freelance English-speaking jobs in Bielefeld

Senior Business Development Manager will conduct market research, develop leads, and negotiate contracts for electric drive products with European OEMs.

Investment professional to support investment performance across Germany with potential for European expansion. Responsibilities include sourcing and executing investment opportunities, portfolio oversight, capex project monitoring, and divestments.

As a Senior Product Analyst, you will collaborate with Product Teams to derive actionable recommendations from data, design and analyze A/B tests, and improve data quality. You will have several years of experience in a product analytics environment, strong SQL and Python skills, and experience with A/B testing and user behavior analytics.

Board-Certified cardiologist with 2+ years clinical research experience needed to drive growth of the IQVIA Cardiovascular portfolio. Develop innovative, data-driven solutions for Cardiovascular trials, Phases 1-3. Provide scientific and clinical expertise to internal stakeholders and customers.

Experienced SAP PP-PI/MES Integration Expert needed to support and optimize a complex manufacturing landscape. Focus on SAP PP-PI with strong integration experience, particularly with PAS-X and Werum ATLAS.

Senior Backend Engineer will design and develop detection & prevention tools for fraud within a real estate marketplace. Responsibilities include architecting scalable systems, modernizing the fraud stack, and implementing ML models. Requires experience with AWS, DevOps tools, and fraud detection.

Manages local warehouse and fulfillment operations, driving service performance and KPI continuous improvement. Oversees inbound/outbound processes, inventory management, and last-mile carrier capacity. Collaborates with cross-functional teams to optimize processes and improve customer experience.

PhD position in immunological research investigating the interplay of infections and autoimmunity in liver and bowel diseases. Applicants should have a scientific university degree and experience with cell culture, flow cytometry, and bioinformatics.

DevOps Specialist (CI/CD & DevSecOps) with 12-15 years of experience building and securing enterprise-grade delivery pipelines on cloud platforms (AWS/Azure/GCP). Expertise in ART CI/CD, Jenkins/Concourse, Git/Bitbucket, Maven/Gradle, Artifactory/JFrog, SonarQube, Terraform/Ansible, Prometheus, Grafana, ELK Stack, and Python/Bash/PowerShell. Strong DevSecOps experience including FOSS scanning, vulnerability detection, and secure SDLC automation. Proficiency with Agile/SAFe and JIRA/Confluence.

DevOps Engineer to maintain, automate, and enhance production environments supporting trading systems. Requires experience in energy, commodities, power trading, or financial trading.

Marketing Manager for a multinational technology company specializing in internet services and products. Lead and execute marketing projects, drive product marketing for AI initiatives, and plan events in Germany.

Experienced CFO or Finance Director sought for private equity-backed consumer and e-commerce companies in the DACH region. Responsibilities include financial leadership, performance management, budgeting, forecasting, and M&A support. Proven experience in similar roles and a strong understanding of commercial drivers are required.

Drive projects, design workflows using automation tools, and handle high-impact tasks to support the leadership team.

NovaTaste seeks a Compensation and Benefits Expert to implement global compensation strategy, manage compensation processes, and ensure legal compliance. The role requires expertise in job evaluations, salary increases, workforce planning, and incentive analysis.

PhD position at the Institute for Molecular Pathogenesis, focusing on host-pathogen interactions. The successful candidate will work on a DFG-funded project studying a host defense factor and its role in antimicrobial recognition and killing.

Senior C# Developer needed for designing, developing, and maintaining end-to-end software solutions. Focus on automation, hardware integration, and scalable applications. Requires experience with .NET, C#, SQL, APIs, and distributed systems.

Own and operate the commercial LiveOps strategy, including pricing frameworks, promotional cadence, and execution of a data-driven commercial calendar. Define and evolve the monetization roadmap, scaling subscriptions and exploring consumables, repeat purchase loops, and long-term ARPPU growth systems. Lead complex, cross-functional monetization initiatives across placements, clients, and geographies.

Robotics Field Technician installs and commissions robotic automation systems at customer sites nationwide. Provides customer training, support, and contributes to product development. Requires technical qualification in automation, mechatronics, electronics, or similar, experience with CAD and PLCs, and a willingness to travel.

Experienced Document Controller needed for data centre construction project in Frankfurt. Manage and control project documentation, ensuring accurate distribution, tracking, and filing.

Experienced HSE Manager / SiGeKo required for a large-scale data center construction project in Frankfurt am Main. Responsibilities include site inspections, ensuring compliance with HSE standards, coordinating safety activities, and preparing HSE documentation. Must have several years of experience in construction, data center projects, and international HSE standards. Fluent English required.