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 about performance and security (AWS S3/WAF/CloudFront). * **Problem\-solving DNA:** You don't just wait for instructions; you investigate, ask "why," and propose solutions. * **Curiosity for AI:** You’ve experimented with (or are eager to master) LLMs and AI orchestration tools. * **Familiarity with Git flows** and basic clean code principles. * **English:** Good reading and writing skills (technical documentation is in English). * **Bonus points:** + Basic Linux skills and comfort working with a terminal. + Experience with Angular **or** Node.js. Don't worry, you'll learn everything else you need! + Experience with AWS (EC2, S3, WAF, Cloudfront, Elasticache, Route53, RDS, Bedrock…) **Don't check every box? We encourage you to apply anyway!** We are looking for potential, curiosity, and a growth mindset. If you don’t have experience with every tool in our stack but you are a quick learner and a great problem\-solver, we want to hear from you. Your ability to adapt and grow is more important to us than your current toolkit. **Please note: We do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain will not be considered.** **Our Tech Stack** * Main languages: Angular, NodeJS * Databases: MySQL, Memcached * Cloud \& DevOps: AWS, Jenkins, Docker, Kubernetes * Tools: Git, Jira, Notion * Monitoring: Grafana, Kibana, AWS tools **What We Offer** * Join a highly motivated and talented team in a fun and friendly work environment * Great compensation package * Top location at the heart of Barcelona with a rooftop terrace, Barbeque, and a fully stocked fridge * Great work\-life balance: work from home (2 days per week) and flexible hours * Meal vouchers \- Ticket Restaurant monthly allowance * Private Health Insurance * Monthly gym allowance * Professional development with a LinkedIn Learning subscription and other training opportunities * Monthly TGIF events and regular team\-building activities * Ping\-pong table and arcade machine * And more! If you want to know more about us visit our website Smadex.com, and for a sneak peek of the cool stuff we build check this video out! 2EI7eyMwSq