Context
At Maxmilhas, I worked in a short and intense period on travel post-sale flows involving cancellations, rebooking, coupons, and customer communication.
How I worked
I built Node.js, NestJS, and Elixir microservices to automate processes that still depended on support intervention. I implemented eligibility, expiry, and accumulation rules for coupons, along with calculations and validations for cancellation and rebooking flows. Together, those automations reduced the need for manual intervention by 34%.
Another challenge was integrating a PHP 5.7 monolith, more than ten years old, with the commercial CRM without putting the operational core at risk. I also evolved flight monitoring, notifications, and proactive customer messages.
What I took from it
I learned to prioritize small, reversible interventions when outcomes need to arrive quickly. Instead of proposing a broad transformation, I focused on points that released operational work.