freelance English-speaking jobs in Barreiro

Support Specialists resolve customer issues through various channels, including calls, email, chat, and tickets. They investigate issues, communicate with stakeholders, and document customer interactions. Must be proficient in Dutch and English, have strong computer skills, and be passionate about providing excellent customer service.

Senior Application Security Analyst to identify, assess, and remediate vulnerabilities in production environments. Collaborate with development, IT, and security teams to drive remediation actions and improve vulnerability management processes.

Senior Staff Data Scientist will lead the development and scaling of AI products using Large Language Models. Responsibilities include architecting the "brain" of the AI system, designing agent topologies, and optimizing LLM costs and latency. Requires 10+ years of experience in technical fields with a strong track record in Data Science and AI product development. Expertise in agentic frameworks, advanced evaluation methods, and system orchestration is essential. Fluent English is required.

Develop, monitor, and maintain scalable software systems using Typescript (React, Node) in an AWS environment. Collaborate on web application architecture and contribute to phishing simulation development.

As a Translator / Linguist, you will translate and edit video game text, ensuring accuracy, consistency, and cultural appropriateness for Spanish markets. You will collaborate with a team to deliver high-quality, immersive experiences.

As a Cyber Threat Intelligence Specialist, you will analyze vulnerabilities, prioritize exposures based on exploitability and business impact, and orchestrate remediation actions. You will contribute to the continuous improvement of the CTEM program and support the team in policymaking.

Senior Client/Partner Director to drive new business growth with Tier 1 service providers. Focus on complex, multi-disciplinary solutions spanning technology, services, and process transformation. Requires 8-12+ years of experience selling to telecom, cloud, network, or managed service providers. Proven track record of closing large, multi-million dollar deals.

Growth Marketing Manager will build and execute a holistic strategy focused on scalable lead generation and revenue impact. Responsibilities include owning inbound funnels, driving experimentation, translating insights into assets, and collaborating on go-to-market plays.

Financial Controller responsible for internal and external group reporting. Supports international growth while safeguarding reporting integrity and managing key risks. Collaborates with local and international teams on weekly and periodical activities including performance reporting, period close, and budget forecasting.

The University of Coimbra is seeking a First Stage Researcher (R1) to work on the BIOCOMPOSITE project. The project focuses on the development of sustainable polyester-based composites using cellulose fibers. The grant is for 12 months with the possibility of renewal.

Supports the analysis and improvement of P2P processes. Executes data management rules, prepares reports, and trains project team members. Requires a bachelor's degree, experience in supply management, and fluency in Italian and English.

Senior .NET + React Developer sought for a dynamic project with an internationally respected client. Requires 5+ years of experience in .NET Core (C#), Azure, SQL Server, Oracle, React, and FlexView. Experience with OpenShift/Kubernetes, Agile methodologies, and a focus on quality practices is essential.

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.

Principal Game Designer for Mob Control will own the product's vision, execution, and strategic direction. Responsibilities include designing features, evolving gameplay, collaborating with teams, and leveraging player insights to improve retention, engagement, and monetization. Requires 5+ years of experience in mobile midcore games with a proven track record in gameplay design, balancing, and meta feature design.

Senior Copywriter to create and optimize high-impact content for a corporate website, paid campaigns, and editorial projects. Must have 5+ years of experience, proficiency in English, and a versatile portfolio.

Lead and contribute to Canonical's Visual Design practice, ensuring brand and site experience consistency. Manage a team of visual designers, drive innovation, and deliver high-quality design solutions. Collaborate with stakeholders and design systems to evolve guidelines and improve efficiency.

The Pastry Cook I supervises and oversees the preparation of food items for guest orders, ensuring consistent quality. This role requires a proven culinary and supervisory background in a luxury hotel environment. The ideal candidate has a creative flair, strong leadership abilities, and proficiency in a variety of kitchen equipment.

Provides administrative support to Commissary Management, including purchase orders, stock coordination, and new aircraft stocking processes. Assists with logistics, reporting, and project support. Requires a Bachelor's degree and 2-4 years of experience.

Contract Maintenance Manager will oversee operational, financial, and contractual processes for global maintenance operations. Responsibilities include managing contract repositories, aggregating financial data, and coordinating contract reviews. Requires 4+ years of experience in commercial operations, contract administration, or finance, proficiency in SAP, Salesforce, and BI tools, and strong analytical and communication skills.

Simple Life is seeking a Product Design Lead to build, maintain, and scale effective design processes and team culture. The ideal candidate has 5+ years of experience leading a design team of 5+ people and a proven track record of growing and empowering talent. Strong expertise in building, scaling, and optimizing product design processes across squads and cross-functional teams is required.