Smadex is a cutting-edge ad-tech company processing more than 4.5 million ad requests per second with response times under 100ms. While our real-time bidding systems handle the traffic, our team builds the core platform that powers them .
We are responsible for the web ecosystem that ensures data integrity and campaign solidity. Without our platform, the real-time engines wouldn't have the high-quality data they need to perform. We are now evolving this ecosystem by integrating Agentic AI to automate processes and maintain our competitive edge.
This is a full-time position (40 hours per week) with a hybrid working model based in Barcelona.
The Challenges You Will Tackle
- Agentic AI Integration: Help us implement AI agents and automation using LangChain and AWS Bedrock to keep our product at the cutting edge of the industry.
- Solid Backend Foundations: While we use Angular, our heart is in the backend. You’ll be building scalable services with Node.js.
- Cloud & Security: You will learn to manage and protect infrastructure using AWS WAF and CloudFront ,



ensuring our users' data is always safe.
- End-to-end Ownership: You’ll be involved in the full lifecycle, from architectural discussions to deployment.

What We Are Looking For
- Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent experience (or last year studying).
- You're available to work full-time (40 hours per week).
- Experience in professional software development (ideally with Node.js or Angular).
- The "Whole Picture" Mindset: You understand how a modern web application works end-to-end. You know what happens between a user click and a database query.
- Technical Literacy:
- If you lean Frontend : Deep knowledge of Angular/TypeScript and a solid grasp of how to interact with RESTful APIs efficiently.
- If you lean Backend : Strong Node.js skills and a focus on scalability, security, and data integrity.
- Regardless of your "side," you write clean, testable code and care a

📌 Software Engineer (España)
🏢 Smadex Slu
📍 España