javascript English-speaking jobs in Bielefeld

Endocrinologist needed to fine-tune large language models. Responsibilities include designing clinical scenarios and evaluating AI responses for accuracy in endocrine medicine. Requires MD or equivalent with active practice and board certification in Endocrinology.

W2 Professorship in sports- and exercise-related health and social psychology. Responsibilities include teaching, research, and academic self-administration. Requires Ph.D., expertise in health/social psychology, and experience with funded projects.

Associate Sales Development Representative responsible for generating and qualifying high-quality leads for Account Executives across Germany. Duties include outbound outreach, lead research, and meeting qualification. Requires fluency in English and German.

Project Manager for construction/real estate managing mobility and energy projects. Requires technical studies, international project experience, and fluency in French, English, and German.

The Deployment, Associate configures, tests, and prepares POS and credit card equipment for deployment. Responsibilities include inventory management, order fulfillment, and device refurbishment. Requires strong German skills and attention to detail.

Technical Project Manager driving qualification projects for gas turbine components. Responsibilities include planning, monitoring supply chains, managing risk, and optimizing processes. Requires a relevant engineering degree and project management knowledge.

Delivery Station Warehouse Associate role involving receiving, preparing, building, wrapping, sorting, and transporting inventory. Requires ability to lift up to 15kg and proficiency in German and/or English.

Deliver groceries to customers efficiently by e-bike or e-scooter. Maintain a high level of customer service and consistently meet or exceed delivery targets. Earn at least €13.90 per hour plus tips.

Scientist for Bioavailability Assay Development supports active ingredient characterization using agrokinetic approaches. Requires M.Sc. in Biology/Biochemistry, strong hands-on molecular biology/biochemistry skills, and experience in organelle isolation.

Working Student Content & Creative Specialist helps produce and maintain marketing copy, social assets, and campaign material in German and English. Responsibilities include content management, event copy, and design using Canva, while utilizing AI tools.

Payroll Coordinator for a 12-month FTC role managing day-to-day payroll across various platforms. Responsibilities include statutory compliance, monthly approvals, and reporting. Requires French/Dutch or German skills with specific payroll experience.

Enrolled technical students in sales fields are sought for this Customer Service & Sales Internship. Candidates should have experience in customer interaction or sales, enjoy technical and sales topics, and possess strong German and English skills.

Postdoctoral Researcher role focusing on Biomedical Semantics, Ontologies, and LLM Integration. Responsibilities include designing ontologies, knowledge graphs, and semantic data models for integrating biomedical data with LLM systems.

Experienced Full stack Developer needed for AI Harness Codebase Hardening. Tasks include optimizing Python/Node.js backends, Dockerizing for AWS, and building TypeScript front ends from Figma designs. Requires strong full stack and cloud migration experience.

Financial Sales Advisor builds long-term client relationships, providing excellent financial advice. Responsibilities include analyzing products and understanding client financial circumstances. Requires interest in finance and sales, strong communication, and fluent English.

Working Student (m/f/d) to support the Marketing team in project management, social media management, and content creation. Responsibilities include managing communications overviews, assisting with marketing campaigns, and overseeing social media content.

Language Trainers seeks a native Serbian speaker or qualified teacher for a freelance, part-time role. The position involves one-to-one tutoring for beginners, requiring experience as a language teacher, translator, or interpreter.

Specialist Prototyping Carpenter needed to assist with structural design, planning, and installation. Responsibilities include completing repairs, installing fixtures, and ensuring quality woodwork. Requires completed apprenticeship, professional experience, and good English and German skills.

Shape and strengthen VAT governance in an international business environment. Provide expert German VAT advice, manage European VAT matters, and drive compliance across jurisdictions. Requires strong German VAT experience and SAP knowledge.

Own the full customer lifecycle for FactFinder in Italy, from winning new business through full-funnel selling to managing and growing accounts. Sell to eCommerce decision-makers, driving adoption and expansion. Requires 2-6 years in B2B SaaS sales with business-fluent Italian.