ruby English-speaking jobs in Düsseldorf

Design control algorithms for wind turbines and wind farms to optimize power output, grid integration, and load reduction. Collaborate on wind farm control, simulations, inflow modeling, and experimental validation.

Leads technical product and process support activities at a European vaccine manufacturing center of excellence. Provides strategic leadership for the Technical Services/Manufacturing Science function, overseeing product stewardship, process monitoring, improvement, validation, and technical transfer.

Flink seeks an Operations Associate to pack customer orders, ensure product quality, manage inventory, and maintain a clean and organized work environment. Must be at least 18 years old, have a German work permit, and be fluent in English or German.

Provides high-level administrative support to the Group CEO, managing complex international schedules, correspondence, and sensitive information. Ensures seamless daily operations, effective coordination, and the highest standard of executive support.

Working student (m/f/d) to support research and development in microfluidics and micro-dosing systems. Tasks include assembly, characterization, process development, and laboratory work. Requires a degree in a relevant field and some laboratory experience. CAD and Python skills are advantageous.

Spend your summer as a Rental Sales Agent at Frankfurt Airport. You will be the first point of contact for customers, providing sales and service. You will handle rental agreements and inquiries, ensuring a positive customer experience.

Support Sales Team Directors with administrative and organizational tasks, including scheduling, documentation, and travel coordination. Provide customer support, resolve queries, and assist with account management activities.

System and software test engineer to join a team focusing on silicon photonics testing. Responsibilities include designing, implementing, debugging, and executing tests for silicon photonics test equipment. Collaborate with development teams in Germany, China, and Japan. Bachelor's or Master's degree in Electrical Engineering, Computer Science, or a related field required. Experience in software and system testing, especially test automation and exploratory testing, is necessary. Good understanding of digital electronics and optical communication, Java programming language, and Linux operating system are also required.

The Institut für Herz- und Kreislaufphysiologie at the University Medical Center Göttingen seeks a Postdoc to study the functional role of β-adrenergic receptors in cardiomyocytes and their inter-organ communication with the brain.

UPS Engineer (m/f/d) needed for Infrastructure Business Area Project Office. Collaborate with stakeholders to define system requirements, perform site surveys, and develop UPS system configurations. Integrate UPS systems with other power infrastructure, provide technical consultation, and act as a subject matter expert. Minimum 5 years of experience in UPS system design, integration, and maintenance required. Bachelor's degree in electrical engineering, systems engineering, or a related field.

Lead client discovery sessions to identify business needs and demonstrate Adaptive ERP solutions. Five+ years of ERP sales experience and pre-sales experience required.

Intern will assist with the implementation of the creative brand vision for BOSS Black & BOSS Camel, participating in color card and concept creation, trend research, and moodboard development.

VAT Manager ensures timely and accurate VAT compliance across multiple countries. Supports business with VAT advisory on cross-border transactions and day-to-day operations. Reviews and improves VAT-related processes and controls. Monitors VAT legislation changes and assesses organizational implications.

Communicate product value to customers, deliver presentations, and support Proof of Concept processes. Provide technical training and resolve customer inquiries. Build relationships with clients and partners.

Analyze turbomachinery components to ensure performance, durability, and manufacturability. Apply FEA and CFD methods to evaluate stresses, fatigue, and vibration behavior. Collaborate with teams to resolve production and field issues.

Medical Scientific Liaison for Rare Diseases / Liver will build relationships with medical and scientific experts, provide scientific education, and support clinical development. Requires an advanced scientific degree, previous MSL experience, and expertise in Rare Diseases / Liver. Fluency in German and English is required.

Medical Director to co-develop medical strategy for Myasthenia Gravis (MG) in Europe. Lead data generation, analysis, and interpretation, safety monitoring, and post-marketing study reports. Provide scientific input for publications, communications, and real-world evidence generation. Deliver medical training and maintain deep scientific knowledge of Neurology/MG.

Site Reliability Engineer will design, build, and maintain reliable and scalable infrastructure for a global SaaS platform. Collaborate with engineering teams to implement SRE practices in a cloud-native environment. Develop and maintain monitoring, alerting, and automation systems. Participate in on-call rotations and contribute to infrastructure improvements using tools like Terraform, Kubernetes, and Argo CD.

Supports the CFO with strategic, conceptual, and project-related topics, ensuring efficient decision-making processes. Prepares evaluations, presentations, and documents for executive-level review. Manages board and committee meetings and represents the CFO in internal and external meetings.

As an Investment Valuation Manager / Associate, you will provide valuation expertise for renewable energy assets across their lifecycle, supporting investment decisions and collaborating with stakeholders. You will refine valuation methodologies, financial models, and best practices.