freelance English-speaking jobs in Bielefeld

SAP SD Consultant needed for S/4HANA implementation. Focus on end-to-end SD design, configuration, and delivery with strong FI and MM integration expertise. Experience in global rollout programs and stakeholder engagement required.

The Mammography Cooperation Group seeks a part-time IT Assistant (20 hours/week) to provide network administration and IT support. Responsibilities include maintaining the local network and server infrastructure, supporting employees with hardware and software issues, and managing user accounts. Experience in IT administration, Windows operating systems, and Office/365 is required.

The System Administrator for Basic Infrastructure Services will plan, configure, and administer infrastructure at the middle service level. Responsibilities include monitoring IT processes, analyzing malfunctions, troubleshooting, and supporting the planning, design, and documentation of IT operating procedures. The role requires a university degree in IT or comparable qualification and several years of relevant professional experience. Knowledge of Active Directory, Domain Name Service, NTP, load balancers, endpoint security, and automation tools is desired.

The Chief Information Security Officer (CISO) for the International Family Care & Professional (IFP) Joint Venture will lead the global cybersecurity strategy, advise senior leadership on cyber risks, and drive enterprise-wide security transformation initiatives. The CISO will oversee risk assessments, audits, and compliance with global regulations, as well as lead global security operations, incident response, and threat intelligence. This role requires extensive experience in information security, proven success leading security programs in Fortune 500 environments, and expertise in hybrid cloud environments, complex supply chains, and global regulatory landscapes.

Senior Full Stack Developer will design, implement, and maintain a big data platform. Responsibilities include feature development using Java, Spring Boot, and Vue.js, system architecture development, platform operation and optimization, and mentoring junior developers. Requires 5+ years of software development experience, strong Java skills, and experience with front-end frameworks, databases, microservices, and event streaming platforms.

Lead, coach, and develop the Talent Acquisition team, driving data-driven hiring and managing high-volume recruitment projects. Own international hiring initiatives, focusing on the US and Middle East markets. Manage the full recruitment lifecycle and collaborate with HR on onboarding, employer branding, and people processes. Act as a trusted advisor on talent strategy and organizational growth.

Manage market research projects, support clients, develop study concepts, prepare reports and presentations, and advise on study results interpretation.

Leads and develops a supply chain team, oversees end-to-end supply chain processes, and negotiates contracts with suppliers.

Aerodynamic Engineer will design and simulate advanced turbocharger components, including volutes, turbine wheels, and guide vanes. Responsibilities include running high-fidelity simulations, generating turbine maps, and developing 1D/3D simulation methods. Requires a PhD or Master's degree in Mechanical Engineering or similar with a focus on turbomachinery or aerodynamics and 3+ years of experience in automotive or related engineering fields.

The Munich Data Science Institute (MDSI) and the Collaborative Research Center LETSimmun (TRR 338) seek a Data Steward to support research data management. The Data Steward will design and implement data workflows, support data collection and curation, and coordinate research data management activities across collaborating universities.

Sales Operations Specialist supports sales team with operational activities, project coordination, reporting, and customer support. Requires experience in automotive sales operations, fluency in English, and strong Excel skills.

System Safety Engineer (m/f/d) for Airbus Defence and Space in Manching. Lead and conduct safety assessments, risk analyses, and common-cause analyses for military aircraft and systems. Manage safety requirements, evidence, and procedures. Interface with internal and external stakeholders.

The Wholesale Credit Manager manages and safeguards the global wholesale financing portfolio for WIRTGEN GROUP dealers. This role ensures dealer financing adheres to credit standards, supports dealer operations, and mitigates credit risk.

Designs and implements modern collaboration and digitization solutions based on the Microsoft 365 product range. Further develops platform architecture and digitizes business processes in cooperation with specialist departments. Conducts change and adoption management, including training and communication.

Develop and implement automation processes for cloud software and services, including CI/CD pipelines and infrastructure as code. Design and manage cloud infrastructure with a focus on scalability, security, and high availability. Deploy, operate, and optimize Kubernetes infrastructure, ensuring scalable and secure containerized deployments. Integrate security measures and compliance checks into cloud infrastructure and the software development process.

Lead the European Energy procurement category, shaping and executing energy strategies across sites. Deep energy sector knowledge, including renewables, sourcing models, and market trends, is essential. Experience in energy procurement, strategy, or a technical/market-focused energy role is required.

Backend Application Engineer needed for the development and integration of ERP and CRM systems (Dynamics 365, Navision/Business Central). Responsibilities include designing service-oriented solutions, developing containerized applications, and supporting the transition to a modern architecture. Requires experience in ERP/CRM development, cloud services (Azure preferred), and programming languages like C# and TypeScript.

Product Manager (f/m/d)* SEO/GEO will optimize the organic visibility of Engel & Völkers' website, impacting product development across 35+ countries. Drive and implement SEO strategies, develop product plans and roadmaps, and continuously assess and improve product performance in search interfaces.

Software Architect & Team Lead will implement product vision, follow industry trends, and lead a team of 15+ developers. Requires a Master's degree in Computer Science or comparable field, several years of experience, and strong knowledge of Java, JavaScript/TypeScript, C++, and Rust. Fluent English and B2+ German required. Reports directly to the CTO.

The Max Planck Society invites outstanding researchers to apply for a postdoctoral position within the Max Planck Postdoc Program. Successful candidates will have applied to a vacant Project based Postdoc position offered by a Principal Investigator at a participating Max Planck Institute. The program offers a minimum three-year contract and a mentoring program.