freelance English-speaking jobs in Mannheim

Edit, translate, and refine German language content for AI training. Collaborate with AI trainers to localize language models. Evaluate AI-generated German text and contribute to model improvements.

Leads and manages the accounting function for the Straumann Turkey organization, ensuring compliance with Turkish GAAP, IFRS, tax regulations, and corporate policies. Oversees financial closings, statutory accounting, tax compliance, and financial reporting. Manages relationships with external stakeholders and drives process standardization and automation. Leads and develops the local accounting team.

Futury connects aspiring founders with early-stage startups seeking co-founders in business development, sales, marketing, finance, operations, or strategy.

Prototype Engineer to lead early-stage battery and power system development. Responsibilities include fabricating prototypes, executing design modifications, and supporting scaling to small series. Requires hands-on prototyping expertise, CAD proficiency, and strong battery fundamentals.

Lead and develop X FAB's photonics activities, focusing on silicon photonics, heterogeneous integration, and optical device development. Manage multidisciplinary teams, define technology roadmaps, and drive strategic partnerships.

IU International University seeks a professor (m/f/d) for Cyber Security, starting October 1st, 2026. Responsibilities include teaching, developing lectures, and supervising students. Applicants must have a doctoral degree in Cyber Security or a related field, at least five years of work experience, including three years outside of academia, and publications or projects demonstrating expertise.

Supports the translation of learning materials, working across teams in an agile environment. Assists with content management and machine translation systems.

Marabu Airlines is seeking experienced Cabin Crew for future opportunities starting Winter 2027. Applicants must have a valid EASA Cabin Crew Attestation, be at least 18 years old, and have the right to live and work in Germany and the EU. Fluency in English is required, and German language skills are welcomed.

Copywriter to create high-performing UGC scripts for paid social campaigns across TikTok, Meta, and other short-form platforms. Develop social-first concepts and video structures designed for conversion. Proven experience writing for social-first video content and creating UGC scripts is required. Portfolio of relevant UGC/organic social work is necessary.

The US Sales Representative will identify, develop, and onboard clients requiring US services. This role involves managing leads, communicating service offerings, and supporting the sales onboarding process.

The Institut für Herz- und Kreislaufphysiologie at the University Medical Center Göttingen seeks a Postdoc to study the functional role of β-adrenergic receptors in cardiomyocytes and their inter-organ communication with the brain. The position is limited for 2 years with the possibility of extension.

The U.S. Consulate General in Frankfurt seeks a journeyman level locksmith-metal worker to perform scheduled and unscheduled preventive maintenance and repair work on mission buildings and facilities.

Experienced English Language Teacher needed to deliver in-person classes to a young learner (A1.2 level) in Allerheiligen, Neuss. Must have C2 level English proficiency and minimum 2 years teaching experience with young learners.

Design, develop, test, and maintain a Java-based online help and technical documentation platform. Develop and maintain responsive web components using Java, JavaScript, HTML5, CSS3, XML, and XSLT. Build, package, and release documentation and application updates using Jenkins CI, GIT, and related tooling. Provide technical support and continuous improvement for the Eclipse-based online help system. Contribute to the Documentation RAG project by supporting the design and implementation of Retrieval‐Augmented Generation pipelines. Develop and maintain supporting services and scripts in Python.

As Head of Treasury and M&A, you will build and lead a global Treasury function while executing the company's M&A agenda. You will define and implement a global treasury strategy, manage financial risks, and lead financing activities. You will also execute M&A transactions, including structuring, negotiation, and execution.

Senior finance position overseeing day-to-day operations for European manufacturing and sales entities. Responsible for financial control, performance management, cash flow oversight, and compliance. Requires strong collaboration with central teams and local management.

Manage strategic global travel agencies and suppliers, expanding business through our payment solution. Develop and execute customer-specific strategies, including sales, upselling, and relationship management.

Freelance Trainer/Author to deliver Industrial Cybersecurity Foundation (IEC 62443) and Professional (Level 2) training. Prepare and present complex topics, support digital learning formats, and continuously develop technical and didactic skills.

Structural Design Engineer (m/f/d) for Airbus Defence & Space in Manching. Design and validate composite/hybrid components and assemblies, ensuring product safety using design tools. Requires experience in military aircraft structures and proficiency in CAD tools (Catia V5, DDMS 3D Experience, VPM). Fluent English required, German advantageous.

Leads Solution Architecture across Europe, ensuring consistent, scalable, and performance-ready architectures for customer projects. Drives professional development and technical excellence within the Solution Architect team. Collaborates with Sales, Product, and Delivery leadership to shape technical approaches and unlock growth. Requires 8-12+ years of Solution Architecture experience in SaaS, cloud, data platforms, or enterprise-scale implementations.