ruby English-speaking jobs in Düsseldorf

Field Technician to install, maintain, and troubleshoot communication systems and network infrastructures. Requires technical certification and proven experience in a similar role.

Lead end-to-end data migration from SAP S4/HANA to GCP, focusing on planning and manufacturing areas. Translate business requirements into data mapping documents and validate transformations.

Lead Manufacturing Engineer to manage industrialization of products from design to series production. Drive DFM, DFA, and process flow development. Manage supplier packaging requirements and production line concept.

Working Student supports office operations at a fast-growing startup focused on advanced unmanned systems. Responsibilities include maintaining an organized office environment, managing supplies, and assisting with facility improvements. Must be a current student with C1 English and near-native German fluency.

Service Technician ensures wind turbine reliability through on-site servicing and maintenance. Responsibilities include repairing turbines, analyzing error messages, and documenting work. Requires vocational training in a relevant field, familiarity with Microsoft and iOS, and a valid Class B driver's license.

This PhD position at Bielefeld University focuses on particle cosmology, investigating the influence of non-standard neutrino properties on cosmological evolution. The successful candidate will conduct research under the supervision of Dr. Isabel Oldengott, publish findings, and participate in teaching and departmental activities.

Provides engineering support for solar projects, including supervision, onsite support, and troubleshooting. Collaborates with engineering partners and customers on technical issues. Requires 3+ years of experience in the solar energy industry, with a focus on Utility and C&I solutions. Excellent communication, leadership, and problem-solving skills are essential. Fluency in German and English is required.

The Economics of a Green and Just Transition team seeks a trainee to support policy and research work on financing and implementing a green and just transition. The trainee will draft content, contribute to EU-level policy analysis, and may support an industry-focused project.

The Senior Coordinator – Revenue Operations / Billing will coordinate and perform billing activities, provide support to billing attorneys and clients, and ensure adherence to client guidelines and firm policies.

Account Executive manages transactions on a B2B marketplace, collaborating with buyers and suppliers to ensure smooth trade. Analyzes market trends and trade data, builds client relationships, and contributes to platform improvements.

Lead and develop a field sales team in Northern Germany, driving regional business growth for industrial automation solutions. Provide technical sales support, build customer relationships, and execute sales strategies.

At Leica Microsystems, one of Danaher’s 15+ operating companies, our work saves lives—and we’re all united by a shared commitment to innovate for tangible impact. You’ll thrive in a culture of belonging where you and your unique viewpoint matter. And by harnessing Danaher’s system of continuous improvement, you help turn ideas into impact – innovating at the speed of life.

PhD student position at European XFEL to study Fe-bearing materials using high photon energy X-ray scattering experiments. Will participate in R&D, dynamic compression experiments, and thesis preparation. Requires a University/Master's degree in a relevant field and eligibility for the TU Dortmund PhD program.

Lead and manage HDV sub-projects, ensuring successful project realization. Support customer organizations, manage customer requirements, and deliver project updates. Develop design specifications based on customer needs and regulations. Conduct LSA, LORA, and LCCA analyses and support commissioning, operation, and maintenance.

Warehouse Worker needed to support production and customer demand. Responsibilities include picking, packing, inventory management, and supporting production with components and simple tasks. Experience with warehouse management systems and MS Office required. Must have authorization to work in Germany.

Field Application Engineer drives demand creation by leveraging technical expertise to champion return on engineering investment. Partners with sales team, providing technical support and consulting. Manages supplier and customer expectations, builds relationships, and participates in strategic branch meetings.

Provides first-line support to Ishida Aftersales customers, manages customer orders, invoices, and inquiries. Coordinates German service team, schedules engineer deployments, and processes service orders.

FutureLog seeks a Product Marketing Manager to shape product positioning, messaging, and go-to-market strategies for its Procure-to-Pay platform. This role involves market analysis, product storytelling, and collaboration with cross-functional teams. Experience in SaaS, product launches, and pricing strategies is required.

Define, manage, and maintain spacecraft avionics and electrical system requirements. Coordinate interfaces between spacecraft equipment, electronics, software, and control systems. Support avionics architecture development and perform trade studies for equipment selection.

BMS Engineer will support product pre-sales, conduct system requirement analysis, and coordinate architecture design. Responsible for product system integration testing, debugging, and quality follow-up. Requires a full-time subject learning experience with work experience preferred. Familiarity with CANoe, CAN bus analysis, BMS control strategy, and battery pack electrical and electronic systems is desired. Fluent in English and Chinese, German preferred.