java English-speaking jobs in Mainz

Country General Manager accountable for commercial, financial, and operational performance of Berlin and Munich properties. Requires strategic leadership, revenue management expertise, and proven P&L ownership in premium hospitality.

Fractional CMO to lead marketing strategy and accelerate growth for learning programs. This senior, performance-based role requires 10+ years in marketing leadership with experience in digital acquisition, content strategy, and ROI measurement.

Strategic leadership role defining and driving the group's IT, data, and digital transformation strategy for an international financial services group. Focus is on strategy, governance, and enterprise-wide transformation.

Support the expansion of our institutional investor network across key European markets. You will work closely with senior team members to strengthen existing relationships, identify new business opportunities, and contribute to the successful fundraising of our alternative investment strategies.

Area: Faculty IV: School of Science and Technology | Job scope: part-time | Duration of employment: limited | Posting-ID: 7111 The University of Siegen is a modern university with an international orientation and a focus on interdisciplinary research.

Head of Europe leads 150 colleagues across nine countries, driving business performance and growth. This role involves full P&L responsibility, translating global strategy into regional action, and leading sales and service organizations. Native German and very good English are required.

W2 Professorship in sports- and exercise-related health and social psychology. Responsibilities include teaching, research, and academic self-administration. Requires Ph.D., expertise in health/social psychology, and experience with funded projects.

Seeking an entrepreneurial CFO to build a scalable finance organization for a growing SaaS business. Responsibilities include overseeing Finance, Accounting, and Controlling, leading planning, and supporting strategic development. Requires prior CFO experience and strong M&A knowledge.

Head of Formulation Development & CMC Strategy leads formulation and process development for advanced biologics, including ADCs. This senior role drives CMC strategy, manages global development programs, and leads technical teams.

Design and evolve architecture for large-scale distributed systems using AI foundational platforms like LangChain. Define agent interfaces, RAG strategies, and select optimal technology stacks. Requires 8-10 years in distributed systems.

Actuary (m/f/d) needed for reserving tasks under GAAP, IFRS, and Solvency II. Collaborate with entities, provide actuarial advice, and support risk management and planning. Requires a university degree in actuarial science, mathematics, or statistics, experience in reserving (ideally motor), and fluency in English.

Engineer/Scientist to support accelerator physics for BESSY III. Tasks include planning and developing injection/extraction systems, designing pulsed electromagnets, and characterizing electromagnetic fields.

TK Maxx At TJX Europe, every day brings new opportunities for growth, exploration, and achievement. You’ll be part of our vibrant team that embraces diversity, fosters collaboration, and prioritises your development.

Technical Project Manager for C&I Solar & BESS. Lead battery storage projects from contract award to commissioning, managing technical aspects, contractors, and grid connections. Requires electrical engineering background and fluent German.

Lead a Customer Success Onboarding team to ensure seamless transitions into SaaS ERP solutions for funeral homes. Develop onboarding frameworks, mentor staff, and use data to improve customer satisfaction. Requires B2B SaaS experience and fluency in English and German.

Submit your CV for consideration even if no current position is open. We review unsolicited applications to find a suitable role within our team.

Master Thesis - Uncertainty-Aware Modeling for Geo-Foundation Models Earth observation is key to tackling global challenges such as sustainable agriculture, climate change, and environmental monitoring.

Operations and Supply Chain Director for a luxury jewellery business. Oversee the end-to-end value chain including sourcing, production, inventory, and logistics. Requires experience in fine jewellery, strong commercial awareness, and German language capability.

Teach fundamental Cyber Security topics like digital forensics and malware analysis. Requires a university degree in Cyber Security or related field and practical experience. C1 English proficiency is required.

Information Security Manager to own and enhance the ISMS, ensuring ISO 27001 alignment. Drive security governance, risk management, and compliance across the organization. Requires 3+ years in info security and ISO 27001 experience.