intern internship English-speaking jobs in Cartagena

Develop and manage strategic relationships with key technology integrators in Spain and Portugal. Drive indirect sales and business growth by identifying co-selling, cross-selling, and joint solution development opportunities.

Electrical Engineer with 4-5+ years of experience needed for international substation and MV/LV installation projects. Must have ETAP proficiency and fluent technical English.

Junior Software Developer to assist in the development and maintenance of internal applications. Support IT team with programming, testing, and documentation. Requires 1 year of experience and knowledge of C#, Java, HTML, CSS, Javascript, SQL, and Git. Interest in ERP systems is valued.

Allfunds seeks a Fullstack Developer trainee with knowledge of modern JavaScript (ES6+), React.js, Node.js, Express.js, and REST APIs. Responsibilities include frontend development with React.js, backend development with Node.js, testing, and collaboration on projects.

Business Development Director to lead sales and revenue growth in South East Europe. Experience selling software or enterprise technology to insurance companies required. Fluency in English and Spanish essential.

Experienced Debt Collection and Claim Recovery Specialist sought for UK and German cases. Investigate, negotiate, and recover international trade receivables.

Provides legal counsel and support for a variety of business operations, including contract drafting, negotiation, and review. Manages external legal counsel and provides legal analysis on dispute resolution and compliance matters.

Hospitality Intern to support tourism distribution, reservations, and guest services. Responsibilities include responding to customer inquiries, providing guest support, updating property information, and managing reservations.

Accounting & Administrative Manager to support the financial and administrative management of three growing companies. Responsibilities include coordinating accounting activities, organizing documentation, tracking expenses, and assisting with personal finance organization. Requires a degree in a related field, 1-2 years of experience, fluency in English, and experience with Sage Despacho and/or Sage 200.

As a 3D Visualiser, you will create photorealistic renderings, animations, and flythroughs of commercial interior projects. You will translate design concepts into compelling visuals for RFPs, presentations, and client communication.

Project Product/Quality Assurance (PA/QA) Engineer will establish, manage, and implement PA/QA arrangements within software development projects. The role requires a university degree in an engineering, technical, or scientific discipline and minimum 5 years of experience in Product Assurance, Quality Assurance, or software engineering.

The Business Unit Manager will lead the strategic and operational success of the CDMO business unit, overseeing sales, commercial operations, and product development. This role requires strong commercial thinking, a results-driven approach, and product technical skills.

Marketing Copywriter will translate brand and marketing strategy into clear, compelling copy across channels. Responsibilities include writing and editing website pages, campaigns, emails, and product launches. Must have 3-5 years experience as a Marketing Copywriter in tech, SaaS, or agency environments and a portfolio demonstrating strong execution across multiple formats.

Business Development Manager to develop and implement B2B sales strategies for digital campaigns across Poland and Europe. Requires fluency in Polish and English, 3+ years of experience in digital media sales, and a strong network within the digital industry.

Provides administrative support to a team of Partners and Directors in the financial services sector. Manages calendars, coordinates meetings, arranges travel, and maintains client records. Requires fluency in English and Spanish (C1 level) and proficiency in standard office applications. Minimum 3-4 years of experience as an Executive Assistant is required.

The Head of Legal will manage all Spanish legal matters, ensuring compliance, risk management, contract governance, and regulatory alignment. This role requires a senior legal professional with experience in technology, data, corporate, and regulatory matters.

Project Engineer with expertise in HVAC & Clean Room design for pharmaceutical facility projects. Responsibilities include design, feasibility studies, equipment specification, and project oversight. Requires a Bachelor's degree in Engineering and 2-3 years of experience in a similar role.

Designs and implements telecom solutions for voice and data domains (4G/5G and VoLTE) in Spain. Manages projects, reports to management and technical director, and ensures customer satisfaction. Requires a Master's or Bachelor's degree in Telecommunications or Computer Science, fluency in Spanish and English, and experience in core NFV voice or data projects.

An AI & Automations Operations Intern will design, build, and scale AI-powered operational systems. You will support day-to-day operations, assist with operational processes, and contribute to the creation and improvement of automations.

Senior Frontend Developer needed for groundbreaking projects in the aviation industry. Develop and implement innovative Airport Management solutions using Angular, TypeScript, and RxJS. Collaborate with backend developers, architects, and QA.