We offer
you the opportunity to join the leading Spanish company in the IT sector, with more than 25 years of experience and one of the most solid track records as a provider of technological solutions for companies. We are a growing company with more than 400 employees and offices in Logroño, Madrid, Barcelona, Seville and Valencia. Since August 2013, we have been part of the IONOS Group, Europe's leading digitalisation partner for small and medium-sized companies. In short, we are a multicultural team that's passionate about technology, bringing our professional experience from over a dozen countries: The Mission You will own the JavaScript layer in EuroOffice, setting the bar for code architecture, loading and rendering performance, and deep bug investigation. In this role, AI is not a separate specialty, but a core working method woven into how you build, debug, and refine software. Coding Excellence: Write and review clean, well-architected JavaScript/TypeScript with sound state management, creating code that both engineers and AI models can easily reason about. Rendering & Loading Performance: Identify and fix performance bottlenecks (TTI, load time,



unnecessary re-renders, bundle bloat) across DOM and Canvas surfaces. Expertise in Modern JS/TS: High standards for code quality, architectural integrity, and browser performance (rendering pipeline, profiling via DevTools/Lighthouse). English Fluency: English domain for daily technical communication and team collaboration. Fixed salary and versátil benefits such as health insurance, daycare allowance, and meal vouchers. Flexible

working hours
to organize your schedule according to your needs. Ability to work hybrid in any of our offices located in Logroño, Madrid, Barcelona, Seville or Valencia. Personalized training in cutting-edge technologies, certifications, or any area that interests you. At Arsys we value diversity and welcome all applications regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age, as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law. #

📌 Frontend Developer with English, hibrido (España)
🏢 Arsys
📍 España