freelance English-speaking jobs in Bielefeld

Senior Product Designer to lead complex design initiatives for Lightspeed's POS system, focusing on the iOS experience for hospitality businesses. Requires 5+ years of product/UX/UI design experience, mastery in at least one design area (interaction design, systems thinking, native platform craft, or research integration), and experience designing native iOS applications. Must be able to drive consensus, communicate effectively, and have a strong visual design sense.

Implement and configure Workday Employee Document Management for global customers. Lead workstreams, understand customer requirements, and design solutions. Support junior team members and share knowledge.

Lead a team in executing creative concepts from film and post-production to various channels. Manage the full production process, lead and mentor a creative team, and collaborate with stakeholders. Proven experience in creative production and leadership skills are required.

Research Assistant (Ph.D. Candidate) to design, develop, and implement algorithms and models for knowledge-enhanced large language models. Responsibilities include prompt and context engineering, adapting language models, and conducting experiments to evaluate performance.

The Helmholtz Centre for Geosciences seeks a Head of Section to lead and develop digital tools for Earth system sciences. Responsibilities include strategic planning, personnel management, and project acquisition. The successful candidate will have a scientific degree, experience in agile project management, and strong leadership and communication skills.

Equipment Maintenance Technician needed for preventative and unplanned maintenance, machine upgrades, and process machinery support. Must have 2+ years of experience in industrial maintenance, troubleshooting, and experience with software controlled electro mechanical systems.

Provides administrative, logistical, and operational support to a German office of a multinational company. Manages office operations, mail, government affairs, visitor support, expense reimbursement, and employee assistance. Requires fluency in German, English, and Mandarin Chinese.

Buena, Germany's third-largest property manager, seeks a Technical Recruiter to develop and execute recruiting plans for entrepreneurial full-stack talent. The role involves collaborating with leadership, understanding hiring needs, and enhancing recruiting processes.

Internship focused on developing and applying physiologically based pharmacokinetic (PBPK) models using a high-throughput framework to support next-generation risk assessment (NGRA) of environmental compounds. Requires good working knowledge of R programming language.

Stryker seeks an experienced Capital Sales Account Executive to drive sales of high-value capital equipment in Germany. You will manage existing accounts, identify new business opportunities, and lead complex sales cycles.

Leads the execution of complex coating system projects, translating customer requirements into technical solutions and managing projects from order intake through commissioning.

Banqueting Manager leads large-volume conference and banqueting operations in a major event hotel. Manages a sizeable team, ensuring excellent guest service and efficient execution of events. Requires several years of experience managing banqueting operations in a large hotel or event venue, strong leadership skills, and fluency in German (C1) and English.

Technical Project Manager for Solar PV & BESS projects. Manage projects from concept to financial close, ensuring technical feasibility, optimized design, and compliance with standards. Experience in EPC tendering, technical evaluation, and project development required. Fluent in German and English.

As Release Engineer / Technical Lead for AI/ML initiatives, you will ensure safe and compliant release of AI-powered software features into Ambu's Endoscopy Systems. You will drive technical maturation, integration, and release of AI software, own design control deliverables, and ensure compliance with relevant standards and regulations. You will collaborate with a global team to deliver innovative AI solutions.

AI-Driven Cross-Border E-commerce Intern will support European market projects, conduct market research, analyze user needs, and assist with product and operations decisions.

Scientist II will conduct physical testing of medical devices and materials, manage client projects, and prepare technical reports. Requires a degree in a scientific or engineering discipline or relevant industry experience, fluency in German and English, and strong analytical and communication skills.

Designs, executes, and interprets experiments to advance drug substance process development for live biotherapeutic products. Focuses on both upstream and downstream processing activities, including fermentation optimization, scale-up, and lyophilization. Coordinates technical activities with external CDMOs and vendors.

Gain insight into the finance function of a leading consumer goods company. This internship offers the opportunity to work on diverse projects, such as analyzing competitors, supporting new product launches, and improving cost competitiveness.

Experienced EHS professional to oversee daily safety standards on a construction site in West Germany. Ensures compliance with project-specific EHS plans, statutory requirements, and client requirements. Conducts safety inductions, monitors site compliance, and manages work permits. Requires Certified Safety Specialist (SiFa) certification and construction experience. Fluent German required, additional languages a plus.

Leads and develops international verification and validation teams, defining and executing a long-term strategy for testing and laboratory excellence. Drives adoption of advanced testing technologies and establishes global standards and best practices. Partners with engineering, product management, and quality teams to support innovation and product development.