641 javascript English-speaking jobs in Portugal
JavaScript Security Engineer - Web Browser Vulnerabilities (Hybrid - Lisbon)
- Cognizant
- Lisbon
- April 30
JavaScript Security Engineer - Web Browser Vulnerabilities English Required / Based in Lisbon, Portugal ... / HybridWe are seeking a skilled JavaScript Security Engineer with a strong background in web technologies ... static and dynamic analysis techniques to detect security violations and malicious behavior.Perform JavaScript ... Angular, or jQuery.Strong code analysis, debugging, and reverse engineering skills, particularly in JavaScript ... improvement of security workflows and tooling.You Are Someone Who BringsStrong hands‐on experience with JavaScript
JavaScript Security Engineer - Web Browser Vulnerabilities (Hybrid - Lisbon)
- Cognizant Technology Solutions
- Portugal
- May 2
JavaScript Security Engineer - Web Browser Vulnerabilities English Required / Based in Lisbon, Portugal ... / HybridWe are seeking a skilled JavaScript and cyber‐security professional to analyze, reverse engineer ... as React, Angular, or jQuery.Strong code reverse engineering and debugging skills, particularly in JavaScript ... and maintain clear technical documentation.You are someone who bringsStrong hands‐on experience with JavaScript ... security violations and malicious behaviour.Perform code reverse engineering and debugging, primarily in JavaScript‐based
Javascript Developer
- Digital Waffle
- Portugal
- May 1
Senior Node.js Backend Developer to build and maintain scalable backend services and APIs. Collaborate with product and engineering teams to design new features and optimize services for performance, scalability, and reliability.
Fullstack .Net Developer
- bridge351
- Lisbon
- May 6
Required ExperienceAt least 2 years of experience in .NET.At least 3 years of experience in JavaScript ... SkillsExcellent knowledge of .NET 10 and .NET Framework (C#) server‐side programming.Excellent knowledge of JavaScript
Javascript Developer
- HumanIT
- Portugal
- May 7
Software developer to join a team building advanced platforms and services. Experience with Node.js, Express, MongoDB, and Redis is required.
Low-Code Automation Engineer - Freelance AI Trainer
- Mindrift
- Porto
- May 1
Mindrift is looking for skilledLow-Code Automation Engineers (Make.com / n8n, JavaScript)to join the ... professionals with hands‐on experience in low-code automation platforms, workflow architecture, and JavaScript-based ... workflows using low-code platforms (Make.com, n8n), APIs, webhooks, and event-based logicImplement custom JavaScript
Javascript / Typescript Developer
- Aubay Portugal
- Viana do Castelo
- May 7
Senior Backend Developer to build and maintain scalable backend services and APIs using Node.js, Express, MongoDB, and Redis. Collaborate with product and engineering teams to design new features and optimize for performance, scalability, and reliability.
Javascript Lead Developer
- Emergn
- Lisbon
- April 30
Lead Javascript Developer to collaborate on project scope, architecture, and delivery timelines. Conduct code reviews, enforce coding standards, and troubleshoot applications. Requires strong React knowledge, experience with Ruby on Rails, TypeScript, Redux, PostgreSQL, Docker, and OpenAI. Must have excellent English communication skills.
JavaScript / TypeScript Engineer (React)
- Evolution Gaming Limited
- Lisbon
- April 30
We are searching for passionate JavaScript / TypeScript engineers to take an integral part in building ... development, and improving yourself technically;Proven experience in delivering production software using JavaScript ... contemporary programming trends such as functional and reactive programming, CSS preprocessing, alternative JavaScript ... specifications libraries like Jest, Enzyme, Puppeteer/PlayWright, WebDriverIO, Cucumber, Mocha.Knowledge of JavaScript
Automation Tester
- Standout Tech
- Portugal
- May 4
testing.ResponsibilitiesDesign, implement, and maintain automated test frameworksDevelop test scripts using JavaScript ... improvementRequirementsSolid experience with automated testing frameworks and toolsStrong knowledge of JavaScript
Senior Frontend Software Engineer, Javascript
- PVComplete
- Porto
- April 23
Deep understanding of the browser and UI development in JavaScript Knowledge of REST API best practices ... You should be comfortable writing vanilla JavaScript, as well as using Angular, React, or a similar frontend ... Your primary code contribution will come in the form of frontend JavaScript code, with periodic contributions ... + years professional experience developing and delivering commercial software Expert level skill in JavaScript ... languages Knowledge of object‐oriented programming best practices and the ability to realize them in JavaScript
TIBCO Spotfire Senior Developer
- emagine
- Lisbon
- April 29
Develop and maintain advanced TIBCO Spotfire dashboards, data models, and integrations. Implement complex logic using Spotfire Expressions, IronPython, JavaScript, and the Spotfire SDK. Optimize reports for large data volumes.
Frontend Developer in Porto (m/f/d)
- mgm Germany
- Porto
- May 3
and TypescriptDevelopment for various devices and operating systemsWhat you should bringHTML, CSS, JavaScript
Technical Developer – Dynamics 365 Customer Service (JavaScript & CIF, Europe)
- Talent Connect
- Lisbon
- February 24
Angular Developer
- Adentis Portugal
- Coimbra
- May 1
Senior Frontend Developer to join our team in Lisbon. Develop and maintain web applications using ReactJS and NextJS. Implement responsive designs with HTML, CSS, TypeScript, and JavaScript.
Javascript AUTOMATION TESTER (QAE) (HYBRID @Porto)
- KCS iT
- Porto
- May 3
We are seeking a QA Automation Tester with 5+ years of experience in software testing and automation. The ideal candidate will have experience with Selenium, CI/CD pipelines, and version control systems like Git. Excellent problem-solving, communication, and teamwork skills are required. Proficiency in English is mandatory.
Fullstack Engineer
- Promptly Health
- Portugal
- May 7
, TypeScript, Node, Python, Django, Kafka Experience with frontend JavaScript libraries such as React ... job QualificationsProficient on the base Full-Stack development technologies, including HTML5/CSS3/JavaScript
Frontend Developer
- Landskill
- Portugal
- May 3
What we're looking for: Experience in JavaScript development Expertise in JavaScript frameworks (Angular
Javascript Senior Software Engineer (AI Apps)
- Tether.io
- Portugal
- May 1
. +6 years of experience working with Nodejs/JavaScript.
Angular Developer
- 99x
- Viseu
- May 6
develop and maintain web applications, implement responsive designs using HTML, CSS, TypeScript, and JavaScript















































