158 react English-speaking jobs in Barcelona

distributed apps Test Driven Development and functional testing Proficiency in at least one OOP language and React

Deep expertise in TypeScript and React . ... Solid testing practices using tools like Vitest , React Testing Library , and Playwright .

Develop, test, and version-control advanced prompts, Few-shot, Chain-of-Thought, ReAct. ... Experience with prompt engineering and optimization, including Few-shot, Chain-of-Thought, and ReAct.

Develop, test, and version-control advanced prompts, Few-shot, Chain-of-Thought, ReAct. ... Experience with prompt engineering and optimization, including Few-shot, Chain-of-Thought, and ReAct.

Direct experience with TypeScript and React.

Requirements Our stack TypeScript and React on the front end, Postgres and Supabase behind it, Next.js ... Two things we do gate on: strong TypeScript and React fundamentals, and having written and shipped real

integrations, automation, and AI-enabled capabilities , using technologies such as Python, TypeScript, React ... engineering and end-to-end product development Strong proficiency in Python Hands-on experience with React

Strong TypeScript and React. You build what you argue for, so the building has to be real. ... TypeScript and React across the product surface, plus the backend work a feature needs to actually exist

TypeScript/Node.js with React on the front end.

Deep technical mastery of React, Next.js (App Router), TypeScript, and Node.js.

Deep technical mastery of React, Next.js (App Router), TypeScript, and Node.js.

Experience or exposure to modern front-end technologies, especially React, and integration with backend

Cross-functional collaboration Accountability and delivery orientation Conversations with multi-turn agents, ReAct

and integrate AI into workflow Collaborate across the stack, including frontend collaboration with React

. 🧩 The Role We're looking for a Staff/Senior React Native Engineer to help us boost the company to

Responsibilities Develop our travel-focused web product using Python/Django and/or React.

Full-Stack Development – Utilize React, TypeScript, Node.js, and Python to develop robust applications

That said, strong Ruby on Rails experience on the backend and solid React or TypeScript on the frontend

Responsibilities Lead a team of Ruby on Rails/React/Native app developers, providing technical guidance

making and teamwork Full-stack development API design (REST/GraphQL) Experience with Ruby on Rails and React