java English-speaking jobs in Mainz

Manages daily international logistics, covering warehousing, inventory, transportation, and distribution. Coordinates with internal/external partners, manages 3PL providers, and handles operational exceptions. Requires trade knowledge, English proficiency, and logistics experience.

Lead a high-performing engineering team developing advanced RF/mmWave IC and SiP technologies for AI, 5G/6G, and automotive applications. Drive technical execution and strategic R&D across InP, GaAs, GaN, and SiGe platforms.

Senior Software GUI Engineer for Embedded Systems. Develop, implement, and test software for medical products, focusing on innovative solutions meeting regulatory requirements. Requires 5+ years in GUI software engineering in the embedded field.

Experienced Health & Safety Lead needed for a major data centre project. Responsibilities include driving H&S strategy, leading safety discussions, audits, and engagement. Requires strong construction/data centre H&S experience and EU work authorization.

Build and deploy quantitative models for real operations problems, bridging the gap between customer planning and machine computation. Own the model end-to-end, from messy data to production use.

Electronics Engineer/Technician joins the Vacuum Group to integrate components into vacuum control systems. Responsibilities include design, procurement, installation, and troubleshooting electronic installations.

Experienced, commercially minded Legal Counsel needed to support procurement, supply chain, and commercial operations. Responsibilities include negotiating complex agreements, managing risks, and resolving disputes. Requires a Master's in Law and 3+ years in a relevant B2B environment.

Lead medical strategy and scientific engagement for rare diseases across investigational and approved therapies. Drive evidence generation and build scientific partnerships with external stakeholders. Requires advanced scientific degree and 8+ years of Medical Affairs experience.

Field Technician role involves planning and executing off-site repair/maintenance on helicopter engines. Requires Aeronautical Engineering degree or technical apprenticeship, gas turbine experience, and willingness to travel internationally.

Senior Engineering Manager to lead 10–15 engineers across platform stability, modernization, and strategic initiatives. Requires 8+ years of software engineering experience, 4+ in leadership, and strong technical depth.

Reliable couriers needed for a leading food delivery platform. Deliver food and drinks using a bicycle in Cologne and surrounding areas. Must be 18+, confident in city traffic, and have good communication skills in English or German.

Clinical Scientist to own radiopharmaceutical trial lifecycle from protocol to regulatory submission. Execute Phase 1-3 trials, manage sites, and conduct in-depth scientific research. Requires Master's/PhD and 5+ years in clinical development.

Skilled Service/Electrical Technicians needed to install, maintain, troubleshoot, and repair industrial, mechanical, and electrical systems at client sites across Germany. Requires vocational training and a valid Class B driving license.

The Divisional CEO will lead the new Natural Ingredients division, defining and executing strategy with full P&L accountability. The role requires a proven CEO or Managing Director with experience in natural ingredients or related food & beverage sectors.

Join J&T Express as a Working Student or Intern in HR & Recruiting. Gain hands-on experience in recruiting, candidate sourcing via LinkedIn, interview coordination, and HR operations. Business fluent German and English are required.

HRBP Intern role focusing on aligning HR strategies with business unit objectives. Responsibilities include organizational diagnostics, talent optimization, employee engagement, and data-driven HR insights. Requires current university enrollment and a relevant major.

Lead global tax operations, driving governance, standardization, and continuous improvement of tax processes. Define standards, align with Corporate Tax strategy, and drive tax technology adoption. Requires strong knowledge of taxation and SAP.

HSE Supervisor responsible for implementing and overseeing Safety, Health, Environment, and Sustainability across project sites. Requires "Fachkraft für Arbeitssicherheit" certification, fluent English and German, and 3+ years of construction HSE experience in Germany.

Join the Amazon Warehouse Team as a Student-Friendly Team Member. This role involves warehouse operations with options for full-time or part-time shifts. No prior logistics experience is required.

Lead SoSafe's legal team as General Counsel, owning the full legal function including contracts, data protection, and corporate governance. Advise leadership and act as a strategic partner to Sales and Product. Requires 8+ years of experience and deep data protection expertise.