freelance English-speaking jobs in Bielefeld

Senior Ruby (on Rails) Engineer to build technical safeguards and user-facing safety features for a platform connecting neighbors. Focus on threat modeling, abuse detection, and compliance with DSA/GDPR.

System Engineer Landing Gear is responsible for the architecture, design, analysis, and integrity of landing gear systems. Requires a Master's degree in aeronautical engineering and 5+ years in the aeronautical industry with EASA CS23 experience.

Own Subscriptions data products, establishing data contracts and quality practices from the ground up. Requires strong dbt skills, expert SQL, and experience building end-to-end production data systems.

Develop innovative beverage applications with a focus on taste optimization and sugar reduction. Translate concepts into market-ready solutions, especially for fiber- and protein-enriched beverages.

Drives regional labor relations strategy across Central & Northern Europe. Acts as principal advisor on high-impact matters, leading negotiations, restructurings, and M&A processes while ensuring legal integrity.

UX Researcher needed for 21 months to own research for data analytics solutions. Plan and conduct user research with German-speaking customers, analyzing findings into actionable insights for product decisions. Requires relevant degree and proficiency in German and English.

Steel Fabricator/Construction Mechanic role requires experience in assembling large welded steel structures from drawings. Responsibilities include fitting, aligning, and handling heavy components. B2 German skills are required.

Software Engineer for Simulation UI Systems. Define and develop software using C++ & Qt/QML for control and training stations. Requires studies in CS/Software Engineering and experience in Informatics.

Support GTM strategy in Germany by executing sales, marketing, and operational initiatives. Build AI-powered workflows, manage outreach, and support event operations. Requires German (C2/native) and business fluent English.

The Head of Legal oversees all legal matters for Ruhr Oil, providing support across the organization. Responsibilities include drafting and negotiating contracts, offering legal advice, and managing litigation. A qualified German lawyer is required.

German Affiliate Quality Director & Responsible Person to establish and maintain the QMS, ensuring compliance with German and EU GDP. Leads the German quality function, managing operations and regulatory responsibilities. Requires 10+ years of pharma quality experience.

Define and implement the global real estate strategy for a leading agricultural solutions company. Lead portfolio planning, manage global transactions, and advise senior leadership. Requires 10+ years in corporate real estate.

Risk Manager in a regulated e-money institute focusing on structured risk management within digital assets. Responsibilities include risk framework development, new product assessments, and technology risk analysis under MiCA and DORA. Requires 4-6 years of risk experience.

Software & Operations Engineer to support the full lifecycle of mission-critical software for satellite operations. Requires a degree in a related field, Java/Python skills, and experience with Linux, Docker, and Git.

Senior Tax Analyst drives direct tax compliance for Amazon's EMEA entities. Responsibilities include preparing foreign income tax returns, provisions under IFRS/Local GAAP, and supporting audits while driving automation initiatives.

Senior FP&A Controller focused on Finance Digitalization. Responsibilities include financial reporting, budgeting, performance analysis, and leading data solutions enhancement using Looker and Power BI. Requires 8-10 years in FP&A or Finance Transformation.

Assemble, integrate, and test technically advanced UGVs for serial production. This role involves mechanical and electrical integration, functional testing, and providing shop floor feedback to improve manufacturing processes.

Clinical Sales Specialist supports sales teams and partners across Germany, Austria, and Switzerland. This role delivers applications, provides technical support, and creates training materials for Leica's solutions. Fluency in English and German is required.

Lead a workshop team of about 50 to ensure smooth premium vehicle refurbishing. Requires mechatronics technician training plus KFZ Meister qualification, management experience, and strong German skills.

Senior Accounting Expert prepares and consolidates financial statements under HGB and IFRS. This role involves daily accounting, SAP FI-GL expertise, VAT processes, and contributing to finance projects. Requires strong HGB/IFRS knowledge and SAP FI-GL skills.