freelance English-speaking jobs in Viana do Castelo

Mid-level Full-Stack Web Developer needed to build B2B e-commerce solutions. Requires 3+ years experience with backend languages (C, C++, C#, Java), modern frameworks, and strong skills in test automation, CI/CD, and container platforms.

Experienced Business Analyst for Salesforce projects is sought. Responsibilities include owning Salesforce development initiatives, leading developers, and delivering scalable solutions. Requires BA experience in Salesforce, knowledge of Commercial Order Management/OmniStudio, and functional documentation skills.

Staff Machine Learning Engineer to define state-of-the-art ML in road logistics. Apply data science to optimize pricing, load matching, and network design. Requires 4+ years deploying production data pipelines and 2+ years with MLOps.

Marketing Operations Manager to manage the execution and measurement for Darkroom and Shadow. Responsibilities include publishing across social channels, managing launches, community engagement, and maintaining HubSpot hygiene and reporting.

The role involves editing and producing content across short-form and long-form video for platforms like Instagram, YouTube, and TikTok. You will build a high-output content engine, repurposing raw footage and optimizing edits based on performance data.

Lead last mile and reverse logistics performance across the Southern Cluster, managing delivery and reverse logistics partners. Requires 3+ years in e-commerce or FMCG supply chain roles with strong analytical skills.

Shape digital recruitment strategy across three regions by translating hiring priorities into measurable campaign plans. Guide paid social, search, and digital channels, owning global performance reporting. Requires fluency in Portuguese and English.

Experienced Python Developer needed for a remote freelance project building an AI document analysis platform. Requires expertise in LLMs, RAG, AI agents, and document processing pipelines.

Dynamic Outbound Sales Representative to guide car sellers through the Carwow auction process. Manage lead pipelines, review listings, provide expert advice, and handle negotiations via phone, email, and chat.

French and English-speaking Customer Service Representatives are needed to support a leading car rental brand. Responsibilities include delivering personalized care via phone and email, handling post-rental resolutions, and highlighting optional services.

Manage and optimize partner relationships to drive sales through influencer marketing. Responsibilities include recruiting, negotiating contracts, and analyzing performance data to maximize ROI. Requires organization and hands-on approach.

Hitachi Rail Portugal seeks a Project Manager to lead railway signaling and control projects. Responsibilities include project execution, monitoring, delivery, and closure. Requires core project management knowledge and 5+ years of experience.

Production Trainee/Intern role assisting with production quality management, including delivering alerts, defining containment measures, and performing quality audits. Requires a recent graduate in engineering or management with good English skills.

Principal MLOps Architect to drive enterprise-scale AI system design and operationalization. Lead end-to-end AI initiatives, focusing on Generative AI, LLMs, and scalable cloud-native architectures. Requires 10+ years in AI/ML and distributed systems.

Freelance English into Simplified Chinese (Singapore) Translator needed for Legal and Insurance documents. Requires excellent bilingual skills, attention to detail, and specialized subject matter expertise.

Lead complex telecommunications projects, managing planning, coordination, and delivery across Design, Integration, Validation, and Acceptance. Requires experience in Telecom software development, integration, and knowledge of Cloud/Virtualized Network technologies.

Support ocean governance and blue economy projects by providing research, analysis, and coordination. Track international policy developments and engage diverse stakeholders. Requires relevant degree and experience in R&I projects.

Freelance Medical Customer Service Representative needed to manage clinical trial sites and ensure patient recruitment. Requires native Portuguese and English, with experience as a Nurse, CRA, or in the medical field. Focus is on patient screening and support.

Lead the Traffic (User Acquisition) team, managing PPC and Affiliate channels. This player-coach role involves scaling acquisition, optimizing unit economics, and maintaining data integrity across platforms.

SQL Developer needed to develop, maintain, and optimize advanced SQL queries, Stored Procedures, and functions for SQL Server. Requires 3+ years of experience, strong SQL knowledge, and experience in performance tuning.