freelance English-speaking jobs in Bielefeld

Postdoctoral researcher to join an interdisciplinary research program focusing on early lung cancer detection and biological characterization of pulmonary nodules. Responsibilities include data integration, pattern discovery, biomarker identification, and translational research.

Danish-speaking Sales Executive to develop and manage advertising strategies for Danish businesses using Google Ads and YouTube marketing solutions.

Service Technician provides technical support for corrective and preventive maintenance of PLC/CNC machines. Executes modifications, supports installations, and documents technical issues. Requires at least two years of experience with PLC/CNC machines and fluency in German and intermediate to advanced English.

Provide comprehensive technical consulting on electromagnetic compatibility (EMC) from concept to product approval. Analyze electronic systems to identify and mitigate EMC risks. Plan, conduct, and evaluate EMC pre-compliance tests. Collaborate with client development teams on design decisions and EMC strategies.

Experienced CNC Grinder (Schleifer / Rüster) needed for metal and bearing manufacturing. Set up, operate, and maintain CNC grinding machines. Document production data, perform inspections, and ensure adherence to quality standards.

UX Designer focused on design systems. Develops, maintains, and advocates for a scalable design system across multiple products. Collaborates with stakeholders to ensure design system adoption and consistency. Requires 5+ years of UX/UI experience with a focus on design systems and mastery of Figma.

Senior Finance Manager to independently manage financial operations. Experience in German accounting and tax regulations, DATEV, and financial analysis required. Fluent in German and English.

Working student in Innovation-Formulation R&D to contribute to the development of innovative cosmetic products. Requires a scientific education (Chemistry/Natural/Material Science), prior lab experience, and fluency in English.

Lead a team of 6 in growing Opinary's publisher portfolio by onboarding new and expanding existing partnerships. Develop business opportunities for conversational formats and expand publisher usage of first-party data.

Dealer Development Lead will act as the primary point of contact for German dealerships, monitor sales performance, and provide support to improve results.

Design, build, and maintain AWS-based infrastructure for EVENTIM's application and data platforms. Implement IaC using Terraform/OpenTofu and develop/optimize CI/CD pipelines. Operate observability stacks and collaborate with teams to drive scalability, automation, and compliance.

Senior Operations Lead will ensure operational excellence across all touchpoints of live sports data production. Responsibilities include driving operational workflows, managing scout training and onboarding, overseeing quality and process excellence, and serving as a central coordination point for the leadership team.

Experienced National Tax Manager needed for ContiTech's German entities. Manage and coordinate all national tax matters, ensuring compliance and driving process improvements.

Research Assistant (f/m/d) to collaborate on research projects, contribute to publications, and present findings at seminars and conferences. Must have a postdoctoral research profile in mathematical statistics, nonparametric statistics, nonparametric Bayesian methods, and the mathematical foundations of machine learning.

Lead and manage customer-facing software projects, acting as the central interface between customers, software teams, and product management. Deliver projects on time and to quality standards while representing Quantum Systems' software solutions.

Senior Application Engineer needed for valve seat inserts, valve guides, and related engine components. Drive projects from inquiry to customer approval, lead testing, and collaborate cross-functionally.

Experienced real estate investment professional sought to define and execute investment strategy, lead transactions, and manage portfolio performance.

Drive Workday's AI Talent Suite growth by selling a "Human + AI" vision. Position HiredScore, Paradox, and Workday Recruiting to achieve Total Talent Acquisition. Diagnose customer needs and prescribe AI solutions, competing against CRM systems. Manage complex sales cycles and collaborate with Account Executives.

Acquire and monetize high-volume traders within the Exchange. Customize solutions and incentives for high-value customers. Maintain ongoing contact with VIP clients, track feedback, and recommend product improvements. Attend conferences and community events to engage with potential VIPs.

Leads and develops a Billing Operations team, ensuring high performance and a payment collection rate above 98%. Oversees invoice collection, manages complex cases, and collaborates with Finance, Sales, Renewals, and Customer Success teams.