freelance English-speaking jobs in Mannheim

Lead and develop a cross-functional team owning the end-to-end architecture of complex optical and optomechanical systems. Drive design quality and shape the technology roadmap in optic and mechanical design.

This remote project involves recording and annotating Turkish audio interactions to support voice-controlled AI technologies. Candidates must be native in the language and use an Apple Silicon Mac running macOS Sequoia or later.

The role involves maintaining and developing the SAP S/4HANA system landscape. Core duties include ensuring stable SAP operations, managing installations, upgrades, and supporting integrations. Requires relevant SAP Basis experience.

Chief Product & Marketing Officer to define product vision and accelerate commercial growth for a leading IoT connectivity provider. Shape strategy, lead Product, Marketing, and Design teams, and drive innovation.

Principal Business Development Manager to win high-value strategic opportunities in CMTS Cell Line Development. This field-based role requires extensive technical sales experience, workflow design, and driving portfolio growth.

Fulfillment Associate needed for a team focused on delivering customer orders. Tasks include unloading, sorting, and transporting packages. Must be able to lift up to 15kg, stand for extended periods, and follow safety guidelines. Basic German or English language skills required.

Own the technical architecture of the data platform, including warehouse, ingestion, and unified data model. Define technical relationships with the consumer app, build the engineering team, and establish high standards for development and compliance.

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.

Lead global strategy, innovation, and portfolio management for dialysis systems. Oversee Engineering, R&D, Quality, and Regulatory functions to drive next-generation kidney care technologies. Own business outcomes across the portfolio.

Deliver groceries to customers efficiently by e-bike or e-scooter. Maintain a high level of customer service and consistently meet or exceed delivery targets. Earn at least €13.90 per hour plus tips.

IT Service Technician needed for the German Red Cross. Responsibilities include 1st/2nd level support, hardware/software maintenance, and IT resource management. Requires IT training, German C1, and service orientation.

Master's thesis focusing on modeling and intelligent control of a dual-input RF Power Amplifier System. Tasks involve behavioral modeling, ML for parameter dependence, and developing ML control for temperature variations. Requires background in CS, EE, or Physics with applied math.

Software Developer (m/f/d) ERP & .NET role involving programming in Visual Basic, proALPHA, and ABL. Responsibilities include data security, process automation, and ERP system support. Requires strong knowledge of C#, VB, .NET, and proALPHA.

Lead Earth System Science and 1.5°C Overshoot Team to provide scientific leadership on physical climate science, emissions pathways, and risk assessment. Drive science agenda, build a visible team, and support policy-relevant analysis for vulnerable countries.

Lead and develop high-performing Brand Ambassador teams in Germany. This hands-on role involves field coaching, training, performance analysis, and driving sales KPIs for a fast-growing DTC pet nutrition brand. Fluent German and English required.

DevOps Engineer responsible for infrastructure operation, development, and optimization using automation and Infrastructure-as-Code. Duties include managing CI/CD pipelines and supporting developers. Requires experience with DevOps concepts and Linux.

Electronics Engineer/Technician to integrate components into vacuum control systems. Requires a degree in Electronics/Mechatronics or relevant experience, proficiency in schematics, and strong problem-solving skills.

Lead and develop the R&D organization for the Agriculture Business Line, driving innovation and product development excellence across global sites. This role requires a strategic leader with engineering background to align technical capabilities with business objectives.

Senior Amazon Brand Manager needed to strategize and advise FBA sellers on brand growth. Requires 3+ years of experience managing brands over $10M revenue and PPC budgets of $50K+/mo.

Senior Director of Product, Consumer, owns the product vision and roadmap for self-filing in Germany. This role shapes the two-brand strategy, builds AI-native products, and drives growth beyond filing into wealth creation.