freelance English-speaking jobs in Wuppertal

Develop and implement sales strategies to acquire new clients in the areas of EPC, IPP, and new markets (UK and Scandinavia). Sell and consult on power control, monitoring, and hybrid energy management solutions. Collaborate with Proposal and Product Management, and represent the company at trade fairs and congresses.

Drive business analysis activities across the product lifecycle for Buy Now Pay Later and Consumer Finance products. Collaborate with product managers, subject matter experts, and engineering teams to analyze, evaluate, and translate business needs into technical requirements.

OneStream Administrator to provide technical support, troubleshoot issues, and manage system operations. Requires 3+ years of OneStream administration experience and proficiency in troubleshooting common issues.

This part-time position involves loading, unloading, shipping, receiving, scanning, sorting, and stocking packages. May utilize heavy machinery. Requires ability to lift up to 70 lbs., read and memorize postal codes, and work flexible hours. Warehouse experience is preferred.

Medical Science Liaison with Haematology experience needed for a global pharmaceutical company. Develop relationships with healthcare professionals and internal/external stakeholders. Provide clinical and scientific expertise in AML and support medical strategies.

Quality Control Chemist needed for analytical testing of chemicals, proteins, and polymers. Responsibilities include method development, documentation, and equipment maintenance. Requires a BSc or higher in a relevant field and experience with HPLC, UV/VIS, and other analytical techniques.

The Consumer Lending Product & Pricing Manager will manage the strategic direction of lending products, optimizing volumes and margins. This role requires a deep understanding of the German consumer lending market and experience in product and pricing management.

Develop and maintain data models and reports for commercial decision-making. Drive efficiency by automating reports, optimizing data processes, and integrating marketing and finance data. Provide ongoing reporting support and collaborate with stakeholders.

This Key Account Manager role focuses on strategic partnerships for FTTX rollout across Germany. The successful candidate will manage relationships with municipalities, authorities, and partners, driving projects forward and coordinating communication.

HR Business Partner will support a specific organizational unit, advising managers on labor law, implementing HR processes, and supporting business needs.

Accounts Payable Accountant responsible for invoice processing, vendor master data, VAT transactions, payment runs, and monthly closing entries. Requires commercial training, financial accounting experience, and proficiency in SAP and MS Office.

Nexi seeks a Partner Account Manager to identify and acquire new Software Vendor partners. This role involves building compelling business cases, leading negotiations, and driving commercial and technical partnership success.

Senior Manager drives ERP transformation initiatives, process improvements, and solution delivery. Develops solutions for new ERP requirements, integrations, and automations. Acts as a senior expert for ERP technology topics and collaborates with stakeholders, IT teams, and partners.

Develop and run system simulations for data center cooling solutions. Translate simulation insights into design improvements and drive model-based development. Collaborate across teams to connect simulation specialists with data center experts.

Technical Expert for cleaning and joining processes. Develops complex processes, coordinates activities across departments, and supports production teams. Requires a university degree in mechanical engineering or materials science, technical understanding of bonding and cleaning technology, and fluency in German and English.

Senior Cloud Software Engineer with 7+ years experience in .NET or Golang development. Designs, implements, and supports cloud-based software solutions. Expertise in distributed systems, cloud platforms (Azure, AWS), containerization (Kubernetes), and DevOps practices. Strong communication and collaboration skills.

Leapsome seeks a Head of Growth & Lifecycle to architect and lead the company's global expansion strategy. This role owns the strategy and execution of the demand engine, accountable for Sales Accepted Opportunities (SAOs), qualified pipeline, and customer expansion revenue. The ideal candidate will design market-focused go-to-market strategies, master the full buyer journey, and partner with Sales, Product, and Customer Success.

Technical Assistant (TA) supports innovation and research activities in proteomics workflows. Responsibilities include assisting with LC-MS measurements, executing experiments, preparing samples, and maintaining equipment. Requires a scientific background, hands-on lab experience, and proficiency in English.

Working Student - Brand & Content Marketing Operations will support campaign management and social media for a major Audible x Pottermore launch targeting German audiences. Responsibilities include content creation, UGC curation, and social media growth strategy. Must be a fluent German speaker with strong organizational and creative skills.

This apprenticeship offers training in international cuisine, including restaurant and event space preparation. Successful candidates will alternate between on-the-job training and vocational school. Applicants should have a vocational diploma and experience in the restaurant or hotel industry.