Wizeline, a integral 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
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.
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.
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

📌 Lead Fullstack Engineer (Madrid)
🏢 Wizeline
📍 Madrid