freelance English-speaking jobs in Guimarães

Quality Assistant to support Quality Management System implementation and monitoring, laboratory operations, and regulatory compliance. Requires a degree in a relevant field, experience in Quality Assurance/Control, and knowledge of GMP, GACP, and ISO standards.

Senior H&S Technician to prepare, implement, and update site safety plans. Requires 3+ years experience, CAP Occupational Health and Safety Technician (level VI), and knowledge of DL 273/2003. Must have expertise in office 365 tools and strong communication skills.

Senior Strategic Sourcing Specialist needed for packaging and pallet categories. Develop sourcing strategies, analyze data, lead sourcing events, and manage supplier relationships. Requires 3+ years of experience in strategic sourcing, packaging industry, or related field.

Operational Analyst to handle daily trade processing and ensure on-time settlement for equities and bonds. Collaborate with counterparties and custodians to resolve issues. Optimize and automate processes, document changes, and participate in stakeholder meetings. Requires 5+ years of financial industry operations experience and 3+ years in settlement back-office activities. Proficient English required.

Create and adapt visual assets for paid media campaigns across Meta, Google, Pinterest, and YouTube. Produce static and video assets, adapting existing brand content for different placements and funnel stages.

Technical Program Manager to own and drive execution across all teams. Manage sprint delivery, project visibility, and cross-functional initiatives. Requires 5+ years of experience in Technical Program Management, Delivery Management, or Project Management. Proven experience managing software and data-focused projects using Jira. Strong understanding of Agile and Scrum methodologies.

The R&D Analytical Technician will provide analytical support to drug product R&D projects, implementing and validating analytical methods, analyzing results, and ensuring proper data management.

Contract Manager to support project teams on contractual and legal aspects for EPC projects across all energies and geographies. Responsibilities include drafting contracts, negotiating terms, analyzing risks, and managing contract documentation. Requires a Master's degree or Degree in Law or Engineering and at least 5 years of experience as a Contract Manager.

System Monitoring Technician ensures continuous availability and performance of IT systems and infrastructure. Responds to alerts, identifies and resolves issues, and escalates critical incidents. Documents incidents, performs troubleshooting, and collaborates with IT teams.

Join the Veeam Quality Assurance team in Lisbon and work on Veeam products. Responsibilities include analyzing software requirements, manually testing products, and communicating with the product development process.

As an AI Product Owner, you will define product vision and roadmap, translate business needs into technical requirements, and ensure AI solutions deliver measurable value. You will collaborate with stakeholders and technical teams in an agile environment.

Senior Marketing Manager will develop and execute integrated B2B campaigns, manage product positioning and messaging, and create thought leadership content. Requires 5-8 years of B2B marketing experience, strong content creation skills, and the ability to translate complex topics into commercially impactful initiatives.

MailerLite seeks a Machine Learning Engineer to build and ship predictive models on behavioral data and fine-tune LLMs. Responsibilities include designing training and inference pipelines, collaborating with product and engineering teams, and ensuring reliable model outputs.

Develop, implement, and maintain machine learning models and algorithms. Integrate ML solutions into production systems. Collaborate with cross-functional teams to bring prototypes to life and support their transition into production. Monitor and optimize the performance of deployed AI models.

Global Key Account Management Intern will support a Key Account Manager in developing business and relationships with European retailers. Responsibilities include negotiating with clients, presenting product portfolios, and coordinating sales administration.

Manage accounting activities including general ledger, accounts payable, and receivable. Ensure accurate financial close processes and prepare financial statements. Support audits and monitor compliance with tax and regulatory requirements.

InnoWave seeks a Junior Backend Developer in Lisbon to develop and maintain backend services using C# and .NET. Collaborate with teams to deliver solutions, write clean code, and participate in code reviews.

Provides first-line IT support across studio locations, resolving hardware, software, and connectivity issues. Supports key third-party platforms and core business systems. Assists with domain management, website updates, and documentation.

The LQA Lead manages linguistic quality assurance for video game translations, ensuring accuracy, cultural relevance, and brand consistency. Responsibilities include coordinating with project managers and testers, managing resources, reviewing content quality, tracking issues, and providing feedback and training.

Leads the design and development of complex digital solutions in the CRM domain. Provides technical guidance and mentorship to junior engineers. Develops and maintains software architecture documentation. Participates in project planning and estimation activities. Acts as a subject matter expert for pitches and client work.