Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a general community of innovators, we foster a culture of growth, collaboration, and impact.

Take full technical ownership of multiple products, including building new features, implementing technical improvements, and providing support to editorial teams. Design, develop, and maintain scalable web applications using JavaScript , React , and Node.js . Develop and maintain GraphQL APIs using Node.js, with NestJS experience as a plus.

Design and optimize cloud-based applications and services using AWS . Work with PostgreSQL and other database technologies to build reliable and scalable data solutions. Lead and provide technical direction to a team of junior developers.

Establish and enforce software engineering best practices, including coding standards, code reviews, Git , CI/CD , and automated testing. Continuously optimize application architecture, performance, scalability, maintainability, and reliability. Collaborate with stakeholders and technical teams to communicate solutions, demonstrate work, identify risks, and drive projects forward.

Work effectively in a fast-paced, agile environment while meeting critical project timelines. 5+ years of experience architecting and building scalable web applications.



~ Expert-level JavaScript skills with strong experience developing applications using React . ~ Extensive experience building GraphQL APIs with Node.js . ~ Strong experience with AWS , including: ~ S3 ~ EC2 ~ RDS ~ API Gateway ~ CloudFront ~ Lambda In-depth knowledge of database technologies with hands-on experience using PostgreSQL . Real-world experience implementing and maintaining CI/CD pipelines using tools such as GitHub Actions or Jenkins . Strong understanding of software architecture, scalability, performance, and maintainability.

Experience with software engineering best practices, including unit testing, code reviews, Git, documentation, and coding standards .

Experience providing technical direction and mentoring junior developers. Ability to work independently, identify risks, and drive solutions in a fast-paced agile environment. Leverage one or more AI tools to optimize and augment day-to-day work, including coding, drafting, analysis, research, or process automation.

Experience with NestJS .

Experience building tools or platforms used by editorial, content, or newsroom teams.

Experience designing highly scalable and high-performance web applications. Strong understanding of cloud-native and distributed application architectures.

Experience optimizing application performance, reliability, and maintainability. Commitment to Professional Development Global Opportunities

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