freelance English-speaking jobs in Wuppertal

Experienced Head of Service needed to unify and scale service organization across four B2B SaaS businesses. Lead teams, build KPI-driven support, and drive service revenue through paid offerings. Requires 8+ years of experience, including 3+ years leading B2B software support. Fluent German is required.

Own end-to-end ETF delivery across capital markets and platform operations. Responsibilities include portfolio management, replication, quality monitoring, and driving platform evolution. Requires experience in ETF operations and strong market mechanics knowledge.

Computational Seismology Expert needed to design challenging problems using scientific software to test AI capabilities. Requires graduate-level STEM training, Python proficiency, and Linux skills.

Lead and manage complex Photonic Integrated Circuit (PIC) development projects within a dynamic startup environment. This role involves designing, simulating, and characterizing photonic components while managing partnerships and resources.

Own the consumer mobile app end-to-end using React Native for iOS and Android. Responsibilities include architecture, native module building (Swift/Kotlin), and managing store releases. Requires 5+ years of production React Native experience.

Senior Ecotoxicologist provides expert advice on ecotoxicology, exposure science, and regulatory compliance. Responsibilities include environmental risk assessments and supporting product registration under global regulations like REACH and TSCA.

Senior Officer Master Data supports the Regional Treasury EMEA team by validating customer and supplier master data. Responsibilities include managing small projects, preparing new business partners, and ensuring team knowledge is current. SAP R/3 FI and strong analytical skills are required.

Procurement Specialist manages strategic packaging categories, develops supplier partnerships, and supports sourcing initiatives. Responsibilities include cost optimization, supply security, and driving continuous improvement projects.

Lead Veloq's commercial push in Europe, owning revenue targets and closing major enterprise customers. Drive sales of warehouse automation and fulfilment software to grocers, retailers, and 3PLs. Build the sales team and strategy.

Product Engineer cooling/thermal drives operational excellence for IC testers. Requires Mechanical/Mechatronics degree, experience with cooling equipment, and knowledge of mechanical product development.

Seeking an Intern & Thesis Student for HVAC & Powertrain Cooling starting January 2027. Responsibilities include testing, analysis, and development of automotive thermal systems, and participating in European field tests. Requires mechanical/automotive engineering background and strong German/English skills.

Lead global tax operations as Global Process Owner, driving governance, standardization, and continuous improvement of tax processes. Requires strong knowledge of taxation, Financial Accounting, SAP, and excellent English and German skills.

Finance Manager to build the finance function for a growing ERP consultancy. Responsibilities include cash planning, budgeting, treasury, and supporting M&A. Requires 2-5 years of relevant experience and fluency in English and German.

Manage and develop Linux systems, owning operational information security topics like endpoint hardening and vulnerability management. Drive automation and configuration management while supporting IT challenges in an Agile environment.

Embedded & Systems Software Developer for PETRA IV. Develop software for camera control, high-speed data reception, and system interfacing. Requires Master's in CS, experience with embedded/systems programming, Python, and C++.

Develop and execute B2B marketing strategy for a securities trading bank connecting traditional finance with digital assets. Manage brand, content, digital campaigns, and events for institutional audiences. Requires 4-6 years in B2B marketing, preferably in fintech.

Senior Risk Manager for IT & Data Risk. Drive risk framework evolution in data privacy and information security. Oversee internal controls, support audits, and translate regulatory expectations into action. Requires relevant experience and strong analytical skills.

Security Engineer II joins Product Security to ensure web, mobile, and backend applications are built securely. Responsibilities include threat modeling, vulnerability triage, and integrating automated security testing into CI/CD pipelines.

Senior technical anchor for application support, providing L2/L3 support for trading and market-data applications. Responsibilities include incident management, troubleshooting Linux systems, and leading technical direction. Requires 7+ years in financial markets support.

Process Engineer for Dry and Wet Etching in semiconductor manufacturing. Responsibilities include ensuring process stability, driving improvements, solving technical challenges, and supporting new technology implementation. Requires a technical degree and strong analytical skills.