material scientist English-speaking jobs in Mainz

As a Sales & Marketing Intern, you will support the planning and execution of marketing campaigns, create marketing materials, analyze market trends, and assist with event management. You will also maintain customer data, prepare reports, and collaborate with various departments.

Student Assistant to support digital communications team in developing engaging content, campaigns, and strategies. Assist with content creation, campaign execution, website management, and performance tracking. Requires experience in digital communications, content writing, SEO, and proficiency in Canva, Adobe Creative Suite, and CMS platforms.

Provide customer service to English and French-speaking independent sales consultants via phone, email, and chat. Support consultants in developing their businesses by offering guidance and information. Track and document inquiries and issues.

The Internal Audit team at trivago seeks a motivated individual to conduct IT control tests aiming SOX compliance. This role involves developing audit documentation, communicating findings, and collaborating with departments to ensure effective IT controls.

Deliver groceries to customers efficiently by e-scooter or e-bike. Maintain a focus on delivery targets and exceed them. Earn at least €13.90 per hour plus tips.

As a Quant & Engineering Intern, you will develop quantitative analyses, models, and prototypes to solve real trading problems for clients in the LNG and crude oil markets. You will use AI tools, Python, and our optimization software to build solutions and interact directly with traders.

English-speaking Early Childhood Educators are needed for a new Fröbel Kindergarten opening in Berlin-Spandau in July 2026. Responsibilities include supporting all aspects of early childhood education and care in English, planning and implementing pedagogical processes, and collaborating with parents. Applicants must have native-level English, at least B2 German, and a recognized early childhood professional qualification in Berlin.

Permanent W3 professorship in Integrative Neurobiology at OVGU and LIN. Successful candidate will establish a new research group focused on experimental and computational neuroscience or neuroengineering. Requires experience leading international research teams, securing funding, and supervising students. Expected to contribute to LIN's interdisciplinary research programs and develop innovative strategies to advance understanding of neural circuits and networks.

Develop, implement, and maintain advanced risk measurement methodologies for Interest Rate Risk in the Banking Book (IRRBB) and Credit Spread Risk in the Banking Book. Lead the design, implementation, and monitoring of pricing and valuation models for interest rate derivatives. Establish and maintain risk limits for IRRBB and associated derivatives.

Office Manager (Minijob) will schedule appointments, manage mail and travel, handle order management and accounting, and provide customer reception and event support. Requires commercial training, 1+ year of administrative experience, proficiency in office software, and fluency in German and English.

Junior Operations Securities Manager will own daily reconciliation, settlement, and security transaction processes. Support analysis of corporate action events, communicate with external partners, and assist in developing scalable processes. Requires experience in securities services, brokerage, or asset management and fluency in German and English.

Project Engineer to design, plan, and execute renewable energy projects (solar, wind, hydroelectric). Requires a Master's degree in a relevant field and experience in renewable energy engineering.

Operations Assistant needed for a fast-paced food-tech company. Own daily kitchen operations, logistics, and order flow. Execute under pressure, work with teams, and gradually take on catering and sales responsibilities. Must have a valid EU driver's license (Class B) and fluency in English.

Privatal seeks a Group CFO for a mid-market private equity fund in the healthcare service sector. The CFO will partner with the CEO to drive a business transformation and build a best-in-class finance function.

Strategic Supplier Manager - Contract Manufacturer HLA will govern supplier relationships, define strategies, lead contract negotiations, and drive value creation. Requires a degree in a related field and 5+ years of experience in supplier management, sourcing, or procurement.

As Prototype Engineer Apparel, you will create physical garment prototypes, collaborating with cross-functional teams from ideation to manufacturing. You will cut, sew, and embellish samples, ensuring feasibility for production.

Support CEO with finance, operations, travel, PR, and sales activities. Manage day-to-day company operations, including HR, finance, admin, and internal processes. Assist with strategic topics like investor relations, board preparation, and hiring decisions.

Leads illicit trade prevention strategies in Germany, Austria, and Switzerland, safeguarding the company from legal and reputational risks. Manages investigations, builds intelligence packages, and engages with law enforcement and government authorities. Requires fluency in English and German and prior experience in combating illicit activities.

Lead a team of security engineers and incident responders. Provide security advice, manage vulnerabilities, and handle security incidents. Draft security policies and processes.

Junior Sales Manager (m/f/d) needed to manage sales of Petrochemical products in the B2B market. Responsibilities include contract negotiations, customer relationship management, and sales strategy development. Requires a degree in business/economics, chemistry, or a related field, plus one year of sales experience. Excellent communication and teamwork skills are essential.