freelance English-speaking jobs in Viseu

Senior Frontend Developer will develop new user-facing features, solve coding issues, and optimize code for performance. Requires experience with JavaScript (ES6), HTML5, React, and CSS3. Knowledge of HTTP(s), REST, and JSON is also needed.

Operations Assistant to support the daily running and pre-opening of a new 13-apartment building in Porto. Will assist the Assistant Manager with guest services, apartment upkeep, supplier coordination, and administrative tasks. Previous hospitality experience required.

Manage and optimize Meta Ads and Google Ads campaigns for eCommerce clients. Build, launch, monitor, and optimize paid media campaigns across Meta and Google. Analyze performance data to identify trends, issues, opportunities, and next steps.

The Ethics & Compliance Manager will manage and develop a global ethics and compliance program. Responsibilities include maintaining policies, administering training, overseeing investigations, and managing third-party screening.

Systems Administrator needed for international project. Support Ansible Tower infrastructure, Centrify and Trellix solutions, and provide regional IT support. Requires strong understanding of infrastructure architecture, Windows Architecture, and scripting skills in Powershell, Ansible, and Python. Fluency in English and notions in French are required.

Clearance Broker needed for Customs Clearance team. Reviews shipment data, creates clearance declarations, and resolves customer and customs disputes. Requires good Dutch language skills (B2-C1), team work experience, and knowledge of import/export processes.

Java Developer to develop and maintain automated test suites, scripts, and CI/CD pipelines. Requires 4+ years of Java experience, Cucumber, Selenium, Jenkins, SQL, and script development.

Lighting Designer will develop lighting projects, provide technical support, and contribute to product development. Requires expertise in architectural lighting, proficiency in DIALux Evo, and the ability to translate architectural requirements into effective lighting solutions.

Lead complex technology transformation projects for financial institutions. Manage project plans, risks, and resources while ensuring delivery within budget and quality standards. Act as a trusted advisor to clients, managing expectations and facilitating executive-level communication. Contribute to business development and account growth within the Financial Services market.

Flutter Engineer to join mobile team in Aveiro, Portugal. Build the next major version of the miio app, used by 100,000+ active drivers. Develop Apple CarPlay & Android Auto integrations. 3+ years building production mobile apps with strong Flutter experience. Solid design patterns and CS fundamentals. Fluent Portuguese; comfortable working in English.

Senior Full Stack Engineer to develop and maintain backend and frontend components of a healthcare platform. Experience with C#/.NET Core, React, TypeScript, SQL Server, and API design required.

Lead and grow a team of frontend and mobile engineers, driving the architectural direction of the mobile app and web portal. Own and improve the app release process, championing engineering excellence and fostering a platform mindset.

Develop and maintain frontend applications using modern web technologies and frameworks. Collaborate with cross-functional teams to deliver high-quality software solutions. Participate in the entire software development lifecycle.

Develop, launch, and optimize paid social ads for Facebook and Instagram. Responsibilities include creative strategy, ad performance analysis, and Meta Ads Manager execution. Analyze performance data, track key metrics, and recommend creative improvements.

Production Planner Intern will collaborate with the logistics and supply chain team, optimizing stock levels and supporting the development of the production plan.

Outbound Call Sales Agent needed for the Italian market. Initiate calls with potential clients, present products and services, and drive sales. Fluent in Italian and English required. Prior sales or customer service experience preferred.

Provide French-language technical support via phone, chat, and email. Resolve customer issues, document case information, and ensure customer satisfaction. Collaborate with technicians and update ticketing systems in English.

Experienced AI-native Software Engineers needed for enterprise AI transformation projects. Build software, automations, and agentic workflows using AI-native development tools. Work directly with client teams to implement AI solutions.

Senior Marketing Manager will develop and execute integrated B2B campaigns, manage product positioning and messaging, and create thought leadership content. Requires 5-8 years of B2B marketing experience, strong content creation skills, and the ability to translate complex topics into commercially impactful initiatives.

Backend Engineer needed for a leading US trading platform serving 200,000+ daily users. Responsibilities include building and owning backend services, infrastructure, and data systems. Requires 3+ years of backend development experience, proficiency in Go or Python, and experience with Kafka. Strong understanding of system design principles and experience delivering large technical projects are also essential.