freelance English-speaking jobs in Bielefeld

Develop a transferable AI system for high-resolution urban air quality prediction by combining physics-based CTMs with probabilistic deep learning methods like neural processes. Focus on data infrastructure, architecture design, and uncertainty quantification.

Support the Application Owner for the MACE Audit application. Manage the roadmap, drive development, and handle changes, releases, and testing. Ensure UI/UX and compliance with IT security standards.

As a Sales Representative in the Neurovascular Business Unit, you will build and maintain relationships with medical and non-medical professionals. Responsibilities include driving sales, identifying growth opportunities, and providing product and solution training to medical professionals.

Develop and maintain core product Isarsoft Perception using TypeScript, Python, and C++. Expertise in software architecture, Docker, Kubernetes, Linux, and video processing pipelines is required.

BESS Expert role at a renewable energy consulting firm. Responsibilities include leading BESS engineering projects, designing storage solutions, modeling performance, and supporting grid connection processes. Requires a degree in Electrical Engineering and 3+ years of BESS experience.

Head of Control, Electrical and Software Engineering to specify and program control systems for novel energy storage technology. Requires a degree in relevant engineering or Master Electrician qualification, strong programming knowledge, and experience leading technical staff.

24-month international trainee program with rotations through departments like Production, Engineering, Supply Chain, Sales, Finance, and HR. Participants contribute to strategic projects, collaborate with international teams, and complete an international assignment.

Manage client relationships for social media offerings, focusing on retention and growth. Execute and optimize paid social campaigns across Meta, TikTok, LinkedIn, and others. Requires 2-5+ years in paid social and fluency in German and English.

Warehouse Associate role at Amazon. Duties include order fulfillment, inventory management, and operating equipment like forklifts. Must be 18 years or older and proficient in German, English, or Arabic (SCN2 location only).

Resolve technical issues for home energy storage products in Italy. Maintain customer relationships, solve product problems, and provide technical training. Requires 2+ years in residential energy storage and technical knowledge of hybrid drives and batteries.

Finance Director for a PE-backed consumer commerce business. Modernize the finance function, ensuring integrity and compliance across accounting, tax, and customs. Lead transformation and act as a strategic business partner.

This role involves transforming complex hiring and recruitment campaign data into actionable decisions for Central Europe. You will measure employer branding performance, own end-to-end candidate lifecycle analytics, and provide optimization insights. Fluency in German and English is required.

Azure Cloud Engineer needed with 1-3 years of experience. Responsibilities include designing, deploying, and managing scalable solutions on Azure, including IaaS, PaaS, and Kubernetes. Must have strong Azure knowledge and German language skills.

Support product development in the digital in-house incubator, implementing innovative ideas for a climate-neutral energy ecosystem. Requires advanced studies in computer science and frontend development experience with TypeScript.

Chief of Staff to the VP Platform Engineering drives alignment and operational excellence across tech teams. This role supports strategic execution, leads projects, and enables the company's AI-first engineering shift.

Account Executive, SMB - DACH requires driving revenue expansion through relationship management with existing Docusign clients. The role involves upselling products, qualifying sales opportunities, and maintaining client loyalty in a fast-paced SaaS environment.

Mechanical Project Manager needed to own projects from conception to completion. Requires 5+ years' experience, a relevant 3rd level degree, and proficiency in budgeting, contracts, and scheduling.

Postdoctoral Scientist needed in ultra-short pulse laser physics/optical frequency combs. Research involves developing VUV frequency comb lasers and feedback control systems for 229Thorium spectroscopy. Requires a PhD and expertise in laser stabilization and frequency combs.

Freelance Asset Integrity Consultant to strengthen asset integrity programs and improve risk management in complex industrial environments. Requires expertise in asset integrity, coaching, and driving organizational change. German and English fluency is mandatory.

Sales Excellence & Enablement Manager focusing on Salesforce. Optimize CRM usage, processes, and data quality across teams. Drive sales methodology, lead management, and deliver role-based enablement programs. Requires strong Salesforce and RevOps experience.