freelance English-speaking jobs in Valongo

Lisbon Summer Internships 2026 offer opportunities to contribute to space, defense, security, and mobility projects. Interns will apply knowledge in areas such as software development, cybersecurity, and artificial intelligence. Applicants must be in their 3rd year of a Bachelor's or Master's degree in a related field with a high level of English.

The Buyer is responsible for defining and implementing purchasing strategies, ensuring alignment with Group and site objectives. They manage supplier relationships, negotiations, and performance while contributing to continuous improvement and cross-functional collaboration.

Retail Marketing Trainee internship in Porto Salvo, Portugal. Develop strategic plans, assist with communications strategies, and contribute to new product launches. Must be fluent in Portuguese and have a Bachelor's or Master's degree, preferably in Marketing or Business/Economics.

Regulatory Affairs Technician to support global review and analysis of technical documentation, including DMFs. Assist in preparation, compilation, and maintenance of regulatory dossiers. Collaborate with global team members on regulatory strategies and submissions.

Senior Backend Developer needed to design, develop, and maintain a scalable LLM agent framework using Python and cloud-native architecture. Experience with async Python (FastAPI, aiohttp) and debugging across service boundaries is required.

Technical Elevator Installation Technician needed for Schindler in Algarve. Responsible for elevator installation, ensuring quality, safety, and customer satisfaction. Requires training in Electronics, Electrical, Mechanical or similar, and at least 1 year of elevator assembly experience.

Support the CDPH global feasibility team in scenario modeling, risk and opportunity assessment, and country allocation. Provide data-driven insights and visualizations to support strategic decisions. Collaborate with internal and external data scientists and providers.

Leads two to four cross-functional AI engineering teams, ensuring high-quality AI product delivery and operational excellence. Oversees system scalability, reliability, and security across the AI portfolio. Drives the creation and update of the AI tech roadmap. Manages team staffing and development. Requires a Bachelor's degree in a related field and 5-7+ years of experience in a tech leadership position managing AI, Data, and ML engineering teams.

The Host will welcome and assist guests, ensuring a personalized and memorable experience. Responsibilities include check-in/check-out, managing reservations, providing information about hotel services and local attractions, and handling guest requests.

Presentation Designer will create impactful presentations for a global management consulting firm. Collaborate with project teams to design and layout presentations using PowerPoint and MS Office Suite. Requires 1-3 years of experience, fluency in English, and strong design skills.

As a Reservations Agent, you will book guest reservations, provide information about the hotel and city, and handle guest requests and complaints. You will also assist with other duties as assigned, such as running reports and staying abreast of current rates and promotions.

Edit and proofread Portuguese-language content for grammar, spelling, punctuation, syntax, and clarity. Ensure consistency in tone, style, formatting, and terminology. Improve structure, readability, and logical flow.

Evaluates health-related prompts, making judgments based on guidelines to support machine learning. Provides feedback on AI model output, focusing on areas like helpfulness, factuality, and cultural appropriateness. Documents issues and collaborates with team members. Requires native German fluency and strong analytical skills.

Senior SuccessFactors Employee Central Specialist will own the Employee Central module, define best practices, and customize configurations. The role involves managing projects, analyzing HR process requirements, and troubleshooting complex issues.

Backend Engineer will build and maintain highly scalable infrastructures, ensuring seamless data normalization and processing. You will research, develop, and deploy solutions at scale, focusing on building robust, high-performance systems.

QA UAT Tester will ensure the Hugo Boss In-Store App, Customer Account, and Loyalty program meet business requirements. Responsibilities include defining test structures, developing test plans, conducting end-to-end business testing, and ensuring data quality.

Provides first-line operational support for routine network tasks, assisting senior engineers with troubleshooting and maintaining accurate operational records.

Data Loss Prevention and Insider Risk Analyst will implement and improve data protection controls across the organization. Responsibilities include managing Microsoft Purview features, investigating security incidents, and developing security reporting.

Customs Specialist will issue import clearance instructions, manage the C88 document, and analyze import and export flows. Requires a degree in business, logistics, law, or customs, proficiency in MS Office, and fluency in English.

Backend Software Engineer to design, develop, and maintain scalable backend systems and APIs. Requires 3+ years Python experience, Django, Docker, PostgreSQL, and MongoDB.