Smadex is a cutting-edge ad-tech company: we process more than 4,5 million ad requests per second , replying under 100ms (for reference, the Google search engine handles ~76,000 QPS). Every day we generate several TBs of data that need to be processed, analyzed and aggregated, so our real-time components get smarter every day. If you are ready to boost your professional career in the tech world, this is your opportunity.
You will join our core engineering team, a collaborative group of 8 experienced engineers responsible for maintaining and evolving the real-time bidding (Open-RTB) auction system that powers our entire business. We're looking for a knowledgeable Software Engineer who is excited by complex technical challenges. Your success will be measured by your ability to deliver high-quality features , collaborate with the team, while sharing and applying your knowledge effectively.
You will dive into a dynamic environment, tackling short-cycle tasks across the core platform following a "you build it, you run it" philosophy. Design, develop,



and implement new features for core products using NodeJS and Java.
Quality Assurance : Write clean, efficient, testable code and thoroughly test work locally and in a sophisticated staging environment.
Operational Excellence : Monitor deployments and help ensure the stability, reliability and performance of production systems.
Agile Collaboration : Collaborate with the team in an agile environment, participating in planning and reporting on progress.
A Bachelor's degree in Computer Science or a related technical field.
~2-4 years of experience in a software engineering role.
~ Hands-on experience with Java or NodeJS.
~ A solid theoretical foundation in data structures, algorithms, and software design principles.
~ Excellent communication skills in English (written and spoken).
~ Proficiency with Linux, Git, Docker, and Docker-Compose.
~ Experience with testing tools and modern CI/CD frameworks.

Experience with Key-Value st

📌 Senior Software Engineer (España)
🏢 Smadex
📍 España