freelance English-speaking jobs in Bielefeld

Edit high-converting paid social ads for Meta & TikTok. Create variations for testing and turn UGC into performance-driven ads.

PhD position in Industrial Electrochemistry focusing on CO₂ reduction through the development of high-performance membrane electrode assemblies. Responsibilities include designing, fabricating, and optimizing catalyst-coated electrodes, conducting electrochemical experiments, and analyzing data.

Process Engineer will manage production at a contract manufacturing partner and support the build-up of MicroHarvest's first industrial plant. Responsibilities include process optimization, troubleshooting, and collaborating with internal and external teams. Requires a degree in a relevant field and 3+ years of experience in industrial production or plant engineering.

Technical Assistant / Lab Technician to support ERC Starting Grant project "Restoring Balance: How axolotls regenerate otoconia for gravity sensing- (OTOREG)". The project investigates the link between development, regeneration and degeneration of the biocrystal (otoconia) in the vertebrate inner ear.

The FernUniversität seeks a Professor of Digital Educational Equity to analyze educational equity, encourage participation in diverse contexts, and promote digital spaces for engagement. The successful candidate will conduct research contributing to the Institute of Educational Science and Media Research's profile in Digital Education.

Expert customer support for eBay sellers using the Orange Connection Global SpeedPAK service. Troubleshoot shipment problems, handle escalations, and drive process improvements.

CocreateIP seeks a Candidate of European Patent Attorney to receive comprehensive training and mentorship. Responsibilities include preparing patent applications, analyzing property rights, and attending oral proceedings. Minimum requirements include a Master's degree in a scientific discipline, R&D experience, or partial qualification as an EPA. Strong English communication and teamwork skills are essential.

Research Associate (75% position) with opportunity to pursue a PhD in Innovation Leadership. Focus on international market expansion strategies, particularly in India and global markets.

Operations Supervisor needed for Munich site. Oversee daily warehouse operations, lead teams, ensure KPIs are met, and resolve operational issues. Experience in operations, leadership, and strong understanding of KPIs required. Fluent German and English, Chinese a plus.

Senior ASIC Design Engineer will develop digital modules and subsystems for semiconductor testing. Responsibilities include design, RTL coding, verification, and test pattern generation. Requires experience in Design for Test, BIST, and standard simulation tools.

Machine Learning Intern to develop ML models for fuel cells and electrolyzers. Focus on Reduced Order Modeling (ROM), control strategies, and predictive maintenance using time-series data.

Calibration and Test Engineering expert needed for electrical measurement and Instrument Calibration (DAQ systems) at HBK's calibration laboratory in Darmstadt. Responsibilities include developing calibration solutions, achieving DAkkS and ISO 17025 certification, and rolling out solutions to global calibration labs. Must be fluent in German.

Support Racing Engineer provides technical assistance to customer teams during testing and racing events. Responsibilities include preparing technical bulletins, on-site support, data analysis, and troubleshooting.

The Managing Director will lead the German subsidiary of a leading FMCG company, driving sales growth, developing the distribution network, and managing a high-performing team. The role requires strategic leadership, commercial expertise, and hands-on management, with full P&L responsibility and oversight of Sales, Marketing, and Finance.

Launch and operate the Stranger Soccer brand in Frankfurt. Responsibilities include securing partnerships, recruiting staff, driving player acquisition, and ensuring a high-quality game experience.

This PhD position at the Helmholtz School for Data Science in Life, Earth and Energy (HDS-LEE) focuses on developing machine learning algorithms to accelerate AC power flow computations. The successful candidate will extend existing neural network architectures to solve AC power flow problems of varying complexities and investigate hybrid ML-classical approaches.

The Scientific Computing Center at KIT seeks a Research Software Engineer / Scientific Researcher to ensure the sustainability of community Earth System Model (ESM) codes and enable their adoption on modern HPC systems. Responsibilities include performance optimization, porting ESM codes to heterogeneous architectures, and participating in model development and scientific research.

This 24-month graduate program provides structured experience in Controlling & Finance, including international placement. You will gain hands-on experience in financial processes, analyses, reporting, and process improvement. The program includes mentoring, feedback, and a clear development path leading to a key role after completion.

Lead, coach, and develop team members and Product Owners within the Gas and Power Logistics Solutions domain. Foster a culture of learning, feedback, and continuous improvement. Set clear expectations, provide regular feedback, and recognize performance. Act as a strategic sparring partner to Product Owners on product vision, prioritization, and stakeholder management. Support the definition and evolution of product strategies, particularly in the context of modernizing our gas and power logistics IT landscape. Ensure alignment across products, stakeholders, and teams to enable coherent prioritization and value delivery. Drive recruitment efforts and manage external service providers. Actively contribute to the ETRM management team by shaping priorities and strategy. Support resource and capacity planning, skill development, and cross-team dependency management. Drive continuous improvements in processes and agile practices. Foster close collaboration across Operations Units to support BA Markets’ digital transformation.

Senior Innovation Project Manager leads strategically important projects, overseeing planning, budgeting, risk management, and stakeholder management. Experience in international project or innovation management, including leading complex, cross-functional projects is required.