freelance English-speaking jobs in Mannheim

Interim Chief Financial Officer to lead finance organization through transformation and integration. Oversee financial planning, reporting, treasury, and tax activities. Drive finance transformation initiatives and ensure compliance.

Senior Institutional Sales professional will acquire and cultivate institutional clients, manage mandate onboarding, and represent the company at industry events.

Scientific staff/PhD-student will develop bipolar membranes for CO2-electrolysis. Tasks include polymer characterization, membrane fabrication, electrochemical testing, and publication of results.

Student Assistant to support photo and video management, research, editing, and communication. Requires university enrollment, ideally in a related field, and experience with photo databases and Adobe Creative Cloud. Fluency in English and German is essential.

Lead the legal function of a growing international technology company. Provide legal, commercial, and strategic advice to the executive team and Board. Manage complex transactions, agreements, and risk. Develop legal processes and lead a mid-sized legal team. German-qualified lawyer with significant in-house or private practice experience required.

Experienced Graphic Designer sought for international opportunities. Create visually appealing designs for marketing materials, websites, and social media. Collaborate with marketing teams and stay updated on design trends.

Mitsui & Co. Deutschland GmbH seeks a Tax & Accounting Specialist to prepare tax declarations, maintain tax records, and assist with audits. Requires a Certified Accountant, Tax Specialist, or comparable certification, experience in tax, and proficiency in German and English.

Legal Counsel needed for DACH region to advise business teams on legal and regulatory matters. Manage contracts, provide guidance on product launches, and contribute to compliance frameworks. Must be a qualified German lawyer with 8+ years of experience.

Drive the technological evolution of sensor systems, focusing on robust, precise, and innovative solutions for demanding industrial inspection applications. Translate customer and application requirements into viable system architectures, with a focus on ultrasonic technologies and state-of-the-art signal processing. Define, plan, and manage verification and validation tests at system level based on technical specifications. Advise management on technological topics, particularly sensor technologies, system platforms, and inspection applications. Work closely with an interdisciplinary and international team across mechanics, electronics, and software.

The Chief Information Security Officer will establish and implement the security strategy for BitGo EU. This role will lead the identification, assessment, and treatment of information security risks, ensuring compliance with BaFin, DORA, and MiCA regulations. The CISO will also own incident response and reporting processes, define security policies, and collaborate with global security teams.

Supports the day-to-day management of the Converse business, driving operational excellence and contributing to the strategic direction. Manages account relationships, executes sales and go-to-market plans, and collaborates with cross-functional teams. Requires strong account management, sales, and communication skills.

Associate Legal Counsel will draft, negotiate, and advise on technology service agreements for AWS commercial customers in Germany and EMEA. The role provides legal counsel on product development, operational, security, compliance, and data protection matters.

Drive model post-training for Large Language Models powering Alexa+. Own the full model development lifecycle, from data curation through deployment. Design and execute training recipes, including supervised fine-tuning, reinforcement learning from human feedback, and preference optimization. Collaborate with scientists and engineers to bring models to scale. Publish findings at top-tier NLP/ML conferences.

Leads strategy and roadmap for enterprise eHealth portfolio, including cloud and platform solutions. Manages full product lifecycle from concept to end of life. Builds and scales B2B software products, preferably in eHealth or healthcare IT.

As a working student, you will support the management of a global strategic customer within the Global Account Team. You will contribute to sales activities, planning customer events, and assisting with account planning and engagement.

The Collaborating Centre on Sustainable Consumption and Production seeks an External Funding Manager to provide financial and administrative support for externally funded projects. The role involves costing, project set-up, controlling, communication with project teams and funders, accounting, and audit support.

Define and own end-to-end solution architecture, turning business needs into technical blueprints. Ensure consistency, scalability, and sustainability of solutions across business lines. Lead the design of cloud-native, API-driven, microservices-based solutions.

Experienced SAP HCM consultant needed for on-premise systems, SuccessFactors, and H4S4 environment. Focus on payroll and time management processes. Support, optimize, and improve existing solutions.

As a Mission Control Engineer, you will build and operate mission planning systems for a growing satellite constellation. You will monitor, control, and optimize spacecraft performance, collaborating with various teams to ensure reliable data delivery. Responsibilities include developing mission planning services, defining engineering standards, and translating mission requests into executable commands.

Electrical Engineer needed for test lab. Responsibilities include creating test specifications, operating equipment, evaluating results, and analyzing deviations. Requires a degree in electrical engineering or equivalent, experience in the transformer sector, and proficiency in Visual Basic and MS Office. Must be physically fit for high-voltage work and fluent in German and English.