freelance English-speaking jobs in Mannheim

Postdoctoral Researcher position in electrochemical energy storage and material design. Focus on the project "USE-G" which aims to develop a circular economy for graphite materials in the European battery industry. Responsibilities include structural and electrochemical characterization of graphite electrode materials, establishing a chlorine treatment process for graphite purification, and collaborating with project partners. PhD in chemistry (or related disciplines) with a focus on inorganic chemistry/electrochemistry/chemistry/materials chemistry is required.

Develop and implement online marketing strategies for gardena.com, including content creation, SEO, and UX/UI. Manage international projects, collaborate with global and local teams, and optimize the CMS.

Global Marketing Communications Specialist will develop and execute integrated communication initiatives to strengthen A2MAC1's brand presence. This role manages A2MAC1's digital presence, leads content creation, and collaborates with global and regional marketing teams.

Senior AI Engineer/Consultant to establish AI-supported software development lifecycles for clients using agentic coding tools. Provides strategic consulting and technical expertise in AI integration within cloud architectures (Azure/AWS). Experience with modern agentic coding tools (e.g., GitHub Copilot) and cloud engineering practices (CI/CD, GitOps, IaC) is required.

Data Engineer (m/f/d) will build data products around customer feedback, develop and operate ETL/ELT processes, and automate data flows. Requires at least three years of experience building scalable data pipelines and data warehouse architectures, strong Python skills, and expertise in SQL and NoSQL systems. Cloud platform experience, ideally GCP, is also required.

Scientist (m/f/d) to lead the development, optimization, and scale-up of purification processes for nanobody/antibody-based therapeutic proteins.

Software Engineer installs, configures, and validates software in customer environments. Resolves issues, integrates with customer infrastructure, and provides field feedback. Requires a degree in a relevant field, strong C# skills, and experience with desktop/UI frameworks. Willingness to travel 60% is essential.

Drive the development of methods for optoacoustic data analysis, focusing on a portable mid infrared optoacoustic sensor for non-invasive blood biomarker detection. Collaborate with partners at the Karlsruhe Institute of Technology (KIT) to develop data analysis pipelines, signal processing, and inference methods.

This role involves delivering daytime and evening activities and events for guests at a holiday destination. You will plan, coordinate, and execute events, ensuring a fun and memorable experience for guests. Fluency in German and English is required.

Working student to support production and delivery of German language audio productions. Provides administrative and organizational support, tracks production milestones, and assists with talent booking and logistics. Must be enrolled in a German state-accredited Bachelor or Master program with at least 1 year of studies remaining. Fluent in English and German (C1 minimum).

Lead a team of data scientists and machine learning engineers, designing and implementing optimization algorithms for the Paid Search ecosystem. Translate data into production-grade products, driving HelloFresh's growth.

As an Enrollment Advisor, you will attract, advise, and enroll prospective students at XU Exponential University. You will achieve enrollment targets, provide program guidance, and build relationships with educational partners.

Manage financial processes within SAP FI/CO, including Controlling, Contract Accounts, General Ledger, and Accounts Payable. Execute projects, provide support, and collaborate with internal stakeholders.

The Head of Data Center will lead the planning, design, implementation, and ongoing development of the MPI-GEA Data Center. This role involves managing a team, developing data management workflows, designing and maintaining databases, and collaborating with researchers to ensure data availability and storage.

Improve delivery consistency and workflow maturity across agile teams. Coach Product Owners and Developers on backlog health, estimation techniques, and sustainable delivery pace. Identify and remove systemic impediments.

The Chief Actuary will shape the financial stability and strategic direction of Allianz Commercial. Responsibilities include orchestrating technical provision estimations, overseeing actuarial risk capital models, providing portfolio performance diagnostics, and collaborating with Finance functions. The role requires a deep understanding of actuarial requirements for an international commercial P&C portfolio, experience leading international workforces, and expertise in integrating AI into business functions.

The Applications Development Technician prepares, maintains, and monitors electrolytes, executes sample processing, and supports customer-specific sample creation. The role involves operating and maintaining pilot plating line equipment, performing analytical measurements, and collaborating with Application Development Engineers and other teams.

Senior Backend Developer will design, develop, and unit test robust APIs and backend services using Java EE. Experience with MySQL, Docker, and RESTful principles is required.

As a Junior Lead Management Manager, you will drive premium leads, customer acquisition, and revenue. You will collaborate with cross-functional teams to expand lead acquisition channels, qualify leads, and implement a customized lead routing mechanism. You will also contribute to data enrichment, lead routine development, and lead scoring model iteration.

Product Manager (B2B) will own the lifecycle of a core smart metering product, translating requirements into a roadmap and collaborating with Engineering, Growth, and partners.