Senior Full-Stack Developer Amsterdam

Promptwatch is building the leading GEO platform, helping businesses optimize their visibility across ChatGPT, Claude, Perplexity, and Google AI. We handle millions of clicks, citations, and visits per day - processing real-time data streams, tracking AI search patterns across 5,500+ websites, and synthesizing insights that drive decisions for thousands of companies. The technical challenges are real: ingesting and analyzing terabytes of log data, building distributed systems that prompt AI models millions of times daily, and creating real-time analytics pipelines that turn massive datasets into actionable intelligence within seconds.

As a Full-Stack Developer, you'll own entire features from database design to frontend interfaces. Ship code to production within hours, impacting thousands of businesses immediately. Work directly with the founding team to transform complex AI search data into intuitive user experiences. You'll have autonomy to choose your tools and define technical standards while solving real challenges: handling massive data volumes, building reliable distributed systems, and creating interfaces that make complex data actionable. If you thrive on optimizing performance at scale and want to see immediate impact from your work, you'll fit right in.