freelance English-speaking jobs in Bielefeld

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.

Drive DACH growth for a leading ticketing platform. Identify, approach, and close new event organizer and ticketing partnerships across Germany, Austria, and Switzerland. Own the full sales cycle and represent TicketSwap at industry events.

Your tasks HHL has a reputation for outstanding teaching and an international student body. The candidate should show strong evidence of international teaching excellence at the interface of entrepreneurship and strategic management. Teaching approaches should combine multiple methods and follow a research-induced teaching style.

As a Design Engineer at Personio, you will build UI components, infrastructure, and systems that empower designers to work closer to code. You will contribute to high-priority product features, collaborate across disciplines, and help define the Design Engineering discipline.

Provides first and second line support for Workday HCM across multiple countries and business areas. Manages support tickets, configures system settings, and coordinates testing activities. Collaborates with stakeholders and external partners to ensure system stability and continuous improvement.

The Faculty of Mathematics and Physics at the Mathematical Institute is seeking a W3 professorship for Analysis. The successful candidate will be an international leader in Analysis with a strong publication record and experience shaping the field.

Experienced SAP SuccessFactors expert sought for a hands-on role optimizing and developing the global SuccessFactors Suite.

Customer Service & Office Manager DACH needed to ensure smooth daily operations. The role combines office management, customer care, service coordination, and administrative support. Requires several years of experience in office management, administration, customer service, finance coordination, or service support. Fluent German and English required.

Data Centre Mechanical Project Manager oversees on-site mechanical systems installation and commissioning at data center projects in the Frankfurt Rhine-Main Metropolitan Area.

Drive energy procurement strategy, optimize costs, ensure compliance, and promote sustainability through smart sourcing and Power Purchase Agreements (PPAs). Develop and implement negotiation strategies, analyze energy consumption, and evaluate/select energy suppliers. Collaborate with internal and external partners, monitor market trends, and manage energy contracts.

Sales Specialist for Hologic's Diagnostics business in South West Germany. Develops sales strategies, builds customer relationships, and drives market growth for diagnostic solutions in areas like Cytology, Pathology, Digital Pathology, or Molecular Diagnostics.

DuPont seeks a EMEA New Business Development Technology Lead to identify, prioritize, and develop new applications and platforms for Tyvek® Roll Goods Business. This role will define technical value propositions, lead feasibility assessments, and collaborate cross-functionally to support business case development and transition opportunities to commercialization.

Information Security Engineer needed to develop and maintain security policies, drive GDPR compliance, and manage security incidents. Experience with SIEM, vulnerability scanning, penetration testing, and security awareness training required.

Senior Fullstack Engineer to build and extend an AI platform that automates security reviews. Responsibilities include backend development, data flow design, consultant-facing UI development, and platform reliability. Must have 5+ years of fullstack experience with production ownership of complex software, Python and FastAPI, PostgreSQL, async programming, React and TypeScript, and production deployment experience.

Leads and develops site-wide vaccine manufacturing operations, ensuring safe, compliant production aligned with GMP and regulatory requirements. Drives operational excellence, digitalization, and continuous improvement initiatives. Builds and develops a high-performing production leadership team.

FPV Drone Builder & Flight Test Specialist to support R&D with flight testing, tuning, prototype setup, and test infrastructure. Configure flight controllers, tune Betaflight/PID gains, and ensure stable flight performance. Strong hands-on FPV experience and EU citizenship or eligibility for EU security clearance required.

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.

Senior R&D Engineer will develop and validate ultrasonic measurement systems for demanding applications. Responsibilities include translating customer requirements into system architectures, defining technical specifications, and conducting verification and release tests.

Technical Assistant (MTA, BTA, CTA) to support T cell differentiation and leukemia research. Responsibilities include laboratory management, mouse colony management, training staff, cell analysis, and ensuring good research practices. Requires experience in flow cytometry, mouse models, and molecular biological methods.

Lead strategic logistics network planning across Europe, designing and optimizing warehouse networks, transportation, and fulfillment infrastructure.