freelance English-speaking jobs in Valongo

Internship providing practical experience in hospitality front desk operations and guest relations. Develop skills in communication, customer service, and problem-solving. Assist with guest check-in/out, manage reservations, and handle guest inquiries. Support housekeeping, F&B, and common area maintenance.

Senior User Acquisition Manager to launch, optimize, and analyze web advertising campaigns. Requires 3-5 years of experience in Meta UA, proficiency in Excel/Google Sheets, and strong analytical skills. Experience with automation and AI tools is a plus. Fluent in English (B2 or higher) and Russian (C1+).

Drive end-to-end technical delivery and execute high-quality SAP development across strategic projects and change management initiatives. Provide expert-level guidance on system architecture, code quality, and effort estimation. Lead Quality Gate activities and govern external vendors to enforce adherence to coding guidelines and technical standards.

The HR Specialist provides end-to-end HR support for employees and managers in the Portugal office. This role ensures compliance with Portuguese labor law, manages HR administration, supports managers, and drives engagement initiatives. Responsibilities include recruitment, onboarding/offboarding, payroll coordination, performance management, and learning & development.

DevSecOps Platform Engineer will design, maintain, and troubleshoot distributed systems. Manage security issues related to the platform, CI/CD pipelines, and development tools. Develop and maintain tools to support the development environment on MacOS and Linux.

Lead R&D in GenAI and Agentic AI, designing and prototyping solutions for financial crime detection. Drive production excellence by partnering with Engineering and Product leadership to integrate AI components into core product features. Establish evaluation frameworks for LLM and agentic AI systems. Conduct advanced exploratory analysis to uncover insights for product development. Mentor junior data scientists.

Designs, implements, and maintains secure network infrastructures. Monitors, detects, and responds to security incidents and vulnerabilities. Configures, manages, and optimizes network security solutions. Performs security assessments, vulnerability analysis, and remediation actions.

Senior Java Software Engineer to build high-impact features and contribute to architecture design for B2C and B2B2C products. Requires 4+ years of Java development experience, REST API proficiency, and familiarity with testing, CI/CD, and cloud services.

Leads and scales the silicon logical design organization, translating specifications into RTL implementations and overseeing end-to-end design execution.

Business Controller needed for new production plant in Viana, Portugal. Evaluates, updates, and manages cost management systems. Collaborates with Product Line Manager to achieve financial targets and participate in cost reduction programs. Ensures accurate and timely financial data for management decision-making. Provides business trend analysis and supports inventory valuation. Acts as a liaison between finance, logistics, commercial, and IT departments. Requires a degree in Accounting, Economics, Management, or related field, knowledge of accounting principles, costing, and budgeting, and experience in a similar role for over two years. Fluency in English and Portuguese is required.

The Project Manager plans, coordinates, and delivers cross-functional initiatives across product, engineering, operations, and external partners. The role ensures projects are executed with strong governance, predictable timelines, controlled scope, and clear stakeholder visibility.

Distribution Analyst will specify business requirements, perform acceptance testing, and monitor energy data validation and provisioning processes.

Senior HTML/Markup Developer will contribute to the creation and customization of new iGaming brand websites. Responsibilities include translating design specifications into responsive layouts, collaborating with designers and developers, and ensuring code quality. Requires 5+ years of experience as an HTML/Markup Developer with strong knowledge of HTML, CSS, and UI/UX design principles.

This Sales & Go to Market Engineer role combines technical expertise with market execution to support API adoption. Responsibilities include conducting demos, POCs, and providing technical guidance during the sales cycle. The role also involves supporting GTM initiatives, building demo environments, and creating technical collateral.

Content Moderators needed for e-commerce platform in Lisbon. Must be fluent in German and English, with strong decision-making and communication skills.

Senior Sales Engineer to drive sales of software solutions to the telecommunications market. Requires 5+ years of experience, proven sales success, and fluency in English. German proficiency is a plus.

Define and deliver enterprise AI strategy across data ecosystems and platforms. Identify high-value AI use cases, architect intelligent agents, and guide teams through adoption and scaling. Develop organizational policies, standards, and guidelines for AI solution configuration design, deployment, and maintenance. Lead the development of AI architectures for complex solutions ensuring consistency with agreed requirements.

Intern to support network planning activities for Flix in Europe West. Tasks include data entry, analysis, report preparation, and supporting team initiatives. Requires strong Excel skills, analytical abilities, and fluency in English.

Staff Backend Engineer specializing in AI-native development. Designs and maintains agent-ready systems, including context pipelines and task specifications. Strong experience in Golang, Java/Kotlin, and scalable distributed systems. Drives technical direction and mentors engineers.

Designs, develops, and deploys applications utilizing LLMs like OpenAI GPT. Provides technical guidance to junior developers and collaborates with stakeholders to ensure alignment between technical capabilities and business objectives.