freelance English-speaking jobs in Valongo

Junior Legal Counsel to provide legal support across various areas of a leading shopping center management company. Responsibilities include drafting and negotiating lease agreements, supporting mall income and retail media teams, and assisting with legal matters related to real estate management.

Designs, builds, and operates the ML Ops / LLM Ops pipeline for production ML / LLM traffic. Responsibilities include ingestion, storage, slicing, classification, failure surfacing, and regression alerting. Requires experience building and operating data or ML platform systems, ML / LLM evaluation systems, and PII redaction in production. Strong Python proficiency and understanding of how ML and LLM systems fail are essential.

Serves as the O-US business lead for the globally owned Customer Data Platform (CDP), ensuring O-US requirements are reflected in global roadmap and design discussions. Supports O-US business alignment by focusing on data management, audience definition, governance, and operational readiness. Ensures CDP capabilities are implemented effectively across O-US markets and data models and processes are aligned with enterprise standards. Represents O-US in CDP governance and working forums. Collaborates with Data & Analytics to align CDP data models, taxonomies, and governance standards. Coordinates across O-US markets to ensure readiness for releases and deployments. Monitors compliance with data privacy, regulatory, and data governance standards. Tracks value realization and provides visibility on adoption and impact. Facilitates continuous improvement through structured feedback to Global and IT partners.

Software Engineering Technical Specialist will develop solutions in areas such as Security, Systems, Databases, and Networking Solutions. Responsibilities include designing, developing, integrating, and delivering software, mentoring engineers, and identifying technical risks. Required expertise includes skills in one or more IoT areas such as programming, automation, hardware, networking, and data management. A Bachelor's or Master's degree in Computer Science, Information Security, or a related field is preferred.

IT Service Manager to lead a 20-person team supporting a client in airport support services for civil aviation. Responsibilities include leading application and infrastructure support, developing IT policies and procedures, collaborating with senior management, and managing relationships with IT service suppliers.

FrontDesk Master seeks a hands-on Commercial Lead to own growth across sales, marketing, customer success, and revenue. Manage a small sales and customer success team, oversee pipeline generation, and run marketing activities. Strong hotel tech and ideally hostel experience required.

Lead and grow the programmatic department, shaping the future of digital media for casino and sports betting brands. Own the programmatic strategy across display, video, DOOH, CTV, and emerging channels. Oversee full-funnel programmatic operations, including audience strategy, platform selection, and optimization.

Senior Graph Data Engineer to design, develop, and optimize data platforms using Azure Databricks. Responsibilities include building data pipelines, optimizing data transformations, and ensuring data quality and governance. Requires strong PySpark and SQL skills, experience with graph databases, and cloud-based data engineering principles.

Junior Accounts Receivable Specialist to support finance team in managing payments, customer accounts, and billing. Requires degree in accounting, finance, or related field, proficiency in Excel, and strong attention to detail.

Coordinates new B2B implementations, handles SAP configuration, and maps specification design. Supports existing and new solutions, consults business for new and existing solutions, and leads EDI-specific projects.

This Goods Not For Resale (GNFR) & Procurement Specialist role supports company operations by procuring goods and services, excluding resale products. Responsibilities include coordinating with internal departments, leading supplier negotiations, managing purchasing records, and ensuring compliance with policies. The ideal candidate has a degree in a related field, 3+ years of experience in purchasing, and strong communication and analytical skills.

Coordinates investigator payments, reviewing invoices, verifying accuracy, and ensuring compliance with agreements and policies. Works with clinical and finance teams to resolve payment issues. Maintains financial records and supports process improvements. Requires a bachelor's degree and 2+ years of experience in financial coordination or a related field.

Leads the pre-opening phase and ensures a successful hotel launch and ongoing operation. Responsible for the P&L of the hotel and oversees daily operations. Plans and supervises the activities of a diverse workforce to ensure the smooth and profitable running of the business. Operates the hotel in a manner that represents brand standards and exceeds guest expectations.

Senior Electrical Engineer to develop electromechanical solutions. Experience with electrical architectures, component selection, integration, and safety solutions. Must have knowledge of CE, UL, FCC, and IEC standards. Fluency in English required.

The Website Owner & Martech Manager is responsible for defining, managing, and improving the marketing technology stack. This role involves project management, collaborating with the Marketing Performance Manager, BI team, and other departments to ensure optimal performance and data reporting. The ideal candidate will have experience with marketing technologies, data analysis, and process improvement.

Senior Data Scientist specializing in Generative AI, recommendation engines, and predictive systems. Develops and deploys ML models, owns the full AI feature lifecycle, and ensures model integrity. Requires 5+ years of experience building and deploying ML models in production, expertise in LLM applications, and proficiency in Python and related data ecosystems.

Embedded Systems Research Engineer needed for a collaborative lab focused on cyberphysical systems and cybersecurity. Requires understanding of embedded systems, FPGA development (AMD Xilinx), C/C++, HDL (VHDL/System Verilog), and IP design flow. Bonus points for RISC-V architecture, CVA6, Cheshire, Carfield, OpenTitan, and experience with safety-critical and real-time systems.

Five9 seeks a Senior Technical Product Manager to evolve partner tooling capabilities for large enterprise CCaaS deployments. Responsibilities include owning the roadmap for partner implementation tools, defining partner-facing monitoring and health tooling, and writing technical documentation. The ideal candidate has 5+ years of experience in technical product management focused on developer tools, partner-facing APIs, or systems integrator enablement tooling.

Flagsmith seeks a Product Marketer to own product positioning and launches, from website to product. You'll define how Flagsmith is presented to technical buyers in high-stakes environments, ensuring clear and credible messaging. This role requires experience taking products to market, positioning complex technical products, and owning the marketing stack.

Experienced HVAC Technical Support Engineer needed for commercial equipment across Portugal and EU markets. Provides technical support, analyzes requests, develops documentation, conducts training, and manages warranty repairs. Requires 3+ years experience, strong HVAC knowledge, troubleshooting skills, and proficiency in MS Office. Languages: Portuguese and English.