freelance English-speaking jobs in Barreiro

Redbridge International School seeks a qualified Science Teacher to provide maternity cover during the Summer Term. The role involves delivering engaging science lessons across Cambridge Lower Secondary and IGCSE Coordinated Science.

Business Development Specialist will drive growth across Web3, Web2.5, SaaS, and fintech markets. Responsibilities include identifying new business opportunities, building client relationships, and negotiating contracts. Success in this performance-driven role is rewarded with uncapped earning potential.

Develop, maintain, and evolve test automation frameworks. Implement and execute API and performance tests. Document tests, frameworks, and automation processes.

Mid-Level QA Automation Engineer to design, implement, and maintain automated tests for web applications and APIs. Execute regression test suites, identify bugs, and contribute to improving test coverage. Work with existing automation frameworks (Playwright, Cypress, Selenium) and CI/CD pipelines. Collaborate with developers, product managers, and other QAs.

Mechanical Design Engineer needed for a growing team. Develop and detail mechanical designs in 2D and 3D CAD software. Collaborate with international teams on diverse projects.

Provide live translation and support communication between Ukrainian and English speakers. Must be fluent in Ukrainian and English, possess strong communication skills, and have a customer-focused approach.

Provide customer service to Danish speakers via phone, email, chat, and social media. Resolve complaints, offer product and service information, and maintain customer interaction records.

Senior Data Quality Analyst to improve data accuracy and reliability. Responsibilities include implementing data quality practices, performing data analysis, monitoring compliance, and developing dashboards. Requires 5+ years of experience in data quality, data governance, or related roles, strong SQL skills, and proficiency in Power BI.

Manage test projects, including budget, timeline, quality, and scope. Develop and communicate test strategies and deliverables. Ensure user participation and stakeholder communication through test reports.

The UGC Content Asset Manager will produce and adapt high-quality video content, curate and optimize UGC assets from sources like ViralHog and NewsFlare, and analyze channel performance to develop growth strategies.

Digital Content Creator needed for full-time or part-time remote role. Create social-first content, including short-form video, UGC, and on-location shoots. Must have a portfolio demonstrating video editing and content creation skills.

As a Senior Engineer on the Observability Team, you will partner with product teams to define and implement observability solutions that align with customer experience. You will design and automate scalable telemetry pipelines, harden platform infrastructure, and contribute to the development of observability-focused tools and services.

Cyrex seeks a Web Penetration Tester with 5+ years of experience in web and mobile penetration testing. Responsibilities include penetration testing web apps, mobile apps, and APIs, reviewing source code for security issues, and producing clear reports with PoCs and remediation guidance. Strong OWASP Top 10 knowledge, manual testing skills, and Burp Suite expertise are required.

Leads and manages all Corporate Social Responsibility (CSR) and Environment, Health and Safety (EHS) activities. Ensures compliance with legal requirements, internal procedures, and certification standards. Manages audits, non-conformities, and complaint resolution. Monitors workplace conditions, implements corrective actions, and oversees emergency systems. Maintains CSR and EHS management systems and documentation. Conducts training programs and promotes employee awareness. Collaborates with cross-functional teams to ensure alignment on CSR and EHS matters. Monitors performance indicators, proposes improvements, and supports initiatives related to decarbonization, circular economy, and chemical management. Represents Nilorn in interactions with clients, suppliers, auditors, and regulatory entities.

Experienced Senior Full-Stack Developer with 7+ years of PHP and 5+ years of React experience sought for a 12-month contract. Must be fluent in Portuguese and comfortable working across the full development lifecycle.

Mondelēz International seeks recent graduates with a Bachelor's or Master's degree in Business Administration, Economy, Marketing, or Management for a 12-month internship program.

The IT IAM Project Management will lead Identity and Access Management projects, acting as a scrum master for Sailpoint Identity IA projects. Responsibilities include leading the deployment of a Key Management System and promoting test coverage.

Vexia - Tech & Media Group seeks a Paid Media Manager to manage and optimize Search and Display campaigns across multiple platforms. Requires fluency in Portuguese and English, proficiency in Google Ads, and experience with Google Ads. Strong interest in sports and basic understanding of sports betting are also required.

Shape the technical direction of a consumer-facing platform as a Tech Lead Full Stack Engineer. Architect and code robust, scalable features across frontend and backend, manage a team of developers, and modernize a complex codebase.

Neotalent Conclusion seeks a .NET Fullstack Developer with 2+ years experience. The role involves API development, frontend development (Angular), and Git experience. You will join a team developing internal applications for a leading retail client.