student English-speaking jobs in Castelló de la Plana

Senior Producer to oversee and lead the production of immersive experiences from concept to delivery. Manages project timelines, coordinates cross-functional teams, and ensures quality standards. Requires proven experience leading large, multidisciplinary projects, audiovisual production knowledge, and strong communication and leadership skills.

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.

The Project Manager leads the execution of construction works and installations, managing client, contractor, and subcontractor teams. Responsibilities include on-site coordination, technical support, training, and project documentation. Requires a Mechanical Engineering degree, construction knowledge, and fluency in English and Spanish.

Provide technical assistance for clean energy and climate-related infrastructure projects in developing countries. Services include sector assessments, project preparation, environmental and social advisory, climate risk assessments, and capacity building. Requires a university degree in a relevant field and 10+ years of experience in energy economics and financial viability. Fluency in English is required.

Leads and manages EU regulatory activities for Active Substances, substance defense, and related dossiers. Ensures compliance with EU regulatory systems and frameworks. Prepares, reviews, and manages regulatory dossiers and technical documents. Collaborates with cross-functional teams on regulatory initiatives.

Lead Product Designer to guide complex client projects from ideation to launch. Strong visual design skills and experience leading multidisciplinary teams are essential.

Global Governance & Engagement Officer will shape and drive the future of corporate compliance and ethics. This senior role reports to the Chief Compliance Officer and partners with senior leadership to strengthen governance, embed ethics, and ensure alignment between culture, accountability, and performance.

Senior Hardware Engineer with 5+ years of experience designing electronic circuits for industrial and consumer products. Leads junior engineers and participates in product industrialization, validation, and certification.

Energy Solutions Engineer will design and deliver energy efficiency solutions for industrial clients across Europe. Responsibilities include conducting energy audits, developing savings models, and collaborating with sales, projects, and engineering teams. Requires 3+ years of engineering experience, technical sales experience, and fluency in English and Spanish.

Senior UI/UX Designer will own UI/UX design for hybrid-casual mobile games from concept to production. Responsibilities include researching market trends, creating UI/UX flows, wireframes, and visuals, and mentoring artists. Requires excellent UI/UX sensibility, 2D art skills, and strong communication. Portfolio showcasing UI/UX work for hybrid mobile games, 2D game art, and paint-overs is mandatory.

As a Sales Representative - Payments, you will generate new business and support existing clients by promoting Global Blue by Shift4's merchant servicing products, hardware, software, and professional services. Responsibilities include prospecting, setting appointments, closing deals, and building strong client relationships.

Power Electronics Design Engineer to design, develop, and qualify advanced power subsystems for spacecraft platforms. Responsibilities include schematic design, component selection, circuit simulation, and thermal/radiation analysis. Requires a Bachelor's or Master's degree in Electrical Engineering, Electronics, or related field and 3+ years of experience in power electronics design.

The Business Unit Manager will lead the strategic and operational success of the CDMO business unit, overseeing sales, commercial operations, and product development. This role requires strong commercial thinking, a results-driven approach, and product technical skills.

Designs customer-facing mobile and digital experiences across iOS, Android, and Web platforms. Leads user journeys from concept to implementation, conducting research and creating wireframes, mockups, prototypes, and UI specifications. Collaborates with teams to iterate and improve solutions.

Manages production of pharmaceutical products at external vendors (CMOs). Plans, manages, and drives Fill & Finish activities ensuring quality, scope, budget, and time adherence. Collaborates with cross-functional departments and builds relationships with internal and external stakeholders.

Shape the future of sustainable mobility as a Zero Emissions (ZE) Business Partner. Define and lead the business unit's ZE strategic roadmap, drive innovation, and ensure alignment with corporate objectives.

Experienced Project Manager needed for a leading automotive project. Lead and coordinate complex projects, ensuring alignment with timelines and deliverables. Collaborate with specialist groups and drive change management. 5+ years of project management experience, knowledge of change and lifecycle management, and ramp-up in production environments required. Degree in Engineering, Project Management, or similar. Fluent in German and English.

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.

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.

Innovation Manager will partner with the Innovation Director to execute and scale innovation initiatives in Spain and internationally. The role involves translating strategy into roadmaps, designing and testing products and services, and supporting the adoption of AI in business processes.