freelance English-speaking jobs in Barreiro

Clinical Research Associate II will conduct site visits, ensure protocol compliance, and collaborate with investigators. Requires a Bachelor's degree, 2+ years of experience, and knowledge of clinical trial processes and ICH-GCP guidelines. Must be able to travel at least 60%.

Growth Marketing Manager will build and execute a holistic growth marketing strategy focused on scalable lead generation, pipeline growth, and revenue impact. Responsibilities include owning inbound funnels, driving structured experimentation, translating insights into assets, and collaborating on go-to-market plays.

Senior Business Analyst with a minimum of 5 years of experience in IT/Financial project management. Requires administration experience with relational database tools, strong understanding of Finance concepts & processes, and a financial/accounting background. Experience with reporting tools (e.g., Essbase, Hyperion, Power BI, SAP, Primavera, Business Objects) is needed. Experience with Tagetik is a plus.

Provide customer service support for a client's social media platforms. Investigate and resolve issues reported by customers, ensuring service quality and adherence to service levels.

Senior Product Manager to oversee product direction and market positioning for GMS telecom portfolio. Translate business needs into successful offerings and guide products from concept to market introduction.

OT & Network Engineer to integrate infrastructure teams, plan and implement OT networks, and ensure secure connectivity between industrial and corporate environments. Requires experience in industrial automation, network management, and cybersecurity.

Mechanical Development Engineer will participate in the full product lifecycle, from requirements evaluation to series production. Responsibilities include 3D design, 2D drawings, technical solution development for ADAS, and collaboration with manufacturing engineering.

Senior Full-Stack Engineer will design, build, and scale back-end services in Golang and UI/UX experiences in React. This role collaborates with the Billing and Partner team to deliver solutions that are modern, scalable, and efficient. The ideal candidate has 7+ years of experience as a full-stack engineer with exposure to SaaS products used by many customers.

Software Engineer with 5+ years of experience in Python and/or Java, advanced SQL and Grafana skills, and fluency in English (B2 level) sought. Hybrid role, 3 days per week in Porto, Portugal. Must be based in Portugal with Portuguese or EU citizenship or a valid Portuguese work permit.

Business Strategy & M&A Analyst needed for maternity cover. Provide central support to organizational areas, product verticals, and senior board members. Support overall business strategy with market intelligence and assist in the strategic decision process. Review attractiveness of new business and investment opportunities.

IT Functional Specialist will support business users by implementing solutions within the IT IDM landscape. Responsibilities include coordinating changes, creating customizations, troubleshooting issues, and providing user training. The role also involves monitoring application interfaces, ensuring smooth integration between systems, and managing incidents, demands, and changes according to ITIL best practices. Documentation of IT IDM processes, interfaces, and user guides is also required.

Leads and mentors high-performing technical teams, translating organizational vision into actionable plans. Possesses a strong technical background in C++ and experience across diverse organizations.

Senior Scrum Master to lead multiple engineering teams, facilitate Scrum events, support Product Owners, and promote agile practices. Requires 5+ years of experience, fluency in Portuguese and English, and a Scrum Master certification.

Software Engineer will contribute to the delivery of high-quality software solutions. Responsibilities include task breakdown and definition, contributing to process improvement, root cause analysis and problem mitigation, and independent task delivery. Must have experience with Git, Command Line, NodeJS or TypeScript, React, unit tests, and CI/CD pipelines.

C#/C++ Developer with 4-5 years of experience in backend development and Windows applications. Strong English skills required for international projects. Hybrid work model in Vila do Conde. Experience with firmware or embedded systems is a plus.

Senior Project Manager to lead complex projects in industries such as Medical Devices, Railway, Aerospace, Defence, and Energy. Requires 5+ years of experience managing projects, strong leadership, communication, and problem-solving skills.

The Católica Biomedical Research Centre seeks a Head of Imaging Unit to provide expert imaging support to researchers, establish and run a state-of-the-art Imaging Unit, and build capacity across the Centre. The successful candidate will have a degree in Biomedical Sciences, Bioengineering, Life Sciences, Physics, Optics, or a related field and at least 5 years of experience in a research environment. Strong hands-on expertise in advanced microscopy techniques and proficiency with relevant software are required.

Two Scientific Initiation Grants (BII) are available within the LagusColl High Performance Collagen Glue project. Successful applicants will work on tasks related to collagen extraction, modification, characterization, and incorporation into PVAc adhesives. The grants are funded by COMPETE 2030, Portugal 2030, and the European Union.

A Research Scholarship is available for a PhD student to assess the ecological, economic, and social relevance of Blue–Green Infrastructure in the Sorraia River basin. The scholarship is for 12 months, potentially renewable up to 48 months. Applicants must have a Bachelor's or Master's degree in a relevant field and experience in spatial analysis, data analysis, and ecological research. Fluency in English and Portuguese is required.

Senior Full-Stack Software Engineer to design, develop, and optimize scalable software solutions. Requires 10+ years of experience in software development with expertise in Java, JavaScript, TypeScript, and Python. Proven experience in Full-Stack Development with modern Front-End Frameworks (React, Angular, or Vue) and Back-End Technologies (Node.js, Django, Spring Boot).