freelance English-speaking jobs in Maia

Trade Support Officer needed for a Portuguese tech company. Bachelor's degree in a relevant field and up to 2 years of experience required. Responsibilities include monitoring OTC derivative fixing, updating market rates, and collaborating with teams on rate creation and discrepancy investigation. Fluent English required.

Electrical Design Engineer needed for small to medium-sized projects. Designs electrical components and systems, ensuring compliance with standards. Develops schematics, calculations, and drawings using AutoCAD, Revit, and other tools. Collaborates with teams and clients. Bachelor's degree in Electrical Engineering required, Master's preferred. 3-6 years of experience.

IT Linux System Specialist needed for OESL Data Center team. Design, optimize, and manage Linux systems and datacenter infrastructure. Ensure alignment with OESL standards and operational requirements.

Full-Stack Engineer to design, build, and maintain applications using Django and Vue.js. Collaborate with stakeholders, work with data pipelines, and deploy applications on AWS infrastructure.

Defines and maintains domain entities, builds semantic datasets, and models relationships and hierarchies. Designs patterns for linking documents to structured entities and collaborates with teams to align data with system behavior.

QA Analyst to ensure quality, reliability, and performance of digital products. Responsibilities include designing and executing test cases, identifying and tracking bugs, and collaborating with development teams. Requires a Bachelor's degree and 3+ years of experience as a QA Analyst. Experience in Agile/Scrum environments and iGaming is a plus.

Senior .Net Developer to write, design, and maintain C# code using the .NET Core framework. Experience with RESTful APIs, microservices architecture, and Azure is required.

Mobile Developer with 3+ years of experience building scalable and user-friendly applications using React Native and Expo. Experience developing, testing, and deploying cross-platform apps for iOS and Android is required.

Attune seeks a hands-on AI Researcher to design and implement the core intelligence architecture of its AI-powered coaching product. Responsibilities include translating behavioral theory into computational models, improving longitudinal signal tracking, and building evaluation frameworks for AI reliability. The ideal candidate has experience in applied AI, NLP, and ML systems, with a bias towards building and shipping.

Experienced Agile Delivery Manager needed for a 12-month contract. Lead and coach Agile teams, facilitate ceremonies, manage dependencies, and improve processes.

Administrative Assistant to manage office operations, visitor reception, document control, and provide support to employees.

Full-stack Engineer to build scalable, user-friendly applications leveraging an AI platform. Develop frontend applications using React, Typescript, and Next.js (v14), integrating with Python and PostgreSQL backend systems. Collaborate with product and design teams to implement new features and optimize performance.

Site Reliability Engineer to design, implement, and maintain secure, scalable cloud environments on AWS and Azure. Manage multi-cloud deployments, implement security measures, and build IaC frameworks using Terraform. Collaborate with DevOps, development, and data science teams to ensure seamless CI/CD pipeline integration and enable automated pipelines for AI/ML model training and deployment.

Review, classify, and assess user-generated multimedia content (text, images, videos) for gaming communities. Must be a native or fluent Italian speaker with B2+ English proficiency and 6+ months of data annotation or content moderation experience.

System Engineer needed for cloud migration, infrastructure, and hybrid environments. Responsibilities include planning and executing migrations, optimizing systems, and managing Azure and on-premises systems. Requires 3+ years of experience in system engineering or IT infrastructure roles with hands-on experience in Microsoft Azure and cloud migration strategies.

QA Automation Engineer needed for a challenging technical project. Define and develop a test automation strategy, execute automated tests within CI/CD pipelines, and evaluate automation tools and frameworks, particularly in Java and/or .NET environments.

Lead the design, architecture, and delivery of SAP S/4HANA solutions. Define end-to-end architecture, ensure alignment with enterprise standards, and guide functional and technical teams.

Full Stack Engineer to build and scale an internal GPT assistant using Node.js, Python, and MongoDB. Responsibilities include platform development, architecture, and driving innovation with generative AI. Requires experience with version control, generative AI APIs, and document databases.

The Technical Lead (Cloud) designs, delivers, and ensures the quality of AWS-based integration solutions. This role involves hands-on development, technical leadership, mentoring, and architectural decision-making. Responsibilities include managing integration engineers, building and securing AWS and SaaS environments, and leading architecture decisions for APIs, event-driven systems, and data integrations.

SAP SD/MM Junior Consultant to support implementation, enhancement, and optimization of SAP solutions. 3-4 years of experience with SAP SD and/or MM required. Fluent Portuguese and English.