student English-speaking jobs in Castelló de la Plana

Atelier Madre seeks a detail-oriented artisan to craft leather bags and assist customers in our Barcelona store. Must be trustworthy, efficient, and have a passion for quality craftsmanship.

Design, develop, and optimize machine learning models for object detection, segmentation, and classification. Research, implement, and enhance computer vision and numerical algorithms. Build computer vision software systems and analyze data to monitor and evaluate performance.

Designs and validates thermal architectures for optical payloads and satellites to ensure mission success. Performs thermal calculations, simulations, and test planning. Contributes to satellite design, AIT activities, and operational planning.

Lead engineering activities for signaling projects in Spain, orchestrating multidisciplinary teams and ensuring flawless technical strategy. Manage project tasks, deliverables, and budgets, while communicating effectively with stakeholders and driving continuous improvement.

Operations & Logistics Specialist to oversee the entire supply chain, including warehousing, transportation, and inventory management. Will manage factory coordination, external warehouse partners, shipping logistics, and inventory integrity. Requires 3+ years of experience in operations and supply chain, strong problem-solving skills, and proficiency in Excel.

As a Mechanical Engineer, you will contribute to the design, integration, and qualification of ICEYE's satellite hardware. You will support continuous improvement of existing satellite products and mechanical designs, collaborate with suppliers and teams, and participate in troubleshooting and issue resolution.

Lead the development and execution of an AI-powered content production pipeline, from script to distribution. Produce and iterate on high-quality microdramas, experiment with generative video tools, and analyze performance to optimize output. Define the creative direction and visual style for a proprietary storytelling universe.

The Waiter/Waitress & Host/Hostess delivers outstanding dining experiences at Mandarin Oriental, Barcelona. Responsibilities include welcoming guests, managing reservations, providing attentive service, and coordinating with kitchen and bar teams. Minimum 2 years' experience in a luxury hotel or high-end restaurant is required, along with fluency in English and additional languages.

Estimating Engineer for utility-scale PV and BESS projects. Prepares EPC cost estimates, develops CAPEX breakdowns, and coordinates with engineering, procurement, and construction teams. Requires 3+ years of experience in EPC estimating for utility-scale PV projects (≥50 MW) and experience with BESS projects is highly desirable.

Conduct independent and collaborative research in family business, ownership, governance, and sustainable finance. Develop long-term research projects and contribute to publications in top-tier academic journals.

This role requires a CRM strategist to architect the customer and candidate journey, partnering with the Channel Marketing Director to define and roll out a CRM strategy. Responsibilities include performance analysis, campaign lifecycle management, and collaboration with cross-functional teams.

Develop and manage HoldCo financial models for a diversified renewable energy portfolio. Lead NAV financing, including cash waterfalls, covenants, and stress testing. Build project and portfolio-level models for solar, wind, and BESS assets.

Shape and execute sales strategy to drive business growth within a designated territory. Support and develop relationships with customers and channel partners. Collaborate with internal teams to achieve goals.

Senior Clinical Project Manager oversees the entire life cycle of Life Sciences Clinical projects, ensuring customer satisfaction, budget optimization, and adherence to quality standards.

Develop responsive HTML emails using table-based layouts and inline CSS. Ensure consistent rendering across various email clients and environments. Build and maintain email templates, test thoroughly, and optimize for mobile responsiveness. Implement dynamic content blocks using provided templating syntax.

4sfera Innova seeks two Consultants: an Environmental Assistant Consultant (Junior) in Girona and an Air Quality Consultant (3+ years experience) with potential for remote work. Both roles involve data handling, analysis, report writing, and project support. The Air Quality Consultant will also manage projects, conduct assessments, and interact with clients.

Senior Mobile AI-First Engineer will build next-generation mobile applications for restoration professionals. Responsibilities include Kotlin Multiplatform/Compose Multiplatform development, native iOS/Android development, and cross-functional collaboration. Requires 7+ years of experience shipping Android/KMP applications, expertise in Jetpack Compose/Compose Multiplatform, and experience using AI tools like Cursor, Claude Code, or Copilot.

Hotel Booking Agent needed for Travelodge. Manage inbound calls for reservations, amendments, and cancellations. Convert inquiries into bookings using a sales-driven approach. Fluency in English and Spanish required.

Experienced Well Control Instructor to deliver virtual training on well control and drilling based on IWCF and/or IADC standards. Minimum 1+ year of Oil & Gas drilling industry experience required. Fluent in English and Italian.

Senior SRE/DevOps to ensure high availability, reliability, and scalability of critical systems for a banking client. Responsibilities include improving reliability, monitoring, and observability of AWS-based services, defining and implementing SLIs and SLOs, and participating in system design and reviews. Requires +5 years of experience as a DevOps Engineer or similar role in cloud environments, strong AWS experience, and expertise in Infrastructure as Code, CI/CD pipelines, Docker, Kubernetes, and monitoring tools. High English level required.