react English-speaking jobs in Wuppertal

The Head of Market Entry & Strategic Growth–IoT will lead global strategic development, commercialization, and ecosystem expansion for mioty, a leading Low Power Wide Area Network (LPWAN) standard. Responsibilities include shaping global growth, building strategic partnerships, promoting mioty in industry forums, and empowering the Fraunhofer IIS mioty team.

We seek a Head Chef to lead our kitchen, develop the menu, and refine existing recipes. The ideal candidate will have experience in a high-volume upscale restaurant, strong leadership skills, and a passion for culinary excellence.

We are the leading answer to the skills shortage. Together with more than 13,000 employees across 32 countries, we connect highly qualified talents with organisations and thereby strengthen the labour market. This is our mission in Germany - through which we drive sustainable progress for individuals, businesses and society. At Hays, you have the opportunity to demonstrate your full potential.

Sales Assistant responsible for order processing, customer communication, and claim handling. Requires commercial education, relevant experience, strong English and MS Office skills, and ERP system proficiency.

Develop and extend fullstack applications using SAPUI5, SAP CAP, JavaScript/TypeScript, and modern Front End frameworks. Build back end services, APIs, and integrations using Java, CAP, Node.js, Spring Framework, and REST. Translate business requirements into technical designs, user stories, and development tasks. Collaborate with product owners, business stakeholders, and cross-functional delivery teams.

Working student supporting financial accounting tasks including invoice processing, expense claims, vendor master data maintenance, and account reconciliations. Must have a Bachelor's/Master's Degree in Finance & Accounting or Business Administration and professional level written and spoken English.

Lead Full-Stack Developer to further develop a learning platform with AI features. Responsibilities include implementing new features, improving performance, and contributing to product strategy. The stack includes Angular, TypeScript, Python, Django, and AWS.

Provide proactive 1st level IT support to global colleagues, managing client devices, and maintaining office infrastructure. Contribute to IT projects and optimize internal systems.

Characterize packaged Thin-Film Lithium Niobate (TFLN) PICs using optical and electrical test equipment. Execute test procedures, document results, and maintain lab environment. Collaborate with senior engineers to support design validation and yield improvement.

Write Instagram scripts (Reels, carousels, stories) for a personal brand aiming to grow an 8-figure online education business. Analyze viral content and translate mechanics into scripts that fit the brand's voice.

Working Student supports the Offshore Sales team with strategic projects, stakeholder interviews, documentation, presentations, and workshop facilitation. Assists the Sales strategic planning team with demand tracking, portfolio transparency, and process improvement. Requires enrollment in a Bachelor's or Master's program, proficiency in MS Office 365, fluency in English, and a passion for renewable energy.

Part-time student software developer with a focus on game development sought. Develop interactive tools, prototypes, and visualizations. Support digital platform and software development.

Store Supervisor at Levi Strauss & Co. supports management in achieving KPIs and implementing profit opportunities. Manages sales targets, monitors performance, and assists with store operations. Ideal candidate is passionate about the brand, has strong customer service and team management skills, and experience driving sales targets and KPIs.

Junior Specialist supports airfreight operations, focusing on export processes.

Service Technician responsible for the maintenance of electrical and mechanical systems, carrying out inspections, repairs, and component replacements on wind turbines. Must have completed vocational training in electrical engineering, electronics, or a comparable field and strong English skills.

Production/Engineering internship or thesis for bachelor or master students with 3+ semesters completed in a technical field. Projects include implementing new technologies, optimizing processes, and collaborating on solutions. Strong analytical skills, communication, and teamwork are required. German (B1/B2) and English language skills are necessary.

Create digital assets for e-commerce projects, including landing pages, banners, and advertising. Collaborate with the Content Team E-Commerce to design and optimize landing pages. Ensure visually engaging, user-friendly designs aligned with branding.

Senior UX Designer will translate mental models and processes into user-friendly designs for internal business tools. Focus on improving clarity, usability, and efficiency for internal users. Collaborate with cross-functional teams to create and implement design solutions.

Design, develop, test, and maintain a Java-based online help and technical documentation platform. Work with Eclipse IDE, OOP principles, and web technologies. Develop and maintain responsive web components using Java, JavaScript, HTML5, CSS3, XML, and XSLT. Build, package, and release documentation and application updates using Jenkins CI, GIT, and related tooling. Provide technical support and continuous improvement for the Eclipse-based online help system. Contribute to the Documentation RAG project by supporting the design and implementation of Retrieval‐Augmented Generation pipelines. Take ownership of the integration layer between Java‐based platforms and Python‐based RAG services. Develop and maintain supporting services and scripts in Python. Assist in evaluating AI/LLM solutions.

As a Team Member / Sales Associate at Dean&David, you will prepare fresh food, welcome guests, take orders, and ensure positive customer experiences. You will work in a fast-paced environment, collaborating with a team to provide excellent service. Previous food service experience is a plus but not required.