java English-speaking jobs in Mainz

Principal Business Consultant in Quality Control leads complex global projects, drives strategic growth for Quality Control, and mentors consulting teams within Life Sciences. Requires 10+ years of Life Sciences Consulting experience.

Business Development Manager for the DACH region, responsible for achieving sales targets by developing new business and managing complex, multi-million dollar deals. Requires 7+ years of life sciences sales experience and technical knowledge of molecular and cell biology.

Experienced Sales, Revenue, or CS Operations Expert needed to improve workflows, data accuracy, and reporting in SaaS environments. Responsibilities include CRM configuration (Salesforce, HubSpot), managing revenue tools, and optimizing sales and customer success processes.

IT Business Specialist responsible for internal cost allocation, managing hosting business aspects, and overseeing procurement. Requires 3+ years of experience, knowledge of billing/budgeting, and excellent German/English.

Coordinate IT hardware warehouse and logistics at the Alsfeld location. Responsibilities include inventory management, device shipping, and coordinating repairs. Requires strong organization and excellent German skills.

Experienced EDI Axway TSIM Developer/Technical Lead needed for B2B integrations. Responsibilities include designing, implementing, and supporting EDI mappings, partner onboarding, and production support using Axway TSIM and SAP PO/Integration Suite.

Associate Executive Search role in Frankfurt. Drive search strategy, build senior executive relationships, and own high-stakes deliverables across the DACH region. Requires 5 years of relevant experience and fluency in English and German.

We seek a motivated IT System Administrator to support IT systems deployment and administration across Windows/Linux, networks, and cloud services. Responsibilities include user support, hardware/software management, and documentation.

Develop end-to-end features for an AI and data science platform using Java and Vue. Requires 5+ years in software development, strong full-stack skills, and experience in system architecture.

Warehouse Worker role involves unloading, lifting, scanning, sorting, and redirecting products. Requires ability to stand/walk for extended periods and lift up to 15kg. German or English skills are required.

Working Student role in Social Media, Graphic Design, and AI. Create visual content using Photoshop, After Effects, and AI tools. Develop social media posts and assist with community management. Must be studying media, design, or communication.

Performance Specialist drives continuous improvement in production units. Responsibilities include analyzing losses, implementing Lean methodologies, and supporting AM/PM initiatives to enhance operational excellence. Requires an engineering degree and manufacturing experience.

PhD Student in Computational Biology/Bioinformatics to investigate cancer biology using large-scale transcriptomic and genomic datasets. Requires MSc in related field, R/Python skills, and experience with Linux/Unix.

Leads marketing for top national restaurant and grocery partners in Germany, creating joint plans to drive awareness and orders. Manages a team of 6, developing and executing 360° partner plans across multiple channels. Collaborates with cross-functional teams to define and lead integrated marketing strategies for key partners. Monitors market trends and partner performance, optimizing campaigns for maximum impact.

Junior C#/.NET Developer for Industrial Applications. Develop software for production and logistics, integrate systems, and build interfaces. Requires C#/.NET experience, database knowledge, and German/English skills.

Business lawyer for a global manufacturing company with a focus on corporate law, contracts, compliance, M&A support, and insurance coordination.

Lead deal origination and execution for an IT services provider focused on inorganic growth across the German Mittelstand. Manage M&A end-to-end, build deal pipelines, and guide founders. Requires experience in mid-market deals, ideally in IT services, and fluency in German and English.

eCommerce Specialist needed to develop and implement e-commerce, merchandising, and growth strategy. Requires professional proficiency in Hungarian or Czech and fluent English.

Build and maintain integrations between charging infrastructure, business platforms, and partners. Develop scalable patterns, manage REST APIs, and own event-driven architectures using Azure, Kafka, and SQL.

Part-time working student role involving processing grid code standards and extracting test requirements. Responsibilities include developing C# plugins for TAP, implementing test plans, and performing verification tests. Requires C# experience and understanding of grid codes and EV charging technology.