freelance English-speaking jobs in Castelo Branco

Lead end-to-end Finance transformation and regulatory projects, implementing accounting layer solutions across global platforms. Responsibilities include requirements gathering, solution design, testing, and UAT validation.

Annotate images and videos of people performing physical exercises using internal tooling. Tasks include labeling, quality-checking, and applying structured guidelines consistently across high volumes.

Join COLIBRIX ONE – Innovating the Future of Payments At COLIBRIX ONE*, we’re building advanced, AI-powered payment technologies that support Payment Service Providers (PSPs), Electronic Money Institutions (EMIs), and neobanks across the EU and the UK. As a fully licensed Electronic Money Institution (FCA Reference No.

B2B Sales Intern for the Iberia Market. Responsibilities include outbound prospecting, building B2B partnerships, managing the sales pipeline, and reporting on outreach performance. Requires full Spanish proficiency and strong English.

Embedded AI Engineer to redesign business workflows using AI-first principles. Build production-ready, orchestrated multi-agent pipelines, specializing in the Anthropic ecosystem. Partner with stakeholders to drive operational value.

Seeking a detail-focused Administration Assistant to support the office manager. Duties include managing correspondence, scheduling, document preparation, and maintaining organized filing systems. Requires high proficiency in Microsoft Office, strong organizational skills, and fluency in English.

Provide customer support to French-speaking clients via phone, email, or chat, resolving issues and maintaining records. Requires fluency in French and good English.

Digital Tracking & Measurement Specialist focusing on GTM and GA4. Responsible for implementing, maintaining, and quality-assuring digital tracking across web and mobile platforms to support sales and product decisions. Requires 3-5 years of experience.

Design and improve the technical backbone of a documentation platform using Python. Responsibilities include building Sphinx-based pipelines, owning CI/CD (GitHub/Bitbucket), and developing automation tools. Requires strong Python skills and experience with DevOps principles.

This role drives student attraction, enrollment, and retention for a premium international school. Responsibilities include leading the admissions team, executing marketing campaigns, managing the sales funnel, and overseeing brand strategy. A Bachelor's degree and 4-5 years of relevant experience are required.

Design and implement AI-powered solutions to enhance the SDLC and developer productivity. This hands-on role involves promoting AI adoption across engineering teams and improving processes using AI technologies.

Senior Software Engineer to own full-stack AI-powered features end-to-end, from UI to deployment. Build with LLMs and agentic frameworks for live client and internal delivery. Raise engineering standards through code review, testing, and CI/CD. Must have 5+ years of production software development experience, strong TypeScript/React, Node.js or Python, and experience with LLM APIs and agentic frameworks.

Assist in project planning, documentation, and task tracking. Support communication, risk identification, and data analysis while adhering to project management methodologies. Bachelor's degree in Business, Engineering, or related field preferred.

Senior Mechanical Design Engineer to lead mechanical design outputs for water, wastewater, and process projects. Requires 7-10 years' experience, BEng/MEng, and expertise in pumps, pipework, and HVAC.

UX Design Lead needed to create exceptional user experiences for Secure GPT, a GenAI web interface. Responsibilities include user research, end-to-end design, prototyping, and design system maintenance. Requires 3+ years of Product Design experience and fluent English.

Cloud Engineer with 5+ years of GCP experience. Must hold Google Cloud Professional Cloud Architect certification. Responsibilities include designing scalable GCP architectures, using Terraform for IaC, and managing Kubernetes.

Design and deliver digital learning experiences for global cybersecurity awareness. Conceptualize WBTs and role-based training, translating technical content into engaging formats. Requires 3+ years in corporate learning and e-learning authoring tools.

Junior Strategic Project Manager coordinates, plans, implements, and closes key strategic projects. This role requires partnering with department leaders and C-suite to ensure strategic alignment and resolve complex business challenges.

Proactive Finance & Operations Assistant to support daily administrative tasks. Responsibilities include maintaining financial records, processing invoices, updating reports, and providing customer support. Requires basic accounting knowledge and strong Excel skills.

Digital Support Agent role requiring fluency in Ukrainian and good English. Responsibilities include providing customer support, handling queries, and maintaining high-quality customer interactions.