java English-speaking jobs in Mainz

Experienced, dynamic leader to lead teaching and learning and day-to-day operations of a thriving Kindergarten of 110 pupils. Must have a strong record of pedagogical leadership and expertise in Early Years leadership and pedagogy.

Leads the vision, strategy, and execution of the Manufacturing Industry Practice at Celonis. Responsible for building and scaling software solutions for the manufacturing industry. Collaborates with GTM, product, AI, engineering teams, and external partners. Defines the vision for the practice and translates it into a strategy and prioritized set of actions. Builds and leads a cross-functional team across Value Engineering, Sales, AI Builders. Works with customers to align manufacturing solutions with their business strategy. Identifies and packages scalable use cases across the Celonis platform. Enables internal teams and partners to help them position and deploy manufacturing solutions.

ATIA Holding seeks reseller companies to find clients needing IT systems, web applications, or ISO standard services. Partners receive 20-30% of project value or set their own price on a base price.

The Director Global Product Management, ABL800 is responsible for the strategy and global product management of the ABL800 portfolio, including product ideation, launches, and lifecycle management. The role drives the portfolio's growth and margin trajectory and reports to the Senior Director Global Product & Portfolio Management.

Leads and implements contracting strategies for solar, wind, and BESS projects across EMEA. Develops contract templates, oversees tendering and contract management, and ensures compliance with legal and financial standards. Requires 10+ years of experience in renewable energy contract management, including leading teams and handling complex construction contracts.

Lead and manage two 25hours Hotels in Frankfurt, ensuring smooth operations, guest satisfaction, and financial success. Develop revenue and F&B concepts, safeguard brand standards, and represent the properties within the hospitality scene.

The Medical Director will collaborate with internal and external experts to identify practice gaps, develop educational content, and secure grant funding. Responsibilities include creating educational materials, managing projects, and presenting program ideas to external teams.

The Business Development Director – Commercial Outsourcing (DACH) drives new business growth for pharmaceutical and biotechnology clients in Germany, Austria, and Switzerland. The role focuses on selling outsourced commercial solutions and acts as a senior commercial partner to clients.

North Vector Dynamics seeks a part-time European Sales and Partnerships leader to develop the European market for defense technology. The role involves managing the full sales cycle, building strategic partnerships, and engaging with defense ministries and prime contractors. Requires 5-10 years of experience in defense or government sales in European markets with a proven track record of closing complex deals.

As People Experience Partner, you will design and improve the employee journey, boost engagement, and shape a positive workplace culture. You will lead belonging initiatives, manage global milestone programs, and act as a culture ambassador.

This role involves leading the strategic direction for AI-powered search and decision support within Thieme's product portfolio. Responsibilities include shaping the vision for intelligent search and chat, owning the full lifecycle of AI-driven search development, and collaborating with product leads to translate user needs into technical roadmaps. The ideal candidate will have experience as a Tech Lead or Senior Engineer with direct product responsibility, expertise in search technologies, and strong leadership skills.

Lead the technology agenda for a European intralogistics group, developing and implementing a multi-year technology strategy. Build and professionalize a scalable engineering and software organization, driving productization and solution design.

Lead the growth and execution of CVX Ventures across existing and new markets. Build, manage, and inspire high-performing teams. Own the global strategy, from market entry to operational excellence.

Intern in the CTO Office supporting the CTO and Chief of Staff to the CTO. Assist with executive briefings, technology evaluations, and AI roadmap development.

Project A is seeking an experienced Chief Technology Officer for Andercore, a next-generation supply chain platform. The CTO will own the evolution of the company's agentic AI architecture, AI-native fintech integration, and engineering leadership. Responsibilities include designing a modular, event-driven multi-agent framework, architecting algorithmic working capital allocation, and building an engineering organization that ships with discipline and speed.

Provides administrative support for a Product & Engineering General Manager team. Creates presentations, manages correspondence, and supports strategic meetings and events. Requires a Master's degree in a relevant field and fluency in English. German is a plus.

Founding Product Engineer / CTO to build and lead the technical foundation of a new AI-powered financial assistant for people under financial stress. Architect and build the mobile product (React Native, TypeScript, Tailwind), define backend architecture, and design infrastructure for secure financial data handling. Work with the CEO to turn complex financial data into intuitive user experiences.

Lead Nunatak's Digital Strategy & Growth practice, developing and executing digitalization strategies, AI solutions, and business models for clients. Manage large projects, build high-performing teams, and contribute to the company's overall strategy.

Drive sales growth and business success by developing and executing innovative sales and partner strategies for cloud solutions in Germany. Position baramundi as a technology leader and leverage the partner network to achieve sales targets. Collaborate with marketing and product management to shape product strategy and enhance customer satisfaction.

The Regional Business Leader drives commercial success and launch strategies for SMA therapies in Germany. This role involves territory and account management, building relationships with key stakeholders, and executing sales plans.