52 javascript English-speaking jobs in Madrid

Strong proficiency in JavaScript, TypeScript, React, or vanilla JS.

produce clear reports with optimization recommendations; Review performance and monitoring code in Java, JavaScript ... testing or performance engineering roles; Proficiency in Playwright (Java, TypeScript) and Grafana k6 (JavaScript

Review performance and monitoring code in Java, JavaScript or TypeScript for compliance with standards ... Proficiency in Playwright (Java, TypeScript) and Grafana k6 (JavaScript) for performance automation.

Responsibilities: Develop and maintain front-end applications using React.js, JavaScript/TypeScript, ... practices in development and testing Requirements: Frontend Development: React.js, Redux, TypeScript, JavaScript

Develop and maintain web interfaces using HTML5, CSS3, JavaScript, jQuery, and AJAX. ... Solid knowledge of HTML5, CSS3, and JavaScript. Experience with jQuery, AJAX, and the Dojo toolkit.

with a strong entrepreneurial spirit Proven frontend engineering experience with a focus on React, JavaScript ... architectures, responsive design, and performance optimization Our Frontend Stack: React, Angular, JavaScript

Required Skills Python React JavaScript Java Node.js Rust Go TypeScript Strong full-stack development

This is an opportunity for a developer with strong JavaScript, TypeScript, and React experience, a good ... Lead and contribute to the development of modern, responsive, and maintainable user interfaces using JavaScript ... software development experience, with strong hands-on experience in modern frontend development using JavaScript

Familiarity with HTML, CSS, and JavaScript / TypeScript. Understanding of data modelling.

one or more CIS certifications (CIS-ITSM, CIS-ITAM, CIS-SIR) — desired Strong scripting knowledge in JavaScript ... Provide 2nd and 3rd level ServiceNow support, resolving incidents, enhancements, and defects using JavaScript

RAG and agent evaluation REST APIs, MCP and integrations with external systems Forge development with JavaScript

This is an opportunity for a developer with strong JavaScript, TypeScript, and React experience, a good ... Lead and contribute to the development of modern, responsive, and maintainable user interfaces using JavaScript ... software development experience, with strong hands-on experience in modern frontend development using JavaScript

Knowledge of further languages such as Java or JavaScript is beneficial. ... Proficiency in in software development languages such as Python, SQL Queries and further languages like Java, JavaScript

We will value very positively skills related to: Software programming (Java,Javascript, Angular)Machine

(at least 3 years of experience)- Strong commercial experience with React, TypeScript, JavaScript- Familiarity

experienced Full-Stack Software Engineers with a strong background in: Programming Languages: Java, JavaScript

tracking in Linear (or Jira), with crisp repro steps and evidence Scripting ability in TypeScript, JavaScript

Strong JavaScript knowledge, with the ability to read, modify, and validate production advertising tags ... You are comfortable working across JavaScript, browser behavior, programmatic infrastructure, and publisher

Frontend Expertise: High technical proficiency in HTML, CSS, and JavaScript (DOM manipulation).

Technical Requirements Frontend: Angular, TypeScript/JavaScript, NodeJS, JQuery (Ionic is a plus).