java English-speaking jobs in Mainz

IT Administrator responsible for server infrastructure, networking, endpoint management, software licensing, and procurement. Requires experience with Linux and Windows server administration, IAM solutions, and IT support.

Research Assistant to investigate and analyze high-temperature fatigue damage of cast iron using finite element methods. Responsibilities include conducting tests, evaluating data, developing models, and publishing results. Requires a degree in Physical Engineering, Mechanical Engineering, Mechanics, Physics, or a related field, knowledge of finite element methods, material mechanics, and programming skills.

Product Owner for Germany's national digital services portal. Define product vision, roadmap, and backlog. Manage requirements across multiple development teams and coordinate with federal authorities. Requires CSPO certification, 3+ years product ownership experience in a public sector context, and German C2 proficiency.

Provides excellent customer service in German to regional clients, ensuring accurate data and timely publication of financial business reports. Manages dealer registration, supports training, and resolves customer queries. Collaborates with internal teams and external clients to achieve operational efficiency and customer satisfaction.

Leads the design and execution of experimentation frameworks, including geo-based and holdout incrementality testing. Evolves the organization's Marketing Mix Modelling (MMM) capability, including model development, calibration, and translation into actionable budget allocation recommendations. Develops sophisticated statistical models such as LTV prediction, churn scoring, and audience segmentation. Architects and governs the marketing data layer, ensuring best practice across dbt modeling, data quality, and documentation. Translates complex findings into compelling strategic narratives and executive-ready recommendations. Partners with Finance (FP&A) to ensure marketing efficiency metrics, budget frameworks, and unit economics (CAC, LTV, Payback Period) are consistent with company-wide financial reporting and planning. Collaborates with Data Engineering and Marketing Technology to define and shape the long-term marketing data stack roadmap. Leads the team’s thinking on how AI tools and techniques can augment the analytics workflow.

Develop methodologies for analyzing gender-based disinformation across online platforms. Collect, process, and synthesize online text and audiovisual data. Conduct computational and qualitative content analyses of disinformation campaigns. Apply NLP methods, including embedding-based topic modeling and social network analysis.

Develop and maintain scientific relationships with thought leaders globally. Provide medical expertise to the medico-marketing team and support medical inquiries for the Merz product portfolio. Manage Key Opinion Leaders (KOLs) and provide regional medical support to distribution partners.

Manufacturing Engineer will develop, maintain, and manage manufacturing documentation and technological process standards. This role involves planning, coordinating, and monitoring manufacturing projects while designing, implementing, and improving cost-effective manufacturing technologies. The Manufacturing Engineer will analyze, support, and optimize existing production processes, specify and implement manufacturing equipment, and collaborate with global manufacturing teams.

Leads and develops a global cross-functional organization responsible for a robust, process-based Quality Management System across all GxP areas. Designs, implements, and continuously improves the QMS, ensuring compliance with global regulatory requirements. Oversees data integrity governance, computerized system validation, and quality governance initiatives. Manages cross-functional alignment and serves as the primary interface for quality system requirements with external stakeholders.

Experienced Document Controller needed for a 12-month freelance contract supporting a Battery Energy Storage System (BESS) project. Maintain document version control, track revisions, and ensure compliance with project standards. Fluent in German and English required.

Senior Legal Counsel to join a leading multinational industrial group. Draft, review, and negotiate contracts, advise on legal risks, and support cross-border projects. 8-10+ years of commercial law experience, full German legal qualification, and fluency in English and German required.

Owns legal and compliance function for German and US entities. Manages commercial contracts across the customer, partner, and supplier lifecycle. Develops and maintains information security management system and ISO 27001 certification. Acts as internal point of contact for legal and contractual questions.

Experienced Product Compliance Manager needed to manage post-market compliance events, including customer complaints, product performance issues, and field incidents. Ensure regulatory compliance and act as a liaison for national market surveillance authorities. Coordinate investigations, identify trends, and provide internal training. Requires a degree in a related field and 5+ years of experience in product compliance or regulatory affairs.

Lead Cost & Value Engineer to support a flagship offshore wind program. Develop cost models, monitor project performance, and identify value optimization opportunities. Experience in cost engineering, project controls, and large capital projects is required.

This Ocean Export Operations role offers full ownership of end-to-end processes for a stable customer base with global destinations. The role involves working with CargoWise One and includes handling some Dangerous Goods (training provided).

Develop and execute sales strategies for distributor, wholesale, and workshop levels in North Germany. Build and maintain customer relationships to achieve sales targets. Identify market opportunities and collaborate with the DACH team and European DENSO Aftermarket organization.

Plan and lead risk-based internal audits across international entities, assessing controls, governance, and processes. Evaluate compliance with policies, regulations, and standards, delivering audit reports with recommendations. Present findings to senior management and advise on risk management, controls, and process improvements. Contribute to finance and digital transformation initiatives. Strengthen the Internal Control System (ICS) and promote best practices in risk management, compliance, and fraud prevention.

Partner-level consultant with a top-tier background sought to lead strategy consulting for the chemicals industry in Germany. Proven track record of developing senior client relationships and originating opportunities is required.

Senior Cloud Architect to design, implement, and optimize hybrid cloud and on-premise architectures. Ensure infrastructure scalability, resilience, and cost-effectiveness.

Gain practical work experience as a Geology, Geosciences, or Geophysics intern at Baker Hughes. Collaborate on projects, learn internal software, and apply HS&E standards. Must be enrolled in a relevant degree program and possess strong analytical and teamwork skills.