26 English-speaking jobs in Mainz

soonami GmbH seeks an Entrepreneur in Residence with proven startup experience and expertise in AI or Web3. Selected candidates will participate in a 10-day sprint and build their startup as part of a 3-month program.

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.

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.

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.

Develop new recipes and improve 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 recipe 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.

Clinical Research Associate will monitor clinical trial sites for protocol, GCP, and regulatory compliance. Responsibilities include conducting site visits, verifying source data, and supporting site staff. Requires a bachelor's degree in life sciences, 5+ years of CRA experience, and knowledge of ICH-GCP. Experience with women's health studies is a plus.

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 German Cancer Research Center (DKFZ) seeks highly motivated physicians for a HI-TRON Clinician Scientist Fellowship. This fellowship provides protected time for research, comprehensive training, and access to state-of-the-art facilities. Applicants must have a higher medical degree (equivalent to MD-PhD) and be within 2 years of specialized medical training.

As a Revenue Marketing Manager for DACH, Nordic/Benelux, you will design and execute go-to-market strategies to generate leads, build a pipeline, and elevate brand reputation. You will collaborate with regional and global teams to develop marketing plans, localized messaging, and Account-Based Marketing (ABM) programs.

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 experience testing Salesforce applications.