freelance English-speaking jobs in Valongo

Lead the Hardware Certification roadmap and drive OEM partnerships. This role requires technical vision, product leadership, and experience in open source, Linux, and computer architecture.

Quality Assurance Manager to empower product teams to deliver high-quality software as a medical device. Manage QMS, SDLC, and ensure compliance with ISO 13485 and regulatory standards.

Sama seeks experienced, credentialed coaches with 3+ years of professional coaching experience, including corporate work. Candidates must have 10+ years of professional experience.

Senior ABAP Developer role focusing on designing and maintaining custom SAP applications in S/4HANA and BTP. Responsibilities include modern ABAP (RAP), Fiori development, and integrating with Project Systems. Requires 5+ years of experience.

Senior Data Engineer needed for a long-term migration to Microsoft Fabric, utilizing Databricks. Responsibilities include designing ETL pipelines, building data workflows, and creating reports. Requires 5+ years of experience with Databricks and Fabric.

Own security and compliance strategy for Azure and OCI estates. Design secure landing zones, drive container-security architectures, and build automated policy as code to enforce guardrails. Requires 5 years in public cloud.

Supports housekeeping operations at Pestana Porto Covo Village. Ensures cleanliness, orderliness, and appearance of the hotel. Manages room preparation, supplies, and inventory. Develops and implements housekeeping systems and procedures. Requires 3+ years experience as an Executive Housekeeper or similar, Opera software proficiency, and strong communication and organizational skills.

Senior React Native Developer for a 12-month remote contract. Build and maintain cross-platform mobile applications for Android and iOS. Requires 5+ years in React Native development and fluency in Portuguese.

Join a Work from Home Market Research Panel to earn extra income by taking surveys and participating in research studies. Requires a working camera and reliable internet connection.

Data Analyst role transforming business questions into actionable insights. Requires 4+ years in analytics, strong SQL proficiency, and experience building reports with BI tools. Focus on end-to-end analytical ownership.

Full-Cycle Account Executive for the German market. Own the entire sales journey from prospecting to deal closure, targeting Real Estate, PropTech, brokerages, and developers using data-driven solutions. Requires native German and fluent English.

Build and maintain data infrastructure for analytics, including pipelines, visualization, and data architecture. Manage data systems to ensure accuracy and security while analyzing parts data for trends. Requires 5+ years in high-volume data management.

Platform Engineer role requires 5+ years in Data Platform/Cloud/DevOps. Must have expertise in AWS/Azure (EKS/AKS), Terraform, Kubernetes, and data components like Kafka/Airflow. Proficiency in Python/Go and fluent in Portuguese/English.

Senior Unity Developer needed to build and scale mobile games using Unity (C#). Responsibilities include feature development, performance optimization for iOS/Android, and collaborating with design and art teams. Requires 5+ years of mobile game development experience.

Lead Performance Marketing Manager for a desktop game launcher. Own the performance strategy, running end-to-end campaigns across major platforms. Requires 10+ years in gaming performance marketing with expertise in Google, Meta, and TikTok.

Data Analyst needed to collect, organize, and analyze large datasets to identify trends and insights. Responsibilities include creating reports and supporting decision-making. Requires a relevant degree, 2+ years of experience, and proficiency in SQL and Excel.

We are seeking experienced AI Safety Red Teamers to identify vulnerabilities in frontier AI systems through adversarial testing. You will design challenging prompts, uncover model weaknesses, and evaluate AI behavior across complex, high-risk, and ambiguous ("grey-area") topics. Responsibilities Design adversarial prompts to stress-test frontier AI models.

Senior Cloud Engineer (GCP) to design, build, and maintain scalable GCP solutions. Responsibilities include leading secure architectures, managing networking, and developing Infrastructure as Code with Terraform. Requires 5+ years of GCP experience and a mandatory Google Cloud Professional Cloud Architect certification.

Senior AI Engineer to design and scale robust data infrastructure for multimodal models across large GPU clusters. Responsibilities include building preprocessing algorithms and automated acquisition pipelines for video, audio, and text. Requires strong Python skills and experience with petabyte-scale data.

Seeking an Azure Platform Engineer with 8+ years of experience. Expertise required in Azure, cloud-native development, Kubernetes, CI/CD, and IaC using Terraform. Must understand security best practices and be fluent in English.