freelance English-speaking jobs in Valongo

As a Collections Specialist, you will support the Collections Manager in monitoring third party collections performance, analyzing customer accounts, and resolving disputes. You will provide data and insights to support risk assessment and build relationships with stakeholders across Finance and the wider business.

This international sales career program is for ambitious professionals with 1-5 years of sales experience seeking to develop high-value business opportunities across finance, legal, and tech markets. Relocation to Malta is required.

The MDM Analyst will manage financial, customer, supplier, and vendor master data. Responsibilities include data creation, maintenance, and ensuring data accuracy and integrity. The role requires collaboration with finance and non-finance teams, process owners, and IT.

Senior Creative Designer needed for a growing agency. Develop brand identities, marketing creatives, motion graphics, and pre-production concepts. 5+ years of experience and a strong portfolio required. Mastery of Adobe Creative Suite and Figma essential.

Market Research Fieldwork Manager will oversee end-to-end projects, managing client relationships, budgets, and fieldwork teams across multiple countries and methodologies.

Drive product initiatives for the Requirements Portal, a key part of Altium's engineering platform. Translate product strategy into execution, define priorities, and manage risks. Collaborate with engineering, design, and customers to deliver solutions that improve team workflows and product development.

Portugal Sales Manager needed for international solar power electronics innovator. Manage all sales and business development activities in Portugal. Requires 3+ years of solar PV sales experience in the Portuguese market and proven track record of increasing market share. Must be fluent in English and Portuguese.

Operating Principal to drive growth and lead teams in a fast-paced environment. Responsibilities include developing innovative products, inspiring teams, and executing strategy. Must be highly ambitious, proactive, and possess strong communication and organizational skills. Full Portuguese proficiency and work permit required.

Experienced WFM Consultant needed for software implementation projects. Must have demonstrable experience in WFM and/or ERP solutions, SQL knowledge, and Windows system familiarity. Fluency in English is required.

CadenzaLux seeks a highly organized Property Management Administrative Coordinator to support the Property Management department. This role involves scheduling, documentation, owner reporting, maintenance coordination, and database management.

Performance Marketer to manage Meta Ads campaigns for real estate and B2C brands. Requires 2-4 years of experience with lead generation, funnel analysis, and Meta Business Manager. Fluent English and Russian or Ukrainian required.

Sales Manager to lead business development strategy for three Portuguese properties. Responsibilities include acquiring new corporate accounts, travel agencies, and group business, analyzing market trends, and representing the company at industry events.

Systems Engineer needed to analyze customer needs, develop system requirements, and troubleshoot hardware, software, and system problems. Requires a degree in Electronic, Communications, or Telecommunications Engineering and experience in design documentation. Senior roles require network certifications and experience with virtual and hyperconverged infrastructure.

Fluent Spanish (C1) and B2 English speakers needed for a 6-month minimum Customer Service contract with a major European airline in Lisbon.

Project Manager to plan, coordinate, and manage energy projects (power plants, transmission & distribution, industrial energy solutions). Requires 5+ years experience in project management, team leadership, scheduling, and cost control. Must have a Bachelor's or Master's degree in Electrical Engineering and advanced proficiency in English.

Key Account Manager to identify and develop new market opportunities, build customer relationships, and collaborate with internal teams to ensure successful product application.

Intern to join the Sequencing Team within the Molecular Biology Unit. Perform DNA sequencing activities using established molecular biology and sequencing methodologies. Analyze sequencing data, perform quality assessments, and support accurate data interpretation.

The Fundraising Manager will execute fundraising initiatives, focusing on scholarships, individual giving, and campaigns. This role supports the 2026–2028 Fundraising Plan, manages a commercial fundraising pipeline, and leads the Fundraising Communication Plan. The successful candidate will build relationships with donors, coordinate cross-functional teams, and promote a culture of giving.

Financial Controller for Holdings will oversee monthly closings, reporting, and variance analysis. Provide financial insights and support project budgeting, financial tracking, and delivery performance. Manage recharge models and cost allocation.

DataHow AG seeks a motivated Bachelor's or Master's student in Data Science, Computer Science, Bioengineering, or a related field for a paid summer internship in Lisbon. The 6-12 week full-time role involves working on real industry problems, supporting team members, and contributing to the development of machine learning applications.