freelance English-speaking jobs in Castelo Branco

Provide customer service in French and English, resolving inquiries and managing requests. Must have fluent French (C2) and good English (B2), customer service experience is preferred.

Build production ML and LLM systems to improve Hostelworld discovery, relevance, and efficiency. Translate traveler, hostel, and business problems into ML/LLM solutions across search, ranking, destination discovery, property Q&A, social matching, and content understanding. Design, build, and operate MCP servers and agent-facing APIs. Improve Hostelworld-specific accuracy through benchmarks, error analysis, prompt/version control, fine-tuning, synthetic data, and model selection. Evaluate and adapt open-source or commercial models. Own productionization end-to-end: data pipelines, embeddings/features, model serving, APIs, monitoring, alerting, documentation, and support.

Talent Acquisition Manager will lead recruitment for Vroomly, managing a team and overseeing the end-to-end hiring cycle in France and Spain. Responsibilities include developing and optimizing the hiring process, managing employer brand strategy, and planning recruitment for European expansion.

Senior Research Analyst will develop research products, leverage research assets, and generate insights based on primary and secondary research. Requires experience in executing both quantitative and qualitative research, analyzing large datasets, and presenting findings.

Process Quality Engineer to lead issue resolution using 8D methodology, analyze quality data, and collaborate with cross-functional teams. Develop action plans to prevent recurrence of issues and promote continuous improvement. Minimum 3 years of experience in quality roles with 8D methodology expertise. Bachelor's degree in Engineering (Industrial, Mechanical, Electrical, or related field).

Manage and optimize cloud infrastructure across AWS and Azure environments. Responsibilities include migrating applications, monitoring performance and costs, and providing technical support. Requires strong understanding of cloud concepts, Azure services, and IaC tools.

English-speaking Sales Development Representatives / Account Managers will support businesses in building and optimizing their online advertising strategies. Responsibilities include identifying new business opportunities, managing client relationships, and driving campaign performance.

Cocoa Analyst will collect and monitor traceability data, ensuring accuracy and alignment with sustainability KPIs. Responsibilities include data collection, supplier training, and reconciliation with spend data. The role requires project management experience, data management skills, and fluency in English.

As a Receptionist, you will manage guest check-in and check-out, handle room allocation, and provide exceptional customer service. You will also be responsible for handling guest requests, promoting hotel services and amenities, and ensuring guest satisfaction.

As Bounce's Organic Growth Intern, you will own a substantial part of how people discover Bounce through search engines and AI answer engines. You will build Bounce's presence through off-page citations, identify keyword opportunities, and own the full loop on content improvements.

Learn the skills of roofing as a Roofer Apprentice. Assist experienced roofers with tasks like material preparation, measurement, cutting, and installation. Must be reliable, physically fit, and able to work at heights.

Data Analyst will research and investigate online fraud trends, leverage analytical skills to provide insights to merchants, and collaborate with teams to optimize processes.

Review Russian digital content for compliance with client policies. Moderate and escalate policy violations. Maintain high quality in each review.

Landskill seeks a BI Developer with experience in Power BI, SSAS/SSIS/SSRS, Oracle databases, data modeling, and data warehousing. Fluency in English is required.

Business Analyst with 6+ years of experience in LMS or HRIS platforms. Experience with system administration, user support, and software implementation. Knowledge of API integrations, SFTP, SSO, SQL, and testing. Strong communication and stakeholder management skills required. Fluent in French (B2 or higher). Residency in Portugal or valid work authorization.

Quality Engineer will apply quality methods, conduct audits, and track project maturity levels. Requires a degree in mechanical, electrical, or industrial engineering and 5+ years of quality management experience.

Provide Dutch-speaking roadside assistance to drivers experiencing vehicle breakdowns or emergencies. Coordinate towing, mechanics, or alternative transport. Log case details accurately and provide clear instructions to customers.

The Global Performance & Value Manager will design, build, and own global category performance dashboards. This role will define pricing corridors, maintain a pricing elasticity model, and track promotional effectiveness. The ideal candidate will have experience in pricing frameworks, competitive intelligence, and data analysis.

Own and drive end-to-end architecture across the Secure Net ecosystem, including backend platforms, microservices, and third-party security solutions. Define solution designs covering system interactions, APIs, data flows, and integrations. Provide hands-on technical leadership, guidance, and documentation to engineering teams and suppliers. Translate product requirements into scalable, robust, and delivery-ready technical solutions. Ensure seamless integration between backend systems, network components, and external partners. Act as the primary technical authority across product, engineering, delivery, and partner organizations.

Lead technical and business discovery for customers, architect AI-driven CX & ES solutions, and drive technical strategy through the sales cycle.