freelance English-speaking jobs in Bielefeld

Research Assistant in Digital Security at the University of Passau. Responsibilities include independent research for a PhD, contributing to projects in digital forensics and intrusion detection, and supporting teaching. Requires a Master's in a related field and strong cybersecurity knowledge.

Lead multidisciplinary engineering teams on major energy transition projects in Germany. Oversee high-voltage infrastructure delivery for BESS and hyperscale data centers, managing client relationships and engineering excellence.

Technical Sales Engineer for Motorsport Applications (F1/WEC/IMSA). Responsibilities include end-to-end market management, business development, and acting as the interface between customers, engineering, and production. Requires technical background and experience in technical sales.

Senior IT Service Delivery Manager to lead large-scale managed services for global clients. Responsibilities include ensuring service quality, operational excellence, and driving AI-led service transformation. Requires extensive experience in IT managed services and ITIL processes.

Manages the full customer order lifecycle, from order to cash, providing telephone and email support to local and international clients. Responsibilities include incident resolution, invoice control, returns management, and coordinating with internal departments. Requires 2+ years in Customer Sales Service.

Founding Principal Consultant role for accomplished leaders with 10+ years of senior operating responsibility. Lead senior advisory mandates, own client relationships, and set your own practice direction. Requires deep domain expertise.

Head of Payroll manages monthly payroll for Germany, Switzerland, Austria, and other countries. Responsibilities include stakeholder management, statutory reporting, and supporting the employee lifecycle. Requires German payroll expertise and knowledge of German employment law.

Senior Business Application Engineer for Polarion ALM. Configure, customize, and maintain Polarion ALM solutions to support engineering and compliance processes. Requires experience with Polarion ALM and technical skills.

Join the Execution Team to deliver workstream activities in the Pharmaceutical and Medical Device industries. Responsibilities include executing tasks per plan, ensuring quality, and collaborating with project teams. Requires relevant degree/experience and native German proficiency.

Define, implement, and develop global standards and governance principles for tax-related reporting. Embed compliance requirements across tax, legal, and financial reporting processes. Requires a university degree and relevant experience in project management and international tax law.

General Manager Design & Product Management for Cold Rolling Mills. Lead the Design and Project Management division, driving strategy, managing international staff, and overseeing global product portfolio integration. Requires technical degree and leadership experience.

Manage Road Freight RFXs, handling pricing, solution design, and end-to-end tender coordination. Requires logistics experience, strong analytical skills, and fluency in German and English.

Senior Executive Assistant supporting the CEO of a leading AI powerhouse. Own the CEO's calendar, inbox, and priorities, strengthening operating structure. Requires fluency in German and English.

This dual role leads sales for Europe and the Americas while driving global strategic sales. Responsibilities include defining regional and global sales strategies, managing performance, and leading high-performing, cross-regional teams.

Program Manager to direct and control program activities for Dornier Seawings. Requires a Master's in Aerospace Engineering or comparable field and 10+ years in related/avionics projects. Must be fluent in English and German.

Lead the creation and scaling of Nemetschek AEC Intelligence, transforming separate entities into a single, coherent business unit. Own performance, define market strategy, and drive platform integration for growth.

Sales Manager drives international business growth for radiopharmaceutical solutions. Responsibilities include identifying new opportunities, securing contracts, and expanding customer base across various healthcare sectors. Requires relevant sales experience and knowledge of radiopharmacy.

Lead Business Analytics role requires 5+ years in Business Analytics or BI. Responsibilities include leading the team, improving Power BI dashboards, and supporting the Microsoft Fabric data platform. Must have strong SQL and data pipeline experience.

Senior leader needed to govern data center construction programs across Germany. This role provides portfolio-level delivery governance, strategic direction, and senior client interface for mission-critical projects. Requires 10+ years in large-scale construction.

Lead global HR strategy locally, managing the employee lifecycle from talent attraction to retention. Provide expert guidance on employee relations, performance, and organizational design while driving a high-performance culture.