freelance English-speaking jobs in Valongo

Designs the conversational "personality" and logic for AI agents, mapping dialogue flows and writing engaging messages. Analyzes data to identify issues and opportunities, ensuring quality through testing and review. Collaborates with UX, language, and tech teams to create seamless user experiences.

Accounting Technician to support financial operations, manage revenue recognition for a SaaS model, track expenses, and collaborate with leadership.

Project Manager to coordinate Visa and Mastercard payment system initiatives, including memberships, certifications, and operational support. Requires 3+ years of project management experience, strong understanding of Visa/Mastercard systems, and proven experience delivering acquiring platform projects.

Senior .NET Software Engineer to architect and maintain large-scale applications. Experience with .NET, distributed architectures, Azure, gRPC, EventHub, AKS, and Terraform required. Contribute to GitOps practices, technical mentorship, and collaborative Agile environments.

The Sanctions and Embargoes B2 Officer performs independent reviews of escalated sanctions alerts, deciding to release, reject, or escalate them based on investigations and supporting documents.

Process Manager analyzes and improves company processes, supports certifications, conducts audits, and assists with project documentation. Requires a university degree, experience as an internal auditor, and expertise in ISO 9001, ISO 27001, and TISAX.

Research and Development Engineer to conduct research, synthesis, and characterization of graphene solutions for electromagnetic interference shielding. Develop graphene-based technologies tailored to market needs and write technical documentation. Requires proficiency in characterization techniques and software tools. Master's or PhD in a related field.

Senior QA Automation Engineer to design, develop, and maintain automated test suites using Robot Framework, Selenium, Python, Java, and other tools. Experience with REST APIs, RMI services, SQL, Oracle, CI/CD pipelines (Jenkins), and Kubernetes is required.

Native European Portuguese voice talent sought for AI voice cloning project. Record scripts, prompts, and conversations to develop a high-quality AI model. Must have a clear, consistent, and professional speaking voice.

Create high-performing ads for multiple ecommerce brands. Edit and assemble video footage into paid social ads (Meta, TikTok, YouTube Shorts). Collaborate with creative strategists, designers, and the performance team to develop story-driven creatives. Ensure all creatives are delivered in the correct formats and specs.

Oversee feasibility studies, collaborate on site and country list development, and ensure data accuracy. Analyze project statuses, identify risks, and manage feasibility systems. Provide training and mentorship to staff. Lead standalone feasibility services, including research, data collection, and reporting.

Design, develop, and maintain cloud-based EMS/NMS and Inventory Management solutions. Implement OSS functionalities across NMS, Inventory, Assurance, and Fulfilment domains. Develop and customize inventory and topology data models.

Manage relationships with high-net-worth clients, promote luxury properties in the Porto region, and negotiate sales. Must have a driver's license and own vehicle.

Freelance Python Test Framework Specialist needed for AI projects. Coordinate cross-language migration workflows, design test frameworks, and build Docker images. Requires 5+ years Python experience, familiarity with C, Rust, Go, and B2 English proficiency. Project-based, part-time, with rates up to $30/hour.

Critical Manufacturing seeks a Performance Management Control & Quality Specialist to review processes, provide quality tools to software engineers, and create/update dashboards and reports. The role involves performing internal audits, analyzing improvement suggestions, and identifying corrective actions.

Customer Support Representative needed for a fast-growing medical device software company. Provide prompt and effective support for a cloud-based medical image analysis platform. Manage tickets, communicate with customers, and collaborate with internal teams. Requires 3+ years of customer support experience, proficiency in English and German, and familiarity with ticketing tools.

Provide Dutch and English language support to customers of a global video streaming platform. Handle inquiries, offer technical and account assistance, and ensure a positive customer experience.

Full-Stack Developer will design, develop, and maintain software solutions for a sports entertainment platform. Responsibilities include unit testing, code improvement, and documentation. Requires experience with agile methodologies, clean code, design patterns, and JavaScript frameworks like ReactJS. Backend experience with Java or similar OOP languages is preferred.

Edge AI Product Marketing Manager will translate complex AI and edge computing technologies into customer-facing value. Responsibilities include developing sales assets, leading technical proposal development, and providing product training. Requires an MSc in Engineering, 8+ years of experience in technical product management, and deep understanding of AI inference workloads.

Manage all daily operations of a 136-room Moxy Lisbon hotel, ensuring alignment with Hively Hospitality, Moxy brand, Marriott requirements, and local regulations. Drive hotel and F&B performance, exceeding qualitative and quantitative objectives.