freelance English-speaking jobs in Bielefeld

Lead Software Engineer will design, develop, and maintain observability platform components using Prometheus, Thanos, Grafana, OpenTelemetry, and streaming telemetry systems. Requires strong programming experience in Go, Python, or Java and expertise with the Prometheus ecosystem and OpenTelemetry.

Fitness Coach needed to deliver and implement workplace health and fitness programs, provide exercise guidance, and lead fitness classes. Must have a Trainer B license, relevant educational background, and excellent German and English communication skills.

Finance Project Manager to lead and deliver finance-related projects, including process optimization, system implementations, and compliance initiatives.

Senior Full Stack Engineer to design, develop, and maintain full-stack applications using React, TypeScript, Redux, Node.js, and AWS Lambda. Collaborate with Product, Design, and other engineering teams to deliver and maintain a modern public transportation control center software.

Accounts Payable Accountant responsible for invoice processing, vendor master data, VAT transactions, payment runs, and monthly closing entries. Requires commercial training, financial accounting experience, and proficiency in SAP and MS Office.

Develop and implement sales strategies to acquire new clients in the areas of EPC, IPP, and new markets (UK and Scandinavia). Sell and consult on power control, monitoring, and hybrid energy management solutions. Collaborate with Proposal and Product Management, and represent the company at trade fairs and congresses.

Designs and develops sophisticated C++ components for medical software solutions, focusing on performance, stability, and scalability. Architects and implements complex multithreading and parallelization concepts. Collaborates with Architecture, QA, and Product Management to deliver robust solutions. Analyzes and optimizes codebases, identifies performance bottlenecks, and elevates system performance.

Technical Support Engineer provides on-site installation, maintenance, and repair of company products. Conducts customer training, manages service records and inventory, and collaborates with sales to resolve issues. Requires a vocational qualification or relevant experience, English proficiency, and a driver's license.

Project Manager for the global Integrated Business Planning team within Corporate Development. Responsible for successful implementation of integrated business planning in Dr. Oetker markets and individual workstreams. Manages internal and external resources within the scope of the Integrated Business Planning program. Ensures project success through goal-oriented, efficient, and professional project management.

Manages service quality, process compliance, and resource allocation for construction and agricultural machinery. Builds and manages customer service centers, oversees department construction and personnel development. Requires a bachelor's degree, experience in construction machinery after-sales service, and fluency in English or Chinese.

Support technical team in laboratory automation and digital solutions for life science applications. Assist with software testing, installation, and troubleshooting. Contribute to project coordination and documentation.

Project Manager to lead M&A execution and post-merger integration for a new medical cannabis company. Responsibilities include managing transaction timelines, coordinating stakeholders, and leading integration across operations, finance, regulatory, systems, and commercial workstreams.

Full-Stack Web Developer will maintain and improve the citizenscience.eu platform using Python and Django. Responsibilities include developing features, managing infrastructure, ensuring secure deployment, and collaborating with the team.

As Visual Merchandise Manager for the Germany South region, you will lead and develop a team of District Visual Merchandisers to ensure consistent, commercial VM execution across approximately 200 stores. You will collaborate with Sales, Commercial Planning, and Marketing to drive targeted KPIs and ensure seamless implementation of VM strategies.

HR Intern will gain hands-on experience across human resources functions including employee relations, training, compensation, and workforce analytics. Assist with internal communication, develop training plans, and support employees with daily queries.

Technical Assistant (TA) supports innovation and research activities in proteomics workflows. Responsibilities include assisting with LC-MS measurements, executing experiments, preparing samples, and maintaining equipment. Requires a scientific background, hands-on lab experience, and proficiency in English.

The Consumer Lending Product & Pricing Manager will manage the strategic direction of lending products, optimizing volumes and margins. This role requires a deep understanding of the German consumer lending market and experience in product and pricing management.

Business Analyst (m/f/d) with experience in process design, requirements engineering, and reporting for a semiconductor company. Must have experience in Workday or HCM transformations and global environments.

C++ Systems Engineer to design and develop multi-threaded systems for real-time processing. Experience with CUDA, multithreading, and performance optimization required.

International SOS seeks a Registered General Nurse to provide in-person patient support and coordinate medical updates for U.S. military beneficiaries in European hospitals.