freelance English-speaking jobs in Barreiro

CarboCode seeks a Quality Assurance Manager to supervise production teams, ensuring compliance with GMP/GHPs, HACCP, and quality policies. The role involves coordinating continuous improvement projects, change controls, and investigations. Requires a degree in a science field and experience in production and quality assurance within a GMP/HACCP environment.

Junior Linux Kernel Engineer will collaborate with a global team to diagnose, resolve, and improve the Ubuntu Linux kernel. Responsibilities include working with external partners, submitting kernel patches, and improving tooling for kernel delivery and testing. Requires programming experience in C and/or Rust, familiarity with version control, and understanding of operating system kernel fundamentals. Ability to travel twice yearly for company events is required.

Embedded Software Tester for Wireless Gateways will create and implement test plans, design test cases, and develop automated test scripts. Requires experience with firmware testing, test automation tools (Git, Jenkins, Robot Framework), and Agile development.

Senior HRIS Analyst will configure and optimize Workday, partnering with stakeholders to drive process improvements and support the employee lifecycle. Responsibilities include designing, implementing, and testing Workday updates, integrations, and new modules.

Leads program management, technical architecture, and business analysis for Medical Affairs systems, ensuring seamless solution delivery and strategic enhancements. Oversees the end-to-end lifecycle of Medical Affairs IT initiatives, partnering with business leads and IT teams to align systems with organizational goals. Translates business needs into actionable deliverables and collaborates with stakeholders to define user stories, process flows, and system specifications. Manages relationships with vendors and development partners to ensure timely delivery of scalable, compliant solutions. Applies expertise in change management, service management, SDLC, and incident management to maintain high standards of performance and reliability. Communicates effectively across technical and non-technical audiences to foster collaboration and transparency.

Senior Accountant to support monthly closing, inventory accounting, fixed asset accounting, intercompany accounting, and balance sheet reconciliation. Requires advanced degree in Finance/Accounting, 5-7 years experience, CPA certification, and knowledge of Portuguese GAAP, IFRS, and Portuguese tax system.

Regional Marketing Manager for Microbiology conventional solutions (VITEK 2, ETEST, PPM, COPAN) in EMEA. Develops and executes regional marketing strategies, adapts global frameworks, and supports launch management. Requires 3-5 years of IVD marketing experience, ideally in Microbiology diagnostics. Fluent English, additional European languages a plus.

Delivers impactful airport IT solutions by partnering with the Project Manager to drive end-to-end customer-facing projects. Leads customer testing phases and provides technical expertise in meetings and pre-sales demos.

Senior Frontend Engineer with 8+ years of experience in React, TypeScript, and CSS. Collaborate on frontend strategy, build components, and contribute to a supportive team environment. Must have strong communication and problem-solving skills.

Develop and modernize backend components for a Transport Management System using Java, Spring Boot, and cloud services. Contribute to innovation within a collaborative agile environment.

Provide customer support via phone, email, and web chat in German and English. Guide users through PCI-DSS compliance and platform navigation. Resolve issues efficiently and recommend products/services when appropriate.

Freelance peer reviewers with a PhD/MD and two recent publications in CAR T-cell therapy are needed to assess manuscript novelty, study design, literature review, results, and provide constructive feedback. Prior peer review experience and familiarity with online review systems are desirable.

Mechanical Engineer needed for a project in Portugal. Design and manage complex mechanical systems, collaborate with electrical teams, and ensure compliance with safety standards.

Teacher of Art and Design to join a creative and forward-thinking department within a prestigious international school. Deliver engaging lessons aligned with Key Stage 3 and iGCSE specifications, fostering creativity and technical skill.

Provides administrative and operational support for office functions, facilities, and supplies. Coordinates travel, logistics, and onboarding processes. Supports HR and People Operations tasks, including employee records and documentation.

Customer Care Specialist provides support for road infrastructure services, handling customer queries, registering requests, and performing billing and reconciliation activities.

Senior AI/ML Data Scientist will design, develop, and deploy AI models for classification, regression, clustering, and recommendation tasks. Requires experience building and deploying AI models in production environments, proficiency in Python and machine learning frameworks, and experience with cloud platforms and AI/ML services.

Supply Chain Assistant to manage raw materials and packaging stock, follow up purchase orders, monitor forecasts, and prepare reports. Requires 1+ year of experience in supply chain, purchasing, or stock management. SAP experience is beneficial.

Talent Specialist - Learning & Development will implement and monitor the Belron Group's Talent Management framework. Responsibilities include leading performance management cycles, designing and delivering training programs, and driving leadership development initiatives. Requires a degree in a related field and 3+ years of HR Development experience. Fluent English is mandatory.

Product Designer needed to design end-to-end product experiences for a suite of B2B and analytical products. Collaborate with product and engineering teams to translate requirements into intuitive design solutions. Experience designing dashboards, analytics tools, and data-heavy interfaces is required.