ruby English-speaking jobs in Düsseldorf

Drive sales and manage customer relationships in the construction industry. Manage and grow customer platforms, focusing on high-potential customers. Promote Berner as a premium brand and handle objections, delivery, and quality claims. Analyze sales area KPIs and report to superiors. Collaborate with the sales team to achieve performance goals.

Research Assistant (m/f/d) for a fixed-term, part-time position (67% of full-time) at the Institute of Chemistry - Computational Chemistry of Nanomaterials. The position is for 36 months and focuses on electronic structure calculations for material design within the DFG project DISCOFOX.

Demi Chef de Partie (m/f/d) for à la carte service in Champions Bar & Restaurant and The Grapeful Vinothek. Prepares fresh, high-quality dishes, ensures smooth operations, and contributes ideas. Requires completed chef training, experience as a Demi Chef de Partie or Commis de Cuisine, and experience in à la carte service.

Senior Scientist will manage and coordinate the development of innovative food & beverage solutions, from concept to production. Responsibilities include recipe and raw material management, project and portfolio management, and leadership of cross-functional teams. Requires a university degree in food or beverage technology, extensive experience in project work and product development, and strong leadership skills.

Provides advanced technical support for NATO CIS Services and architecture and IT/Data Management Services. Supports fault diagnosis, maintenance, and documentation. Collaborates with stakeholders to ensure service continuity and performance.

Working Student to support the Renewables Business Administration Team in Düsseldorf. Tasks include data analysis, reporting, administrative processes, creating reports and presentations, and database maintenance. Must be enrolled in a relevant program, proficient in Excel and PowerPoint, and have experience with databases and SharePoint.

The Personality Lab at Ruhr University Bochum seeks a Postdoctoral Researcher to conduct research on motivation, goal pursuit, self-control, and personality development. The successful applicant will conceptualize and administer research projects, disseminate findings, acquire third-party funding, teach, and mentor students.

For the afternoon and holiday programme of our primary school in Steinbach (Taunus) near Frankfurt we are looking for a motivated and qualified Educator for our Hort (in part-time – 18 hours/week).

Provide support to the Kia Europe Sales Team, assisting with projects, data analysis, and strategic initiatives. Support the monitoring and reporting of National Sales Company sales and incentive programs performance. Interact with business units to coordinate and consolidate market-specific data. Develop data visualizations and analysis, transforming complex sales data into clear reports and dashboards. Support the execution of Sales Department events and meetings.

Responsible for the quality of the operational knowledge base, creating standards from resolved customer issues. Defines processes for knowledge creation, review, and maintenance, ensuring scalability and accessibility. Introduces new ways of working in support, delivery, and engineering teams through training and onboarding. Manages key success metrics and implements corrective measures to ensure standards are consistently followed.

Provides administrative and financial support to a Facilities Management team. Manages purchase orders, invoices, and financial reports. Maintains databases and performs clerical duties. Requires two years of post-high school education and five years of diverse clerical experience.

Teach programming online at your own pace. Deliver personalized lessons to students of all levels. Strong communication and teaching skills required.

The W2 Professorship for AI Infrastructure (f/m/d) at the Faculty of Computer Science and Business Information Systems involves application-oriented research and development projects, teaching, and promoting networking in the field of AI infrastructure. The successful candidate will establish a research group focusing on topics like distributed systems, cloud-native infrastructure, AI operationalization, and efficient data management. Teaching experience in AI and proficiency in English are required.

Project Manager will drive and steer sourcing process projects for E.ON's product and service categories. Responsibilities include developing sourcing optimization initiatives, collaborating with negotiation experts, and communicating sourcing optimization activities to senior management.

MarketFully Group seeks a native Norwegian speaker with SEO experience to optimize Google Business Profiles for a globally recognized sportswear brand.

Provides support for the selection, implementation, and management of transfer pricing IT systems. Monitors ICTP results, identifies deviations, and coordinates corrective actions. Builds relationships with internal stakeholders to ensure alignment on transfer pricing matters.

Social Media Intern to support influencer marketing campaigns for the DE market. Responsibilities include identifying influencers, managing the gifting program, and analyzing campaign performance. Must be fluent in English (C1) and German (B2) and have ongoing studies in business, communication, or a related field.

Lead the Construction and Engineering facultative practice, placing complex risks globally and driving business strategy. Extensive experience in facultative reinsurance broking and a proven track record of placing large-value risks are required.

TeamViewer seeks a Distribution Account Manager to scale SMB and mid-market business via distributors and partners in France, Benelux, and the Nordics. This role focuses on driving scalable growth, operational excellence, and partner productivity.

System Integration Test Engineer (m/f/d) for Airbus Helicopters in Donauwörth. Responsibilities include defining, preparing, and implementing verification and integration plans for helicopter systems, supporting ground and flight testing, and developing test procedures. Requires a degree in Electrical Engineering, Aerospace, or a related field, experience in project management, and knowledge of embedded systems.