freelance English-speaking jobs in Valongo

Provide French-speaking customer support via phone, email, and chat. Assist customers with inquiries and solutions, ensuring high satisfaction. Collaborate with internal teams for case resolution.

Senior Data Scientist to develop and deploy advanced analytical models and machine learning solutions. Translate business problems into data science use cases and actionable insights. Collaborate with data engineering and product teams to operationalize models.

Provide customer support via phone, email, chat, and social media in Dutch and English. Assist with account setup, billing, technical issues, and identity verification. Troubleshoot problems and document customer cases.

Lead product initiatives end-to-end, focusing on making complex operational systems usable and efficient for users. Shape product initiatives from problem framing to solution definition, ensuring what gets built is relevant, impactful, and clear.

Senior Accountant to manage financial and accounting activities, ensuring compliance and efficiency. Responsibilities include month-end and year-end close, accounts payable/receivable, payroll, statutory filings, and ERP system ownership.

Develop and implement forecasting models for energy markets and renewable production assets. Design communication models between energy production systems and operational platforms. Collaborate with engineering and digital teams to translate business needs into technical solutions.

Senior Data Scientist will develop and optimize data analytics models and tools, ensuring scalability and code optimization. Responsibilities include running Python-based analytical engines and mentoring junior team members.

Data Scientist needed for a team focused on growth. Experience in exploratory data analysis, hypothesis testing, and predictive modeling required. Strong Python and Cloud environment skills are essential.

TUI Musement seeks digital-savvy individuals in Madeira to provide service support. The role involves creating memorable guest experiences, offering tailored recommendations, and resolving issues effectively. Must be fluent in English, possess a driving license, and own a car.

Senior React Native Engineer to design, develop, and enhance educational mobile apps for Android and iOS. Collaborate with cross-functional teams to deliver high-quality solutions. Mentor other engineers and contribute to a positive tech culture. Requires 5+ years of React Native experience, unit testing, backend API knowledge, and CI/CD pipelines.

Senior Databricks Engineer to support AI application development and maintain the Databricks Lakehouse platform. Responsibilities include designing, building, and optimizing data pipelines, ensuring security and governance, and collaborating with cross-functional teams. Requires 5+ years of data engineering experience, 3+ years with Azure Databricks, strong Python and SQL skills, and experience with Databricks workspace security.

Own and drive features within TeamViewer Frontline, from ideation to delivery. Collaborate with stakeholders across Product, Engineering, UX, Marketing, Sales, and Support to build a product roadmap. Translate customer feedback into requirements and KPIs. Minimum 4 years as a Product Owner in a software environment required. Technical fluency and agile mindset essential.

We are seeking Greek-speaking professionals for two onsite roles in Lisbon, Portugal. Both roles include accommodation. Role 1: Customer Service Representative (Greek + English) requires strong understanding of e-commerce and excellent communication skills. Role 2: Content Moderator (Greek + English) requires strong moderation and decision-making skills and knowledge of e-commerce environments.

Provide Italian and English customer support via phone, email, and chat. Resolve customer inquiries, manage orders, and promote products.

Consultant to contribute to study design, methodology development, and analysis of real-world data for pharmaceutical and healthcare clients. Requires 2+ years of clinical research experience and a PhD/Masters/MBA in a relevant health sciences field.

Senior Application Support / DevOps professional needed for a hybrid working model in Porto. Minimum 6 years of experience in IT infrastructure, application support, or similar roles. Strong Linux and Windows environments knowledge required. Experience with job schedulers, scripting, databases, monitoring tools, and networking fundamentals is essential. Responsibilities include production support, monitoring applications, coordinating changes, collaborating with development teams, and contributing to automation and continuous improvement.

Supports the operational execution of the Data Privacy Programme, focusing on OneTrust platform implementation, privacy documentation, and first-level privacy risk assessments.

The Senior Operations Manager is responsible for coaching and supervising Operations Managers and Team Leaders. This role involves building and maintaining client relationships, meeting service level agreements, and achieving financial expectations. The Senior Operations Manager analyzes and maintains Client Service Level Agreements, ensures operational compliance with contracts, and oversees client relationships.

Welcome and assist demanding customers, providing personalized advice and contributing to brand development. Ensure smooth store operations, organize products, and increase revenue.

FLUPOL seeks a Sales Engineer to identify business opportunities, build client relationships, and deliver technical support. Responsibilities include understanding customer needs, preparing proposals, and collaborating with internal teams.