Experteer Overview In this role you will own multiple products end-to-end, building scalable web features and APIs while guiding a team. You will design and maintain React/JavaScript applications, GraphQL APIs on Node.Js, and cloud-based services on AWS. You'll drive architectural decisions, enforce engineering best practices, and collaborate with stakeholders to deliver impactful digital products.

This is a fast-paced, agile environment centered on growth, collaboration, and delivering AI-powered solutions at scale.Compensaciones / Beneficios - Take full technical ownership of multiple products, including feature development, improvements, and editorial support - Design, develop, and maintain scalable web apps with JavaScript, React, and Node.Js - Develop and maintain GraphQL APIs using Node.Js (NestJS a plus) - Design and optimize AWS-based cloud applications and services - Work with PostgreSQL and other databases for reliable data solutions - Lead and mentor junior developers with technical direction - Establish software engineering best practices: coding standards, reviews, Git, CI/CD, testing - Continuously optimize architecture, performance, scalability, maintainability,



and reliability - Build reusable components and solutions across products and teams - Collaborate with stakeholders to communicate solutions, identify risks, and drive projects - Work effectively in a fast-paced, agile environment meeting timelines - Provide technical guidance and drive solutions while seeking feedback when appropriateResponsabilidades - 5+ years architecting and building scalable web apps - Expert-level JavaScript with strong React experience - Extensive experience building GraphQL APIs with Node.Js - Strong AWS experience (S3, EC2, RDS, API Gateway, CloudFront, Lambda) - Deep knowledge of PostgreSQL and database tech - Proven CI/CD experience (GitHub Actions or Jenkins) - Strong understanding of software architecture, performance, maintainability - Experience with software engineering best practices (unit testing, code reviews, documentation) - Experience providing technical direction and mentoring - Strong communication and collaboration skills; ability to work with technical and non-technical stakeholders - Ability to work independently in a fast-paced agile environmentRequisitos principales - High-Impact Environment - Commitment to Professional Development - Flexible and Collaborative Culture - General Opportunities - Vibrant Community - Total Rewards

📌 Lead Fullstack Software Engineer (Javascript - Barcelona)
🏢 Wizeline
📍 Barcelona