freelance English-speaking jobs in Valongo

QA Engineer needed to ensure quality, stability, and performance of a mobile application. Responsibilities include functional, regression, integration, UI, and API testing across various devices and OS versions. Requires 5+ years of experience in mobile application testing (iOS and/or Android) and strong understanding of mobile app architecture.

Manages client portfolios, ensures payment deadlines, handles customer complaints, obtains accounting information, and resolves issues. Requires fluency in Excel, SAP, English (B2), and finance knowledge.

Leads Mixed-Signal Design and Verification tasks for complex ICs utilizing leading edge technologies. Designs/verifies products including power management, signal management, and mixed signal functions. Provides training and mentorship to the MPS Mixed-Signal Design Team. Collaborates with Analog Design, Analog Layout, Digital Design Engineers, Digital Verification, and Digital Physical Engineers.

Systems and Network Engineer needed for administration, troubleshooting, and management of Cisco LAN/WLAN, network security components, and Cisco ISE. Requires advanced knowledge of TCP/IP, Ethernet, Wi-Fi, SD-WAN, VPN, Cisco ISE, DNA Center, and Active Directory components. Experience with network configuration management and automation tools is also required.

Electrical Engineer needed for construction projects. Manages electrical design, procurement, installation, and acceptance of power supply systems, security systems, and other electrical infrastructure. Requires 8+ years of experience in a similar role and proficiency in English.

Data Scientist to build, test, and maintain database pipelines, machine learning models, and decision-based systems. Develop algorithms to transform data into actionable information and use predictive modeling to improve credit risk.

Sodexo Business Services (SBS) Portugal seeks a Transition Expert with 5+ years of experience in multinational SSC environments. Responsibilities include defining roles and responsibilities for transition activities, applying the Sodexo transition project methodology, and organizing and driving transition activities. Strong project management, risk management, and communication skills are required. Fluent English is mandatory, French is advantageous.

Design, develop, and maintain data pipelines and ETL processes across Snowflake, dbt, and the Azure Data Stack. Build scalable data architectures to support analytics, reporting, and AI/ML workloads.

Operations & Guest Experience Manager needed for a growing hospitality project in Aljezur. Oversee daily operations, ensure quality guest experiences, and collaborate with owners and teams. Experience in small-scale hospitality, strong leadership, and fluency in Portuguese and English are required.

Provide premium customer service to high-end clients of a prestigious European brand. Handle inbound requests via phone, email, and chat in German and English. Organize travel arrangements, reservations, and advise on luxury experiences.

The Talent & Culture Manager executes, scales, and sustains VOQIN's people and culture frameworks across Europe and the Middle East. This role ensures consistent, legal, and effective people processes, tools, and experiences, supporting rapid growth while safeguarding culture, wellbeing, and compliance. The Talent & Culture Manager translates people strategies into operational reality, leveraging data and organizational insights to support decision-making and enable scalable growth. Responsibilities include talent acquisition, onboarding, performance management, culture development, people operations, compliance, wellbeing, and continuous improvement.

Validate and certify telecom solutions (voice, Wi-Fi, internet, SD-WAN) ensuring compliance with technical and functional requirements. Perform tests and analyses to guarantee network performance. Create and maintain documentation, including certification reports. Collaborate with cross-functional teams to align on requirements and certification standards. Assist in troubleshooting and resolving issues during validation and certification phases.

Experienced Enterprise Customer Success Manager to drive value, adoption, and retention for a strategic portfolio of enterprise customers.

Business Analyst/Application Contexter to analyze complex application and infrastructure environments, support migration planning, and contribute to cloud-centric architecture. Requires 5+ years IT experience, software development background (Web Development, eCommerce, Java, J2EE, .Net), and cloud platform certification (AWS, Azure, or Google Cloud).

Electra seeks a Head of Long-Term Rental to build and scale the business in Portugal. Responsibilities include strategy, growth, P&L management, and team leadership. Must have experience scaling a business line in mobility, rental, leasing, or a similar industry.

Designs, develops, and maintains automation solutions using RPA and AI tools to enhance business productivity. Collaborates with stakeholders to translate requirements into robust, scalable solutions.

Product Manager to plan and coordinate a large-scale digital platform deployment across EMEA. Manage platform backlog, multi-country deployments, and stakeholder relationships. Proven experience in large-scale digital programs, stakeholder management, and Agile/Scrum methodologies required.

Senior Creative Strategist leads strategy end-to-end for executive-level clients, defining vision, creative direction, and content frameworks. Collaborates with writers, designers, and stakeholders to ensure alignment and quality. 7+ years of experience in creative strategy, brand strategy, content strategy, or communications required.

Resolve escalated technical issues for healthcare professionals using our telemedicine platform. Bridge the gap between customer service and engineering, investigate root causes, and document solutions.

Provide functional support for users, build a knowledge base, and process requests for specific actions.