Lead Fullstack Software Engineer (Javascript - Barcelona)

About the role

We are: 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 global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there’s no limit to what we can achieve

Are you a fit? Sounds awesome, right? Now, let’s make sure you’re a good fit for the role:

Key Responsibilities

- 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.

- Build and promote reusable components and solutions that can be leveraged across multiple products and teams.

- 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.

- Provide technical guidance and independently drive solutions while seeking feedback when appropriate.

Must-have Skills

- 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.