Smadex SLU

Build and scale high-performing interactive playable ads for mobile and CTV advertisers, combining frontend development, game mechanics, UX, testing, and performance measurement. The role connects creative, product, engineering, and client teams to improve iteration speed and delivery reliability.

Lead Smadex’s AI investment strategy while building production-grade agents, integrations, and automated workflows. This foundational Barcelona-based role combines hands-on AI engineering, ROI analysis, and operational strategy.

Join Smadex’s core engineering team to build and evolve a high-throughput real-time bidding platform processing millions of ad requests per second. This senior backend role combines Java and Node.js development with feature ownership, production operations, and architectural contribution.

Join Smadex’s core engineering team to build and operate high-performance real-time bidding systems processing millions of ad requests per second. You’ll own features across a Java and Node.js platform while contributing to architecture, reliability, and continuous improvement.

Build and deploy large-scale machine learning solutions for Smadex’s real-time bidding advertising platform, optimizing ad selection and bid pricing across millions of opportunities per second. The role combines predictive modeling, statistical experimentation, data analysis, and production engineering.

Build and deploy machine-learning solutions that optimize real-time bidding across millions of ad opportunities per second. This end-to-end role combines predictive modeling, statistical analysis, and production engineering to improve advertiser return on ad spend.

Build and evolve the backend platform supporting Smadex’s high-volume real-time bidding ecosystem, with a focus on scalable Node.js services and data integrity. You’ll also help integrate agentic AI using LangChain and AWS Bedrock in a hybrid Barcelona-based role.

Senior Machine Learning/Staff Engineer responsible for advancing Smadex’s deep neural network algorithms, scalable data pipelines, and production machine learning solutions. The role combines machine learning research, data engineering, analytics, and technical leadership in a high-growth mobile advertising platform.