freelance English-speaking jobs in Barreiro

Informatic Engineering Intern to support development, maintenance, and optimization of IT systems and digital infrastructure. Will provide technical support, contribute to software development, and participate in cybersecurity and process automation projects. Requires a degree in Informatics Engineering or related field and eligibility for an IEFP internship.

Lead the design, development, and delivery of high-quality Android applications. Act as a technical authority, mentor engineers, and collaborate with cross-functional teams.

Experienced Data Center Technician needed for on-site work in Lisbon, Portugal. Perform hardware installations, cabling, server racking, and troubleshooting. Must have 2+ years of data center experience, strong cabling skills, and ability to lift 50+ lbs.

The Field Engineer will manage the integration of buildings into the Bandora platform, configuring HVAC systems and BMS, implementing communication protocols, and troubleshooting integration issues.

Provide French-speaking customer support via phone, email, and chat. Assist with telecom service and product inquiries, resolve issues, and maintain customer records. Must be fluent in French and have strong communication and problem-solving skills.

Trade Marketing Specialist to activate sales & marketing strategies for ICB products in Portugal. Support retail partners in improving user experience and coordinate events. Fluent Portuguese, English, and Spanish required.

Support businesses in managing and optimizing their online advertising campaigns. Assist clients with Google Ads products and advertising strategies. Provide recommendations to improve campaign performance. Maintain strong relationships with business clients.

Senior ServiceNow IT Consultant to enhance and optimize ITSM processes, support ITOM expansion, and contribute to the rollout of Strategic Portfolio Management (SPM).

C#/C++ Developer with 4-5 years of experience in backend development and Windows applications. Strong English skills required for international projects. Hybrid work model in Vila do Conde. Experience with firmware or embedded systems is a plus.

IT Senior Architect Specialist required to monitor and maintain server and storage hardware, ensure infrastructure availability, and implement new solutions. Minimum 10 years experience in similar roles with expertise in ITIL, Microsoft SQL Server, Veeam, VMware, Kubernetes, and Linux systems.

Junior Dotnet Developer with 2 years of experience in C# and .NET development. Good knowledge of .NET Framework and .NET Core required. English is a plus.

Project Management Officer needed to elevate project delivery and governance for a leading international banking group. Responsibilities include building project frameworks, managing tracking and reporting, providing project support, and leading capacity planning. Requires 3+ years of project management or consulting experience, a Master's degree, and fluency in English.

Leads the global go-to-market launch of Unit4's AI-native architecture, a company-wide 18-month initiative. Owns the GTM strategy and execution, translating complex innovation into clear economic value stories. Builds and leads a product marketing function that endures beyond individual launches. Shapes market perception through analyst relations and ensures demonstrations deepen the product narrative.

Senior Full-Stack Software Engineer will design, develop, and maintain features for live video, chat, events, and notification systems. Responsibilities include collaborating with product, design, and engineering teams to deliver impactful features and improve system performance and reliability. Requires 5+ years of experience as a full-stack engineer with strong Ruby on Rails and React experience.

Catawiki seeks a Senior Product Manager – AI Support Experience to improve the company's AI-powered customer support system. The role involves reducing manual contact volume, improving AI answer quality, expanding AI coverage, and ensuring a smooth user experience. The ideal candidate has experience with LLM concepts, agentic workflows, and deploying AI products.

Client Success Manager will support a portfolio of accounts by building strong client relationships, keeping workstreams organized, and helping drive performance through clear communication, consistent execution, and thoughtful recommendations.

Experienced Proxy Product Owner to accelerate data lake product build phase. Responsibilities include backlog enrichment, UAT testing, data analysis, and KPI optimization. Requires expertise in Azure Data Factory, Snowflake, Power BI, SQL, and Agile methodologies.

Collaborate with Data Scientists to productionize models in a Databricks environment. Design, build, and maintain scalable data and ML pipelines. Deploy and monitor models using Azure Machine Learning.

Frontend Product Engineer will build user interfaces for an AI-native law firm. Responsibilities include designing agent interaction surfaces, document review workflows, and scalable UI patterns in Next.js + TypeScript. Strong experience with Next.js, TypeScript, and state management is required.

Junior Cybersecurity Analyst needed for a leading financial organization in Lisbon. Conduct risk assessments, support security assessments, and manage IT control plans.