freelance English-speaking jobs in Wuppertal

The Senior Associate Data Management ensures the accuracy and integrity of master and transactional data within the ERP system. Responsibilities include data entry, maintenance, quality assurance, process improvement, and collaboration with various departments.

Designs modulator and detector modules for high-speed data transmission. Develops InP semiconductor layer stacks and chip designs. Evaluates module performance in system experiments.

ADAS System Engineer needed to evaluate algorithms, analyze sensor data, and ensure performance and safety of advanced driver assistance systems.

Senior Business Travel Consultant provides end-to-end booking support for elite corporate travelers. Manages complex international travel arrangements, including flights, accommodations, and auxiliary services. Requires fluency in German (C1 level) and English, 5+ years of business travel experience, and proficiency in GDS systems.

Support the Infrastructure Debt Transactions team in executing transactions, performing financial analysis, and assisting with due diligence.

Project Lead to drive the rollout of Daiichi Sankyo's global electronic document management system (eDMS) in the EUCAN region. Analyze existing GxP document management processes, develop a migration strategy, and lead the end-to-end implementation. Develop Business Requirement Specifications, review design and test documentation, and lead user acceptance testing. Partner with Process Leads to design training concepts and materials.

Financial Accountant (w/m/d) needed for Munich team. Responsibilities include bookkeeping, monthly reporting, financial statement preparation, VAT returns, and financial analytics. Requires 5+ years of financial experience, proficiency in MS Office and DATEV, and knowledge of HGB financial statements. German and English fluency required.

Provides operational and technical support for security critical IT services and infrastructures, ensuring confidentiality, integrity, availability, and business continuity of ESA's Communication and Information Systems.

Develop innovative power semiconductor components (Si Power MOSFETs) for automotive electronics. Characterize devices, verify specifications, analyze manufacturing data, and coordinate development tasks.

CRM Audience Specialist International will develop and manage CRM audience segmentation strategies based on customer data and behavior. This role will create data filters for paid media activities and track, analyze, and report on campaign performance. Collaboration with regional CRM Managers, Performance Marketing Managers, and other teams is essential.

Senior Fullstack Engineer to build and extend an AI-powered security review platform. Responsibilities include backend development, data flow design, consultant-facing UI development, and platform reliability. Requires 5+ years of fullstack experience, Python/FastAPI, PostgreSQL, async programming, React/TypeScript, and production deployment experience.

Record approximately 1 hour of natural audio conversations based on customer support scenarios and prompts. Participants may record individually or with a partner and will be asked to play a role such as Customer or Support Agent.

The Institute of Meteorology and Climate Research Atmospheric Aerosol Research (IMKAAF) seeks an aerosol physicist to support the planning and implementation of instruments for aerosol generation and measurement at the new AIDAc2 atmospheric simulation chamber.

Project Manager (Straßenbaumeister) to manage fiber optic infrastructure projects. Responsibilities include project planning, construction supervision, cost monitoring, and client communication. Requires Meisterprüfungszeugnis in Straßenbau certificate and 3+ years of project management experience.

Coordinate bio-sample selection and preparation, design probes and libraries for next-generation DNA sequencing, and analyze genomic instability and somatic mutations in neurodegenerative diseases.

Experienced Physiotherapists with a B2 German certification are sought for healthcare opportunities in Germany. Assess, diagnose, and develop personalized treatment plans for patients. Provide physiotherapy treatments and collaborate with healthcare professionals.

Provide high-quality travel assistance via chat, phone, and email. Process bookings and educate customers on the Navan platform. Must be fluent in German and English, have GDS experience, and be metrics-driven.

Packaging Engineer responsible for international launch projects, optimizing packaging, and providing technical support. Requires a degree in Packaging Engineering and 3+ years of experience.

German-speaking Sales Representative needed to build and manage a sales funnel for a premium food & beverage brand. Responsibilities include lead generation, cold calling, CRM optimization, and onboarding new partners. Must be fluent in German (C2) and English (C1), possess strong analytical skills, and have a "hunter" mentality.

Leads the development of new products, technologies, and processes for a global copper processing company. Requires a Bachelor's degree in a relevant field and 10+ years of experience in copper product R&D.