The role involves analyzing business processes, identifying risks, developing audit programs, documenting findings, and communicating results to senior management.

Experienced Clinical Research Associate needed for Cell & Gene Therapy programs. Oversee clinical trials across Germany, ensuring ICH-GCP and regulatory compliance. Requires Life Sciences degree, CRA experience, and fluency in German and English.

This role owns the vision and roadmap for enterprise AI products and platforms, driving adoption of Microsoft AI technologies. The consultant bridges product strategy, AI architecture, and engineering, ensuring compliance with regulations like the EU AI Act and GDPR.