freelance English-speaking jobs in Bielefeld

Account Executive will build customer partnerships and run sales cycles for Laravel's commercial products. This role requires technical credibility, collaboration across teams, and the ability to thrive in an early-stage environment.

Transaction and Valuation Manager (f/m/d) will lead valuation workstreams, prepare performance analysis, and model financial scenarios for E.ON Group decisions.

Mitsui & Co. Deutschland GmbH seeks a Tax & Accounting Specialist to prepare tax declarations, maintain tax records, and assist with audits. Requires a Certified Accountant, Tax Specialist, or comparable certification, experience in tax, and proficiency in German and English.

Study Physician responsible for medical oversight of clinical trials from design to reporting. Requires MD degree, minimum 4 years clinical practice experience, and expertise in relevant therapeutic areas. Experience in pharma industry or CRO preferred.

Tutor students in the Xcool Lab, preparing and teaching experiments in molecular biology and chemistry. Provide guidance on experimental results and ensure safe working environments. Contribute to the development of materials and outreach programs.

As a Market Development Representative (MDR), you will generate qualified opportunities and drive new revenue growth in EMEA. Responsibilities include identifying new business opportunities, managing outbound prospecting, and scheduling appointments with potential customers.

As a Staff Engineer, you will set the technical direction for the Payroll Foundations team, ensuring accurate and reliable payroll processing, calculations, and workflows. You will solve complex technical challenges, lead initiatives across teams, and mentor other engineers.

Warehouse worker needed for various shifts (early, late, night). Duties include unloading, sorting, and transporting packages. Must be able to lift up to 15kg and stand/walk for extended periods. Must be 18 years or older and proficient in German and/or English/Polish.

Leads and manages commissioning and testing activities for photovoltaic (PV) projects, including grid connection and Battery Energy Storage Systems (BESS). Plans, coordinates, and documents the commissioning process, collaborating with subcontractors and stakeholders. Acts as the Responsible Electrical Person, ensuring electrical safety and compliance with standards.

Service Technician required for hotel technical systems maintenance and repair onboard cruise vessels. Experience in plumbing, mechanical systems, and hotel equipment essential. Minimum 8 years experience in plumbing industry, with at least 6 years on large cruise vessels. Fluency in English required.

IU International University seeks a Computer Science professor to teach and conduct research on-site at their Cologne campus. The professor will develop and lead lectures, supervise students, and contribute to the development of teaching formats. Applicants must have a doctoral degree in Computer Science or a related field, at least five years of professional experience, including three years outside of academia, and expertise in Software Engineering and Project Management.

Senior Copywriter/Concept Creative develops bold creative concepts for campaigns, branding, and digital experiences. Collaborates with art directors, designers, and production teams to bring ideas to life. Writes compelling concept decks and presentations, ensuring creative consistency across all touchpoints. Requires 5+ years of agency experience, strong German and English language skills, and expertise in developing brand narratives and big ideas.

The Director Medical Affairs Strategic Markets EMEA – Electrophysiology (m/f/d) will oversee the Medical Scientific Liaison (MSL) team supporting the G5 markets (Germany, France, UK, Italy, and Spain). This role provides medical and scientific leadership expertise in Electrophysiology and the management of patients in related clinical disciplines. The Director will report to the Senior Director, Medical Affairs – Electrophysiology and work closely with cross-functional teams to develop strategy and achieve business objectives.

Associate Legal Counsel will draft, negotiate, and advise on technology service agreements for AWS commercial customers in Germany and EMEA. The role provides legal counsel on product development, operational, security, compliance, and data protection matters.

Experienced software development team lead develops technical concepts and supports agile teams. Analyzes requirements, leads and coaches development teams, conducts code and architecture reviews, and collaborates with stakeholders.

Provides high-level administrative support to the Group CEO, managing complex international schedules, correspondence, and sensitive information. Ensures seamless daily operations, effective coordination, and the highest standard of executive support.

Production Engineer will provide technical support for safe, efficient, and high-quality operations in a state-of-the-art biorefinery. Responsibilities include troubleshooting, optimizing plant performance, and collaborating with teams to ensure smooth operations.

Lead a research group focused on next-generation control strategies for prosthetics and orthotics. Develop and maintain a multi-year research roadmap, investigate and validate novel control architectures, and design experimental validation studies. Collaborate with internal and external partners to ensure research outputs are grounded in real user needs and compatible with regulatory requirements.

The BSZ seeks a DevOps Engineer to establish and expand a discovery index. Responsibilities include coordinating Kubernetes and SolrCloud infrastructure, developing SolrMarc-based processes, and integrating relational data storage. The ideal candidate has experience operating Linux environments, Kubernetes, and Apache Solr.

Interim Chief Financial Officer to lead finance organization through transformation and integration. Oversee financial planning, reporting, treasury, and tax activities. Drive finance transformation initiatives and ensure compliance.