freelance English-speaking jobs in Valongo

Senior .NET Backend Developer to design, develop, and maintain applications using the .NET framework and microservices architecture.

Provides administrative support and maintains clinical documentation for MoonLake sponsored clinical studies. Assists with document management, meeting preparation, and clinical trial tracking. Supports Clinical Operations Managers and ensures public disclosure requirements are met.

Machine Learning Engineer to design, build, and deploy robust ML pipelines on Databricks for NLP and multimodal systems. Develop scalable APIs and services, manage data flows, and implement monitoring for model performance.

Senior QA Testing Specialist with a focus on automation. 5+ years of professional testing experience required, including 3+ years in Agile environments. ISTQB Foundation Level certification is mandatory. Expertise in Selenium, Java, JUnit, REST APIs, and SQL is essential. Responsibilities include functional, integration, system, performance, and regression testing. Strong collaboration and communication skills are crucial for working with international, cross-functional teams.

Fullstack developer to architect, build, and scale features for an AI-powered GTM platform. Develop backend services in Node.js/NestJS/TypeScript and frontend dashboards with Angular. Deploy and monitor services on AWS.

Talent Acquisition Specialist needed for a multinational BPO company. Source and attract candidates, conduct interviews, and partner with hiring managers. Must be fluent in Dutch or German and English. Minimum 1 year of recruitment experience required.

Business Analyst / Functional Analyst – Customer Care to translate business needs into Salesforce Service Cloud solutions. Collaborate with stakeholders, write requirements documentation, and support solution design and Agile delivery.

Develop and support software solutions for Kuehne+Nagel's global systems. Design, develop, and implement backend systems using Java, Spring Boot, Kafka, and Postgres. Collaborate with teams to deliver high-quality software solutions.

Manages and elevates butler service standards across a fleet of luxury vessels. Drives consistent, personalized service delivery and strengthens butler team capabilities. Provides training, feedback, and support to ensure high-quality service.

Service Desk Specialist provides 1st and 2nd level technical support via ticketing system, email, and phone. Troubleshoots system issues, monitors systems, and ensures compliance with SLAs. Requires background in IT, customer support, or related field with experience working with international clients. Must be fluent in English and local language.

Capgemini Engineering seeks a Senior Storage Engineer to design and implement storage solutions in Lisbon. Requires 5+ years of experience in storage, operating systems, and system administration. Proficiency in Terraform, Ansible, and scripting is needed.

As a DevOps Release Manager, you will own and maintain the release calendar, coordinate end-to-end release activities, and ensure software reaches production smoothly. You will lead release readiness reviews, approvals, and go/no-go decisions.

Senior ML Engineer with 5+ years of experience developing and deploying ML solutions across various business areas. Responsibilities include selecting appropriate ML approaches, building end-to-end solutions, and designing LLM-powered features. Strong expertise in ML, mathematical statistics, and engineering practices is required.

Data Engineer to design, develop, and maintain scalable data models in Snowflake and BigQuery using dbt. Translate marketing business logic into SQL code and ensure data quality and freshness.

Experienced, self-employed International Financial Advisers with Level 4+ qualifications are sought by a privately owned, long-established wealth management firm. The firm is heavily invested in AI technology to enhance the adviser experience and client service.

Sysmatch seeks a .NET Developer with a Bachelor's degree in Computer Science or related field and 3+ years of C# experience. Must have Visual Studio proficiency and experience with web applications development. Kafka and familiarity with Bootstrap and Angular are a plus.

Leads and oversees initiatives to optimize airport access, infrastructure partnerships, and digital integration. Develops and executes strategic opportunities to enhance operational resilience and reliability. Manages airport access intelligence, risk levels, and mitigation strategies. Collaborates with internal and external stakeholders to ensure operational excellence and an exceptional Owner experience.

Pricing Specialist needed to develop and execute pricing strategies, analyze market trends, and collaborate with cross-functional teams. Must have strong analytical skills, fluency in English (C1 minimum), and experience in pricing, data analysis, or financial modeling.

Senior .NET Core Developer sought for national and international projects. Requires minimum 4-6 years of experience with .NET Core, microservices architecture, and SQL Server. Experience with JavaScript, TypeScript, HTML, CSS (Bootstrap), Azure, Agile, and Unit Testing is beneficial. Strong written and verbal communication skills in Portuguese and English are essential.

Senior Sustainability Advisor to deliver ESG strategy, climate transition, and decarbonization initiatives. Leads projects, builds client relationships, and contributes to business development. Requires 8+ years of experience and a Bachelor's Degree in a relevant field.