Kayzen

Kayzen is an ad-tech company that builds software to give marketers direct ownership of programmatic media buying. Its platform is designed to provide full transparency into campaigns and real control over customer data, rather than routing spend through intermediaries. The company operates in the advertising and marketing-technology sector, with a product aimed at in-house teams that want to run programmatic buying themselves.

The engineering behind it is substantial. The platform handles 2m requests per second at sub-millisecond latency, and manages petabytes of data across distributed systems. The technical work spans high-throughput, low-latency engineering, large-scale data processing and distributed systems, alongside the ad-tech domain itself.

Kayzen employs more than 70 people, referred to internally as Kayzenians, spread across Berlin, Bangalore and more than 10 locations worldwide. The team includes over 20 nationalities and works across time zones, with a culture that emphasises curiosity, collaboration and continuous learning. Transparency is a stated value both in the product and inside the company, alongside open communication, investment in employee growth and room for experimentation.