freelance English-speaking jobs in Valongo

Data Engineer needed to design and implement data solutions for a large retail company. Must have 8+ years of experience with Azure Data Factory, Synapse, and Power BI. Expertise in data modeling, ETL/ELT pipelines, and cloud-based data storage is required.

Build and manage a global community for email deliverability professionals across Slack, WhatsApp, Telegram, and Discord. Grow the community with B2B members and create engaging content.

Production Engineer with 2+ years of experience in DevOps/Production Engineering. Responsibilities include ensuring production system stability, implementing monitoring solutions, automating processes, and collaborating with cross-functional teams. Requires knowledge of observability tools (e.g., Dynatrace), Terraform, OpenShift/cloud environments, schedulers (CFT, AutoSys), and automation scripting (Python, Ansible).

Tech Lead QA Engineer will design, develop, and maintain automated test scripts for software applications. Responsibilities include collaborating with the product team, implementing test frameworks, and executing automated tests to ensure functionality, performance, and security. Requires 10+ years of experience testing digital products, proficiency in Java, JavaScript, Angular, PostgreSQL, Cypress, Playwright, and Selenium, and strong communication skills in Portuguese and English.

Full Stack Developer (Python + Vue.js) to develop and improve internal platforms, ensuring seamless user and partner experiences. Requires 3+ years of experience building web solutions with Python and JavaScript, experience with relational and non-relational databases, and knowledge of Docker/Kubernetes. Native Ukrainian and good written English required.

Manual Tester will ensure quality and reliability of a finance platform through comprehensive testing. Responsibilities include writing test cases, designing test scenarios, executing manual tests, and documenting results.

DevSecOps Security professional with 3+ years experience in application security and software development. Promotes secure coding practices, integrates security tools into CI/CD pipelines, and collaborates with development teams. Fluent English and good French required.

Senior Software Engineer to design, develop, and maintain high-performance systems for a fintech company. Expert in Java, Kotlin, Golang, or .NET with experience in microservices, API development, and system design.

Leads large-scale global IT projects, specializing in IAM/IGA initiatives. Manages project scope, schedule, budget, and deliverables. Provides technical guidance on IAM concepts and ensures project alignment with group baselines.

IT Architect to lead development projects, design solutions, and ensure architecture and security within a leading international banking group. Requires fluency in French, experience with Agile methodologies, and proficiency in programming languages and frameworks.

Lead .NET developer to design, develop, and deploy full-stack applications using .NET Framework/.NET Core and modern UI frameworks. Provide technical leadership and mentorship to a team of developers.

Freelance International Market Development Coordinator needed to manage and scale Superprof's presence in Portuguese and French-speaking markets. Responsibilities include managing SEO and acquisition strategies, analyzing performance data, and coordinating product localization. Must have excellent understanding of Brazilian and Portuguese cultures, fluency in Portuguese and French, and familiarity with online advertising and SEO fundamentals.

Sample Production Technician performs and monitors sample schedules and tests based on requirements, orders, and deadlines. Provides technical support to production line employees and clarifies difficulties during sample programming, assembly, and testing. Records deviations, performs electrical measurements, and ensures compliance with quality standards. Possesses analytical skills, knowledge of hardware and circuit diagrams, and proficiency in English.

Asset Accountant needed to review contracts, track project costs, and manage asset lifecycles. Requires 5-10 years of experience in accounting, asset, or project finance with knowledge of CAPEX control, contract review, and IFRS. Experience with Portuguese government grants and EPC projects is a plus.

Develop and maintain data pipelines using Apache Spark. Implement distributed data processing solutions with a focus on performance and scalability. Write efficient, well-structured code in Java. Collaborate with Data Engineering, Analytics, and Dev Ops teams.

As a Business Analyst in Springer Nature Technology, you will connect IT and business functions to deliver value across the organization. You will analyze data to inform changes and improve IT products, services, and processes. You will collaborate with stakeholders to explore problems, contribute to solution designs, and prepare investment cases. You will also support the Mergers & Acquisitions (M&A) team with technical due diligence and integration planning.

Lead a high-impact security engineering team developing AI-driven cybersecurity solutions for web hosting providers. Define direction, build a high-performance team culture, and convert business goals into technical initiatives.

Senior Sales Executive to drive new business development in energy and related industries. Focus on selling software development, IoT, integration, and data-driven services engagements. Requires 10+ years of B2B sales experience, a proven track record of closing deals, and an existing network in the energy sector.

Quality Specialist will review translated content for accuracy, grammar, and cultural appropriateness. Responsibilities include identifying quality issues, providing feedback, and monitoring quality trends. Must be fluent in German (C1 level or higher) and have at least 12 months of experience in a quality-related role.

Data Steward needed for hybrid role in Porto. Requires 3+ years experience in data management, business analysis, or similar. Strong understanding of data governance, data quality, and metadata management. Familiarity with data governance tools, scripting languages, and data visualization tools. Excellent communication and teamwork skills.