freelance English-speaking jobs in Bielefeld

Deliver meals to customers in Bielefeld using your own bike or scooter. Must be at least 18 years old, physically fit, and fluent in German or English.

The HR Controlling & Reporting Specialist will develop and maintain HR metrics, track HR costs, and prepare reports for HR and business leaders. This role requires a minimum of 3 years of experience in HR Controlling, strong analytical skills, and proficiency in MS Excel.

Design, implement, and optimize integration solutions across SAP and non-SAP applications. Lead the design and delivery of SAP integration solutions using SAP Cloud Platform Integration (CPI), API Management, and other middleware technologies. Collaborate with cross-functional teams to translate requirements into robust integration designs. Manage integration governance, ensuring system reliability and continuous improvement.

Designs, develops, and maintains SAP Fiori applications using SAPUI5, Fiori Elements, JavaScript, HTML5, and modern web technologies. Collaborates with backend developers, designers, and product owners to deliver end-to-end solutions. Integrates Fiori applications with SAP backend systems by consuming and developing OData services.

The Blockchain & Climate Institute seeks a volunteer Director of Programmes to develop and implement institute-level projects. The role involves coordinating with diverse teams, engaging stakeholders, and managing project execution.

Senior DevOps / Platform Engineer will own the reliability, security, and developer-friendliness of MAIA's platform. Responsibilities include infrastructure management (Hetzner, AWS, GCP, Azure), CI/CD pipelines, observability stack (Grafana, Loki, Sentry, Posthog), and security fundamentals.

Field Systems Engineer provides on-site technical support for aircraft seat actuation systems at customer manufacturing sites in Germany, the UK, and France. Troubleshoots electrical and mechanical issues, performs system-level and seat-level testing, and translates customer needs into technical feedback for engineering teams. Requires 2-5 years of experience and frequent travel.

Drive business growth and expand market presence in the Security Operations (SecOps) sector. Identify and cultivate relationships with key decision-makers and build strategic partnerships. Collaborate with cross-functional teams to develop and execute Go-to-Market strategies. Meet and exceed sales targets and revenue goals.

TikTok LIVE Operations team seeks a Gaming Influencer Operations Manager to discover, recruit, and support talented live streamers in the DACH region. This role involves creator onboarding, performance analysis, and strategic guidance to foster sustainable livestream careers.

Senior Manager, Steel will supervise construction & inspection of hull construction at Meyer Werft, Papenburg. Responsibilities include providing surveying, inspection, and commissioning services, ensuring environmental compliance, and supporting ship design, plan approval, commissioning, sea trials, and final acceptance. Requires a degree in a relevant engineering discipline, welding technology, and NDT inspections, as well as proven experience in the marine industry.

Software Engineering Intern to build AI-powered procurement infrastructure. Full-stack generalist with frontend affinity, experience in React and TypeScript, and a passion for AI. Contribute to end-to-end product workflows, from UX to backend systems, data pipelines, and cloud deployment.

Project Manager HW R&D leads complex, multi-functional projects with multiple stakeholders. Responsibilities include communicating project status, coordinating cross-functional teams, and developing project plans. Requires a Bachelor's or Master's degree, minimum 6 years of project management experience, and PMP or equivalent certification.

Develop and execute social media strategy to grow brand and engagement across all platforms. Create and curate video and visual content for various platforms. Engage with the community, track KPIs, and stay current on social media trends.

Principal Medical Writer to support full Clinical Study Report (CSR) writing for Phase 1 studies, protocol development, and regulatory module preparation (2.7.1/2.7.2). Requires strong writing skills and attention to detail for inspection-ready deliverables.

Electrical cold commissioning of measuring points, drive systems, and electrical consumers in power plants and industrial systems. Execution of I/O signal tests and related documentation. Review, adjustment, and calibration of field devices. Operation of process images and faceplates for loop check activities.

The German Cancer Research Center (DKFZ) seeks a data scientist/bioinformatician to analyze transcriptomic, genomic, and epigenomic data. Responsibilities include developing data analysis pipelines, performing large-scale data integration, and training students and postdocs.

Designs data pipelines for AI model training and evaluation. Implements reproducible training builds and sets up experiment tracking. Optimizes datasets for small LLMs and builds self-serve data tools. Requires 5+ years of experience in machine learning engineering with Python (PyTorch) and strong software fundamentals.

Leads global sourcing and metals management for the Battery Materials division, defining and executing the metals management strategy. Manages market risk and exposure, prepares credit proposals, and identifies key counterparties. Collaborates with the Vice President and global team to address key issues and develop strategies.

Hollister Co. Store Managers lead all aspects of store operations, including team management, customer service, sales, and inventory. They possess 2+ years of retail management experience, strong business acumen, and proven talent development skills.

Lead strategic engagements for clients, maximizing the business value of Microsoft Dynamics 365. Act as a trusted advisor, shaping transformation strategies and connecting ERP capabilities to measurable outcomes.