freelance English-speaking jobs in Valongo

The Faculty of Science and Technology of NOVA University Lisbon is seeking a Junior Researcher in Arts and Humanities, subarea of Conservation and Restoration, with emphasis on Conservation Sciences. The selected candidate will conduct research activities within the scope of the SCARLET project, prepare historical reconstructions, and contribute to the project database. The position is for a fixed-term contract lasting 33 months.

CloudBrothers seeks experienced Data Center Technicians to maintain and monitor data center infrastructure in Sines, Portugal. Responsibilities include hardware installations, troubleshooting, cabling, and ensuring compliance with safety and security standards.

Provide Dutch-speaking customer support via chat, email, and phone for leading global brands in digital advertising. Troubleshoot technical issues and assist with the self-serve advertising platform.

This role involves end-to-end project ownership of network deployments, including infrastructure migrations and data center builds within the EMEA region. Responsibilities include working with stakeholders, managing resources, configuring devices, and creating documentation.

Lead the end-to-end search experience for the consumer app, defining and executing a product strategy aligned with Booksy's marketplace growth.

Experienced Python and TypeScript backend developer needed to design, build, and optimize a scalable AI-powered financial platform. Responsibilities include integrating financial APIs, collaborating with front-end and marketing teams, and troubleshooting production issues.

Lead and coordinate daily team operations, ensuring efficient workflows and performance. Enforce company standards and guidelines. Drive performance and talent management, promoting a safe work environment and continuous improvement initiatives.

Senior ServiceNow IT Consultant to enhance and optimize ITSM processes, expand ITOM capabilities, and contribute to the rollout of Strategic Portfolio Management (SPM).

Research Initiation Grant for a Bachelor's degree holder enrolled in a non-degree-awarding course, focused on the development of didactic knowledge in mathematics using artificial intelligence in pre-service teachers.

The Creative Strategist, UGC develops and executes a scalable UGC plan, translating marketing objectives into creative strategies and content briefs for creators. This role focuses on defining content needs, identifying creators, and shaping content across paid, social, and owned channels.

IT lawyer with 5-7 years of experience managing technology contracts (software licenses, SaaS, PaaS, IaaS, hardware, licensing, development, support, and consultancy). Provides legal support to Airport and Airline Operations and Border Control affairs. Global role involving contract management with international customers.

The Business Analyst translates business needs into actionable requirements, working with stakeholders and technical teams. The role involves documenting requirements, supporting agile delivery teams, and contributing to data-driven decision-making.

The OT Cybersecurity Engineer maintains security measures, assessments, and incident response for Operational Technology (OT) environments. This role focuses on protecting industrial control systems (ICS) and critical infrastructure from cyber threats. Responsibilities include risk assessment, vulnerability analysis, incident response, security monitoring, and staying updated on OT security threats and trends.

Engage with a vibrant beauty community, manage social media conversations, and shape brand interactions. Respond to consumer comments, foster online discussions, and ensure a positive customer experience. Native-level German and English required.

The SocialDigital Lab for Public Policy is seeking a Research Grant holder to define and automatically calculate data-based performance indicators measuring the impact of research on society, academia, and public policy. The successful candidate will develop and use these indicators in a dashboard, analyze data from various sources, and contribute to the lab's activity reports. Applicants must hold a bachelor's degree in a relevant field, be enrolled in a master's program or non-degree program, and have experience in programming for machine learning, training large language models, and using management platforms for large language models.

Onsite Service Engineer will resolve customer IT issues by performing break-fix activities, coordinating resources, and managing parts inventory. Requires 2+ years of experience in technical field services and customer-facing roles. Fluency in English is essential.

Lead and grow a product team to shape the future of Bloom, a women's health solution that blends AI and clinical expertise. Own the product vision, strategy, and roadmap for the B2C clinical platform, ensuring alignment with business goals, member needs, and clinical best practices.

Research Fellowship for Masters-InovArt3D. The fellowship is for a Master's degree in Mechanical Engineering, Materials Engineering, Biomedical Engineering, or related fields. The work plan involves material selection, design, micromachining, additive and subtractive manufacturing, material characterization, and microstructural and mechanical analysis. The fellowship is for 12 months with a starting date in March or April 2026.

Research Grant (RG) in the scope of R&D projects "LiquidGreen - Production of Liquid Fuels by the electrochemical conversion of biogas" at the Department of Mechanical Engineering / TEMA–Centre of Mechanical Technology and Automation.

Capgemini Engineering seeks a System Administrator Engineer with 2-4 years of experience. Requires expertise in Windows Server, Linux systems, Microsoft SQL Server, and networking. Experience with virtualization, cloud platforms, and monitoring tools is essential.