java English-speaking jobs in Mainz

Business Consultant to support Japanese companies in improving management strategies and business processes for European operations. Develop management strategies, support business process improvement, and manage project progress. Requires a Business Administration or IT degree, 5+ years of experience in sustainability, ESG, environmental, or energy consulting, and business level English.

As Associate Director Presales, you will provide leadership and strategic direction to technical sales support teams. You will ensure alignment of support activities with company objectives and sales targets. Responsibilities include developing training programs, collaborating with sales and product development, and overseeing technical documentation.

Manage and grow international affiliate partnerships, negotiate commission models, and optimize affiliate campaigns. Analyze KPIs, collaborate with cross-functional teams, and conduct market analyses to identify growth opportunities.

As Ground Segment System Architect, you will support the design, development, and implementation of the Ground Segment system for Rivada Space Networks. You will contribute to the architecture and integration of various components, including network operations, RF resource management, SDN solutions, and OSS/BSS interfaces. You will manage system requirements, define use cases, and oversee interface development across all Ground Segment components.

Head of Tax will lead the group's tax position across Germany and Europe. Responsibilities include managing the tax team, ensuring accurate tax liability calculations, and developing the intercompany charging model. The role requires experience in a scale-up company, European taxation, and financial services.

GFA seeks a Climate Change Expert with 7+ years of experience in water sector mitigation and adaptation. Expertise in GHG accounting, NDCs, and climate resilience integration is required. Experience with donor-funded projects and Central Asia is essential.

AMD is seeking a Business Planning Manager to manage global marketing funding flows and partner marketing spend. Responsibilities include budget tracking, reporting, and analysis, as well as collaborating with cross-functional teams to ensure budget accuracy and alignment.

Provides technical support for ultrasound diagnostic equipment in Germany, including troubleshooting, maintenance, and training. Requires a bachelor's degree and 3+ years of experience in ultrasound after-sales service.

Executive Consultant for leadership and organizational consulting. Designs and delivers client solutions, builds relationships, and contributes to business growth. Requires experience in executive consulting, leadership development, and assessment.

Leads strategic partnerships with software companies to optimize products with Ubuntu and Canonical software. Develops joint product roadmaps, go-to-market plans, and content. Drives Ubuntu adoption within partner accounts and advocates for its benefits.

Support Sales and Operations (S&OP) and Logistics team with supply chain reporting, data analysis, and process improvement. Collaborate with sales, category teams, and stakeholders on projects.

ATOSS is seeking a Head of Partner Management to lead and scale a global partner ecosystem. This role involves defining and executing a global partner strategy, building relationships with strategic partners, and driving sales growth. The ideal candidate has experience managing international teams, developing partnerships, and a strong understanding of the SaaS and HR technology space.

Junior High-throughput Scientist will scale up existing assays to high-throughput format, automate processes, and develop efficient data transfer systems. Requires a relevant bachelor's degree, experience with liquid handling machinery, and molecular biology techniques.

Design digital customer experiences across CRM platforms, websites, and multi-channel touchpoints. Transform customer insights into compelling creative concepts for personalized campaigns, email journeys, and web experiences. Collaborate with UX/UI designers, CRM experts, developers, and data analysts to deliver high-impact design.

Analyze and redesign a global finance and sales process, identifying automation and optimization potentials. Develop future-proof solutions using modern tools and collaborate with international teams in an English-speaking environment.

Business Support Manager for Customer Service maintains risk assessments, conducts Business Impact Analyses, and ensures proper control registration and monitoring. The role involves quality assurance, staying updated on best practices, and fostering a strong risk culture. Requires a degree, experience in Customer Service or Compliance, and fluency in English and German.

The Fraunhofer Institute for Integrated Circuits IIS seeks a Managing Director for the mioty® program. This role is responsible for global strategic development, commercialization, and ecosystem expansion of mioty®, a leading Low Power Wide Area Network (LPWAN) standard. The Managing Director will lead operational, business, partnership, and organizational activities to establish mioty® as a leading LPWAN technology.

Experienced General Manager needed for The Hoxton, Berlin opening in 2026. Responsible for the property's commercial success, guest experience, and team leadership. Must have strong hotel operations experience in the German market and a passion for delivering exceptional service.

Mindrift connects mathematicians with project-based AI opportunities. Design mathematics problems, evaluate AI solutions, and validate calculations using Python. Strong Python and English skills required.

This role focuses on inventory planning for power tools, balancing availability, stock health, and commercial goals. The Demand Planner identifies supply opportunities, manages non-standard purchasing, and analyzes sales and market data to optimize ordering strategies.