freelance English-speaking jobs in Bielefeld

Senior Product Designer (m/f/d) to own end-to-end, CRO-focused design across web journeys. Design and execute A/B tests, analyze results, and optimize web funnels for conversion, activation, and engagement. Partner with Product, BI, Marketing, and Customer Care to drive growth.

This role supports administrative processes in back office and office management. Responsibilities include organizing business trips, welcoming visitors, handling mail, and providing general administrative support. The ideal candidate has a commercial background, experience in travel management or back office, and strong organizational and communication skills.

Provide comprehensive financial advice to affluent international clients, primarily in English. Advise on investment products and portfolio growth, while managing client relationships and ensuring compliance with regulations.

Experienced DECT NR+ Wireless Systems Architect needed to lead architecture and design of wireless communication systems. Develop system concepts, conduct performance analysis, and contribute to implementation and optimization of DECT NR+ PHY/MAC protocol stacks.

The Project Manager provides standardized site support to wind farms in the German region, coordinating project activities and ensuring safe and efficient offshore operations.

Elanco seeks an Export Compliance Manager to develop, implement, and manage global export control, trade embargo, and sanctions compliance programs.

Leads and manages applied science teams, defining technical roadmaps and driving innovation. Translates business requirements into technical solutions, collaborating with cross-functional teams to ensure alignment with business objectives. Participates in the full development cycle, from research and design to implementation and maintenance. Evaluates and makes strategic decisions regarding ML frameworks and technologies. Publishes research findings and represents Amazon at conferences.

Chief of Staff to the Chief Product Technology Officer, managing operations, prioritization, OKRs, budget control, and strategic projects. Requires 5+ years of experience in a similar role, tech affinity, strong organizational skills, and fluency in German and English.

Senior Solution Architect will design and support a distributed energy management system for construction sites within the Liebherr ecosystem. Requires experience with distributed IoT software systems, cloud mechanisms, and DevOps.

Clinician for the Clinical Centre of Excellence assesses clinical evaluations of medical devices according to the MDR. Prepares deficiency reports and serves as an internal point of contact for clinical matters. Provides support during audits of clinical processes and may continue to practice medicine part-time.

Senior Mechanical Engineer to lead mechanical design and coordination of data center projects. Responsibilities include system design, calculations, coordination with multidisciplinary teams, and ensuring compliance with German regulations and standards. Requires a Bachelor's degree in a relevant engineering discipline and experience delivering mechanical building services projects in Germany.

As a Product Marketing Manager, you will lead end-to-end product development, define product roadmaps, and collaborate with engineering and R&D. You will engage with customers, manage technical documentation, and drive Alpha/Beta phases.

Account Manager for the northern region of Germany. Develop regional sales plans, build customer relationships, and propose solutions to meet customer needs. Requires a scientific degree, 3-5 years of sales experience in immunochemistry/diagnostics, and fluency in German and English.

Postdoctoral position in micrometeorological and statistical modeling to support spatial planning. Applicants must hold a degree in a relevant field and have experience with statistical methods, machine learning, and spatial datasets.

This entry-level role provides hands-on experience in trade credit insurance. You will support contract management, assist with underwriting decisions, and gradually take on client responsibilities.

Market Development Engineer for power supplies (AC/DC, DC/DC, inverters) in Germany and Austria. Collaborate with sales teams, manage project pipelines, and provide technical support. Requires experience in power supply design and customer discussions. Fluent German and English required.

Lead the clinical development of a high-priority obesity, diabetes, and incretin-based therapy asset from post-Proof of Concept through registration. Define and execute the clinical development strategy, own the clinical strategy at the program level, and drive late-stage decision-making.

PhD student will investigate how viruses interact with the innate immune system, focusing on the protein complex PQBP1 and HIV-1 sensing. The position involves omics approaches, cell culture, molecular biology, and viral infection experiments.

Senior Fund Accounting Officer required for alternative investment fund administration. Experience in fund setup, daily operations, financial reporting, and investor servicing. Fluency in English and French is essential.

The Head of Technology Transfer will lead the strategic direction of CTC's technology transfer, transforming scientific breakthroughs into market-ready solutions, spin-offs, and industry partnerships. This role will establish scalable processes and pathways from discovery to application, focusing on advancing a chemical circular-economy innovation ecosystem.