java English-speaking jobs in Mainz

As Teamleader Service, you will manage a global service team, focusing on steam turbines and turbomachinery. You will develop the AGT service business, ensuring customer satisfaction and commercial success. You will lead and develop the team, safeguard service processes, and analyze markets to improve service quality.

Marketing Manager responsible for global brand management of CAZAL Eyewear. Manages campaigns, channels, budgets, and implements creative ideas. Requires several years of marketing experience, international campaign experience, and digital channel expertise.

Leads global accounting for Daimler Truck Group, ensuring compliant and timely financial reporting. Responsible for external financial reporting, compliance with accounting principles, and leading a global team of 200+. Requires extensive experience in IFRS, local accounting standards, and financial process transformation.

Medical Affairs Lead for a MedTech organization. Act as a scientific expert for the product portfolio, engaging with healthcare professionals and contributing to medical strategy. Experience in Medical Affairs within MedTech and background in medical devices required.

As Manager Market Access, you will lead multiple projects, teams, and client relationships, ensuring project delivery excellence and driving strategic problem-solving. You will represent the company externally, manage delivery teams, and contribute to organizational strategy.

Executive Search Consultant to build and scale a new Frankfurt office for a boutique firm specializing in private equity-backed businesses. Focus on retained C-suite mandates, managing full lifecycle searches, and developing client relationships. Requires 5-9 years recruitment experience, ideally in private equity, with proven C-level search delivery and strong business development skills. Native or C2-level German and business fluent English are essential.

The Forest Stewardship Council seeks a General Counsel to lead its Legal & Compliance unit, transforming it into a globally integrated, business-oriented capability. The role requires strategic legal and compliance leadership, global oversight, and the ability to restructure and modernize the legal function. The General Counsel will provide legal guidance to the Director General and C-suite, manage external counsel, and ensure legal compliance across FSC International entities.

Manage the accounting function, including financial statements and acting as the main contact for audits. Supervise bookkeeping and require a strong accounting background, leadership experience, and fluency in German and English.

Technical Lead – Integration Systems will design, manage, and optimize integration platforms. Responsibilities include ensuring system availability, performance, and security, troubleshooting incidents, and collaborating with teams on automation initiatives.

Lead and manage technology-driven mechanical engineering projects, ensuring on-time, on-budget delivery. Manage project scope, cost, timeline, and quality while acting as the main point of contact for stakeholders.

Site Manager for German HVDC cable projects. Coordinate site superintendents, act as customer and third-party point of contact, oversee pre-installation and installation activities, and manage contractual requirements.

Experienced General Counsel to lead legal strategy, operations, and processes for a global SaaS company. Provide legal counsel to leadership, manage commercial contracts, and oversee key legal areas including data privacy, IP, and employment. Lead and develop a high-performing legal team. Must have 15+ years of post-qualification experience, European legal qualification, and experience with B2B SaaS, data protection, and international expansion.

Senior Data Scientist with 5+ years' experience in analytics and statistics. Focus on applied statistics, Python, SQL, and modern data warehouses. Drive BI, data quality, and the evolution of the data warehouse environment.

Wet lab technician to perform routine tasks including cell culture, staining, and sample preparation. Support tissue processing, imaging, and animal work. Execute experiments according to SOPs and document work in ELNs. Bachelor's or Master's degree in biology, biotechnology, or related field required. Experience with FACS and animal handling is a plus.

The Venture Capital Investor Accelerator is an 11-week apprenticeship-style program providing structured training and hands-on experience in deal sourcing, due diligence, portfolio support, and fund strategy.

Develop innovative medical devices in an interdisciplinary team. Analyze optical workflows, derive technical system requirements, and develop system concepts. Plan and coordinate technology projects, collaborate with partners, and generate intellectual property.

Design, develop, and maintain backend services using Kotlin. Build and evolve scalable, event-driven systems that process, validate, and expose financial data. Collaborate with the Product Owner and Finance stakeholders to translate business requirements into robust technical solutions.

Procurement Specialist supporting client procurement in a fast-paced environment. Responsibilities include sourcing supplies, creating quotes and purchase orders, monitoring orders, and reporting on procurement activities. Fluency in German and English, proficiency in Microsoft Office and ERP systems required.

Experienced HR Business Partner to support the German sales organization of a fast-growing Chinese NEV company. Lead recruitment, workforce planning, and employee lifecycle management. Ensure compliance with German labor law.

Manage the full recruitment process, onboarding, and offboarding. Maintain personnel files, advise on HR policies, and coordinate employee development programs.