35 English-speaking jobs in Mainz

Application programmer for MSR systems will develop MCR application programs, participate in new function development, and analyze technical building system components.

Windows System Administrator/IT Specialist (2nd Level) responsible for implementing user management and IT services, qualifying, analyzing, and resolving IT malfunctions, and creating procedural instructions. Requires completed IT training, in-depth knowledge of Microsoft Windows operating systems, and experience with AD, Azure, Citrix Virtual Desktop, O365, Exchange, and SharePoint.

Process Manager will oversee complex interfaces between business areas, support process introduction and development, identify optimization potential, and document processes. Requires a degree in a relevant field, BPMN 2.0 certification, and experience in process management, ideally in IT environments.

Support and develop the Oxaion ERP system, analyze and fix errors, and plan hardware and software investments. Analyze business processes, develop solutions, and assist departments with questions.

Senior / Director Business Development will develop and execute a business development strategy for the European biotech/pharma market, driving new business acquisition and managing the full sales lifecycle.

Estimator responsible for technical/commercial aspects of sales projects. Collaborates with engineering, sales, supply chain, and legal teams. Defines project costs, prepares bills of quantities, and supports commercial negotiations. Requires a Master's degree in engineering or equivalent experience, fluency in English, and strong communication and organizational skills.

Develop and maintain customer projects using PHP and Laravel. Design and build REST APIs and integrate with frontend applications. Write and maintain comprehensive tests and participate in technical planning sessions.

Medical Doctor needed for home care visits for patients with Phenylketonuria (PKU) in Mainz, Germany. Conduct 12 visits per patient, providing medical support and documentation.

Business Developer to sell battery cells, modules, and packs to B2B customers. Focus on segments such as Energy Storage, micro-mobility, power tools, and industrial equipment. Manage the full sales cycle, from prospecting to account growth. Requires 3-8+ years of B2B sales experience in related industries.

As a Sales Specialist – Battery Sourcing, you will secure high-quality, second-life-ready batteries from scrap yards, workshops, and other sources, feeding them into Circunomics' digital marketplace. You will negotiate contracts, perform on-site assessments, and collaborate with the Business Development team to align sourcing targets with demand.

Sales Specialist to identify, qualify, and win buyers for energy storage systems across key customer groups. Own the commercial pipeline from outreach through negotiation and contracting.

Circunomics is seeking a creative and communicative individual with startup experience to join their team. The ideal candidate will have project planning and strategizing knowledge and a high level of autonomy. Circunomics is a leading company in battery circularity, developing a digital marketplace for battery trading.

Aerodynamic Engineer will design and simulate advanced turbocharger components, including volutes, turbine wheels, and guide vanes. Responsibilities include running high-fidelity simulations, generating turbine maps, and developing 1D/3D simulation methods. Requires a PhD or Master's degree in Mechanical Engineering or similar with a focus on turbomachinery or aerodynamics and 3+ years of experience in automotive or related engineering fields.

Working student to support office management, focusing on customer training and consulting team coordination. Responsibilities include scheduling training sessions, managing correspondence, and arranging travel.

Senior C# Developer to build and evolve backend systems and APIs for business-critical applications. Focus on designing, maintaining APIs, enhancing platforms, and supporting automated testing and deployment.

Customer Service Specialist will drive key service processes, ensuring agents deliver a premium customer experience. Responsibilities include spare parts forecasting, stock monitoring, order accuracy, and supporting agents with product queries.

Develop new recipes and innovate existing ones for a healthy meal delivery service. Collaborate with cross-functional teams to ensure recipes meet nutritional, cost, and production targets. Analyze customer feedback and market trends to inform future development.

Experienced Clinical Research Associate needed for full-service CRO. Medpace provides Phase I-IV clinical development services to the biotechnology, pharmaceutical, and medical device industries. Sign-on bonus up to 7,500 EUR based on experience.

Collects mapping data using client-provided vehicles equipped with data collection equipment. Operates vehicles safely and efficiently, adhering to project guidelines. Maintains vehicle and equipment cleanliness and reports incidents professionally. Requires 5+ years of driving experience, 2+ years professional driving experience, and good English.

Registered Nurse needed for 1:1 care of an 80-year-old VIP client aboard a private yacht. Responsibilities include medication management, chronic condition monitoring, medical coordination, and travel accompaniment. Must have a BSN, 4+ years acute hospital experience, native English or C1 level, and be able to travel extensively within Europe.