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Lead Fullstack Software Engineer (Javascript Barcelona)

Wizeline


Job Location:

Barcelona - Spain

Monthly Salary: Not provided by the employer
Posted: 29 September 2026 (2 days ago)
Application Deadline: 27 December 2026
Vacancies: 1 Vacancy

Job Summary

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 theres no limit to what we can achieve

Are you a fit
Sounds awesome right Now lets make sure youre 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 .
  • Develop and maintain GraphQL APIs using 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 .
  • 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.


Required Experience:

IC


About Company

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Wizeline is a global technology services company founded in Mexico, now partnering with clients worldwide to accelerate their digital agendas. We combine a boutique approach with enterprise-scale delivery to modernize infrastructure, engineer data-driven solutions, and integrate cutti ... View more

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