ruby English-speaking jobs in Düsseldorf

Warehouse Employee for Arvato in Hanover. Duties include order picking, operating packaging machines, labeling goods, and maintaining Excel spreadsheets. Requires German, English, or Polish language skills and knowledge of Excel.

Leads strategy and roadmap for enterprise eHealth portfolio, including cloud and platform solutions. Manages full product lifecycle, from concept to end of life. Defines product architectures and drives development decisions. Inspires and develops Product Management team. Requires extensive experience in enterprise software product management, preferably in eHealth or healthcare IT.

Research Associate (m/f/x) for advanced experimental and numerical study of bubble dynamics in pool scrubbing.

Lead Backend Engineer will define and evolve backend systems architecture, ensuring scalability and alignment with product strategy. Responsibilities include driving end-to-end ownership of projects, championing engineering excellence, and leading and developing engineers. Requires strong proficiency in Python, C++, Node.js, and backend frameworks, as well as experience with AWS services, infrastructure as code, and monitoring tools.

The Biopharma Filtration Sales Specialist supports Account Managers with product knowledge and training, generating sales from new and existing customers. This role evaluates customer processes to identify solutions and support sales growth.

Drive market growth for IFS Loops, an agentic AI platform, across industrial markets. This new-logo, hunter role focuses on introducing autonomous, AI-driven workflows into complex enterprise environments.

Installation Technician responsible for the delivery, assembly, and installation of electrical and electronic devices at customer sites. Requires a Class C driver's license and technical understanding of equipment operation.

Working student to support optical communications development team. Responsibilities include setting up test benches, developing control software, characterizing components, and analyzing data.

Operate robotic platforms, monitor activities, and execute tasks according to procedures. Verify robot behavior, identify issues, and maintain operational records. Assist with robot setup, testing, and process improvement.

Designs BCU-based substation control systems for high voltage direct current (HVDC) systems. Implements control software and verifies it using simulation tools and real-time test environments. Prepares design specifications, documentation, and effort estimations. Clarifies technical requirements within project teams, with customers, and suppliers. Provides remote support during commissioning and service of HVDC systems.

Provide first-level customer support to Finnish-speaking customers via phone, email, and chat. Process orders, manage customer accounts, and handle returns, exchanges, and repairs.

The Product Manager - Reagents will lead the development and growth of reagent products, collaborating with cross-functional teams to create full workflow solutions for Leica customers. This role requires a minimum of 5 years of experience in product management for reagent products and a Bachelor's degree in life sciences or engineering.

Advise national and international clients on US and international tax matters. Interpret and apply international tax treaty provisions. Provide estate and gift tax planning services. Develop tax-efficient structures involving PFICs and CFCs.

Specialization Segment Leader – Life Science (EMEAI) Oxford Instruments is seeking an experienced and commercially aware leader to join our Imaging & Analysis business as Specialization Segment Leader – Life Science (EMEAI).

Lead multiple software development teams, fostering innovation and collaboration. Establish AI-native engineering practices, leveraging Claude Code and similar tools, to drive productivity gains. Ensure adherence to quality, security, and regulatory standards. Synchronize product requirements with business objectives and communicate progress to executive management.

Financial Planning and Analysis Specialist supports the head of Group FP&A in delivering financial analyses to support Group strategy and growth. Responsibilities include developing financial models, analyzing business performance, preparing scenario analyses, and coordinating annual planning and forecasts.

Primary School Teacher (m/w/x) needed for SIS Berlin starting August 1, 2026. Plan and deliver English lessons, mentor students, provide feedback, and communicate with parents. Must have a pedagogical qualification, teaching experience, native fluency in one school language (German/English), and good knowledge of the other.

Software Engineer will develop and optimize frameworks & SDKs for Smart TVs, HbbTV, CTV, and DVB devices. Responsibilities include writing tests and debugging solutions for a range of devices. Requires 3+ years of software engineering experience, mastery of VanillaJS, TypeScript, and Node.js, and experience with testing frameworks.

Provides support to the sales team in a PRADA Outlet Store, assisting with customer service, store operations, and order processing.

Aircraft Technician (B1/B2) performs aeronautical maintenance activities, provides technical instructions, and certifies completed work. Requires AML according to EASA Part-66, experience in civil aviation maintenance, and fluency in technical English.