intern internship English-speaking jobs in Cartagena

Process Engineer will design H2SITE's product portfolio, maximizing system efficiencies and ensuring contract KPIs are met. Responsibilities include basic engineering, safety studies, supervising detailed engineering, and coordinating client interactions. Requires +5 years' experience as a Process Engineer and a MSc in a relevant field.

Clinical R&D Quality Assurance Technician ensures clinical trial processes comply with GCP and quality standards. Provides QA support, evaluates quality issues, and maintains awareness of applicable regulations.

Regional Growth Manager Europe will lead acquisition strategy in Germany, Austria, and surrounding markets. The role focuses on identifying and converting new travel agencies, activating underperforming branches, and supporting regional acquisition targets. This individual contributor role manages the full acquisition lifecycle and coordinates activities across digital channels, marketing, and retail stakeholders.

Leads and coordinates complex, multi-disciplinary research initiatives in structural biology and AI-powered drug discovery. Manages the end-to-end project lifecycle, defines milestones, and mitigates risks. Serves as a power user of Insilicode, configuring and managing virtual screening campaigns and other in silico workflows. Coordinates with structural biology teams, data engineers, and executive leadership.

System Engineer to contribute to the development of the world's first hydrogen-powered commercial aircraft. Responsibilities include performing analysis, validation, and verification of system requirements, developing and verifying System Interface Documents, defining and executing V&V activities, and assessing technology maturity. Requires a University degree in Engineering with at least 5 years of experience as a system engineer, significant experience in Validation and Verification activities, and experience in DOORS.

Project Manager Intern will oversee multiple projects, managing scope, budget, and timeline. Responsibilities include collaborating with teams, clients, and suppliers, preparing documentation, and providing administrative support. Must be pursuing a Master's degree in Business Administration or Project Management with basic project management tool knowledge.

Provide administrative and personal support to management. Manage calendars, meetings, and appointments. Handle emails, calls, and correspondence in perfect English.

Develop, manage, and implement comprehensive brand growth plans, analyze market data and consumer feedback, and coordinate brand communication plans.

The Partner Account Manager will develop and manage a network of sales partners and distributors in Southern Spain. This role will oversee onboarding, training, and business plan development for partners. The ideal candidate has 5+ years of IT experience, strong sales skills, and experience with partner development in Spain.

Provides technical and administrative support to engineering and operations teams. Assists with planning, documentation, data analysis, design support, and coordination of engineering activities.

Develop physics-grounded EM/RF models for space data transport, including link budgets, signal analysis, and interference considerations. Couple these models with machine learning approaches to improve reliability and efficiency. Collaborate with the CTO and engineering team to integrate models into production workflows.

Provides legal and administrative support across multiple legal areas, including data protection, compliance, commercial, and environmental law. Assists with legal research, contract administration, document preparation, risk analysis, and trial preparation. Supports legal counsel in advising on contractual rights, risks, and obligations. Maintains document management systems and assists with the preparation of meeting minutes.

Sales Manager to spearhead business development in Spain for a prestigious international group specializing in fragrances and flavors. Responsibilities include market analysis, client acquisition, relationship management, and reporting. Requires experience in technical-commercial roles within the food flavors sector, a Master's degree, and proficiency in English.

Junior Deep Learning Engineer will work across the full model development lifecycle, from generating datasets and training models to deploying them in production.

Part-time Maintenance Assistant needed for holiday rental properties in the Greater Marbella Metropolitan Area. Responsibilities include routine maintenance, repair requests, and property upkeep.

Business Development Manager to drive growth in the CCTV and integrated security market. Minimum 2 years of experience in CCTV or electronic security sales required. Full professional proficiency in English is mandatory.

Winfor seeks a full-time hybrid Account Manager to acquire new accounts and manage existing client relationships. Responsibilities include managing projects, identifying opportunities, understanding client needs, and ensuring customer satisfaction.

Operations Analyst to join Customer Support function. Analyze customer data, identify pain points, and improve customer experience. Design and optimize support workflows, track metrics, and identify automation opportunities.

Experienced Piping Supervisor needed for large-scale industrial construction project in Huelva, Spain. Supervise piping installation, coordinate contractors, and ensure adherence to specifications and safety standards.

Florazu seeks B2B Account Managers to expand European market presence. Develop and manage client portfolios, source flower offers, and negotiate with growers. Fluency in English and a relevant European market language required. 3+ years of B2B sales experience preferred.