java English-speaking jobs in Mainz

Finance Manager needed for international organization in Hamburg. Oversee financial accounting and finance operations for the German entity, manage a finance team, and ensure compliance with German GAAP and tax regulations.

This HR Generalist role encompasses the full employment cycle, including recruitment, onboarding, payroll, and benefits administration. The successful candidate will ensure compliance with company policies and legal requirements while supporting HR projects and collaborating with site leaders.

Gain practical legal experience supporting contract administration, legal documentation, and administrative tasks within a dynamic retail environment.

Site Process & Operations Support Engineer provides technical support for site operations, ensuring smooth production processes and resolving technical issues.

Senior Commercial Manager leads the strategic and operational development of a key pan-European omnichannel account, driving revenue and profit growth. Manages commercial performance, develops activation strategies, and optimizes omnichannel performance across touchpoints. Collaborates with international teams, builds strategic relationships, and identifies growth opportunities. Requires a degree in business administration, economics, or a comparable qualification, and experience in Key Account Management within the consumer goods sector. Fluency in German and English is required.

Develop, test, and maintain software systems for quantum computing research. Translate scientific concepts into robust, scalable software tools. Collaborate with researchers to integrate the flaQship toolkit into national quantum computing infrastructure.

The International Max Planck Research School on Earth System Modelling (IMPRS-ESM) offers PhD positions in interdisciplinary climate research. The program is based in Hamburg, Germany and provides structured supervision, financial support, and no tuition fees.

Leads international sales for X-ray system solutions and software for non-destructive material testing. Manages a multi-member sales team and dealers. Requires extensive knowledge of NDT and digital X-ray technology, sales experience in imaging software, and strategic market development experience.

Senior Product Manager to drive growth and optimize the customer journey across landing pages, onboarding, checkout, and more. Requires 5+ years of CRO experience, proven track record in ecommerce, and expertise in A/B testing, analytics, and UX.

The Faculty of Forest Sciences and Forest Ecology at the University of Göttingen seeks an internationally experienced researcher to prepare and submit a funding proposal for an ERC grant or the Emmy Noether programme. The three-year, fully funded position offers flexibility to work on the proposal and integrate into a collaborative research environment. Applicants must have a PhD in a relevant field and be eligible to apply for an ERC Starting Grant or the Emmy Noether Programme within two years.

Establish an independent research program in Computational RNA Biology. Develop theoretical, computational, and AI-based approaches to understand RNA function and regulation.

As an H&S Specialist, you will contribute to the implementation and continuous improvement of Encavis' health and safety management systems across its renewable energy portfolio. You will monitor and analyze H&S performance, conduct audits and inspections, provide operational support, and coordinate with stakeholders.

Freelance Site Manager / Owner's Representative needed for data center project in Frankfurt. Requires technical background (Mechanical or Electrical engineering) with experience through design stage of construction. Strong client-side delivery, project management, or site leadership experience is essential.

PhD student to develop methods and data analysis strategies for GHz speckle experiments using X-ray Photon Correlation Spectroscopy (XPCS). Will explore the application of XSVS to data analysis, simulate experiments, and participate in relevant activities.

Develop and manage international key accounts in the data center segment. Build and maintain customer relationships at the C-suite level. Co-develop and implement the central segment strategy for data centers.

Develop and own features end-to-end, from technical proposal to production deployment and ongoing maintenance. Build and evolve backend services and frontend applications using TypeScript and Java, leveraging gRPC. Collaborate cross-functionally to deliver high-value, high-reliability features.

Conduct and lead rigorous empirical research in digital transformation and digital business, aiming for publication in top journals. Teach at the Bachelor and Master levels and collaborate in an international team.

Senior Logistics Specialist will manage daily communication with European cargo stations, analyze data to identify and solve problems, and monitor supplier timeliness. Requires 3+ years of air cargo experience, training in air transport, and proficiency in English.

Supports the confidentiality, integrity, and availability of Yogi's information systems across European operations. Monitors, analyzes, and responds to security alerts, incidents, and suspicious activity. Administers and supports endpoint, identity, and access security controls. Investigates reported security issues and coordinates resolution. Contributes to ISO 27001, NIS2, and GDPR compliance activities.

The ifo Institute seeks a Postdoctoral Researcher / Economist (f/m/d) to join its Center for the Economics of Education. The three-year position, with possible extension, involves research on the economics of education, project management, mentoring doctoral candidates, and publishing research findings.