freelance English-speaking jobs in Valongo

Postdoctoral Research Fellowship available at REQUIMTE on the MARECIRCULARIS project. Focus on developing a biorefinery process to recover value-added products from marine waste. Requires a PhD in Chemistry, Biochemistry, Chemical Engineering, or a related field obtained within the last three years. Proven experience in biorefinery, catalytic processes, and bio-derived materials is necessary.

Software Security Engineer to define cyber security strategy, integrate security into software development, and implement security controls. Will build and optimize CI/CD pipelines, monitor system performance, and collaborate with development teams. Requires proficiency in C# and .NET, strong English skills, and 5+ years of software development experience.

Set long-term technical direction for Kraken’s AI/ML strategy. Own the architecture and evolution of core AI/ML systems. Lead cross-team efforts to standardize ML development and operational practices. Drive the design and delivery of complex, high-impact ML systems. Mentor Staff and Senior engineers.

Customer Retention & Sales Specialist to support the German market. Manage customer calls, provide guidance, identify needs, and promote products/services. Requires fluency in German and English, strong sales skills, and customer service experience.

Software Engineer with minimum 3 years experience in Java (8+) and frameworks (e.g. Spring). Experience with CI/CD tools (Gitlab, Jenkins), RESTful and SOAP APIs, and Agile development.

The Service Desk Agent provides responsive IT support, resolving incidents, handling service requests, and ensuring smooth daily operations. The role requires technical troubleshooting skills, strong customer service, and adherence to established processes.

National Key Account Manager will maximize business potential in the modern channel, building Joint Business Plans and managing client relationships. Requires a degree in Economics, Administration, Marketing, or Business Management and proven experience in leading FMCG companies.

Skilled RV/Campervan Mechanic needed to maintain and repair vehicles, ensuring customer satisfaction. Responsibilities include diagnosing and resolving mechanical, electrical, heating, and water system issues, performing maintenance, and collaborating with external suppliers. Must have 5+ years of experience, a valid driver's license, and fluency in English.

Lead the development and implementation of comprehensive testing strategies for software quality, performance, and reliability. Design, create, and maintain detailed test plans, test cases, and test scripts. Perform manual testing to identify defects and ensure functionality. Mentor and support junior Quality Assurance team members. Collaborate with developers, product managers, and stakeholders.

As a DevOps Release Manager, you will own and maintain the release calendar, coordinate end-to-end release activities, and ensure software reaches production smoothly. You will lead release readiness reviews, approvals, and go/no-go decisions.

Senior Product Marketing Manager will own product positioning, messaging, and go-to-market strategy. Responsibilities include defining value propositions, creating messaging frameworks, leading GTM strategy for new products and features, and building alignment across teams. Requires 7+ years of experience in Product Marketing, Product Strategy, or similar roles in SaaS, digital products, or PLG environments. Proven track record of executing GTM strategies with measurable success in product adoption and market traction is essential.

This Analyst will support the Global Operations organization in providing regulatory and governance support for business initiatives. Responsibilities include program management, research, analysis, and reporting. The Analyst will collaborate with teams to understand interactions, identify support needs, and streamline efficiency.

Manage overall store operations and performance, including sales, customer service, merchandising, and stock management. Lead and motivate a team, ensuring compliance with policies and procedures.

Join our German-speaking talent pipeline for diverse roles across Europe. Fluent German (C1/C2) and English (B2 minimum) required. Must have legal right to work in Europe.

The Senior Manager of GBS Continuous Improvement will drive continuous improvement across all global processes. This role will develop the CI strategy, support prioritization of initiatives, and collaborate with the CI Governance on methodology development and implementation. The Senior Manager will also lead the center continuous improvement team, collaborating with other GBS organizations on ESSA projects.

Project Manager for Engineering Change and Configuration (ECC) processes. Collaborate with product development, sales, and manufacturing teams to ensure successful implementation of product changes and configurations. Manage project timelines, track progress, and prepare reports. Requires a Bachelor's or Master's degree in a relevant technical field and experience managing product development projects. Strong communication and organizational skills are essential.

HR Business Partner / HR Lead will provide HR support to Azqore Lisbon Hub and Indosuez Wealth Management Portugal. Responsibilities include acting as the local HR point of contact, implementing Group HR policies, providing local HR expertise, supporting managers on operational HR topics, leading local recruitment activities, and ensuring compliance with Portuguese labor law.

The MIS Implementation Specialist manages and supports the group's MIS "iSAMS" system across assigned schools. This role ensures system accuracy, reliability, and alignment with academic, administrative, and regulatory requirements. The Specialist provides multilingual support, leads implementations, and collaborates with schools and IT teams.

SAP FI/CO Consultant with minimum 3 years experience required. Proven experience migrating from SAP ECC to S/4HANA and in-depth knowledge of FI modules (GL, AP, AR, AA, Tax) needed. Fluency in English and Portuguese is essential.

Senior Business Analyst to join a global team. Responsibilities include working with stakeholders, supporting the Product Owner, conducting meetings and presentations, managing change requests, and creating documentation. Must have 4+ years of BA experience, understanding of APIs, microservices, and headless approach, and experience in customer-facing communication.