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JavaScript Developer Portugal Jobs

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Software Developer – API System Integration with CCW
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Portugal
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Concentrix
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Full stack Developer
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Portugal , Porto
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We Are Meta
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Tech Lead
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Portugal , Porto
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Salesforce Marketing Cloud Developer
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Portugal , Coimbra
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360 Resourcing Solutions
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FullStack Developer w/French (Java & Angular)
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Portugal , Porto
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Java Developer
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Portugal , Lisbon
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FullStack Developer
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Portugal , Porto
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Software Engineering Internship 2026
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Portugal , Lisbon
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Tripadvisor
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API Gateway Specialist
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Portugal , Porto
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FullStack Developer w/French (Java & Angular)
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Portugal , Porto
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We Are Meta
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Java Developer
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Portugal , Lisbon
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Engineering Manager - Core Features
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Portugal , Lisbon
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Dashlane
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Java Senior Developer
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Portugal , Porto
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Inetum
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Java Developer (fullstack)
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Portugal , Lisboa
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Fyld
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Explore the dynamic world of JavaScript Developer jobs, where professionals build the interactive and data-driven experiences that power the modern web and desktop. A JavaScript Developer is a specialized software engineer who leverages the JavaScript programming language and its vast ecosystem to create, maintain, and optimize applications. This role is central to web development, but its scope has expanded dramatically to include server-side programming, mobile apps, and even desktop software, making it one of the most versatile and in-demand tech professions. Professionals in this field are typically responsible for the entire lifecycle of application features. This includes writing clean, efficient, and maintainable code; debugging and troubleshooting complex issues; and collaborating with cross-functional teams like designers, product managers, and other engineers. On the front-end, a JavaScript Developer uses frameworks like React, Angular, or Vue.js to construct responsive and engaging user interfaces. They ensure that web applications are performant, accessible, and provide a seamless user experience across different browsers and devices. On the back-end, they often work with Node.js to build server-side logic, manage APIs, handle database interactions, and implement authentication and authorization systems. For those in full-stack JavaScript Developer jobs, the work involves a blend of both front-end and back-end responsibilities, creating end-to-end solutions. The technical skill set required for these jobs is comprehensive. A strong foundation in core JavaScript (including ES6+ features like promises, async/await, and modules) is non-negotiable. Proficiency in at least one major front-end framework, typically React, is a standard expectation. Experience with Node.js, along with related tools like Express.js, is highly valuable, especially for full-stack roles. Developers must be familiar with version control systems like Git, package managers like npm or yarn, and build tools like Webpack. An understanding of databases, both SQL (e.g., PostgreSQL) and NoSQL (e.g., MongoDB), is also common. Increasingly, knowledge of TypeScript is becoming a sought-after asset for building large-scale, robust applications. Beyond technical prowess, successful candidates for JavaScript Developer jobs possess strong problem-solving abilities, analytical thinking, and meticulous attention to detail. They must be able to translate business requirements into technical specifications and effectively communicate with both technical and non-technical stakeholders. A passion for continuous learning is crucial, as the JavaScript landscape evolves rapidly with new tools, libraries, and best practices emerging constantly. Whether you are a front-end specialist, a back-end expert, or a versatile full-stack developer, a career in JavaScript development offers a challenging and rewarding path with a multitude of opportunities to shape the digital world.

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