ruby English-speaking jobs in Düsseldorf

Senior Cell Validation Engineer plans, executes, and maintains validation activities for lithium ion and advanced products. Collaborates with cross-functional teams to create test specifications and characterize cell performance. Manages and performs tests across multiple chemistries using various equipment. Analyzes test results, generates reports, and supports root cause analysis. Requires a Bachelor's degree in electrical engineering and 5+ years of experience in advanced cell testing.

Senior Test & Verification Engineer to build and scale testing for autonomous UAV systems. Responsibilities include defining test strategies, planning flight tests, setting up bench and HIL setups, debugging embedded systems, and improving software release and deployment workflows. Requires a degree in a relevant field and 3-6 years of experience in testing, verification, or debugging complex technical systems.

Builds and manages a portfolio of 20 client relationships within a defined technical vertical. Leads the commercial lifecycle from introduction to repeat business. Acts as a strategic advisor, offering data, insight, and market perspective. Identifies and pursues new opportunities within existing accounts.

The Data Center Engineering Operations Engineer ensures the delivery of best practice systems and problem resolution for data center electrical and mechanical infrastructure. This role requires a self-managed individual who proactively seeks solutions to complex technical problems. Responsibilities include setting and maintaining safety standards, driving continuous improvement efforts, and collaborating with stakeholders to deliver operational excellence.

As a Sales Stylist, you will provide exceptional customer service, share product knowledge, and support store operations. You will help customers find their perfect fit and contribute to a welcoming shopping experience.

Lead the development and construction of astronomical instruments or sub-systems for ESO's observatories in Chile. Projects contribute to answering key questions about the universe and our place in it.

Solution Architect (English speaking) needed to support the transition to SAP S/4HANA. Requires several years of IT experience, including SAP ERP WM, MM, and SD, and experience with ERP migration projects to S/4HANA. Strong knowledge of solution delivery frameworks and good understanding of agile software development processes are essential. Fluency in English is required.

Process Engineer to support commissioning and operation of the TPO system. Responsibilities include planning and integrating new production processes, analyzing and optimizing existing processes, and collaborating with cross-functional teams.

Senior SAP ABAP Developer will independently work on commercial business processes and map them in SAP systems. Responsibilities include continuous system development, interface development, and implementing development orders in an agile environment. Experience with ABAP, ABAP-OO, ODATA, and at least 3 end-to-end implementation projects is required.

Aircraft technicians (CAT B1) are needed for aircraft repair and maintenance at the Frankfurt am Main Outstation. Responsibilities include conducting repairs, analyzing defects, installing components, and documenting tasks. Applicants must have a valid EASA license as CAT B1 and experience in aircraft maintenance.

Senior Sales Executive to drive new business development in Southern Bavaria. Responsible for acquiring industrial clients, managing the full sales cycle, and developing long-term partnerships. Requires 5+ years of B2B sales experience, fluency in German, and a residence within 45 minutes of Burghausen.

Design and implement responsive applications within the ORBIS U framework, integrated with existing Java and CPL frameworks. Deliver reusable components, define new products, and iterate on existing ones. Collaborate with product managers and international teams.

Senior Expert ESG & Customs Compliance develops policies and processes to ensure regulatory compliance for DHL Group. Advises stakeholders on technical and strategic questions related to ESG and export control, with a focus on customs issues. Represents DHL Group in industry associations and to authorities.

PhD candidate will investigate the metabolic function and mechanistic pathways of immune cells during anti-tumoral and anti-viral defenses. The position involves planning and executing molecular biological experiments using in vitro and in vivo techniques, including mouse models.

As a Product Manager, you will translate product strategy into actionable goals for the Frontend team. You will facilitate planning sessions, clarify requirements, and support the team in delivering user-friendly product capabilities. You will collaborate with stakeholders to understand workflows and product needs.

Postdoctoral researcher sought for a 4-year DFG-funded project focused on functional genomics of acute leukemias. The position involves analyzing high-dimensional data sets to identify oncogenic vulnerabilities and therapeutic targets.

PhD candidate to investigate the metabolic function and mechanistic pathways of immune cells during anti-tumoral and anti-viral defenses. The position involves planning and executing molecular biological experiments using in vitro and in vivo techniques.

The Senior Account Manager, Service Sales, drives revenue growth in Northern Germany by selling SCIEX Aftermarket Products, including services, contracts, software, training, consumables, and chemistries. This role involves managing existing customer relationships, acquiring new customers, and collaborating with distribution channels.

Capture the future of flight as a Photographer and Videographer at Destinus. Operate FPV drones, shoot high-quality footage of flight tests and production environments, and manage visual assets. Collaborate with internal teams to produce compelling visual stories that showcase Destinus's innovative UAV technology.

Design, implement, and optimize end-to-end AI pipelines integrating Large Language Models (LLMs) into semiconductor testing workflows.