intern internship English-speaking jobs in Cartagena

Lead the design and execution of portfolio optimization and hedging strategies across European power markets. Manage market positions, structure PPAs, and develop valuation frameworks.

Assistant Facilities Manager supports efficient site operations by managing soft services, including reception, cleaning, and vendor relationships. Manages team providing first-line soft services and ensures cleaning quality standards are maintained. Responds to Trouble Ticket requests and manages daily health and safety issues. Reports to the Facilities Manager and collaborates with the Facilities Team. Requires knowledge of facilities/office services coordination and experience in a high-profile corporate environment.

Enterprise Business Development Manager to build and manage a pipeline of opportunities with large enterprise clients in Spain.

Lead Data Scientist to drive AI-powered innovation, translating business vision into scalable solutions. Own the end-to-end AI lifecycle, from research to production deployment. Collaborate globally and cross-functionally to identify and shape high-value AI opportunities. Champion ethical and reliable AI practices.

Roc360 seeks a Real Estate Closing Specialist in Madrid to oversee and manage US real estate loan closings. The role involves collaborating with legal counsel, title companies, and internal teams to ensure compliance, manage risk, and deliver a positive client experience. Requires fluency in English, a bachelor's degree, 3-5 years of relevant experience, and strong communication and organizational skills.

Accountant needed for Spanish branch of multinational healthcare company in Madrid. Responsibilities include monthly invoice accounting, bank reconciliation, expense reporting, general ledger maintenance, and preparing financial reports. Requires 3-5 years of experience, a degree in economics, and proficiency in SAP and advanced Excel.

Operations Intern will build and optimize scalable processes to support REVEL's rapid growth. Interns will work cross-functionally on strategic projects impacting growth, efficiency, and customer experience.

Provide customer support for SIXT Share via email and telephone, handling inquiries, complaints, and feedback. Must be fluent in German and have strong English (B2 or higher), excellent communication skills, and problem-solving abilities.

Leads sales strategy and growth for Spain, acquiring car dealer groups and achieving mid five-figure Annual Recurring Revenues (ARRs). Develops and implements a business plan, manages a sales team, and analyzes market trends. Requires 10+ years of sales experience, ideally in SaaS or digital B2B, with a strong automotive network.

Lead Engineer to design, develop, and maintain high-availability web applications for N26's internal operations. Responsibilities include architecting and building microservice applications using Java, Kotlin, and Spring Boot, integrating AI features, and mentoring team members. Requires experience with distributed systems, REST APIs, PostgreSQL, and CI/CD pipelines.

Supports the marketing team in achieving results through digital channels (website, social media, digital advertising). Develops strategies to increase website traffic, leads, and conversion rates. Coordinates campaigns across various digital channels and analyzes campaign performance.

The Assistant Bursar will provide financial and administrative support to the Director of Finance & Operations, ensuring effective financial management, operational efficiency, and compliance with Brighton College standards and Spanish legislation.

Marketing & Activations Coordinator Intern will write copy for various media, assist with content strategy, and support events and press activations. Must have a BSc in a relevant field, proven copywriting experience, and fluency in Portuguese and English.

Implementation Associate will support UK clients with onboarding and integration of software solutions. Responsibilities include client migration, SOW generation, documentation development, and post-implementation support. Requires excellent communication, project management, and technical skills.

As a Customer Success & Support Specialist, you will provide end-to-end support to clients, resolving platform issues, guiding verification processes, and advocating for client needs. You will build relationships, assist with onboarding, and identify expansion opportunities. Previous experience in customer success, account management, or support is required, along with excellent communication skills in English and Spanish.

Quantica seeks an exceptional CTO to lead the technological evolution of its proprietary additive manufacturing platform. This role demands R&D expertise and engineering leadership to scale hardware and software platforms for global deployment. Responsibilities include defining the technology roadmap, leading technical feasibility studies, and ensuring system reliability and scalability.

Business Analyst to support FX business process analysis, translate needs into user stories, and assist with backlog refinement and testing. Requires native or fluent Spanish and professional-level English.

Design, deploy, and maintain Kubeflow pipelines for image dataset processing. Manage Kubernetes clusters, implement infrastructure-as-code with Terraform, and establish CI/CD workflows. Implement monitoring and logging solutions, and collaborate with teams to improve platform efficiency.

Leads influencer marketing efforts in English-speaking markets, expanding outreach and driving revenue growth. Builds and strengthens relationships with financial content creators, designs campaigns, and analyzes performance. Requires 2+ years of influencer marketing experience, strong operational and strategic skills, and fluency in English and Spanish.

Develop and maintain automated IAM processes using SailPoint, Azure AD/Entra, and scripting languages. Support access certification and compliance campaigns through automation.