freelance English-speaking jobs in Barreiro

Owns the performance, reliability, security, and operation of SQL and NoSQL database platforms. Partners with application, platform, and security teams to ensure scalable, resilient, and observable databases. Designs, operates, and hardens production-grade database systems with strong replication, failover, backup/restore, and security controls. Enforces database security best practices and codifies database infrastructure and operations using Infrastructure as Code.

Administers and operates JIRA as the primary backlog management platform, ensuring stable service, user support, and change delivery. Integrates JIRA with platforms like Silva ITSM, PEPPS, GitHub, and Power BI. Manages project configurations, workflows, permissions, and security. Provides user onboarding, training, and knowledge base development.

Senior Product Manager to oversee product direction and market positioning for GMS telecom portfolio. Translate business needs into successful offerings and guide products from concept to market introduction.

QA Automation Engineer will write and maintain automated tests for iOS, macOS, Web, Android, and Windows applications. Collaborate with product, development, and delivery teams. Requires 5+ years of test automation experience, programming skills with Java and Kotlin, and proficiency in tools like Selenium, Appium, and JUnit.

Senior Full-Stack Engineer will design, build, and scale back-end services in Golang and UI/UX experiences in React. This role collaborates with the Billing and Partner team to deliver solutions that are modern, scalable, and efficient. The ideal candidate has 7+ years of experience as a full-stack engineer with exposure to SaaS products used by many customers.

Backend Developer will design and build scalable architecture using NestJS and TypeScript. Responsibilities include database design, API implementation, and migrating legacy code. Requires 3+ years of experience, proficiency in NestJS and TypeScript, and understanding of RESTful APIs and Clean Architecture.

Data Scientist to structure, analyze, and derive insights from financial datasets. Apply statistical modeling and machine learning to build predictive products for commercial strategy, forecasting, and financial performance.

IT Functional Specialist will support business users by implementing solutions within the IT IDM landscape. Responsibilities include coordinating changes, creating customizations, troubleshooting issues, and providing user training. The role also involves monitoring application interfaces, ensuring smooth integration between systems, and managing incidents, demands, and changes according to ITIL best practices. Documentation of IT IDM processes, interfaces, and user guides is also required.

Leads the design, architecture, and implementation of SAP S/4HANA solutions. Translates business requirements into scalable SAP solutions and defines integration architecture. Provides governance on best practices, data models, security, and performance optimization.

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.

Research & Development Assistant to analyze ingredient trends, support formulation analysis, and manage supplier relationships.

AgileEngine seeks a Middle/Senior Backend Engineer to architect and scale a modern Ads platform. You will design high-performance backend systems and APIs, process large advertising data volumes, and collaborate with product and data teams.

The Website Services Project Manager manages digital programs for Nestlé businesses and markets. This role ensures project goals are met and acts as the main interface between the business, markets, agencies, Nestlé IT, and the Integrated Marketing Services Website & D2C Service operation team.

Payroll Support Specialist will manage administrative data, collaborate with internal teams, and serve as a liaison between the company and the external payroll partner.

Senior Frontend Engineer (React + Node.js) needed with 7+ years of experience in frontend development. Must have strong experience with React, Node.js, REST APIs, and responsive web applications. Experience with UI component design, unit testing, Git, and CI/CD workflows is required. Fluent English is necessary.

Media Buyer to plan, launch, and manage paid media campaigns across Meta, TikTok, Google Ads, Pinterest, and YouTube. This role involves daily campaign optimization, experimentation, and collaboration with media strategists, creative teams, ticketing, and operations. Weekend operational support is required, monitoring live events for schedule changes.

Provide customer support via phone, email, and chat, addressing inquiries about products and services. Document interactions, escalate complex issues, and collaborate with internal teams.

The Product Designer will create end-to-end digital experiences, balancing user needs, business goals, and technical feasibility. They will translate insights into design problems, participate in co-creation sessions, and analyze research to inform design decisions. Responsibilities include designing product architecture, user flows, and interfaces, ensuring visual consistency and accessibility. The role also involves interpreting behavior metrics, iterating on designs based on data, and collaborating with cross-functional teams.

Senior/Lead Data Engineer with expertise in cloud-native data pipeline development within Microsoft environments. Strong background in data architecture, data modeling, and implementing high-performance data solutions. Minimum 5 years of experience in data engineering.

Manage a team of Sales Development Representatives (SDRs) and Business Development Representatives (BDRs) to achieve sales targets. Lead, coach, and develop early-in-career sales talent. Collaborate with Sales, Marketing, Sales Operations, and Talent Acquisition.