freelance English-speaking jobs in Bielefeld

Operate and monitor modern production equipment to ensure safe and smooth processes. You will run machines according to specifications, monitor parameters, and inspect products for quality compliance.

Experienced Regional Sales Director needed to lead the DACH operation for an international digital content and technology solutions provider. Requires sales leadership in the DACH academic market, fluency in German, and experience in EdTech or SaaS.

Mechanical Development Engineer to shape UAV structures and tooling using CATIA V5. Responsibilities include prototyping, subsystem integration, and developing manufacturing processes. Requires a relevant engineering degree and 2+ years of CAD experience.

Manage daily accounting operations and lead the local accounting team. Coordinate monthly, quarterly, and annual closings under IFRS and German GAAP. Expertise in SAP S/4HANA and financial reporting is required.

Join Data-Warehouse GmbH and work on high-security, mission-critical projects at the forefront of modern technology. As part of an international team, you will contribute to systems where security, reliability, and quality truly matter.

Lead vehicle design and integration for defense-tech UAV platforms. Own vehicle architecture, aerodynamics, and structural design from concept to production. Requires MSc/PhD in Aerospace/Mechanical Engineering and 7+ years in UAV development.

Lead end-to-end orchestration architecture for the IRIS2 5G-NTN multi-orbit satellite system. Responsibilities include technical governance, dependency management, and aligning roadmaps across complex network domains.

Sales Account Director to drive commercial growth for an intelligence technology vendor across the DACH region. Focus on new business and expanding strategic relationships with public sector, government, and law enforcement customers.

Own platform-level optimization for LLM inference, focusing on quantization, KV-cache, and serving architecture. Requires strong Python/PyTorch skills and experience with inference stacks like vLLM or TensorRT-LLM.

Design and optimize AI/ML infrastructure, including GPU clusters and distributed training environments, across cloud and on-premises setups. Write code, manage CI/CD, and own InfraOps/MLOps monitoring.

M&A Associate supporting the Technology group in a global investment bank. Responsibilities include supporting new business development and advisory engagements, evaluating financial statements, and analyzing acquisitions and divestitures. Requires advisory/Corporate Finance experience.

Senior Charter Sales Executive develops new business and manages client portfolios in Germany. Responsibilities include managing the full sales cycle, creating tailored charter solutions, and coordinating flights. Requires 3+ years in aviation sales and fluency in German and English.

Lead an architecture team driving SaaS modernization for a leading European healthcare software company. Own the roadmap for cloud, security, and AI-native architectures while transforming complex legacy systems.

Maintain and update product master data, manage product information, and coordinate processes with internal teams. Support product launches and ensure data quality across all channels. Requires commercial training or comparable experience.

Data Center Engineering Operations Technician responsible for best practice systems and problem resolution on data center electrical and mechanical infrastructure. Requires hands-on work with M&E systems, safety standards, and continuous improvement.

Head of Engineering provides strategic and operational leadership for all engineering functions at a biopharmaceutical manufacturing site. Responsibilities include overseeing maintenance, facility management, and ensuring compliance with quality and cGMP guidelines.

The innovative ideas and devices that are advancing humanity all begin with inspiration, research and development. KLA focuses more than average on innovation and we invest 15% of sales back into R&D. Our expert teams of physicists, engineers, data scientists and problem-solvers work together with the world's leading technology providers to accelerate the delivery of tomorrow's electronic devices.

Senior Consultant advises international clients on energy transition challenges using quantitative modeling and economic analysis. Responsibilities include modeling power markets, system planning, and developing solutions for grid integration.

Senior MSAT Manager for Packaging ensures global technology transfer and MSAT execution. This role requires technical expertise, driving compliance, and leading cross-functional projects in the pharmaceutical sector.

Area Manager (Manager II, Operations) leads site operations to ensure efficient order fulfillment. Responsibilities include driving safety and quality culture, analyzing performance, and overseeing process improvements. Requires people management and data analysis experience.