freelance English-speaking jobs in Lübeck

The DLR Institute of Technical Thermodynamics seeks a Master's student to analyze the techno-economic potential of Sustainable Aviation Fuels (SAF) production within Power-to-X (PtX) concepts. The student will simulate and optimize SAF synthesis, extend an existing techno-economic methodology, and conduct sensitivity analyses to identify factors influencing process profitability and sustainability.

Senior Cloud Software Engineer with 7+ years experience in .NET or Golang development. Designs, implements, and supports cloud-based software solutions. Expertise in distributed systems, cloud platforms (Azure, AWS), containerization (Kubernetes), and DevOps practices. Strong communication and collaboration skills.

Fitness Coach needed to deliver and implement workplace health and fitness programs, provide exercise guidance, and lead fitness classes. Must have a Trainer B license, relevant educational background, and excellent German and English communication skills.

Full-Stack Web Developer will maintain and improve the citizenscience.eu platform using Python and Django. Responsibilities include developing features, managing infrastructure, ensuring secure deployment, and collaborating with the team.

Senior Site Manager to lead execution of large-scale energy construction projects. Oversee site activities, manage teams, and ensure project delivery within budget, schedule, and quality standards.

The HR Administrator will prepare and execute monthly payroll, manage employment contracts, and coordinate with external agencies. They will also prepare reports, act as a contact for stakeholders, and support the recording and correction of attendance times.

Drive business analysis activities across the product lifecycle for Buy Now Pay Later and Consumer Finance products. Collaborate with product managers, subject matter experts, and engineering teams to analyze, evaluate, and translate business needs into technical requirements.

Logistics Coordinator for 3PL management and customer service, focusing on Switzerland. Coordinates logistics operations, manages 3PL partners, and supports customer service activities. Requires experience in logistics, supply chain management, and customer service. Fluent German and English required.

Senior Azure Backup & Storage Engineer designs, implements, and operates secure, scalable backup and storage solutions for hybrid environments. Responsibilities include designing backup strategies, configuring Azure Backup vaults, managing Azure Storage solutions, and implementing security controls. Requires strong hands-on experience with Azure Backup, Azure Storage, hybrid environments, and virtualization technologies.

Technical Project Manager supports projects from planning to execution, collaborating with cross-functional teams. Responsibilities include creating technical drawings, planning power and data systems, and coordinating rigging concepts. Requires 3+ years of experience in event production, technical planning, and project management, along with proficiency in Vectorworks/CAD, rigging systems, and lighting control.

Connect clients with experts as a Client Services Associate. Responsibilities include understanding client needs, sourcing and onboarding experts, and ensuring exceptional client experiences. Fluency in English and at least one of the following languages is required: German, French, or Italian.

This part-time position involves loading, unloading, shipping, receiving, scanning, sorting, and stocking packages. May utilize heavy machinery. Requires ability to lift up to 70 lbs., read and memorize postal codes, and work flexible hours. Warehouse experience is preferred.

JetBrains seeks a Product Marketing Manager to drive adoption of Air, a new AI-native platform for software development. The role involves defining product positioning, messaging, and go-to-market strategies, as well as improving the developer onboarding experience. Experience in product marketing for technical products and a strong understanding of modern developer workflows are required.

Full/part-time Fitness Instructor position at TUI BLUE Sylt, Germany. Must be a German resident or have the right to work in Germany (DACH), speak German, and hold certifications in Yoga, Functional Training, and Personal Training.

Develop and run system simulations for data center cooling solutions. Translate simulation insights into design improvements and drive model-based development. Collaborate across teams to connect simulation specialists with data center experts.

This 12-24 month trainee program focuses on intelligent IT solutions. You will rotate through various stations domestically and internationally, driving the development of digital business models within the Bosch IoT ecosystem. The program includes workshops, training, and a personal mentor from top management.

As a Senior Account Executive, you will drive revenue growth in the DACH region by advocating Freshworks product lines to mid-market clients. You will manage your sales pipeline, collaborate with marketing and business development, and exceed sales goals.

Logistics ERP Solutions Architect (SAP S/4HANA) needed to support transition to SAP S/4HANA. Requires several years of experience in IT roles, including business analyst or functional consultant, with a focus on solution architecture. Solid technical background in SAP ERP WM, MM, and SD, experience with S/4HANA and Fiori migrations, and knowledge of solution delivery frameworks are essential. Fluency in English is required, German language skills are a plus.

Test game features across multiple platforms, identify and log bugs, and verify bug fixes. Collaborate with developers to improve game design. Experience in game development and strong communication skills are required.

Designs and develops sophisticated C++ components for medical software solutions, focusing on performance, stability, and scalability. Architects and implements complex multithreading and parallelization concepts. Collaborates with Architecture, QA, and Product Management to deliver robust solutions. Analyzes and optimizes codebases, identifies performance bottlenecks, and elevates system performance.