Lead Fullstack Software Engineer (Javascript - Barcelona)

WizelineBarcelona, CataloniaOn-siteFull-timeSenior, 5–8 yearsListed 21 hours ago

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About this 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.

- Strong communication and collaboration skills, with the ability to work effectively with technical and non-technical stakeholders.

- Ability to work independently, identify risks, and drive solutions in a fast-paced agile environment.

Nice-to-have:

- AI Tooling Proficiency: Leverage one or more AI tools to optimize and augment day-to-day work, including coding, drafting, analysis, research, or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.

- Experience with NestJS .

- Experience building reusable components, shared libraries, or platforms following an open-source mentality.

- Experience working in the media and publishing industry .

- 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.

- Experience working with multiple engineering teams and driving technical standards across teams.

What we offer:

- A High-Impact Environment

- Commitment to Professional Development

- Flexible and Collaborative Culture

- Global Opportunities

- Vibrant Community

- Total Rewards

*Specific benefits are determined by the employment type and location.

Find out more about our culture here .