Senior Frontend Engineer - 100% Remote (Castro Urdiales)
Location
castro urdiales, cantabria
Job Type
Full-time
Category
Other-General
Posted
June 18, 2026
About UST
UST is a multinational company based in North America, certified as a Top Employer and a Great Place to Work. We have over 35,000 employees worldwide and a presence in more than 35 countries, leading in digital technology services for large-scale technological solutions.
Position
Senior Frontend Engineer with experience in modern frameworks such as React, Vue, or Angular.
Responsibilities
- Lead the development of Progressive Web Applications (PWAs) for complex digital environments.
- Design and architect scalable, high‑performance PWA solutions for eCommerce platforms.
- Implement advanced Service Worker strategies, including intelligent caching, offline capabilities, and performance optimisation.
- Develop responsive, mobile‑first user interfaces using modern frameworks such as React, Angular, or Vue.js.
- Integrate PWA frontends with backend APIs and enterprise platforms such as Salesforce Commer...