freelance English-speaking jobs in Wuppertal

Lead Global Payroll & Time Management ensures stable, compliant payroll and time management solutions through operational leadership, system optimization, and implementation.

Provide multichannel customer support (telephone and written) for 1st and 2nd level issues. Troubleshoot and resolve hardware and software problems, administer networks, and ensure service level agreements are met.

The DMS Group seeks an IT Administrator / IT Specialist in System Integration to analyze and resolve hardware and software issues, set up new systems, and plan/execute rollouts in Windows environments.

Provides administrative and sales support to the sales team. Creates and processes sales documents, maintains databases, and assists with financial tasks. Requires strong attention to detail, organizational skills, and proficiency in Microsoft Office.

Executive Assistant to support the CEO of a growing renewable energy platform. Manages complex diaries, coordinates meetings, arranges travel, and prepares briefing materials. Requires 5+ years of experience supporting C-suite leaders and strong communication and organizational skills.

Lead Cloud Engineer to design, develop, and establish Microsoft Azure or Google Cloud services and architectures. Provide 2nd and 3rd level support for cloud services and drive continuous optimization. Requires several years of experience in multi-cloud environments, strong communication skills, and a service-oriented mindset. Fluency in German and English is required.

Develop and design innovative analog and digitally controlled power supply systems for space applications. Contribute to the development of customer-specific power electronics solutions.

Operate, harden, and evolve Linux-based development and build platforms including Jenkins, GitLab Runner, container runtimes, and artifact caches. Build and evolve declarative infrastructures using Ansible for provisioning, configuration management, and authentication. Support the design and optimization of Jenkins-based pipelines on Linux systems. Operate and enhance container- and virtualization-based platforms (Docker, podman, Proxmox) with a focus on Linux internals, security, and scalability.

Experienced Customer Project Manager required to support BESS rollout and operational procedures for German customers. Will act as in-country representative, managing project timelines, risks, and communication. Requires 8+ years' experience in power systems, AC/DC infrastructure, or electrical/electronic systems deployment. Must have strong project management experience in technical delivery environments and excellent communication skills in German and English.

Software Engineer will analyze, design, develop, and maintain claims systems. Responsibilities include integration, administration, and maintenance of software products, and implementation of patch and vulnerability management. Requires a degree in computer science or comparable training, experience with microservices, and proficiency in German.

Develops clinical education materials and provides expertise on devices, procedures, and protocols throughout clinical investigations. Educates physicians, hospital personnel, and staff on device handling, implantation, and troubleshooting. Provides feedback to improve training materials and validates center, physician, and staff certifications.

Junior investment professional sought for market-leading infrastructure team focused on global direct investments. Will involve deal origination, execution, financial modeling, and due diligence. Requires first-time experience in investment banking, M&A, consulting, or private equity, ideally with infrastructure exposure.

Supports Global Trade & Compliance organization by ensuring international shipping activities from the EU comply with EU, German, and international trade and environmental regulations. Assists with development, implementation, and monitoring of compliance policies for the International Shipping program within the EU. Conducts compliance audits and risk monitoring, evaluates product eligibility for international shipment, and supports customs and trade compliance.

As an AI Consultant at Plat4mation, you will design, implement, and advise on AI-driven solutions within the ServiceNow platform. You will work with sales, architects, and delivery teams to translate customer requirements into scalable AI solutions.

Formycon seeks a Director (gn) Portfolio Management, Market Analysis & Strategic Projects to drive strategic decision-making. This role combines portfolio ownership, market intelligence, business case development, and cross-functional project leadership. Responsibilities include identifying new portfolio candidates, developing prioritization frameworks, evaluating portfolio performance, conducting market analysis, developing business cases, and leading strategic projects.

Healthcare Consultant will complete projects from information gathering to recommendation drafting and presentation. This role involves collaborating with clients in the Pharmaceuticals, Biotech, Medical device, Diagnostics, Vaccines and Animal Health industries.

Customer Service & Asset Specialist to provide support to DACH region customers, manage order-to-invoice coordination, and collaborate with internal departments.

Service Desk Manager to lead 1st Level Support for a retail company. Responsibilities include managing tickets, user support, and collaborating with the IT team. Requires experience in IT support, ITIL, and service processes.

Research Associate (Postdoc) to conduct research in privacy-preserving technologies, secure data processing, and securing AI systems. Requires a PhD in Computer Science, publications in cryptography and cybersecurity, and expertise in cryptography and/or machine learning.

Design, develop, and maintain backend services using Kotlin. Build and evolve scalable, event-driven systems that process, validate, and expose financial data. Collaborate with the Product Owner and Finance stakeholders to translate business requirements into robust technical solutions.