freelance English-speaking jobs in Mannheim

Scientific Programmer to develop and integrate biogeochemical models for Earth System Models. Responsibilities include maintaining and advancing the HAMOCC model, implementing new components, and ensuring software quality.

The BESS Manager builds and commercializes the battery storage pipeline across Europe. This role focuses on structuring projects from development through early operations, requiring strong financial modeling and market strategy for BESS assets.

Experienced Human Resources Manager needed to drive global HR functions for a 700 FTE site. Responsibilities include advising management, managing the employee lifecycle, and ensuring compliance with labor law. Requires a relevant bachelor's degree and industrial sector experience.

Design and develop enterprise-scale ontologies and knowledge graphs to integrate diverse data sources. Implement knowledge graph infrastructure using technologies like Neo4j and RDF/OWL. Collaborate with domain experts to formalize knowledge.

Own major product areas for a B2B SaaS company transforming property management using AI. Define roadmaps, prioritize backlogs, and drive measurable outcomes through end-to-end product ownership. Requires commercial SaaS experience and excellent German.

Serve as a trusted advisor to legal executives on contract transformation, risk management, and AI-driven solutions. Drive business growth by influencing product strategy and supporting strategic enterprise opportunities.

Fleet Specialist Team Lead manages in-field and repair tasks (70%) and team management (30%). Requires a valid driving license, English fluency, and proactive leadership skills.

Research Collaboration offers access to LONA, a multimodal observational environment for neuroarts and creative health. Researchers bring protocols and analytical lenses to study expressive behavior using lab-grade signal synchronization.

Senior Manager Global Mobility is accountable for the strategic design and operational excellence of global mobility programs. This role ensures compliance with international tax, immigration, and labor laws while leading the mobility team.

Senior Category Manager to develop and optimize the FMCG assortment for the German market. Responsibilities include product selection, strategy execution, and performance monitoring for a fast-scaling e-commerce business. Requires 4-10 years of FMCG experience.

Organized Office & Operations Associate needed to support daily business activities. Responsibilities include invoice organization, inventory management in ERPNext, and general administrative support. Requires fluent German and English.

Experienced Defect Management Engineer needed for a 12-month freelance industrial project. Responsibilities include managing defect lists, quality inspections, and coordinating technical issue resolution. Requires a Mechanical or Process Engineering degree and 2+ years of relevant experience.

Lead product development from concept to launch for innovative makeup, ensuring full regulatory compliance across EU, UK, and US markets. Requires 5+ years developing color cosmetics.

Postdoc role in Pancreatic Cancer Biology and Immunology at DKFZ. Investigate early pancreatic cancer development and immune evasion using mouse models, spatial transcriptomics, and functional genomics. Requires PhD in related field with strong publication record.

Experienced HRBP needed to own end-to-end people operations for Unilumin Germany. Responsibilities include strategic partnership, localization recruitment, German labor law compliance, and acting as the HQ bridge. Requires 5+ years of HR experience and fluency in English and Chinese.

Senior Director – Construction leads the successful delivery of hyperscale data center campuses and mission-critical infrastructure. This role oversees construction, safety, budget, and stakeholder engagement for complex projects.

Experienced lawyer sought to advise clients on contentious and non-contentious construction and real estate matters, focusing on major development and infrastructure projects.

Construction Manager to supervise EPC execution for a large-scale battery storage project. Responsibilities include team building, managing BoP, civil works, procurement, and HSE. Requires experience in large energy/infrastructure EPC delivery and fluent German.

Experienced Wind Turbine Technicians needed to support installation, servicing, and maintenance of large wind farms. Responsibilities include diagnosing and repairing electrical, mechanical, and hydraulic faults. Requires relevant technical qualification and experience.

Material Clerk role involves receiving, inspecting, issuing, and returning aircraft spare parts and materials. Requires experience as a warehouse logistics specialist or similar, good English, and computer skills.