(Buen Salario) Senior Frontend Engineer (Next.Js / React)

About LearnWise AIWe’re an AI-first scale up helping universities and colleges support students and faculty with smart, knowledge-driven tools from AI tutoring to feedback and support. Small team, high ownership, real user impact.Why this role existsWe need a senior who can take product ideas from Figma to fast, accessible, production apps on Vercel - and lead the craft on performance, and accessibility.What you will do : - Ship high-quality frontend apps in Next.Js, React and TypeScript (App Router & Page Router, SSR / SSG / ISR, middleware, edge patterns).- Translate Figma designs into responsive, accessible UI; iterate quickly with design & product.- Champion accessibility to WCAG 2.2 AA across components and flows.- Own performance : optimize data loading / streaming, reduce bundle size, profile the JS event loop and async flows.- Keep dependencies lean and healthy; document decisions; raise the bar through reviews.- Deploy, preview, and monitor apps on Vercel (analytics, error tracking, observability).You will do great here if you have : - 8+ years building production frontends.- Deep Next.Js knowledge (App vs Page routes) and strong React + modern TypeScript / JavaScript fundamentals.- Mastery of the browser runtime : event loop, promises, concurrency, streaming.- Proven track record shipping accessible UI to WCAG 2.2 AA.- Professional fluency in English (written & spoken).- Bias to action, comfort with ambiguity, and love for startup pace.Nice to have : - Built streaming UIs, chat experiences, or AI-powered apps (real-time, RAG, agents).- Experience with design systems, motion / interaction details, and component libraries.- Tooling for performance & observability (Web Vitals, Lighthouse, bundle analysis).How we work : - Default to open : write things down, share context early.- Small team, big ownership : you’ll own projects end-to-end.- Measure >

guess : we ship, we instrument, we learn.- Quality and speed : we don’t choose—we engineer for both.Location : - Remote is OK; EU is a must-have.- Prefer Barcelona, Spain or Amsterdam, Netherlands if you want hybrid / office.Compensation- Salary : competitive (location-adjusted).- Flexible time off, home-office budget, and learning stipend.If you are passionate about creating intuitive, engaging user interfaces, interested in working for a startup, and excited about the opportunity to work on innovative AI projects that make an impact for students just like you, we would love to hear from you!To fast-track your application, please visit https : / / join.Learnwise.Ai / Senior-Frontend-Engineer-Next-js-React-2856fdcbf21080dabcd1f74db161f635 and complete the form on this page.