react English-speaking jobs in Valladolid

The Data Platform Specialist (CDP) ensures effective data utilization for marketing activation. This role collaborates with teams to ingest and transform data, aligning with business needs and supporting power users. The specialist understands data models, architecture, and success metrics, driving data-driven decision-making.

Design and implement Generative AI solutions for a leading pharmaceutical client. Translate business needs into AI use cases and optimize prompts for Large Language Models (LLMs).

GBSB Global Business School seeks a part-time lecturer to teach Tokenomics and Cryptocurrency Markets to undergraduate and graduate students in Barcelona.

Lead IT strategy, infrastructure, and security for a fast-growing international education company. Define and execute IT strategy, manage multi-cloud infrastructure, ensure cybersecurity compliance, and oversee core business systems.

The Key Account Director manages and grows a portfolio of high-value, multi-country enterprise clients. This senior role is responsible for the strategic management, retention, and expansion of the company's most critical customers.

Leads and oversees the implementation of quality programs across all BioNanoPharma operations, ensuring regulatory compliance and continuous improvement. Develops and maintains the Quality Management System (QMS) and manages quality documentation. Plans and executes audits, investigates incidents, and drives continuous improvement.

Buyer/Visual Merchandiser will develop and execute product merchandising strategies across e-commerce, retail, and wholesale channels. Responsibilities include buying, trend forecasting, visual merchandising planning, and collaborating with cross-functional teams to ensure brand consistency and commercial success.

Business Development Manager (Mid) will manage the B2B pipeline from discovery to signature for Take a Chef, a premium private chef experience platform. Responsibilities include pipeline generation, consultative sales, and process improvement. Must have 2-3 years of B2B sales experience, bilingual or near-native English, and the ability to work on-site in Madrid.

Senior Full-Stack .NET/React Developer will develop and maintain cloud-based web applications using .NET (C#) and React JS. Responsibilities include designing and consuming RESTful APIs, working with relational and non-relational databases, and collaborating with product managers, designers, and fellow developers. Must have 4+ years of experience in full stack development, strong knowledge of .NET Core / ASP.NET Core, C#, and React JS, and proficiency in JavaScript/TypeScript, HTML, and CSS.

Lead the brand strategy and execution for Ecostars, the #1 ESG hotel certification in Western Europe. Develop and implement content, social media, events, and paid media strategies to achieve global recognition. Analyze performance and iterate to maximize ROI.

Senior BI Engineer (6-Month Fixed-Term Contract) will design and develop data visualization ecosystems and analytical frameworks. Responsibilities include building data pipelines, developing dashboards, ensuring data quality, and mentoring junior engineers. Requires a Bachelor's or Master's degree in a quantitative field and 5+ years of experience in BI engineering, data engineering, or a related role.

Country/Cluster Merchandiser for the Spain market will develop and own country-level forecasts, product ranging, and replenishment. Responsibilities include optimizing inventory management, overseeing last-mile deliveries, and conducting data analysis to support retail operations.

Research Assistant to support laboratory projects at EvoEnzyme. Responsibilities include conducting experiments, analyzing data, and performing molecular biology, biochemistry, and protein expression techniques.

Experienced Natural Gas Trader sought to establish and develop a new gas trading desk. Responsibilities include trading across European gas hubs, identifying opportunities, and building relationships with market participants. Strong knowledge of European gas markets, particularly the Spanish market, is required.

Design, build, and operate cloud-native NoSQL database services, focusing on MongoDB. Contribute to automation, reliability, and continuous improvement of the platform.

Leads the design and execution of strategic initiatives (Big Bets) across the organization's ecosystem. Collaborates with business unit leaders to co-create strategies, launch growth initiatives, and ensure alignment with HBX's priorities. Develops and presents strategy, performance, and status reports to leadership.

Lead the Engineering team responsible for building products that monitor global content delivery networks. Own the lifecycle of analytics products, ensuring data integrity and compliance with global privacy standards.

MuleSoft Developer needed for a 12-month contract to design, build, and optimize enterprise-grade APIs and integrations across complex platforms.

The Chief Operating Officer will lead global operations and execution across product, AdTech, and mobile gaming business units. The COO will partner with the CEO and Board to scale the organization while maintaining speed, accountability, and a strong product-driven culture.

Expert needed for SAP dCEM (Digital Customer Engagement Manager) role. Requires 5+ years of SAP Basis experience, 2+ years of cloud knowledge, and hands-on experience with S/4 HANA, HANA database, and SAP upgrades/migrations. Experience with SaaS products (Ariba, Salesforce, C4S) integration and hyper scalers (AWS, Azure, GCP) is beneficial.