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 / Incentivos • 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 appropriate Responsabilidades • 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 environment Requisitos principales • High-Impact Environment • Commitment to Professional Development • Flexible and Collaborative Culture • Global Opportunities • Vibrant Community • Total Rewards

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