freelance English-speaking jobs in Wuppertal

Lead materials development activities for Corning Optical Communications globally, applying polymer science and engineering expertise to support new product development and existing products. Assist with polymer compound selection and evaluation for cable applications and serve as a materials subject matter resource for product and project engineers. Conduct research, propose experiments, analyze data, and collaborate with internal teams to provide polymer materials fundamental understanding and development support. Interface with suppliers to test and evaluate new materials and resolve problems.

The Clinical Territory Associate will gain knowledge of technical, clinical, and sales aspects of the da Vinci® Surgical System. They will provide technical and clinical support, lead product demonstrations, and contribute to sales goals. The role requires a Bachelor's degree, fluency in English and German, and the ability to travel up to 50%.

Clinical Research Operations Assistant to support the Early Phase Clinical Unit (EPCU). Responsibilities include kitchen operations, reception & hospitality, and warehouse & logistics. Requires fluency in German, basic English, proficiency in Windows Office, and experience in a relevant field.

The ifo Institute seeks a Postdoctoral Researcher / Economist (f/m/d) to join its Center for the Economics of Education. The three-year position, with possible extension, involves research on the economics of education, project management, mentoring doctoral candidates, and publishing research findings.

Intern will support strategic and operational pricing alignment with international markets, assist in the digitization of pricing processes, and contribute to the CKD strategy.

Senior accounting/banking clerical position requiring 4+ years of bookkeeping, banking, or accounting experience. Analyzes financial data, processes payments, and provides guidance to lower-level clerks. Requires proficiency in accounting software and strong analytical and problem-solving skills. Must have a high command of English.

As a Sales Stylist, you will provide exceptional customer service, share product knowledge, and support store operations. You will create a welcoming shopping experience and work with your team to achieve sales goals.

Working student (m/f/d) to build, maintain, and strengthen the social media presence of Eightyards on global platforms. Responsibilities include creating social media content, supporting community management, and researching industry trends. Requires a degree in digital media or communications, strong social media knowledge, and excellent digital skills.

Happy Mammoth seeks a part-time freelance Creative Strategist with a direct-response mindset for paid media (Meta-focused) campaigns. Develop performance creative strategy, translate data into creative decisions, and build testing roadmaps. Proven experience in performance marketing creative and direct-response copywriting required.

Conduct research on future satellite-to-vehicle communication solutions based on 6G networks. Develop and implement algorithms for handover mechanisms between terrestrial and non-terrestrial networks. Validate concepts through simulations or prototypes. Contribute research results to 3GPP studies and working groups.

Provides safe and professional transportation for senior leadership, Shareholders' Committee, and VIP guests. Coordinates complex travel, logistics, and vehicle maintenance.

Biotechnology Research Expert needed for contract role. Review and evaluate AI-generated outputs related to experimental design, genomic data analysis, and biotech research methodologies. Must have 3+ years of experience in biotechnology, genomics, proteomics, or molecular biology. Advanced degree preferred.

Site Supervisor to oversee day-to-day operations and maintenance of earthing & Lightning Protection projects. Ensures efficient project delivery, quality standards, and positive client relationships. Leads a team of technicians, resolves issues, and promotes a safe work environment.

BBIS seeks a part-time External Boarding Mentor to support the wellbeing, safety, and growth of international students. Responsibilities include supervising students during weekend duties, planning activities, and ensuring student safety. A Bachelor's degree in a relevant field, experience working with adolescents in residential settings, and confident English are required.

Solve large, complex real-world problems using ML, AI, NLP, RL, and distributed systems. Develop production-ready models and collaborate with tech and product teams.

Process Engineer will provide technical expertise across vaccine production facilities, optimizing performance in areas such as utilities, fermentation, freeze drying, aseptic filling, and packaging. Responsibilities include leading process improvement initiatives, managing deviations and change controls, and resolving complex process or equipment issues.

Warehouse Worker (m/w/d) needed for a global e-commerce logistics specialist in Herrenberg. Tasks include unloading parcels, packing, and scanning. Experience as a warehouse worker is an advantage. English or Hindi language skills are required.

Account Manager Netherlands (m/f/d) needed to develop and manage project sales, support national electrical wholesalers, and achieve sales targets. Requires lighting knowhow, 5+ years experience, electrical/electronic knowledge, and fluency in Dutch.

Sales Executive to identify and engage potential clients, roofing constructors, and distributors. Responsibilities include planning sales initiatives, presenting products, building relationships, and negotiating deals. Requires 3+ years of field sales experience, strong communication skills, and fluency in German and English.

Financial Planning and Analysis Specialist supports the head of Group FP&A in delivering financial analyses to support Group strategy and growth. Responsibilities include financial modeling, business performance analysis, scenario analyses, and coordination of annual planning and forecasts.