student English-speaking jobs in Castelló de la Plana

Genetic Laboratory Technician needed to support daily operations of a reproductive genetics laboratory. Responsibilities include processing blood samples, performing molecular biology and genomics techniques, and maintaining laboratory records. Requires a Laboratory Technician certificate, English language skills, and experience in a genetics laboratory with techniques such as PCR, qPCR, or NGS.

Develop and implement physical layer algorithms for 5G radio systems. Design, model, and verify signal processing algorithms with a focus on high-performance and real-time requirements.

Identify, assess, and remediate vulnerabilities across IT environments using tools like Tenable Nessus, Qualys, or Rapid7. Validate findings, prioritize remediation, and coordinate with IT and DevOps teams.

Manage and support a sales team in Santa Eulalia, acquiring and selling real estate properties. Develop market analyses and property presentations.

Real Estate Sales Consultant to join a leading luxury agency in Barcelona. Responsibilities include property acquisition, client advising, sales negotiation, and CRM management. Requires previous real estate experience, strong sales orientation, and fluency in Spanish and English.

Leads and grows data science capability for a global organization. Owns data science strategy, quality, and impact across the organization. Leads, mentors, and scales a multi-layered data science team. Partners with stakeholders to translate challenges into data-driven solutions. Ensures responsible, transparent, and scalable AI solutions.

Firmware Developer with 3-4 years of experience needed for a fast-growing startup. Design and implement firmware for embedded systems and optical transceivers. Collaborate with hardware and system engineers using Scrum methodology.

Sell Domino printers and complementary items to new customers in Andalucía Occidental (Sevilla, Huelva, Cádiz y Córdoba). Achieve sales targets and manage customer relationships.

The Technical Functional Analyst will translate business requirements into detailed functional specifications, user stories, and acceptance criteria. Responsibilities include drafting technical documentation, creating logic diagrams, and acting as a liaison between business stakeholders and the development team.

Assists the store manager in driving sales, managing a team, and upholding brand image. Responsibilities include implementing sales strategies, analyzing performance, coordinating marketing events, and ensuring excellent customer service. Requires 3-4 years of retail experience, 2 years of team management, and fluency in Spanish and English.

Senior Optimization Scientist to design and develop advanced optimization models and algorithms for complex engineering and operational challenges.

The PR Deputy Director will assist in developing and executing government affairs and public relations strategies. This role requires 10 years of experience in government affairs and public relations, with at least 5 years in a managerial position. Fluency in English, Spanish, and Catalan is required.

Senior Rentals Agents will identify and secure luxury properties for rent in Barcelona. Responsibilities include negotiating agreements with property owners, managing the rental cycle, and collaborating with marketing to promote listings. Candidates should have proven experience in real estate, strong business acumen, and proficiency in English and Spanish.

This Systems Engineer role focuses on owning and optimizing the global cloud infrastructure for N26. Responsibilities include system lifecycle management, automation, AI infrastructure provisioning, monitoring, and troubleshooting. The ideal candidate will have experience with AWS services, IaC (Terraform or AWS CDK), containerization, and DevOps practices.

Isotrol seeks a Project Engineer to serve as the main client contact for integrations of its SCADA Monitoring and Control System. The ideal candidate will have an industrial engineering background with experience in renewable energy or the energy sector, knowledge of control/SCADA systems, and strong analytical and electrical skills.

Leads Serrala's global communications strategy, partnering with Executive Leadership Team to drive a unified narrative. Manages media relations, crafts content, and oversees internal communications programs.

Senior Optimization Scientist to design, develop, and implement optimization algorithms for a cutting-edge aviation and travel technology project. Translate business needs into mathematical models and collaborate with cross-functional teams to solve complex problems.

Honest Greens seeks a Social Media Content Creator to produce engaging video and photo content for various platforms. Responsibilities include planning, shooting, editing, and adapting content while ensuring brand consistency. Proven experience in video production, photography, and editing is required, along with proficiency in post-production software and strong communication skills in English and Spanish.

Demand and S&OP Manager will lead the end-to-end Group demand planning and S&OP cycle, standardize processes, and improve systems. The role requires 5+ years of planning experience, 2+ in demand planning, team management experience, ERP proficiency, and advanced Excel skills. Fluent English is required, with Dutch, French, or Spanish a plus.

Design, develop, and maintain automated tests for web applications. Define and execute test plans and identify, document, and track defects. Ensure software quality throughout the development lifecycle.