java English-speaking jobs in Mainz

Freelance Asset Integrity Consultant to strengthen asset integrity programs and improve risk management in complex industrial environments. Requires expertise in asset integrity, coaching, and driving organizational change. German and English fluency is mandatory.

Senior Backend Engineer to build the core of logistics operations using event-driven microservices. Responsibilities include designing rate management, optimizing shipment matching, and automating nomination processes. Requires expertise in Node.js, TypeScript, and distributed systems.

Lead technical and operational oversight for open-pit gypsum quarry operations across EMEA. Requires a degree in Mining Engineering and extensive experience in senior technical leadership roles. Must be fluent in English and German.

Drive end-to-end delivery of IS solutions enhancing business performance across Santen EMEA. Lead digital transformation projects, manage systems, and ensure GxP compliance while collaborating with global teams.

Senior Science Controller drives science controlling activities, monitoring product and project costs for financial transparency. This role manages budget planning, analyzes complex financial data, and supports strategic decision-making across the Science function.

As Senior Institutional Sales, you will acquire and cultivate institutional clients, manage mandate onboarding, and represent the company at industry events. You will contribute to the growth strategy and collaborate with the sales team.

Board-certified Psychiatrist needed to evaluate LLM reasoning on advanced cases. Develop expert diagnostic challenges and provide gold-standard answers. Requires MD/DO, active board certification, and 3+ years of independent practice.

Senior Enterprise Sales Manager for Wolt for Work. Own the end-to-end sales cycle in the enterprise market, handling prospecting, negotiation, and closing partnership agreements. Requires B2B enterprise sales experience and strong German/English communication.

Supply Chain Planner ensures optimal inventory for Milwaukee products in Europe. Responsibilities include monitoring schedules, managing stock, and planning new product introductions. Requires experience in materials management and proficiency in MRP/SAP.

Shape and execute people strategy across Germany, Netherlands, Poland, and Austria. Act as senior HR advisor to Executive Management on organizational design, workforce planning, and complex employment matters.

Lead European growth for real-time optical data relay, on-orbit compute, and hosted payload services across commercial and government sectors. Own customer relationships and strategic capture activities.

Seeking a tenured Professor of Data Science Methods in Information Systems. Candidates must have an international reputation in data science methodology and expertise in applying theory to socio-technical applications.

Join the Marketplace Team at Redcare Pharmacy. Take ownership of product approval, optimize seller performance using KPIs, and increase product visibility in the e-commerce store. Must be a student, fluent in German and English, and comfortable with data.

Finance Director for a PE-backed consumer commerce business. Modernize the finance function, ensuring integrity and compliance across accounting, tax, and customs. Lead transformation and act as a strategic business partner.

Growth Marketing Manager needed for InsurTech company. Manage user acquisition campaigns across paid media, focusing on Paid Social (Meta, TikTok). Requires 3-4 years in paid social for a B2C company or scale-up, with strong data analytics skills.

Network Support Engineer in a managed service environment. Troubleshoot network and security incidents across LAN, WAN, VPN, and firewalls. Requires strong TCP/IP, routing, and firewall experience.

Steer current and future MRO projects for Airbus Helicopters. Support business strategy, drive sales funnel activities, and identify market capture opportunities using customer feedback and fleet data. Requires 8+ years in Aerospace/Defense BD or Program Management.

This role involves transforming complex hiring and recruitment campaign data into actionable decisions for Central Europe. You will measure employer branding performance, own end-to-end candidate lifecycle analytics, and provide optimization insights. Fluency in German and English is required.

Review AI-generated content for accuracy and quality across international markets. Support customer support operations and take ownership of small automation projects. Requires strong attention to detail and fluency in English.

Coordinate Cardmarket's event participation and manage the Event Sponsorships Program. This role involves project management, event operations, and building partner relationships within the TCG community.