java English-speaking jobs in Mainz

Experienced HV/LV Senior Authorised Persons are needed for a major Data Centre construction project in Europe. Responsibilities include ensuring safe operation, managing permit-to-work, and carrying out safe isolations. Proven HV/LV SAP experience is required.

Seeking experienced musicians for Protestant Music Service Support. This flexible 1099 role involves planning, coordinating, and performing music for weekly worship services and seasonal events at USAG Bavaria locations.

Director of Product to lead scaling of an AI-powered HealthTech platform. This strategic role defines product strategy, evolves the operating model, and drives measurable outcomes for a high-growth company.

Working Student in Product and Portfolio Management supports the end-to-end food supplement product lifecycle. Responsibilities include managing EU product listings, conducting market research, and monitoring SKU performance. Requires enrollment in a relevant field and fluency in English and German.

Business Development Manager for Commercial & Compact UPS in DACH. Responsible for establishing new customer relationships, identifying markets, securing sales channels, and achieving sales targets in Data & IT and Light Industrial sectors. Requires 5+ years of UPS sales experience and German/English proficiency.

Chief Product Officer to own the product lever driving company vision and trajectory. Requires strong, data-driven product leadership, a customer-first mindset, and comfort with iterative development in a SaaS scale-up.

R&D Director to lead fertilizer innovation at a leading agricultural technology company. Develop next-generation crop nutrition technologies, including biostimulants and controlled-release fertilizers. Requires MSc/PhD and 5+ years of industrial R&D experience.

Continental seeks a Tax Compliance Manager to ensure adherence to German and international tax regulations. Responsibilities include developing and maintaining tax compliance strategies, managing risk reports, and coordinating with internal and external stakeholders.

Analyze psychometric, behavioral, and business data to produce evidence-based executive-assessment reports in German and English. This role involves translating psychological insights into commercial implications for global corporations.

Experienced Senior Developer or Software Architect needed to redesign a complex bank account data modification service. Responsibilities include applying DDD, transforming legacy architecture to hexagonal, and using Clean Code principles. Requires Java expertise and Event Storming skills.

IT PMO – Project Tools professional needed to drive governance and operational excellence for the Customs Transformation program. Requires expertise in project methodology frameworks and 7-10 years of experience in large-scale IT transformations.

Optimize product availability for a closed customer pool by managing preventive maintenance, repairs, and engine configuration standardization. Improve product reliability based on customer requirements and anticipate standardization campaigns.

Oversee German operations as General Manager, bridging global strategy with local execution. Steer the P&L for Germany and Austria, driving hyper-local growth and managing key stakeholder relationships.

TechOps Engineer responsible for maintaining and supporting automotive navigation system testing devices. Requires hardware maintenance skills, Linux/Unix proficiency, and experience with Python/Shell scripting. Travel across Europe is required.

Drive talent development and embed performance culture as a (Senior) HR Business Partner. Advise function heads on talent planning, organizational design, and succession planning. Lead talent calibration and manage career development processes.

Support daily HR and administrative operations for a growing international logistics company. Manage the employee lifecycle, office supplies, and administrative processes. Requires experience in HR Operations and fluency in Mandarin Chinese.

As an Investment Valuation Manager / Associate, you will provide valuation expertise for development projects, transactions, and operational assets in the renewable energy sector. You will support investment decisions, refine valuation methodologies, and ensure the quality of financial models.

Drive the technological evolution of sensor systems, focusing on robust, precise, and innovative solutions for demanding industrial inspection applications. You will translate customer and application requirements into viable system architectures, with a focus on ultrasonic technologies and state-of-the-art signal processing.

Supervise HVDC Primary & Valve Installation, including cooling systems, on large-scale projects. Ensure EHS compliance, quality control, and coordinate installation activities with subcontractors. Requires technical background and relevant experience.

Financial Sales Advisor builds long-term client relationships, providing excellent financial advice. Responsibilities include analyzing products and understanding client financial circumstances. Requires interest in finance and sales, strong communication, and fluent English.