ruby English-speaking jobs in Düsseldorf

Manufacturing Engineer will develop, maintain, and manage manufacturing documentation and technological process standards. This role involves planning, coordinating, and monitoring manufacturing projects while designing, implementing, and improving cost-effective manufacturing technologies. The Manufacturing Engineer will analyze, support, and optimize existing production processes, specify and implement manufacturing equipment, and collaborate with global manufacturing teams.

Senior Infrastructure Engineer needed for day-to-day infrastructure operations, incident resolution, and lifecycle management. Requires 5+ years of experience in enterprise-scale environments, Linux/Windows servers, VMware, storage, networking, and ITIL. C1/C2 English required.

Leads and strengthens compliance activities across SAP/ERP applications within a regulated environment. Ensures SAP Finance and related financial processes comply with SOX requirements and internal control standards. Executes, documents, and monitors SOX controls, providing compliance reporting to stakeholders and management. Collaborates with stakeholders across Business, IT, Quality, Validation, Testing, Internal Audit, and External Audit functions.

Research Associate for a project focused on the synthesis and characterization of nanocrystals and their assemblies, with a focus on function, switchability, and chirality. Requires a university degree, doctorate, and prior knowledge in nanochemistry, electrochemistry, optical spectroscopy, and electron microscopy.

Lead the design and build of a new global non-profit learning platform ecosystem, replacing fragmented legacy systems. Translate strategic objectives into executable platform initiatives, prioritize business requirements, and define work packages. Manage external software development agencies and own the platform backlog.

The Deutsche Bundesbank seeks two experts to join the Wholesale CBDC team. Responsibilities include analyzing and evaluating technological developments, designing and testing technical solutions, and developing APIs. Candidates should possess a Master's degree in business informatics/information technology or a related field, strong knowledge of blockchain/DLT, and excellent German and English communication skills.

Working student supports quality assurance by performing integration and system tests, documenting results, and collaborating with development and project teams.

This is a 6-month working student/intern role focused on outbound sales and lead generation for an AI-native energy platform. Responsibilities include cold outreach to German industrial SMEs, lead sourcing, and pipeline management within a CRM tool.

Project coordinator to support senior stakeholders on projects, ensuring efficient logistics. Requires SAP system knowledge, order management, process control, logistics expertise, and documentation management skills.

Lead a team of data scientists to develop production-grade AI features for industrial applications. Translate user stories into technical work packages, define technical strategy, and mentor team members.

Please note: You are applying for a position at this specific location. If this was not your intention, explore all open positions here Amazon Open Door Day: Are you interested in joining our team in DTM1 Werne? On 20th January, 2026 at 1pm.

MB Energy seeks an Emissions Quant Analyst and Trading Operator to join its growing new energy business. The role involves supporting trading, operational, and analytical activities with a focus on emissions markets. Responsibilities include developing quantitative solutions, driving emissions operations, and managing international market activities.

Working Student will support the execution of retention marketing strategies across multiple channels, including website, app, and email. Responsibilities include assisting with A/B testing, campaign analysis, and performance reporting. The ideal candidate has a general understanding of e-commerce, online marketing, and UX, with a strong affinity for data and experimentation.

Saarland University seeks a W3 Professor to conduct experimental physics research on quantum systems, focusing on quantum communication, computing, simulation, metrology, or sensing. The successful candidate will contribute to teaching experimental physics and develop study programs in quantum engineering. Applicants must have a doctorate, demonstrate independent research capacity, and have experience in acquiring research funding.

Gain insight into the finance function of a leading consumer goods company. This internship offers the opportunity to work on diverse projects, such as analyzing competitors, launching new products, and improving cost competitiveness.

Experienced Scrum Master to lead two global software development teams, drive agile transformation, and coach teams in Scrum, SAFe, and Kanban.

Provides administrative support to the Sales Director and field sales staff. Manages customer relationships, fills sales funnels, and coordinates marketing activities.

Senior Machine Learning Expert to design, build, and optimize large-scale machine learning systems for identity verification products. Collaborate with ML scientists, engineers, and product stakeholders to productionize AI models. Develop scalable Python-based backend services and microservices architectures.

Product Owner for Germany's national digital services portal. Define product vision, roadmap, and backlog. Manage requirements across multiple development teams and coordinate with federal authorities. Requires CSPO certification, 3+ years product ownership experience in a public sector context, and German C2 proficiency.

As Front of House Host, you are the first point of contact for guests at Reethaus, a performance space. You manage guest arrivals, registrations, and event check-in, ensuring smooth operations and a safe environment. You will oversee capacity, coordinate entry, and address visitor questions.