Evolution of Engineering at Infobip

Infobip started with a small market in Croatia but realized they could do business worldwide, resulting in massive revenue growth. The company initially ran a monolith on a single server, but now operates a hybrid cloud containerized infrastructure with thousands of databases. Challenges included manual deployments, dependency management, and system stability. As they scaled, Infobip extracted independent functionalities into separate services, improving development speed, deployment, and isolation. They developed their own RPC library using JSON over HTTP for inter-service communication. Infobip also created their own service registry and implemented canary deployments to ensure reliability. Their biggest engineering challenge revolved around designing systems for multi-data center setups and architecting for failures at various layers of the infrastructure.