Aleksandar Mladenovic

I’m an AI Engineer and Full-Stack Developer with over seven years of experience architecting autonomous digital commerce solutions, cross-platform mobile products, and integrated AI tools. I build robust web and mobile applications from a unified codebase, focusing on scalable features and high-availability architecture.

In my most recent role at Mercari, Inc, I architected scalable AI tools integrated into multi-channel commerce platforms, owning lifecycle features from design to deployment. I delivered reliable cross-platform updates using Expo and React, deployed transactional email services on GCP, and built semantic search using the OpenAI API with vector databases backed by Postgres. I also helped build secure multi-currency checkout logic and maintained high-frequency API endpoints handling millions of requests daily using TypeScript and GraphQL.

Earlier, at Shopping Gives and True Classic, I shipped native interactive experiences across web and mobile from single production codebases, created performant Go backend microservices, and built storefront and notification systems optimized for high-traffic environments. I’m energized by fully remote, product-focused teams where I can ship rapidly, collaborate across engineering groups, and turn evolving specifications into dependable software.