freelance English-speaking jobs in Barreiro

Designs, develops, and executes automated and manual test cases for OSS/NMS applications. Validates REST APIs, SOAP services, and JMS-based integrations. Performs database validation and data consistency checks.

Lead and grow a team of 25 software engineers delivering high-quality, secure, and compliant solutions in a regulated fintech environment. Shape engineering culture, drive delivery excellence, and ensure innovation is balanced with governance and risk management.

Lead the end-to-end search experience for the Booksy consumer app, defining and executing a product strategy aligned with consumer needs and marketplace growth.

The Product Owner for the AI Apps Team will translate product initiatives into detailed requirements, maintain and prioritize backlogs, and partner with engineering, UX, QA, project management, and product leadership to ensure successful delivery of customer-facing AI capabilities across Intermedia products.

Lead engineer responsible for the technical integration of acquired companies into the Deel ecosystem. Manage user and data migrations, Okta integrations, and system consolidations. Ensure zero downtime and compliance during M&A transitions.

The Sustainability Technician will ensure compliance with sustainability regulations and ISO 14001 standards. Responsibilities include coordinating sustainability activities, managing KPIs, conducting audits, and collaborating with authorities. Requires a Bachelor's degree in Environmental Engineering, fluency in Portuguese and English, and 2+ years of experience.

Senior Software Engineer to build and operate distributed data pipelines in Java and Go. Experience with Kafka, Elasticsearch, and open-source components required.

Leads and participates in the development and implementation of initiatives to enhance performance, capabilities, and collaboration across business areas. Develops and leads strategic programs and projects to improve governance documentation and performance.

Freelance Python Test Framework Specialist needed for AI projects. Coordinate cross-language migration workflows, design test frameworks, and build Docker images. Requires 5+ years Python experience, familiarity with C, Rust, Go, and B2 English proficiency. Project-based, part-time, with rates up to $30/hour.

Develop secure and scalable AI solutions leveraging Microsoft Azure, focusing on large language models (LLMs) and integrating with corporate data.

Native European Portuguese voice talent sought for AI voice cloning project. Record scripts, prompts, and conversations to develop a high-quality AI model. Must have a clear, consistent, and professional speaking voice.

Rental Sales Agent needed to handle reservations, process agreements, and maximize sales opportunities. Proven sales experience and strong customer service skills required.

Manage international accounts across Europe, onboard new suppliers, and develop strategic relationships. Support supplier sales and operational KPIs. Requires sales experience, negotiation skills, data analysis, and fluency in Portuguese and French.

Business/Technology Strategy Analyst graduates will conduct analysis, research, and present findings to uncover value creation opportunities for clients. They will identify strategic drivers, work with teams to shape solutions, and communicate effectively.

Full-Stack Software Engineer will design, implement, and maintain backend-heavy systems for a key product, ensuring privacy, performance, and scalability. Experience with Node.js/TypeScript, Python, and DevOps practices is required.

Senior Software Engineer will design, develop, and test software solutions for a scalable distributed system. Responsibilities include architecting services, reviewing code, and guiding the team to write production-ready code. Requires experience with Kotlin/Java/Scala, cloud infrastructure (ideally AWS), and software design and development.

Support the development of native Android applications for Connectivity products. Contribute to requirements clarification, software prototyping, and design implementation.

Country Marketing Manager for the Netherlands website. Responsibilities include influencer outreach, growth strategy implementation, content creation and localization, and driving traffic to the website. Native Dutch speaker required.

The Manager, Planning & Logistics leads capacity, resource, and logistics planning for the division, owning the budget and performance of a medium-sized team. The role drives planning accuracy, operational efficiency, process excellence, and stakeholder communication.

Circle is seeking a Video Editor to join the Design Studio. The Video Editor will edit raw footage into finished stories, shaping narratives and pacing. This role focuses on finding the story in raw material and delivering a locked cut for animation. After animation, the Video Editor handles color, audio, and final delivery.