student English-speaking jobs in Castelló de la Plana

Leads the global go-to-market launch of Unit4’s AI-native architecture, a company-wide 18-month initiative. Responsible for translating complex technical innovation into clear, credible economic value stories for CFOs, COOs, and CHROs. Builds and leads a product marketing function that endures beyond individual launches. Shapes market perception by leading analyst relations to position Unit4’s AI capabilities as differentiated and material. Treats product marketing as a revenue driver, not a content factory.

This Short Term Trader role within ENGIE Global Energy Management & Sales focuses on optimizing energy assets in Spain and Portugal. Responsibilities include managing physical markets, defining bidding strategies, and coordinating production planning. The position requires a strong understanding of energy markets, financial principles, and data analysis.

Full-stack engineer (3+ years) to build end-to-end features for AI recruitment automation SaaS. Strong React/TypeScript and Node.js skills required. Own key integrations and design reliable workflows.

Application Security Analyst will evaluate business requirements, review software architecture, and conduct security testing. Requires a bachelor's degree, application security experience, and knowledge of Java, C++, and C#.

The Knowledge Base Operations Engineer prepares, tests, deploys, and maintains software composition analysis (SCA) Knowledge Base updates. Responsibilities include running Ansible playbooks, writing Python scripts, operating a Go-based mining tool, managing data transfers, and delivering updates to customers.

Boundless Life seeks a decisive General Counsel to lead legal strategy and compliance globally. The role involves contract management, fundraising support, entity setup, international employment guidance, risk management, and outside counsel oversight.

Ensures compliance with Service Level Agreements (SLAs) across airport lounge operations. Monitors service quality, operational checklists, and performance standards. Identifies service gaps and implements corrective actions. Collaborates with operational leaders, support functions, and airport stakeholders to maintain service excellence.

Technical Sales Engineer will lead packaging activity in Spain and Portugal, identifying new accounts, engaging with stakeholders, and closing deals. Requires 7+ years experience in industrial machinery or packaging, strong technical background, and fluency in Spanish and English or French.

Project & Structured Finance Manager will build financial models, conduct risk analysis, and manage due diligence for renewable energy projects. Requires 5+ years of experience in a similar role, expert financial modeling skills, and fluency in English.

AI Engineer will design, build, and deploy intelligent systems. Responsibilities include taking ownership of AI-driven products, translating business opportunities into AI solutions, and collaborating with stakeholders. Requires strong understanding of machine learning theory, hands-on experience building ML systems, and proficiency in Python.

The B2B Marketing Specialist will build and scale marketing partnerships with ecommerce merchants in Spain and Portugal. This role designs and executes co-marketing campaigns, measures performance, and ensures consistent brand messaging.

The Sales Operations & Administrative Assistant provides operational and administrative support to management, managing customer communications, overseeing the order-to-delivery cycle, and maintaining customer data.

Certified Accountants needed for freelance, on-call advisory roles. Provide expert analysis for B2B and AI research projects requiring knowledge of fiscal regulations, reporting standards, and financial logic.

Junior Cybersecurity Engineer to participate in security evaluations, ad-hoc assessments, and R&D projects. Requires technical background, coding experience (Python/C/C++), Git, and strong analytical and communication skills.

Social Media Content Creator to produce engaging photo and video content for clinics in Spain and Italy. Collaborate with clinic teams and the regional marketing team to deliver high-quality content aligned with brand guidelines and patient confidentiality standards.

Analyze and interpret critical data for the advancement of projects. Draft statistical reports, including the Statistical Analysis Plan (SAP). Program data according to Adam (CDISC) and FDA standards.

Industrial Safety & Environmental Engineer to ensure regulatory compliance and safety culture within a growing energy company.

Strategy & Market Analyst (temporary) to support business growth through market intelligence and strategic analysis. Responsibilities include monitoring global energy markets, delivering strategic briefs, and contributing to strategic projects. Requires a degree in a relevant field, fluency in English, and 2+ years of experience in strategy, business analysis, or market intelligence. Strong analytical and communication skills are essential.

Remote Dutch-Speaking Customer Experience Specialist for a premium automotive brand. Call customers, address questions, and highlight brand value. Fluent Dutch and English required, high school diploma, and some customer service or sales experience preferred.

Electrical Engineer needed for steel making project. Oversee LV/MV power distribution, substations, and automation interfaces. Ensure compliance with international standards and project specifications. Coordinate with EPC/EPCM partners, OEMs, and internal stakeholders.