freelance English-speaking jobs in Mannheim

Postdoctoral Researcher to develop a transferable AI system for high-resolution urban air quality prediction. The role combines physics-based chemistry transport models with probabilistic deep learning methods, focusing on NO2, PM2.5, and UFP prediction.

Deliver groceries to customers efficiently by e-bike or e-scooter. Meet and exceed delivery targets while providing exceptional customer service. Earn at least €13.90 per hour plus tips.

Lead international marketing and growth for WSCAD, defining the "Engineering Intelligence" category. Own the full funnel, drive demand, and translate complex tech into business value. Requires German and English fluency.

Primary library technician managing diverse collections, directing branch operations, and assisting patrons. Duties include cataloging, circulation, and running programs. Requires C1 English and A1 German.

Backend Software Developer to build AI-powered energy management solutions. Develop and enhance backend services and REST APIs using Java, Kotlin, and Spring Boot. Requires 2+ years of experience and knowledge of relational databases.

Leads and develops a regional sales team across Central Europe & Nordics, driving profitable growth and managing top and bottom lines. Develops and executes regional growth strategies, builds strategic partnerships, and monitors market trends. Requires 15+ years of experience in sales, key account management, or business development within fragrance, ingredients, or FMCG industries.

Growth Marketing Intern role involves content creation, design, and event management for an AI tutor spin-off. Requires C2 German and fluent English, plus hands-on marketing experience.

Senior AdTech Manager to lead strategy, infrastructure, and operations for major automotive brands across Europe. Requires extensive experience in AdTech, Ad Operations, and leadership, with deep knowledge of Google Marketing Platform, The Trade Desk, and Meta.

Front Desk Associate role combining customer success, hospitality, and community building. Responsibilities include managing member relationships, driving satisfaction, and supporting daily operations. Requires strong communication and German skills.

Lead the European Sales organization strategically and operationally for a leading chemical logistics provider. Responsibilities include developing sales strategies, managing key accounts, and leading sales teams. Requires sales leadership experience.

Senior Business Development Representative will lead commercial growth across Germany, developing long-term partnerships with media companies. Responsibilities include driving revenue growth, identifying new opportunities, and building executive-level relationships.

Avionics Systems Architect drives complex, safety-critical projects from requirements to validation. Responsibilities include technical ownership, end-to-end engineering, and managing subcontractors. A relevant engineering degree and fluent English are required.

Head of Direct Procurement owns the function, shaping sourcing and supplier partnerships for physical products. Leads the German team, translating strategy into global execution while partnering cross-functionally. Requires 10+ years in strategic procurement.

Own front desk and office operations for a startup building unmanned systems. Manage visitors, meeting rooms, supplies, and external vendors. Requires fluency in German and English, and a service-minded, organized approach.

Systems Engineer to ensure stable, scalable operations and drive optimization of the CargoWise One application infrastructure. The role involves managing Microsoft Windows Server, IIS, and SQL Server on AWS EC2.

Provide strategic content leadership and editorial oversight to strengthen the visibility of CGIAR GENDER Accelerator evidence and innovations. Develop compelling narratives and thought leadership products.

Senior Software Engineer to shape the Flutter app for a major European soccer platform. Requires 8+ years experience, mobile expertise, and a full-stack approach using agentic engineering.

Reporting & Data Specialist for Airbus Operations. Design, develop, and implement reports/dashboards using tools like SAP BusinessObjects or Qlik. ETL data, analyze datasets, and ensure data quality.

Lead Omnex, an AI-native operating system for multi-channel e-commerce sellers, as Co-Founder & CEO. Own strategy, GTM, product iteration, capital raising, and team building. Requires founding experience and e-commerce expertise.

Drive the execution and delivery of complex technical product initiatives across engineering, product management, and supply chain operations. Coordinate teams across various departments, ensuring effective communication and project success. Manage project timelines, resources, and risks, ensuring projects are completed on time, within budget, and meet objectives.