freelance English-speaking jobs in Valongo

Senior JavaScript Full Stack Engineer will design, develop, and maintain high-concurrency back-end services and dynamic user interfaces. Responsibilities include architecting solutions, collaborating with stakeholders, and mentoring team members. Must have expertise in Node.js, React.js, TypeScript, databases, cloud platforms, and API design.

Develop and enhance a Conversational AI platform supporting AI-powered business use cases. Design, implement, and maintain APIs and Python-based services. Build data pipelines using Airflow and prepare data for AI applications. Onboard new AI use cases and support deployments across multiple countries. Collaborate with DevOps, MLOps, Data Engineering, QA, Security, and Product teams. Provide technical administration and operational support for the platform. Monitor platform health, chatbot performance, and application stability. Troubleshoot production incidents and resolve complex technical issues.

Sales Area Manager responsible for identifying new customers and distribution partners in Portugal. Develops technical and financial solutions, manages customer relationships, and ensures profitability. Requires 10+ years of experience in industrial electrical equipment sales and distribution channel development.

Jobbex seeks a Backend Engineer - Product to build and maintain backend services for a client. Responsibilities include developing high-performance, distributed systems, writing clean code, and supporting production systems. Requires 3+ years of backend development experience (Java or similar), a Computer Science degree, and experience with distributed systems and scalable applications.

Manage the end-to-end card dispute process for merchants under Visa and Mastercard schemes. Analyze transactions, prepare representments, and collaborate with banks and merchants to resolve disputes. Monitor chargeback trends, support risk mitigation, and ensure compliance with scheme rules.

The Payroll Specialist ensures accurate and timely payroll processing for multiple European entities, adhering to local legislation and company policies. The role involves monitoring personnel changes, ensuring statutory compliance, and coordinating with external providers.

Provides customer service, collaborates with team, and meets KPIs. Recommends and upsells security and compliance products. Requires 1+ years of customer support or sales experience, fluency in Polish and English, and proficiency in Microsoft Office Suite.

Fullstack Developer will own features end to end, building React interfaces, APIs, and data pipelines. Responsibilities include building the operational frontend, working with AI, ensuring correctness, and maintaining system reliability. Requires experience building production systems, React, and at least one backend ecosystem (C#/.NET, Node.js/TypeScript, or Python).

Auxadi seeks a detail-oriented Office Manager to manage daily operations, coordinate with suppliers, and support facilities management. The role requires strong organizational skills, proficiency in Microsoft Excel, and fluency in English.

Leads the implementation and governance of BIM methodologies across complex infrastructure projects. Manages multidisciplinary BIM teams, develops and validates BIM models, and ensures compliance with standards. Drives digital innovation and provides technical leadership to BIM specialists.

Skilled Carpenter needed for full-time position. Responsibilities include reading blueprints, measuring and cutting materials, installing structures, and repairing existing fixtures. Previous experience preferred. Must be able to legally work in Almada.

Automation Systems Analyst needed for a national project. Responsibilities include performing functional specifications and implementation, automating accounting data pipelines, and ensuring support and maintenance of accounting interfaces. Requires 3+ years of experience in banking, accounting, or finance, knowledge of financial information systems, and experience with application support. Fluency in English and Portuguese is required.

Project Manager to lead and oversee project planning, execution, and completion from award to installation. Responsible for driving project success, meeting client expectations, and promoting Haworth's project management services. Requires a university degree in Project Management or Business, 5+ years of experience, and fluency in Portuguese, English, and Spanish.

Advises, monitors, and supports the Ingka Group on direct and indirect tax matters. Implements country tax strategy, ensures tax control, and files tax returns. Supports management and statutory reporting, manages transfer pricing documentation, and advises on tax optimization.

Data Scientist will design and develop product prototypes based on financial and travel spend analysis, utilizing Python, R, JavaScript, or Tableau. This role translates analytical insights into actionable tools, working with engineering teams to operationalize data science workflows.

Lead a team of BI Architects and Analysts, defining and executing the Data Visualization Practice roadmap and service offerings. Define engineering standards for the team, including TMDL, Git, and CI/CD pipelines. Architect robust semantic models that integrate with modern data platforms. Ensure solutions are scalable, performant, and meet client needs.

SAP SD Consultant will build and maintain system landscapes for implementation and rollout. Responsibilities include creating migration plans, designing legacy system changes, and guiding projects through all phases. Requires a Bachelor's degree in a relevant field, proven experience as an SD Consultant, and expert knowledge of SAP/S4 HANA and ECC releases.

Execute technical SEO audits, manage SEO initiatives, and evaluate website performance. Contribute to content and technical implementations to improve discoverability across various search platforms. Provide SEO analyses and recommendations to drive organic visibility.

Security Engineer will design, configure, and integrate digital identity security solutions. Responsibilities include implementing, testing, and approving change requests, providing customer support, and operating security solutions.

Territory Account Executive will build and grow pipeline in Portugal, developing relationships with senior stakeholders and driving customer success. This role requires quota-carrying B2B SaaS or cloud technology sales experience and fluency in Portuguese and English.