25 English-speaking jobs in Mainz

Site Reliability Engineer to join the Observability group within Platform Engineering. Responsibilities include building tools for monitoring infrastructure, microservices, and unique workloads, focusing on developer experience and incident prevention. Requires experience with observability fundamentals (metrics, logs, traces), data extraction/transformation/loading tools, and at least one glue language (GoLang or Python). Must be comfortable operating in a cloud-native environment using infrastructure as code (Terraform, AWS CDK) and have strong Linux skills.

Outside Sales Executive for a high-stakes, uncapped commission environment. 80% field presence required, identifying, qualifying, and closing high-value accounts independently. Proven track record of top decile sales performance and a European driving license are essential.

Provides technical expertise and solutions to support sales. Analyzes customer specifications, recommends product configurations, and guides implementation planning. Develops technical presentations and collaborates with internal teams.

Product Line Engineer for Precision Optics develops and expands standard product families, gathers market information, and collaborates with teams to define product strategies and go-to-market plans.

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.

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.

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.

The Helmholtz-Institute for Translational Oncology Mainz (HI-TRON Mainz) seeks highly motivated physicians for a Clinician Scientist Fellowship. The fellowship provides protected research time, comprehensive training, and access to state-of-the-art facilities. Candidates should have a higher medical degree (equivalent to MD-PhD) and be within 2 years of specialized medical training.

Student Assistant to support production and logistics operations at a traditional winery in Mainz. Tasks include bottling, labeling, quality control, warehouse, and logistics work.

Team Lead Assembly to plan, coordinate, and oversee daily assembly operations, ensuring safety, quality, and productivity. Develop, implement, and optimize processes to improve production efficiency. Collaborate with cross-functional departments and team leaders.

The Helmholtz-Institute for Translational Oncology Mainz (HI-TRON Mainz) seeks highly motivated physicians interested in cancer research for a Clinician Scientist Fellowship. The fellowship provides protected research time, comprehensive training, and access to state-of-the-art facilities. Applicants should have a higher medical degree (equivalent to MD-PhD) and be within 2 years of specialized medical training.

QA Engineer to design, develop, and maintain automated test frameworks for Salesforce solutions. Responsibilities include testing Salesforce customizations, integrations, automations, and data flows. Requires 5+ years of experience with Playwright for end-to-end automation and strong Salesforce testing experience.