freelance English-speaking jobs in Barreiro

Full-Stack Mobile Engineer will design, build, and ship iOS and Android features using Swift/SwiftUI, Kotlin/Jetpack Compose, and cross-platform frameworks. Responsibilities include integrating APIs, managing offline modes, and implementing robust testing. Experience with mobile architecture patterns, CI/CD, and analytics is required.

Experienced lawyer with 2-4 years of Labor Law experience sought for Lisbon office. Must possess a Portuguese Bar Association license, strong English skills, and proficiency in MS Office and internet applications.

Customer Support Specialists provide first-line support to Irish customers via chat, phone, and email. Handle inquiries, manage complex cases, and support fraud detection. Must have C1/C2 English, 12+ months customer service experience, and strong communication and problem-solving skills.

Backend Developer to design, develop, and deliver scalable software solutions using .NET, Azure, and microservices architectures. Requires 4+ years of experience, proficiency in C#, .NET Core, and knowledge of Agile methodologies.

Provides fast and accurate customer support to hoteliers via various channels. Resolves queries, escalates issues, and ensures customer satisfaction. Manages productivity, adherence to schedules, and follows RoomRaccoon Standard Operating Procedures. Communicates effectively in Dutch and English.

Innovation Management professional to support the operation and continuous improvement of the organization's Innovation Management System. Will contribute to the preparation and implementation of Research and Innovation projects. Requires experience with R&D and Innovation funding programs and Innovation Management Systems methodologies.

Senior Python Backend Developer to join the Machine Learning Team. Develop and maintain production applications, optimize performance and scalability of ML services in cloud environments. Proficiency in Python and the Python data stack, AWS Cloud experience, and strong understanding of software engineering principles are required.

Delivers software projects by planning, managing resources, and removing impediments for engineering squads. Implements and maintains agile processes, tracks progress, and coordinates with stakeholders. Requires 1-2 years of experience in project management, scrum master, or engineering team roles.

CTO & Co-Founder will own ZAAI's technology stack, AI platform, and technical vision. Responsibilities include architecting, building, and evolving the core AI platform, designing backend systems, and leading the engineering team.

Graphic Designer (Social Media) creates eye-catching visuals for social media, digital campaigns, and marketing materials. Develops creative assets, follows brand guidelines, and collaborates with teams. Requires 5+ years of experience, a strong portfolio, and proficiency in Adobe Creative Suite.

Leads and motivates an inside sales team to achieve sales targets. Develops and implements sales strategies and processes. Monitors sales performance, manages the sales pipeline, and collaborates with marketing and product teams.

Provides fast and accurate customer support to hoteliers via various channels. Resolves queries, escalates issues, and ensures customer satisfaction. Manages productivity, adherence to schedules, and follows RoomRaccoon Standard Operating Procedures. Communicates effectively in Dutch and English, both verbally and in writing.

Regional Sales & Operations Wellness Manager drives commercial performance, guest experience, and strategic development for Serenity – The Art of Wellbeing and Active by Serenity across four United Hospitality Management properties. Oversees wellness operations, sales, and marketing to achieve revenue targets and enhance guest satisfaction. Collaborates with cross-functional teams to ensure consistent delivery of luxury service standards.

Leads and manages global compensation frameworks, policies, and processes across Europe, the Americas, and APAC. Partners with HRBPs and leaders to advise on pay decisions, promotions, and internal equity. Oversees global and local benefits programs.

Provide customer support via phone, email, and/or chat in Dutch and English. Assist users with technical issues, account access, and platform functionality. Support inquiries related to search engine tools, settings, and performance. Troubleshoot and resolve technical problems following established procedures.

Lead adversarial security reviews of AI-enabled systems, APIs, and automation platforms. Design, assess, and challenge security architectures for AI agents, automation workflows, and identity flows. Develop automated Red Team tooling to test security assumptions and translate findings into actionable design improvements.

Aubay Portugal seeks a NiFi Data Engineer with experience in implementation, flow management patterns, and data flow orchestration. Requires strong XML and XPath knowledge, data transformation skills, and interest in NiFi technology.

Account to Report Specialist performs balance sheet reconciliations, processes journal entries, and handles month-end close activities. Requires experience in the role, a finance-related degree, and fluency in English.

Senior Data Engineer to design, develop, and maintain scalable data pipelines. Implement data integration processes using NiFi, Airflow, Apache Kafka, and Universal Messaging. Ensure data quality, integrity, and security. Collaborate with BI specialists, data scientists, and cloud engineers.

Senior Application Security Engineer will design secure architectures, collaborate with teams, and implement security controls. Experience with CI/CD pipelines, infrastructure-as-code, and securing microservices is required.