freelance English-speaking jobs in Wuppertal

Service Technician performs maintenance, installation, and repair of industrial, mechanical, and electrical systems at client sites. Requires vocational training in electrical, mechatronics, or mechanics, and a valid Class B driving license.

Experienced Data Center Program/Project Manager needed for a 12+ month contract. Lead complex data center programs, drive process improvement, and manage cross-functional stakeholders. Requires hands-on data center experience and fluency in English and German.

Lead short-term trading and optimization for a growing BESS portfolio. Develop trading strategies across day-ahead and intraday markets and oversee in-house optimizer development. Requires P&L track record and Python expertise.

As Chief of Staff, you will build Infinite Orbits Germany from the ground up, partnering with the Managing Director. Responsibilities include corporate setup, government relations, and cross-border coordination. Requires 3+ years in a relevant leadership role.

As the first dedicated data science hire, you will own the machine learning stack end-to-end, designing and deploying models that power customer-facing features. You will work with a unique multimodal health dataset and contribute to the development of a Doctor AI. Strong Python skills, deep learning experience, and a production environment background are required.

Project Manager Connect-In executes machine connection projects for new facilities and relocations. Responsibilities include technical specification preparation, contract negotiation, cost monitoring, and supervising installation activities. Requires an Engineering degree and 2-3 years of relevant project experience.

Analyze human-development systems (education, work, care, access) to map how they enable or suppress potential. Quantify the cost of systemic change to prepare research for €2–10M funder contracts.

Senior Legal Counsel needed for construction and contract law. Provide legal guidance on complex construction projects, drafting, and negotiating contracts in an international setting. Requires 7+ years in public/private construction law.

Experienced Senior Planner needed for a major Data Centre project in Germany. Responsibilities include developing schedules in Primavera P6, coordinating MEP and construction activities, and monitoring site progress. Requires strong P6 and Data Centre planning background.

Purchasing Specialist supporting purchasing and logistics for an international industrial products company. Responsibilities include order coordination, supplier communication, stock monitoring, and ERP data maintenance. Requires 3+ years in purchasing/logistics and Japanese language skills.

Leads a large, distributed engineering organization responsible for ambulatory SaaS solutions and framework modules. Co-defines and drives the strategic product-technology roadmap for cloud-based ambulatory products. Ensures healthcare regulatory requirements are embedded in product development and operations.

Design, build, and iterate engaging levels for new hybrid-casual mobile games. Define pacing, difficulty curves, and player journeys while analyzing performance using KPIs. Requires 3+ years in game or level design.

Detail-oriented Generalist Experts are needed for remote AI training and evaluation projects. Review and assess professional work products like documents and spreadsheets, applying strong judgment to improve AI output quality.

Intern supporting corporate strategy and AI transformation at BSH Home Appliances Group. Tasks include developing AI strategy, contributing to cross-functional transformation projects, and conducting market and technology analyses. Requires enrollment in a relevant field and strong analytical skills.

Electrical Design Manager to own technical direction for German electrical design, covering primary/secondary systems for substations, BESS, and renewables at 110kV+. Requires HV design background and team leadership experience.

Mechanical or Electrical Project Manager to lead data center construction projects from design through commissioning. Responsibilities include managing project budgets, schedules, and technical performance, overseeing MEP design coordination, and ensuring compliance with quality, safety, and environmental standards. Requires a degree in Mechanical or Electrical Engineering and proven experience delivering MEP packages on large-scale construction projects. Fluency in German is preferred.

Administrative Assistant needed for a German manufacturer of machine components. Responsibilities include customer communication, care, and submitting delivery and various documents. Requires ERP proficiency and strong German and English communication skills.

Experienced SAP IBP Solution Architects or Senior Consultants needed to deliver complex supply chain transformation programs. Responsibilities include designing and delivering solutions across Demand, Supply, Response, and Synchronized Planning. Fluent German and English are essential.

Junior HR Operations Specialist supporting daily HR and office operations. Requires a degree in HR/Admin, 0-2 years experience, and advanced German, English, and native/professional Chinese proficiency.

Customer Success Manager for installer partners in West Germany. Ensure successful onboarding, strong adoption, and satisfaction by acting as a trusted advisor. Requires fluent German and English, and experience with SMB customers.