629 javascript English-speaking jobs in Portugal
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
- 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.
Senior Fullstack Developer (Node.Js + React)
- Trinetix
- Portugal
- May 2
We are seeking a passionate and skilledFull-Stack JavaScript Developerto join our team. ... efficient, and user-friendly applications.Requirements5 years of professional experience as a Full-Stack JavaScript
Retail & E-Commerce | Senior Frontend Developer
- Devoteam Portugal
- Porto
- May 11
Fullstack .Net Developer
- bridge351
- Portugal
- 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 Lead Developer
- Emergn
- Portugal
- May 2
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.
Full-Stack Developer - PHP/Laravel + Vue.js (m/f/x)
- Randstad II - Prestação de Serviços, Limitada
- Aveiro
- May 10
experience in building scalable distributed production software;Hands‐on programming experience in PHP and Javascript ... mandatory.competênciasDevelop high-performance, scalable, and reliable software applications using the PHP (Laravel) and Javascript
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
Low-Code Automation Engineer - Freelance AI Trainer
- Mindrift
- Lisbon
- April 17
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 Senior Software Engineer (AI Apps)
- Tether.io
- Lisbon
- April 29
. +6 years of experience working with Nodejs/JavaScript.
Full-Stack Developer (PHP & JavaScript)
- InnoTech
- Lisbon
- May 3
Full-Stack Developer to build scalable features for an application marketplace, including dashboards, APIs, and user-facing components. Collaborate with teams to translate requirements into high-quality deliverables. Ensure code quality through testing, reviews, and adherence to best practices.
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.
Salesforce Developer - Portugal - 08/05/26
- Ibrowse
- Portugal
- May 13
Stripe.Technical Skills- Programming Languages: Apex (Salesforce proprietary language for backend logic), JavaScript
Full Stack Developer - Symfony And Javascript | Permanent Contract
- Rise Up
- Portugal
- May 7
Full Stack Developer (50% Front End – 50% Back End) needed for hybrid projects. Requires 3+ years experience in software development with Java (Backend) and React/Redux/ES6/LESS (Frontend). Must have experience with PostgreSQL/SQL Server, Elasticsearch, Git, K8S, Teamcity, Octopus Deploy, Docker, and Kubernetes. Fluent English required.
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
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
Software Engineer – Mid Java Fullstack
- GRiT Solutions
- Lisbon
- May 3
The ideal candidate will have a strong background in Java and client-side JavaScript frameworks such ... Qualifications: 3+ years of professional software development experience using Java Experience with client-side JavaScript
Full Stack Developer - Mosano
- Mosano
- Porto
- May 1
Developer; Strong proficiency in JavaScript and TypeScript; Solid experience with React (and optionally ... ResponsibilitiesDevelop and maintain scalable web applications using JavaScript/TypeScript; Build responsive ... Troubleshoot, debug, and optimize application performance; Ideal Profile3+ years of experience as a Fullstack JavaScript
Full-stack Developer
- MobilityNow - Connecting Worlds Securely
- Lisbon
- May 4
Do you have experience with Python/Django or Java and Javascript? ... Qualifications5+ years of experience and deep knowledge on Java or Python Experience in Javascript development


































