react English-speaking jobs in Wuppertal

Provides administrative support for clinical trials, including documentation, coordination, and regulatory submissions. Assists in trial execution, monitoring progress, and collaborating with cross-functional teams.

Refine and validate a measurement method for human hair gloss. Design and improve image acquisition and analysis procedures to quantify gloss characteristics. Analyze correlations between image-based gloss data, consumer perception, and chemical/physical properties.

Senior Accountant supporting the accounting close process for Polish entities. Ensures accounting accuracy, timely reporting, and compliance with US GAAP, Polish GAAP, and regulations. Reconciles accounts, completes accruals, and manages intercompany balances. Trains and guides Polish business transactions to ensure compliance. Manages external audits and collaborates with stakeholders. Requires fluency in Polish and English, experience with Polish GAAP and statutory reporting, and strong communication and analytical skills.

Senior AI Deployment Engineer will design, develop, and deploy AI models (computer vision, augmented/mixed reality, GenAI) into medical device products. Develop and optimize AI software for cloud and edge devices. Build containerized AI services and orchestrate deployments. Collaborate with MLOps and AI security teams for continuous integration, testing, and monitoring. Ensure compliance with regulatory requirements.

Leads the management and implementation of conversion optimization strategies across digital, telesales, and partner channels. Designs, implements, and evaluates A/B and multivariate tests to improve conversion rates. Analyzes key funnel metrics, attribution models, and ROAS. Collaborates with campaign, sales, and product teams to optimize lead-to-customer conversion. Manages an international, data-driven team.

Senior Technical Expert to lead complex battery storage projects from design and engineering to construction and commissioning. Responsibilities include technical leadership, project management, construction oversight, quality assurance, system optimization, and contract negotiations. Requires a degree in a relevant field and 4+ years of experience in battery storage projects.

Strategic Business Developer will partner with enterprise customers to implement Adobe solutions, driving growth and innovation in the IT sector. Responsibilities include defining customer workshop agendas, delivering impactful demos, and expanding Adobe's footprint. Requires proven experience in visual communication projects, driving discovery calls, and expertise in customer success, business development, and product evangelism.

Senior IT Engineer to ensure reliable operation and continuous improvement of data services. Responsibilities include system monitoring, anomaly investigation, software release validation, scripting, documentation updates, and KPI reporting. Requires experience in Unix/Linux environments, scripting (Python, Shell), software development practices (Java, SQL, REST APIs, Git), and operational support tools (Jira, Confluence).

Manages Paid Social and Display campaigns, analyzes performance data, and collaborates with cross-functional teams. Requires 2-3 years of experience, proficiency in reporting and optimization tools, and knowledge of Merchant Centers and campaign automation platforms. Must be able to work independently, manage projects, and vendor relationships. Fluency in English and a passion for luxury fashion are required.

The Inside Sales Account Representative will manage a book of commercial business, owning the full sales cycle from initial outreach to closing deals. Responsibilities include new business acquisition, channel collaboration, retention and expansion, and territory strategy development.

As a Scientist I – Bioassay Sciences and Development, you will design, optimize, and transfer analytical methods, including cell-based and binding assays, onto automated platforms. You will implement and support automated workflows, perform assay validation, and author laboratory reports and SOPs.

Supports day-to-day People Operations, administrative processes, and accounting workflows. Prepares employment contracts, handles employee records, and assists with payroll inputs. Provides accounting support including journal entries, month-end close activities, and invoice tracking. Maintains process documentation and supports workflow improvements.

GeminiSense seeks an Agent Builder to design, build, and deploy AI agent systems for internal operations and external products. Responsibilities include automating workflows, developing AI-powered products, and iterating on solutions based on user feedback. Candidates should have a proven track record of building products and a strong understanding of AI and machine learning tools.

Provides first-level HR support to employees and managers across EMEA entities, with a focus on Slovakia, Netherlands, Switzerland, and Germany. Administers and optimizes HRIS, maintains data accuracy, and generates reports. Supports onboarding, offboarding, payroll processing, and documentation. Collaborates with HR colleagues and cross-functional teams.

Senior Data Engineer with 3+ years experience needed to design and optimize Databricks architecture. Develop scalable data pipelines, automate CI/CD, and collaborate with DevOps and Data Science teams.

Part-time Data Labeling Junior Specialist to support the development of AI-based anonymization software. Label and review image and video datasets to train machine learning models. Identify and tag objects according to guidelines. Strong attention to detail and computer skills required.

Test Engineer (m/f/d) will drive system-level validation of Battery Energy Storage Systems (BESS). Responsibilities include planning, executing, and documenting system and subsystem tests, verifying integration of electrical, software, thermal, and safety systems, and developing scalable test procedures. Additional tasks may include ECAD support, PLC logic implementation, and development of EoL/FAT tooling.

Manager, Transaction Services will lead and oversee buy-side and sell-side financial due diligence engagements. The role requires a minimum of 4 years of relevant experience in Transaction Services and a strong track record of leading complex due diligence engagements.

Senior Manager for Autohero's Financing & Value-Added Services Team. Drive commercial performance of consumer financing and private leasing. Design, optimize, and implement financial products and processes. Collaborate with internal and external teams to launch new customer solutions.

Support the grid engineering team with design tasks, process improvements, and project lifecycle insights. Contribute to engineering solutions for renewable projects.