freelance English-speaking jobs in Barreiro

TAP seeks a professional to negotiate and manage Sustainable Aviation Fuel (SAF) supply contracts, ensuring a secure and cost-efficient supply chain aligned with sustainability goals and regulations.

Develop, optimize, and maintain Oracle databases and PL/SQL code. Define and govern data models in collaboration with architects and business stakeholders. Analyze and improve database performance. Integrate Oracle databases with .NET / Entity Framework. Ensure data consistency, quality, and traceability.

Provide technical and data-related support to French-speaking customers via phone, email, and chat. Investigate issues, offer solutions, and collaborate with teams to improve service quality. Fluent French and basic SQL knowledge required.

Lead the design, development, and implementation of ETCS signaling solutions for railway projects. Provide technical expertise in signaling systems engineering, ensuring compliance with ERTMS standards. Collaborate on system architecture, integration, and validation of advanced railway signaling systems.

Danish-speaking Customer Service Representative to join a remote team supporting automotive and digital service projects. Handles customer requests, provides support across channels, resolves issues, and delivers a high-quality customer experience.

Capgemini seeks an AI Engineer & Data Scientist with 2+ years of experience in AI/ML delivery. Responsibilities include designing and implementing predictive and prescriptive AI solutions, building GenAI solutions, and implementing MLOps practices on Vertex AI. Must have strong Python/SQL skills and experience with Google Cloud.

Software Quality Engineer needed to join a team developing innovative software for the global telecom market. Responsibilities include creating test plans, executing automated tests, and collaborating with internal teams. Requires experience with mobile/web test automation tools, API testing, and Agile/Scrum methodologies.

Salesforce Marketing Cloud Technical Lead needed for hybrid role in Lisbon & Porto. Requires 5+ years of experience in Marketing Cloud development and architecture, including AMPscript, SSJS, SQL, and API integration. Bachelor's degree in a related field and Salesforce certifications are preferred.

Provides administrative support to the IP Manager in managing the global patent portfolio. Assists with invention disclosure processes, patent filings, and maintaining IP databases.

Provide administrative support to three C-level executives, managing calendars, coordinating meetings, and handling communications.

Lead and own performance engineering services end-to-end. Perform performance testing, tuning, and optimization across the full stack. Diagnose bottlenecks and improve system efficiency and reliability.

School Coordinator and Lead Science Teacher for Years 3-5. Teach Science (12 lessons/week) and coordinate academic programs, school operations, and parent communication. Must have experience with the Cambridge International Curriculum and be fluent in English.

Regional Marketing Manager for Microbiology FAST solutions (VITEK REVEAL, BACT/ALERT VIRTUO, VITEK MS PRIME, BIOFIRE BCID2) in EMEA. Develops and executes regional marketing strategies, adapts global frameworks, and supports launch management. Requires 3-5 years of IVD marketing experience, ideally in Microbiology diagnostics, and fluency in English.

Implement and migrate Identity Governance & Administration (IGA) tools. Design user lifecycle processes, role models, and access certifications. Work with directories and platforms from a security perspective. Contribute to governance initiatives, including workflow design and segregation of duties (SoD) analysis.

Information Systems engineer specializing in Microsoft Copilot to deliver collaboration technologies to a global enterprise. Responsibilities include analyzing business processes, establishing system specifications, coordinating testing and implementation, and creating integrations and automations. Requires 1+ year of MS Copilot experience and 2+ years of experience with Office 365.

Software Engineer (Fullstack) needed for permanent, full-time role. Collaborate with cross-disciplinary teams on full-stack projects. Minimum 2 years experience required, strong English communication skills, and ability to learn quickly.

Leads strategic regulatory and policy analysis for food systems and regulation. Requires deep expertise in EU and national food legislation, strong analytical skills, and experience advising food businesses on food safety, quality, and sustainability.

Graphic Designer needed for a hybrid role in Lisbon. Create graphics for multi-channel communications and campaigns, develop branding, and produce visual content. Must have proficiency in Adobe Creative Suite and a strong portfolio.

Develop and execute global communications strategies to expand awareness of xStocks, Kraken's tokenized equities framework. Shape the public narrative around tokenized equities and position Kraken and xStocks as trusted voices in the category. Prepare communications materials and execute PR moments to define the tokenized equities category. Track industry trends and partner with product, growth, business development, and marketing teams.

As an SAP Security Engineer, you will shape, advise, and continuously improve the security of our SAP environment. You will act as a central point of contact for SAP security topics, collaborate with project teams, and define security concepts for complex SAP landscapes.