Senior Frontend Developer

Description

**Senior Frontend Engineer \| Web Architecture \& Microfrontends** ------------------------------------------------------------------ At Initium Software, we connect top technical talent with the most challenging and innovative projects in the market. We are not a traditional consultancy; we are strategic partners who believe in real impact through technology. We are seeking a Senior Frontend Developer to lead the implementation of modern, robust, and scalable frontend architectures in a high-performance international environment. ### **YOUR CHALLENGES AND RESPONSIBILITIES** * + Design and build scalable frontend applications using advanced architecture patterns and microfrontend strategies. + Ensure maximum software quality by defining and executing unit, integration, E2E, visual, and accessibility tests. + Optimize packaging workflows, dependencies, and build tools using Webpack, Rollup, and Node CLIs. + Collaborate closely with multidisciplinary and international teams, ensuring best development practices and continuous delivery. + Drive continuous technical improvement and coding excellence within an agile environment. * ### **WHAT WE LOOK FOR IN YOU** * + More than 5 years of solid frontend development experience with advanced JavaScript (ES5/ES6\), HTML5, and CSS3\. + Proven experience designing frontend patterns and microfrontend-based architectures. + Proficiency in unit and component testing (Karma, Jasmine, Mocha, Chai, Sinon) as well as E2E and visual testing (Playwright, Selenium, WebdriverIO). + Advanced knowledge of integration tools, package management, and bundling (Yarn, NPM, Rollup, Webpack). + Version control with Git and consumption of REST/JSON APIs. + Advanced English level (C1\), with fluent technical and professional communication skills. + Residency in Spain and valid work permit. * ### **WE ESPECIALLY VALUE IF YOU ALSO HAVE:** * + Experience with TypeScript and modern frontend frameworks (Angular, ReactJS, Vue, or Lit-Element/Polymer). + Knowledge of Azure DevOps, Docker, or backend fundamentals with Java/Spring. + Practical experience with TDD (Test Driven Development) and Contract Testing. + Passion for learning, sharing ideas, and evolving alongside the team. * ### **HOW WE WILL MEASURE YOUR IMPACT** * + Monthly achievement of project efficiency objectives. + Effective alignment and execution of the strategic plan. * ### **WHAT WE OFFER YOU** * + Competitive salary range: aligned with your experience and competencies. + 100% remote work within Spain with flexible working hours (standard schedule: 09:00–18:00\). + Large-scale, challenging projects with global visibility and real technical impact. + A culture built on transparency, autonomy, technical excellence, and continuous growth. At Initium, we don’t just develop technology—we create an environment where people can evolve, deliver value, and leave their mark. Apply now and let’s talk.