freelance English-speaking jobs in Bielefeld

Develop modern backend applications using Node.js and frontend applications with React JS. Design GraphQL APIs and implement new features for software solutions. Requires strong knowledge of Node.JS and ES 6 JavaScript.

Senior Medical Science Liaison in Northwest Germany covering gynaecological malignancies. Requires advanced scientific/medical degree and minimum 2 years of MSL experience. Conduct scientific exchange and support clinical trials. German and English fluency is required.

Support international employee travel and manage immigration processes. Review travel sheets, answer visa/ESTA questions, and maintain accurate documentation in Workday. Requires advanced student status, detail-orientation, and strong English communication.

Manage a product portfolio from cradle to grave for hardware products in transit systems. Drive launches, develop strategy, and maintain roadmaps across engineering and marketing teams. Requires relevant engineering degree and hardware product management experience.

Results-driven Sales Manager needed for Mid-Market, focusing on new business acquisition of Cendyn's cloud software in the Hotel industry. Requires proven SaaS sales success and strong pipeline management.

Support the purchasing team by corresponding with suppliers, preparing RFQs for electronic components, and maintaining records in SAP. Requires fluency in German and English, and a preference for business administration studies.

Establish and manage Enterprise Risk Management across the Falk Pharma Group. Develop governance, business continuity, and crisis management processes, reporting to the General Manager of Finance & Administration.

Power System Expert needed for EMT studies. Responsibilities include transient analysis, technical support, and developing PowerFactory examples. Requires Master's/PhD in Electrical Power Engineering and experience with EMT simulation tools.

Celonis Consultant needed for a client project. Responsibilities include Celonis consulting, configuration, implementation, and process mining analysis. Requires 2+ years of project experience in Celonis Process Mining and 2+ years in Celonis Data Integration.

Lead international quality control for cell therapy products in a matrix organization. Manage QC project timelines, technology transfer, and regulatory submissions globally. Ensure analytical testing comparability and drive risk management. Requires a Master's in life sciences with GMP QC experience.

High-potential Business Controller needed for Politape Group. Own end-to-end financial control and FP&A, including monthly closing, budgeting, and variance analysis. Requires 4-6 years of experience and fluency in English and German.

Engineer Quality Assurance focusing on Test Strategy & AI. Develop scalable test strategies, design automation tools, and promote AI in software quality. Requires experience in testing, C#/.NET, and AI-assisted development.

Partnerships Manager to grow the ATworld network across Germany and Europe. Responsible for signing new suppliers like hotels and coworking spaces, and developing strategic partnerships to drive member growth and revenue.

Lead and develop a team of seven software engineers while remaining hands-on with software development, design, and code reviews. Guide the team in building reliable software across edge devices and AWS services.

Support export control reviews, sanctions screening, and licensing processes. Maintain compliance documentation and participate in audits. Requires strong English and good German skills.

Own high-impact partnerships with leading drugstore retailers. Develop strategic customer plans, manage turnover, margin, and budgets. Requires experience in FMCG drugstore sales and strong negotiation skills.

Field Service Engineer commissions, trains customers, and maintains 3D printers in Europe. Requires technical background, experience with delicate mechanics/optics, and strong English skills.

Supply Chain Manager coordinates production and manufacturing from industrialization to delivery. Responsibilities include managing suppliers, monitoring KPIs, and ensuring quality compliance. Requires experience in production, supply chain, or quality within a technical environment.

Software Engineer C#/C++ focuses on designing and evolving software architecture for AWG products. Responsibilities include independent feature implementation, translating requirements, and maintaining high software quality. Requires 8+ years of R&D experience in C# and C++.

CMO role driving growth and monetization for a weight-loss app using AI agents and automation. Responsibilities include developing scalable acquisition and retention campaigns, optimizing pricing, and analyzing data to achieve measurable results. Requires 4+ years of experience using AI tools.