freelance English-speaking jobs in Valongo

Junior Backend Developer will design, build, and maintain backend services using .NET, C#, EF Core, and SQL Server. Responsibilities include collaborating with an Agile team, ensuring code quality, and owning the full DevOps lifecycle.

Leads a team of Data Scientists focused on revenue optimization, pricing intelligence, personalization, and experimentation. Designs and scales experimentation frameworks and drives the adoption of adaptive optimization approaches.

Experienced IT DevOps Lead to drive cloud infrastructure evolution in Google Cloud. Lead DevOps team, design secure and scalable cloud architectures, and implement CI/CD pipelines using GitLab. Manage infrastructure components, security controls, and cost optimization. Lead incident resolution and collaborate with cross-functional teams.

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.

Technical HCM Consultant specializing in Security and Fast Formulas for Oracle HCM implementation, support, and operations. Responsibilities include designing and implementing security models, developing fast formulas, and creating custom reports.

Power Platform Developer with 4+ years of experience in Power Apps, Power Automate, and C#. Must have a Bachelor's degree in a related field and fluency in English.

Experienced IBM Cloud Pak for Business Automation Architect needed for international project. Requires 7+ years experience with IBM Cloud Pak for Business Automation (v18.0.0 or higher), FileNet, Case Management, and IBM BAW/BPM. Must have proven track record, fluency in English or French, and flexibility for occasional travel. Responsibilities include defining technical vision, producing technical analyses, supervising implementation, and participating in Agile ceremonies.

Provides administrative, staff, and reporting support to the F&B team. Manages schedules, correspondence, and budgets. Tracks expenses, prepares reports, and analyzes data. Requires a degree, 1 year of experience, and fluency in English and Portuguese.

Automation Solutions Specialist needed with 5-10 years of experience in infrastructure and platform automation using Ansible, Terraform, and cloud platforms (AWS, Azure, or GCP). Requires scripting proficiency (Python, Bash), Linux administration knowledge, and strong communication skills for explaining complex automation concepts to diverse audiences.

The LMS Administrator will manage and optimize the company's Learning Platform, primarily SAP SuccessFactors Learning and ServiceNow. Responsibilities include user management, content upload and troubleshooting, reporting, and support.

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.

Jobbex is seeking a Firewall Specialist to plan, coordinate, and execute firewall infrastructure updates for a client. Responsibilities include preparing documentation, presenting changes to CABs, managing service requests, and ensuring compliance with security policies.

Junior IT Engineer will analyze and optimize IT environments, implement solutions, and support quality assurance frameworks. Must have a Bachelor's or Master's in Computer Science and fluency in English.

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.

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.

Data Engineer with 5+ years of experience designing, implementing, and maintaining data pipelines using Databricks and Synapse. Experienced in building and managing data products across bronze, silver, and gold layers, integrating structured and unstructured data. Ensures data quality, governance, security, and lineage while optimizing processes for scalability, performance, and cost efficiency. Collaborates with Data Architects, Business Analysts, and stakeholders to translate business requirements into technical solutions. Experienced in automating workflows, testing, and deployments through CI/CD practices. Proficient in Python, PySpark, and SQL. Hands-on experience with Azure Databricks, Azure Synapse, Azure Data Lake, and Azure Data Factory. DevOps and automation expertise (CI/CD, Git, Terraform). Familiarity with data governance tools (Microsoft Purview, Unity Catalog). Agile mindset with focus on standardization, documentation, and reusability.

Data Engineer to design, build, and maintain data models and pipelines. Develop APIs, ensure data quality, and collaborate with cross-functional teams. Requires strong SQL, Python, Azure Data Factory, and Databricks experience.

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.

Detail-oriented professional to join a global financial markets environment, focusing on the control and monitoring of Sales and Trading activities. Ensures trading operations are conducted in line with internal policies, regulatory expectations, and risk standards.

Electronics and Embedded Systems engineer to develop and integrate sensing systems for ocean protection projects. Responsibilities include hardware design, firmware development, sensor interfacing, and system integration for buoys, USVs, UUVs, and other marine assets.