English-speaking jobs in Castelló de la Plana

Senior Software Engineer to shape mobile architecture, serverless backend, and engineering standards at a rapidly growing company. Experience with React Native, TypeScript, Node.js, AWS Lambda, and AI product features is required.

Senior LLM Engineer to design, train, and optimize large-scale transformer models. Responsibilities include pretraining, post-training alignment, evaluation, and inference optimization. Requires 2+ years of experience training transformer or LLM models from scratch and expertise in Python, PyTorch, and distributed training frameworks.

Supports Investment Analysis and M&A team with financial modeling and analysis for greenfield investment and M&A opportunities. Builds financial models, performs due diligence, and supports negotiation processes.

TUI seeks a friendly and helpful Airport Rep to welcome guests, build connections, and ensure smooth airport operations. The role requires excellent communication skills, adaptability, and the ability to handle a fast-paced environment. Fluency in English is essential, with Dutch or German being a plus.

Manages IT service delivery, including helpdesk, audio-visual support, and asset management for the AIDC office. Improves IT service management processes, analyzes service operations, and leads IT projects. Requires 5+ years of IT experience, project management skills, and proficiency in Spanish and English.

Lex Dinamica is seeking a GRC SaaS Consultant to advise clients on governance, risk, and compliance frameworks, including controls, assurance, and technology implementation. The role requires fluency in German and English, experience designing or operating GRC frameworks, and a strong understanding of privacy, AI governance, and compliance technology.

Marine Technician & Fleet Coordinator needed for 16-boat fleet in Ibiza. Must have solid mechanical background, be comfortable with hands-on work, and able to manage a schedule of captains, cleaners, and mechanics.

Senior Frontend Developer will design and develop modern web applications using React and React Native. Responsibilities include building scalable user interfaces, translating business requirements into user experiences, and integrating REST APIs. The ideal candidate will have strong experience with React, React Native, and the modern frontend ecosystem.

Strategy Associate Director will guide multidisciplinary teams, shaping project direction and ensuring successful delivery. Leads business development efforts with a focus on the Middle East, crafting proposals and participating in client conversations. Requires 6+ years of experience in business strategy, innovation management, or related fields. Strong analytical, communication, and business development skills are essential. Fluency in English and Spanish is required.

Full stack engineer to design, develop, and deploy AI-driven applications. Responsibilities include building React frontends, Python backend services, and REST APIs. Experience with CI/CD, Git, and software engineering best practices required.

Experienced GNSS System Engineer needed for conception, specification, and design phases of GNSS-related systems. Manage requirements, analyze GNSS system concepts, signals, and performance, and produce technical documentation. Requires experience with DOORS, JIRA, MBSE tools, and GNSS technologies.

Junior Account Executive needed to manage client relationships and campaign execution for a leading European retailer. Fluent English and Spanish required, with 1+ year of experience in account management or marketing.

QA/QC Mechanical & Piping Engineer will develop, implement, and monitor QA/QC plans for mechanical and piping systems. Responsibilities include reviewing documentation, performing inspections, collaborating with contractors, and ensuring compliance with project specifications and codes. Requires proven experience in QA/QC for industrial projects and strong knowledge of piping codes, mechanical systems, and welding standards.

Business Development Representative needed for a Barcelona-based startup transforming energy storage management. You will generate leads, qualify opportunities, and collaborate with sales to drive new business. Requires 1-2 years of B2B SaaS experience, strong English (C1-C2), and a passion for renewable energy.

Lead and develop the Spanish affiliate for a globally recognized Life Sciences company. Oversee and optimize the P&L, managing Sales, Marketing, Finance, I+D, and Logistics teams. Drive expansion focused on OTC channels and implement best practices in business development.

Launch Manager (Strategy & Funnels) will oversee product launches, developing go-to-market strategies, managing sales and marketing funnels, and collaborating with cross-functional teams.

Technical Illustrator needed for aerospace and defense projects. Create and update 2D and 3D technical illustrations for aircraft and defense systems documentation. Must have experience with ASD S1000D and structured documentation processes. Strong understanding of engineering drawings and CAD data required.

Senior Android Engineer sought to build and maintain high-performance, scalable Android applications. Requires 7+ years of experience, deep Kotlin expertise, and knowledge of Jetpack libraries and testing frameworks.

Brand & Digital Strategy Designer to develop and implement brand and digital strategies for EU markets. Translate business goals into visual and content-driven brand solutions. Create digital assets and ensure brand consistency across platforms. Collaborate with cross-functional teams to align messaging and execution.

Cybersecurity consultant with 5+ years experience in incident response, digital investigations, and forensics. Project management and presentation skills required. Experience with malware analysis, network traffic analysis, and mobile device forensics is a plus. Fluency in English and Spanish.