Front-End Developer (React/Next.js) – EnergyTech

About the role

We are looking for a passionate Front‑End Developer to shape the user experience of our EnergyTech SaaS platform. You will translate complex energy logic into clean, scalable interfaces while working in a remote‑first, collaborative environment.

Key responsibilities

• Optimize front‑end performance and resolve bugs.
• Develop new features and iterative improvements on an existing SaaS platform.
• Continuously refactor code to improve quality and maintainability.
• Integrate front‑end applications with external APIs and AWS services.
• Build reusable UI components and shared libraries.
• Participate in code reviews and maintain technical documentation.
• Collaborate closely with Product, Backend, and Customer Experience teams.
• Take ownership of features and communicate progress in an international setting.

Required profile

• 3+ years of experience with React.
• 2+ years of production experience with Next.js (App Router preferred).
• 2+ years of experience with TypeScript.
• Experience working in monorepos or large‑scale applications.
• Knowledge of authentication systems, user flows, and design systems.
• Advanced English communication skills (mandatory) and Spanish.
• Team‑oriented, proactive, and comfortable taking ownership.

Required skills

• React
• Next.js
• TypeScript
• tRPC
• TanStack Query
• React Hook Form + Zod
• Turborepo & pnpm workspaces
• Docker
• AWS services (Cognito, Lambda, App Runner)
• Jest & React Testing Library
• Internationalization (i18n)
• Web accessibility standards (WCAG)

What we offer

• Salary range: €32,000 – €40,000 per year.
• Remote‑first culture with optional hybrid offices in Madrid or Barcelona.
• High‑impact role in a fast‑growing EnergyTech company.
• Real ownership and influence over product and technical decisions.
• Collaborative, low‑ego engineering culture focused on meaningful energy solutions.