react English-speaking jobs in Valladolid

Renewals Sales Specialist will proactively contact vendors to retain accounts and handle account queries. Responsibilities include meeting productivity targets, securing renewals, and building strong vendor relationships. Successful candidates have strong phone presence, excellent communication skills, and experience in retention sales.

The Technical Leader LV Expert will design and develop low voltage systems for PreFab Modular Data Centers. Responsibilities include participating in project programming, understanding customer requirements, developing design proposals, and managing technical aspects throughout the project lifecycle. The role requires a Bachelor's Degree in Engineering, 5+ years of experience in infrastructure projects, and expertise in data center solutions, including power systems, cooling systems, and electrical/mechanical installations. Fluency in English is required.

Senior Customer Success Manager will manage relationships with key customers, ensuring their success with the platform. Responsibilities include onboarding, training, issue resolution, and gathering feedback for product development. Must have 3+ years of experience as a Customer Success Manager, strong SaaS background, and fluency in English. Relocation to the Canary Islands is required.

Senior AI Creative produces high-quality, brand-consistent fashion e-commerce visuals from briefs. Combines visual taste with deep expertise in generative AI workflows to deliver realistic, stylish assets in consistent sets. Builds and optimizes custom workflows in Weavy and ComfyUI, leveraging AI models like Nanobanana, Seedream, and Kling. Refines outputs using AI and traditional tools to meet professional fashion standards. Portfolio demonstrating commercial fashion aesthetics and AI-generated e-commerce fashion content required. Experience with ComfyUI, Weavy, and leading AI models is essential.

Operations Director needed for a major Italian pharmaceutical company. Responsible for all site operations, including HSE, API production, maintenance, and budget management. Requires a degree in Chemistry, Industrial Chemistry, or Chemical Engineering with 10+ years of pharmaceutical manufacturing experience. Must have strong leadership, communication, and problem-solving skills.

Technology Expert (Batteries & PV) will define and standardize battery and photovoltaic (PV) systems, lead testing and homologation processes, and manage vendor relationships. The role also involves developing innovative energy solutions, designing control algorithms, and overseeing a Network Operations Center (NOC) for battery asset monitoring.

Power Validation & Certification Engineer will define and execute validation strategies, test plans, and procedures for power conversion systems. Analyze performance data, manage test traceability, and lead certification activities. Requires a Bachelor's degree in Electrical Engineering and experience in electronic product validation. Strong knowledge of power electronics, control strategies, and laboratory instrumentation is essential. Experience with UL, IEC, and grid codes is highly valued.

Cybersecurity PMO Support professional needed for a global consulting firm. 3-5 years of experience in PMO, Project Coordination, or Analyst roles required. Strong organizational and analytical skills needed to manage project delivery, track budgets, and identify potential risks. Fluent English required.

Graphic Design Intern to support marketing team in developing visual content for digital, social, and print platforms. Will create assets, marketing collateral, and edit images. Must have proficiency in Adobe Creative Suite and a strong portfolio.

Interior Designers (Senior and Junior) needed to develop standardized hospital room models. Responsibilities include defining design guidelines, creating visual materials, and ensuring compliance with healthcare standards. Degree in Interior Design or Architecture, strong portfolio, and English C1 required.

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.

Storage Engineer will design, implement, and optimize energy storage systems, focusing on lithium-ion batteries, hydrogen, and other emerging technologies.

Junior Project Manager to manage multi-laboratory projects, ensuring on-time delivery, high quality standards, and excellent customer satisfaction.

Program Manager – M&A Integration will plan, drive, and execute post-merger integration of acquired companies, ensuring alignment with business objectives and synergy targets.

Oversees and manages a portfolio of hundreds of millions of euros in renewable energy projects. Provides strategic negotiation support and risk mitigation expertise. Conducts performance analysis and knowledge transfer to project teams.

Senior Product Designer to own end-to-end design for quizzes, lessons, pronunciation practice, and the learning map. Design reusable components, contribute to the Companion design system, and create detailed designs in Figma. Support experiments, work with product managers, engineers, and data analysts, and use research and data to inform design decisions. Requires 5+ years of experience designing digital products with a strong portfolio, expert-level Figma skills, and experience building and managing design systems. Mobile design experience (iOS and Android) is also required.

Provides operational support for the Cybersecurity Portfolio, standardizing processes, tracking resource allocation, and generating reports for executive oversight.

Senior Program Manager to oversee diverse business programs and strategic initiatives within Iron Mountain Data Centers. Experience in data center facilities operations, critical infrastructure, and colocation services is required.

Junior Assistant Designer to contribute to global collections. Assist with trend research, fabric sourcing, sample development, and technical documentation. Recent graduate in Fashion Design or related field required.

Design & Content Intern will create visual and written content for a European fintech. Responsibilities include designing graphics, writing copy, and experimenting with AI tools. Must have a design portfolio and proficiency in design software.