Donovan Ratefison
Freelance full stack developer. Critical systems and AI integration.
I design and build business applications: Java back end, Vue.js or Next.js front end, AI integration. I mostly work on systems where an error is costly: telecom, banking, health, payroll.
Before I became a developer, I operated production platforms for five years. It left me with one habit: think of the person who will maintain the system.