freelance English-speaking jobs in Bielefeld

Ensures quality and food safety of packaging materials and processes. Develops and implements packaging quality standards, monitors and optimizes processes, and manages packaging-related quality issues. Collaborates with suppliers, internal teams, and regulatory bodies.

Graduate Associate role supporting top management consulting firms and private equity clients. Responsibilities include identifying and recommending experts and research content, managing client relationships, and driving revenue growth. Requires strong communication, stakeholder management, and problem-solving skills. Must be fluent in German (C2 level) and able to work effectively in a fast-paced, deadline-driven environment.

As a Sales Manager (m/f/x) - Customer Acquisition, you will focus on selling Europages in the Polish market. You will conduct targeted phone calls and presentations to identify customer needs and close deals. You will leverage your sales experience and Polish language proficiency to drive growth in the Polish market.

The Faculty of Mathematics and Physics at the Mathematical Institute is seeking a W3 professor for Analysis to lead research in nonlinear partial differential equations and contribute to teaching and academic governance.

Handle customer requests via email, phone, and social media. Ensure high-quality customer relationship follow-up and contribute to the optimization of tools and processes.

Senior ML Engineer will design and develop next-generation autonomous driving systems using large-scale datasets. Responsibilities include developing production-ready machine learning solutions, executing training and evaluation cycles, and integrating backbone and foundation models.

Senior Medical Science Liaison (MSL) for a 9-month paternity cover in Frankfurt. Lead scientific exchange with Key Opinion Leaders (KOLs) in Rare Disease, communicate clinical data, and support Medical Affairs strategy. Requires advanced degree in medical/natural sciences and proven MSL experience. Fluent in English and German. Extensive travel required.

Lead the production function in a growing GMP-regulated pharmaceutical manufacturing site in Northern Germany. Shape, build, and elevate the entire production function, driving capacity growth and operational excellence. Strong GMP production leadership experience and proven ability to lead teams in a regulated environment are required. Excellent German and English language skills are essential.

This role combines business development and key account management within the aerospace industry. Responsibilities include identifying new business opportunities, managing existing accounts, and coaching team members. The ideal candidate has 5-8 years of sales experience, strong communication skills, and fluency in German and English.

Senior Quantity Surveyor to oversee commercial aspects of major data center projects. Manages budgets, prepares reports, and works with teams to ensure successful project delivery. Requires 3-5 years' experience at PQS level or above.

Lead a large international procurement and supply chain organization across EMEA, AMER, and APAC. Responsibilities include global supply chain management, procurement, logistics, operational excellence, and supply chain digitalization.

This mandatory internship in the Digital Showroom Experience department focuses on creating engaging marketing videos and content for Mercedes-Benz's digital retail tools. The intern will support the conception and implementation of film projects, contribute to a consistent design aesthetic, and prepare project documents.

As Business Controller for IT and R&D, you will partner with leadership teams, driving performance, enabling strategic decisions, and shaping the future of IT and R&D. You will own budgeting, forecasting, and long-term planning, prepare monthly closings, and develop recommendations to optimize business results.

The German Sport University Cologne seeks a W1 Junior Professorship in Data Science with a focus on multimodal training and movement data analysis. The successful candidate will develop approaches for analyzing, controlling, and optimizing training in various sports contexts. Responsibilities include teaching in Bachelor's, Master's, Teacher Training, and Doctoral programs, participating in academic self-administration, and securing third-party funding.

Global Supply Chain Manager needed to develop and implement supply chain strategies, manage logistics, production planning, and inventory management. Requires 8+ years of experience in a full E2E Supply Chain role within the Biotech or Pharmaceutical industry.

The Cluster of Excellence "The Martian Mindset" at the University of Bremen seeks two postdoctoral researchers to lead independent, full-time research projects (up to 36 months). Successful candidates will develop original, interdisciplinary research proposals that address fundamental questions and contribute to the Cluster's long-term vision. Applicants must have a PhD (or proof of imminent completion) in any field relevant to The Martian Mindset and demonstrate scientific originality, methodological rigor, and potential for high-impact outcomes.

Electrical Design Engineer needed for aircraft upgrade and modification programs. Focus on aircraft interior systems, electrical integration, and avionic modifications. Design wiring systems, manage BOMs, conduct load analysis, and prepare technical reports.

Lead a new Antal International office in Munich, Germany. Build a business leveraging 30+ years of global recruitment expertise and resources. Requires 5-10+ years of managerial or specialist experience and a commitment to entrepreneurial growth.

Senior Intraday Trader will execute proprietary day-ahead and intraday power trading in the German market. Responsibilities include developing and refining trading strategies, identifying market opportunities, and collaborating with the German intraday team. Proven track record in proprietary day-ahead and intraday power trading, ideally in the German market, is required. Strong analytical and quantitative skills, coding proficiency (Python), and the ability to combine hands-on trading with structured thinking are essential.

Supports team building forecasting models and data solutions. Maintains and implements data pipelines, data orchestration, storage, and interfaces. Produces analysis of data issues and solutions. Supports short-term forecasting and process monitoring.