freelance English-speaking jobs in Valongo

German-speaking Customer Service Advisor needed to support airline customers via phone, email, and chat. Responsibilities include handling flight bookings, schedule changes, cancellations, and providing information on airline policies. Must be native German speaker with advanced English, excellent communication skills, and a customer service orientation.

Customer Service Executive provides a warm welcome to customers and guests, manages on-site tasks, and contributes to a positive work environment.

The Concierge, under the Head Concierge's supervision, defines, develops, and implements destination experiences for customers, providing personalized services and products.

Marketing & Growth Trainee for a 3-month program. Support marketing operations, campaigns, data analysis, social media, and content creation. Collaborate with teams, participate in strategy planning, and assist with events.

Junior QA Specialist will join the Engineering team to help deliver the product roadmap and enhance the platform. Responsibilities include testing new features, reviewing requirements, improving quality processes, and ensuring end-to-end quality.

Seeking fluent German speakers (C1/C2) with minimum B2 English for diverse roles across Europe. Must have legal right to work in EU. Roles include customer support, sales, marketing, technical support, and more.

Senior Software Engineer to lead frontend architecture, design system, and data-intensive views for an AI-driven revenue intelligence platform. Expert in TypeScript, React, Next.js, and data-heavy UI development required.

Braze Developer with 6+ years of experience required. Must have proficiency in platforms like mParticle, Braze, Salesforce Marketing Cloud, Tealium, and Segment. Strong understanding of APIs, webhooks, event-driven architecture, and SDK integrations is needed. Experience with AWS cloud infrastructure and DevOps/CI-CD practices is also required. Fluent English required.

Senior Product Manager to define and lead the long-term vision for Yuno's SDK Developer and Merchant Experience. Own the SDK platform logic layer, including APIs, versioning, performance, and observability. Drive the full product lifecycle for DX/MX initiatives. Minimum 5 years of experience in Product Management, owning platform, SDK, API, or developer-facing products in B2B SaaS environments. Strong understanding of SDKs, APIs, and distributed systems. Proven ability to reduce integration complexity and operational friction for developers and merchants. Excellent communication skills and strong product judgment. Fluent English.

Senior Application Security Engineer will design secure architectures, collaborate with teams on security controls, and ensure secure implementations in infrastructure and applications. Requires 3+ years of experience as an Application Security Engineer, experience with security scanning/tooling, CI/CD pipelines, and infrastructure-as-code. Strong understanding of supply chain security, secure software delivery, and Docker/mesh technologies is needed. Experience with Kubernetes, AWS, and security certifications is highly desirable.

Senior Mobile Engineer (React Native) to build and maintain production-ready mobile applications. 3+ years of experience in mobile development with strong React Native expertise required. Experience with mobile architectures, best practices, and software engineering fundamentals. Must be comfortable communicating with clients and working in agile workflows.

Site Manager to lead and motivate a car wash team, ensuring high service quality and operational efficiency. Manage daily operations, monitor performance metrics, and provide excellent customer service.

Talent Acquisition Specialist to manage the full recruitment cycle for scientific, technical, and corporate roles. Will source candidates, screen applications, coordinate interviews, and ensure a positive candidate experience. Requires 1.5-3 years of recruitment experience, strong sourcing skills, and fluency in English and Portuguese.

Provides customer support by investigating, troubleshooting, and resolving customer issues. Uses resources to ensure high standards and efficient work. Acts as a trusted advisor, listens to customer concerns, and tracks issues for resolution.

Back Office Agent needed for a leading gas company in Porto. Responsibilities include managing client and patient documentation, ensuring billing accuracy, and supporting the commercial team. Fluent German and English required.

Experienced Oracle JD Edwards ERP Consultant needed to support implementation, configuration, and maintenance of EnterpriseOne solutions. Analyze business requirements, configure modules, and collaborate with teams to deliver effective ERP solutions.

Senior Data Engineer to build and maintain cloud-based data pipelines on AWS. Experience with AWS services (S3, Lambda, ECS, RDS, CloudWatch), SQL, Python, and data architecture is required.

Provide on-site IT support in a large-scale end-user environment. Work by procedures and tickets. Must have hardware and software knowledge, networking and security understanding, and problem-solving skills. Microsoft proficiency and comfort with collaborative tools are required. Good English skills are necessary.

Develop and execute sales strategies for EV charging infrastructure solutions. Identify and prospect new clients, prepare proposals, negotiate contracts, and collaborate with technical teams.

System Administrator will participate in defining technical solutions, promoting existing products and services, and ensuring compliance with architecture, security, and delivery time requirements. Responsibilities include supporting development teams, implementing technical user stories, and ensuring the provision of production and infrastructure resources. Requires mastery of new technological stacks (Elastic Search, Grafana, Dynatrace), IT infrastructure experience, and knowledge of Linux and Windows systems, Docker, Kubernetes, and Helm. Fluent English required.