freelance English-speaking jobs in Valongo

Clinical Research Coordinator needed to support oncology studies at a hospital site in Lisboa, Portugal. Native Portuguese fluency and clinical research coordination experience are required.

Lead Backend Engineer to design, build, and own Python microservices for an insurance platform. Drive architectural discussions, mentor engineers, and champion engineering excellence. Collaborate with cross-functional teams to deliver user and business value.

Customer Support & Billing Specialist for a large-scale public services operation. Handles customer queries, registers requests, performs billing activities, and ensures data accuracy. Requires native or C1 Dutch and good English, strong communication skills, and experience with administrative processes.

Senior Java Developer will design, build, and improve a low-code platform. Collaborate with product, design, and QA teams. Must have 4+ years of experience as a Java developer, Spring framework, and API development.

Senior Business Analyst to execute Fresenius Medical Care's compliance program, focusing on HR Services Audit & Compliance. Responsibilities include global internal controls design and implementation, audit coordination, risk management, and remediation. Requires a Bachelor's degree, 5-6 years of experience in HR or Compliance/Audit, and advanced English.

Customer Success Associate will provide technical support and training for The BHive, a chemical management platform. The role involves collaborating with cross-functional teams, driving product adoption, and serving as a product expert.

Lead a distributed SAP FICO application team supporting enhancements and projects in a complex IT landscape. Provide support for business area FICO in process design, customization, and development coordination. Collaborate with central SAP FICO teams, other IT teams, and vendors.

Power BI Specialist to design, build, and maintain financial dashboards and reports. Develop data models using Power Query and DAX, integrate data from various systems, and support budgeting, forecasting, and variance analysis.

Senior/Lead Backend Engineer (Staff-level mindset) with strong Go and production-grade peer-to-peer (P2P) systems expertise. Designs and develops scalable, distributed backend applications and microservices. Builds and optimizes mission-critical software with a focus on system programming, concurrency, and performance tuning. Collaborates within an Agile/Scrum team and contributes to the full application lifecycle.

Senior Robotic Startup Specialist will lead the integration of Medtronic's HUGO™ RAS-system into hospitals, developing program goals, training surgeons and staff, and supporting technology adoption. Requires a Bachelor's Degree, fluency in English and Portuguese, and over 2 years of experience in operating rooms and surgical procedures. Willingness to travel throughout the UK & Ireland (>75%) is required.

Develops and industrializes new products from concept to mass production, ensuring technical feasibility, quality, and timely delivery. Supports product design, transfer to production, and optimization for European manufacturing. Creates 3D models, technical drawings, and conducts technical analysis. Collaborates with engineers, production, and quality teams.

The Claim Assessor evaluates complex claims to ensure compliance with regulations, approves, reduces, or rejects them, and provides transparent explanations.

The Procurement Specialist facilitates governance, oversees supplier performance, supports RFP processes, negotiations, and contracting within Travel, Meetings, Cards, and Fleet categories.

Senior Software Engineer with 4+ years of experience in C# (.NET), microservices, and NoSQL databases (ElasticSearch preferred). Leads technical initiatives, mentors engineers, and drives best practices within Agile development environments.

Senior Android Engineer needed to support the growth of Speechify's Android app and develop new features. Responsibilities include owning features, improving reliability metrics, and collaborating with design and product teams. Requires 5+ years of software engineering experience, familiarity with Android components, and strong Kotlin skills.

Develop and maintain web applications using React, React Remix, Tailwind, Redux, Axios, and other JavaScript technologies. Collaborate with design and product teams to create user-friendly applications.

Develop and maintain Ubuntu-based container images, focusing on performance, security, and usability. Work with CI/CD systems to automate image building, testing, and publishing. Contribute to open-source projects and collaborate with teams to ensure high-quality container images.

Senior Data Scientist will build production-grade machine learning models for a leading technology-driven gaming company. This role requires experience with the complete ML lifecycle, from research through production deployment. Candidates should have a strong understanding of machine learning algorithms, experience with Python ML libraries (scikit-learn, pandas, NumPy), PySpark for distributed data processing, and software engineering best practices. The ideal candidate will have a proven track record of delivering machine learning models to production environments with real users and business impact.

Inside Sales Specialist focused on customer renewals within the DACH region. Collaborate cross-functionally to ensure customer retention and expansion. Requires 1-2 years of experience in sales, customer retention, or customer service, ideally within the IT/SaaS environment. Fluency in German and English is mandatory.

Senior Sourcing Manager, Soft Home (Europe) will build and manage Quince's vendor base across Europe for home textiles, focusing on bedding and window treatments. This role requires 8+ years of experience in sourcing, production, or supply chain roles within home textiles, a strong network of European textile manufacturers, and the ability to set and execute a strategy for scaling a high-volume product line.