freelance English-speaking jobs in Bielefeld

Lead and scale the Battery Control System (BCS) Product Team, developing reliable, high-performance systems for energy storage. Guide a cross-functional team of firmware, hardware, and testing experts. Foster a culture of clear ownership, pragmatic execution, and strong technical standards.

International Trainee program in Corporate Finance & Investment. Gain experience in investment opportunities, portfolio analysis, and country performance. Collaborate with national and international colleagues.

Senior Software Engineer will develop production-ready software for sophisticated, distributed systems powering modern railway passenger information solutions. Responsibilities include designing software architecture, building secure software, and collaborating with system engineering experts.

Shape and implement the employee relations, HR compliance, and risk management framework for Central Europe. Lead investigations, resolve issues, and advise leaders on challenging HR matters. Oversee key HR processes, including case management and policy development.

Leads a distributed team of engineers focused on resolving software defects and delivering bug fixes for open source software. Manages team performance, provides coaching and mentorship, and collaborates with other engineering teams. Requires experience with software development using C, C++, Go, Python, and version control systems.

Sets up and manages architecture in SAP IS-U, SAP S/4 HANA Utilities, SAP BTP, and non-SAP systems. Coordinates solution design and target architecture across projects. Advises IT Business Solutions management and other departments.

Lead a product pillar strategy for a critical product area, driving deep multi-product penetration across customer employee bases. Build and coach a product team to deliver unified, AI-enhanced, and scalable experiences.

Leads the development and maintenance of Photoroom's Rust-based real-time editing engine, including rendering, document models, and collaborative editing. Manages a team of engineers focused on low-latency, high-performance systems for mobile and web platforms. Sets technical direction and ensures engine reliability and performance.

Define system, data, and deployment architectures for AI solutions. Establish standards and patterns while architecting LLM/ML solutions with rigorous evaluation and safety. Design MLOps foundations for reproducibility and engineer for reliability, latency, cost efficiency, observability, and resilience.

Leads People strategy and strengthens the People Power function for the EMEA region. Acts as a strategic partner to EMEA leadership, supporting business transformation and managerial excellence. Designs and drives the HR transformation roadmap, accelerating digitalization and automation. Manages and guides the People Power team to align on new ways of working.

Intern in the CEO Office will work on international expansion, process automation, and operational excellence initiatives. Must have completed two internships in a fast-paced environment and be solution-oriented.

Trade Marketing Specialist supports the execution of marketing initiatives for key DACH retail and e-commerce partners. This role coordinates activations, develops account-specific toolkits, and ensures brand consistency across all channels.

Software Architect needed to design, develop, and implement software solutions. Responsibilities include defining technical vision, ensuring software quality and scalability, and providing technical leadership to development teams. Requires a Bachelor's or Master's degree in Computer Science or a related field and 5-7 years of experience as a Software Architect.

Solution Architect to design, implement, and consult on Microsoft Power Platform solutions. Requires expertise in Power Apps, Power Automate, Dataverse, Azure, and M365. Experience with Copilot Studio and emerging technologies is preferred.

As a Software-Architect, you will be responsible for solution and integration architecture, technology selection, and the development of architecture documentation. You will lead the development of a microservice architecture and support development teams in analyzing business requirements.

Senior Silicon Physical Design Engineer will develop multi-core in-memory compute SoCs. Responsibilities include synthesis, floorplanning, place-and-route, timing analysis, physical verification, and collaboration with architecture and RTL teams.

The GFZ is seeking a senior scientist to lead its Secondary Ion Mass Spectrometry (SIMS) user facility. Responsibilities include managing laboratory operations, advising scientists on SIMS applications, developing research strategies, and reporting on laboratory utilization. The successful candidate will have a PhD in the natural sciences, at least 5 years of experience with SIMS instruments, and expertise in mineralogy, crystallography, and sample preparation.

As an Applied AI Solutions Architect, you will be a technical advisor to large enterprises, helping them understand and integrate Claude into their technology stack. You will guide customers from discovery through deployment, leveraging your expertise to design scalable architectures and address complex business challenges.

Develop production-quality C++ software for industrial robots. Design and implement control stack components, collaborate on system architecture, and write tests. Requires 5+ years of C++ experience, hardware knowledge, and Linux proficiency.

Develop software components for helicopter simulations, integrate them into systems, and execute integration tests. Documentation creation based on project specifications is also required.