intern internship English-speaking jobs in Cartagena

Visure is seeking a Requirements Management and ALM Consultant to guide enterprise clients through implementation and optimization of the Visure ALM platform. This role involves client engagement, configuration, training, and support, requiring strong systems engineering knowledge and customer communication skills.

Coordinates and oversees application penetration testing and Static Application Security Testing (SAST) services, ensuring compliance with security standards and timelines. Acts as the primary link between internal cybersecurity teams and external vendors. Requires 4 years of experience in cybersecurity fields and strong knowledge of application security and penetration testing methodologies.

Manage high-volume inbound and outbound sales motions across all stages of the sales funnel via phone, email, video, and social media outreach for B2B. Identify key point of contacts and actively manage sales pipeline. Document interactions on Salesforce and transition qualified leads to the onboarding team.

Manages strategic client relationships, driving business growth by understanding client needs and delivering tailored energy solutions. Leads the full sales cycle, collaborates with internal teams, and ensures successful project delivery.

Pareto.AI seeks an Applied Economist to evaluate an AI model's ability to replicate empirical economics research findings. Responsibilities include identifying suitable papers, writing prompts for the AI, and creating rubrics to assess its performance. PhD in Economics required, with hands-on experience in causal inference methods and familiarity with replication-friendly microdata.

The Product Designer translates complex workflows and customer needs into intuitive and efficient platform experiences. You will own the end-to-end design process, from research and wireframing to visual design and usability testing. You will work closely with Product Managers and Engineering to shape features and design for a platform used by studio professionals and brand teams.

Senior Fullstack Engineer to design, develop, and maintain scalable, secure, and efficient server-side applications. Experience in microservices architecture, API development, database management, and frontend development is required. Collaborate with frontend engineers, product managers, and other stakeholders to build robust backend solutions.

Remote CDP Platform Manager needed to support a new project. Responsibilities include configuring, integrating, and maintaining the Treasure Data CDP, translating business requirements into technical specifications, and facilitating integrations with marketing automation platforms. Fluency in English is required.

Leads regional traffic strategy and growth for Western Europe e-commerce. Manages traffic across Mi.com, affiliate marketing, PPC campaigns, and Amazon. Analyzes performance data and optimizes strategies.

Marketing Assistant to support brand presence in Spain. Organizes events, manages leads, and collaborates with international marketing team. Requires 3+ years experience in event organization, lead management, and customer support. Must be proficient in English (C1-C2).

Manages NCC Valencia operations, service quality, and compliance. Acts as escalation point for incidents and reports to SGITT management. Leads risk management and ensures adherence to ISO 20000/27001 governance. Requires 3+ years of NCC/NOC/ICT experience and ITIL v3 Expert or ITIL 4 MP certification.

Lead Electronic Engineer will be responsible for hardware conception, design, and build of new products and systems. Tasks include electronic circuit design and analysis, PCB layout, simulations, and interaction with customer technical teams. Requires 6-8 years of experience in hardware electronic design and proficiency in Cadence Allegro.

Design and deliver scalable enterprise solutions aligned with business and IT strategy. Define end-to-end architectures and drive innovation across automation, data, and AI platforms.

Brand Marketing & Digital Creation Intern to shape visual identity and online presence. Will design website, templates, digital assets, and LinkedIn presence using AI tools and no-code platforms. Fluent English required.

Doofinder seeks a Business Development Manager to drive business growth in the Polish market. This role involves identifying and prospecting clients, managing the full sales cycle, and exceeding revenue targets. The ideal candidate has 1-2 years of B2B sales experience, a proven track record of closing deals, and strong communication and negotiation skills. Native Polish with fluent English or Spanish is required.

Lead a team of AI engineers developing AI solutions for the financial and legal sectors. Design and implement AI architectures, focusing on LLMs, NLP, and predictive analytics. Collaborate with stakeholders to define the AI product roadmap.

Senior/Staff Software Engineer to design and evolve core platform services, APIs, and infrastructure abstractions. Experience with Go, Python, Kubernetes, and cloud-native architectures required.

Experienced Project Manager needed for long-term, onsite role in Madrid. Lead logistics system implementations, manage cross-functional teams, and ensure project success. Proven experience with Urbantz/Knapp or SAP TM/EWM required.

Cloud Platform Architect needed to define and evolve cloud architecture standards, ensuring scalable, secure, and efficient environments.

Upstream Technician needed for biosimilar molecule production. Responsibilities include cell culture process development, cell clarification, and technical leadership for analysts. Requires a degree in a relevant field and 1+ years of experience in upstream activities. Must be fluent in Spanish and have working knowledge of English.