freelance English-speaking jobs in Valongo

Sales Development Representative (DACH) will source new sales prospects, engage with leads, and qualify outbound inquiries. Responsibilities include researching business requirements, presenting solutions, and supporting the Account Executive team. Fluency in English and German is required.

Engineering Architect needed to define, review, and validate technical architecture across application teams. Ensure compliance with enterprise standards and best practices. Assess and manage technical risks. Lead Proof of Concepts and technical assessments. Promote modernization of engineering practices and DevSecOps toolchains. Strong experience in software architecture, cloud platforms, containerization, and DevSecOps. Experience delivering complex production-grade systems. Fluent English. Hybrid work model. Must be based in mainland Portugal.

Provide technical support for dental professionals using a digital orthodontic aligner system. Process and assess digital orthodontic cases, deliver support, and conduct demonstrations. Requires a dental background, digital orthodontic workflow knowledge, and experience with intra-oral scanners, CAD/CAM systems, and digital design software. Must be tech-savvy, organized, and fluent in Italian and English. Travel required.

Senior Data Platform Engineer will design and evolve Sword's streaming lakehouse, build and operate distributed streaming pipelines, and own durable workflows. Responsibilities include shaping the platform's API surface, driving vendor platform evaluations, and contributing to the self-service and agentic layer. Requires proven experience designing and operating data platforms at scale, hands-on experience with a modern lakehouse table format, and strong experience with a distributed processing engine. Familiarity with durable execution, production experience building and operating APIs, and understanding of Kafka and event-driven architectures are also needed.

Leads the global social media strategy for Dorel Juvenile brands, aligning with business objectives. Drives social media transformation into a strategic growth engine. Manages a social media team, develops strategy across brand moments and campaigns, and collaborates with executive leadership.

Provide Dutch-speaking customer support via phone, email, and chat. Troubleshoot issues and escalate complex cases. Maintain documentation standards and contribute to team success.

QA Automation Engineer will design, develop, and maintain automated test suites for mobile applications. Responsibilities include executing manual and automated tests, collaborating with development teams, and contributing to test management activities. Requires 2+ years of experience in software testing with a focus on automation, experience with mobile application testing, and proficiency in at least one programming language (Java, JavaScript, or Python).

Fullstack Developer to build a scalable customer data platform integrating data, automation, and AI. Experience with Vue.js, Python, Docker, and e-commerce integrations is required.

Business Development Intern to manage projects in the Dutch market, collaborate with operations teams, and analyze market trends. Fluent English required, Dutch is a plus. Must be available for at least 6 months starting June 2026.

Delivers value-add sourcing services to clients. Collaborates with internal and external stakeholders to manage market tenders, evaluate proposals, and negotiate contracts. Identifies savings opportunities and ensures adherence to client standards and processes.

The Insurance Manager designs, places, manages, and optimizes all insurance programs for the Avincis Group. Responsibilities include managing aviation, corporate, and people-related insurance, overseeing claims, and ensuring compliance with regulations.

Drive revenue growth and expand market presence as an Account Manager. Manage the sales cycle, build customer relationships, and promote Arrive's parking and mobility solutions.

Senior Backend Developer will design, build, and maintain scalable backend services. This role involves technical leadership, people management, and hands-on engineering contributions. Responsibilities include collaborating with product teams, improving existing systems, and promoting strong engineering practices. Must have 10+ years of experience writing production-grade code, 4+ years designing backend systems, and experience managing or mentoring engineers.

Senior Data Engineer to design and implement end-to-end Lakehouse architectures using Databricks and Delta Lake. Responsibilities include defining reference architectures, building ETL/ELT pipelines, ensuring data governance, quality, and security, and enabling analytics and consumption. Expert knowledge of Microsoft's BI stack, including Azure SQL Database/Azure Synapse, Azure Analysis Services, ADF, Databricks, and DevOps is required.

Shapes and drives product vision, roadmap, and backlog for enterprise software solutions. Collaborates with cross-functional teams to deliver high-impact features aligned with customer needs and strategic objectives.

Brand Manager to lead global communication, trade marketing, and innovation strategies. Develop and execute integrated campaigns, manage agencies, and track campaign performance. Lead the global end-to-end innovation pipeline, from concept development to market launch. Minimum 5 years of marketing experience with expertise in at least two of the following: innovation, brand communication, or trade marketing.

Team Lead for Transaction Processing and Reconciliation. Leads, motivates, and develops teams ensuring accurate and timely processing of trades and reconciliations. Supports NAV calculations and accounting integrity. Drives performance improvement and process automation. Collaborates with HQ team on projects and client service. Requires a Master's degree in a related field and 5+ years of experience in fund operations, middle office, or similar area. Fluent in English.

Summer internship focused on automating data comparisons between tracking sheets, reports, and platforms to improve reporting accuracy and efficiency.

Senior DevOps/Infrastructure Engineer to own complex initiatives end-to-end, drive collaboration, and set a high bar for infrastructure development and operation. Experience with HPC clusters, AWS, Terraform, and Kubernetes required.

Provide tax compliance and advisory work for clients in the asset management industry, focusing on international and state and local taxation. Work with Managers and Partners on key client issues, implementing tax strategies aligned with business objectives.