freelance English-speaking jobs in Valongo

Network Engineer with 3-5 years of experience required. Responsibilities include monitoring, troubleshooting, and maintaining network and server systems. Must have strong knowledge of networking protocols and technologies, experience with SD-WAN and NGFW solutions, and CCNA certification.

Freelance peer reviewers with a PhD/MD and two recent publications in coronary artery disease are needed to assess manuscript novelty, study design, literature review, results, and provide constructive feedback. Prior peer review experience and familiarity with online review systems are desirable.

Portuguese-speaking Sales Development Representative to support a vacation rental client. Focus on outbound calling, lead qualification, and transferring qualified leads to Sales Managers. Requires fluency in Portuguese and English, 3+ years of cold calling experience, and comfort with CRM systems.

Full-Stack Engineers needed with strong React, Node.js, and Next.js experience. Solid knowledge of TypeScript, RESTful APIs, microservices, CI/CD, Docker, and cloud platforms required. Agile mindset and English proficiency (B2+) also needed.

Senior HR Manager to lead strategy and operations for hospitality brands. Responsibilities include talent acquisition, performance management, employee relations, learning & development, and policy implementation. Requires 5+ years of HR experience, preferably in hospitality, and strong knowledge of employment law.

The Director, People Programme Management will oversee People programs aligned with business goals and manage high-impact initiatives. Responsibilities include program managing the performance and merit cycle, leading HR due diligence for acquisitions, and planning post-merger integration.

Data Scientist (Mid-Level) will develop and evaluate predictive maintenance algorithms for drives and motors. Requires proficiency in Python, data analysis, and machine learning. Strong communication and teamwork skills are essential.

.NET and Python Developer needed with 6+ years of C# and .NET Core experience. Must have Python, object-oriented programming, design patterns, web API development, and SQL/ORM framework knowledge.

Hardware Product Manager to design and scale electronics products for off-grid communities. 5+ years experience in hardware product management, ideally in power electronics, energy systems, or embedded hardware. Experience with volume manufacturing and product fundamentals required.

Senior Front-End Engineer to design, develop, and maintain high-performance applications using React and TypeScript. Ensure a seamless user experience by implementing best-in-class UI/UX practices. Collaborate with product and design teams to translate wireframes into functional UI. Contribute to the Front-End Engineering Chapter and mentor junior engineers. Requires 5+ years of front-end web development experience, with at least 2 years in a Senior role. Solid expertise in React and TypeScript, CSS, and experience with REST and GraphQL APIs. Strong command of front-end security principles and performance optimization. Professional proficiency in written and spoken English.

Data Analyst will utilize analytical and visualization techniques to solve business problems across various geographies. Responsibilities include running Python-based analytical engines, collecting and analyzing data, creating data analysis models, and executing ETL processes.

Senior Identity and Access Management Specialist will configure, install, and maintain IAM systems, ensuring secure access governance. Responsibilities include automating processes, integrating IAM platforms, managing databases, and troubleshooting issues. Requires 2+ years of experience in IAM, strong knowledge of Usercube/Netwrix platforms, and proficiency in PowerShell, CLI, and REST APIs.

Fullstack Developer with 5+ years of experience in e-commerce environments. Develops and implements responsive user interfaces, integrates third-party applications, and optimizes for SEO. Requires expertise in Angular, JavaScript, NodeJS, and cloud platforms.

HR Generalist will manage HR administration and payroll for employees in Germany and the Netherlands. Collaborate with local HR teams across Europe on workforce planning and provide HR support to managers. Coordinate HR policies, procedures, and processes. Support employees and managers on HR topics such as recruitment, onboarding, performance, and development.

Backend Engineer will design, build, and maintain reliable, scalable systems for Coverflex's compensation platform. Responsibilities include collaborating with product managers and designers, shipping features, and ensuring system reliability. Must have strong backend engineering fundamentals, a production-ready mindset, and experience shipping in small PRs with CI/CD.

Senior Java Spring Boot Developer sought for highly scalable distributed systems. Requires 4-6 years of Java experience, API development, and experience with Spring Boot, relational and non-relational databases.

Fortil seeks a Product Owner to implement a digital platform for project, portfolio, and knowledge management. Responsibilities include managing the product backlog, gathering requirements, and ensuring tool alignment with business needs. Requires 3+ years of experience as a Product Owner, experience with Project & Portfolio Management tools, and proficiency in Agile methodologies.

Product Manager will contribute to product strategy and roadmap definition, drive product planning and execution, and translate product strategy into each phase of the product life cycle.

BlackBox Strategies seeks a senior Outbound & Lifecycle Marketing Specialist to own execution of B2B and B2C messaging across email, CRM, and SMS. This role requires 4+ years of hands-on experience executing email and CRM campaigns, supporting both B2B and B2C audiences, and a strong understanding of deliverability, segmentation, and channel tradeoffs.

Business Development Representative (BDR) / Sales Development Representative (SDR) for a fast-growing B2B SaaS startup. Run outbound campaigns, qualify prospects, and book meetings for senior leadership. 1-3 years of B2B or SaaS sales experience required. Must be based in Portugal or European time zones.