Julio Cesar Gaviria J
Systems Engineer specialized in Blockchain and Mobile development. Passionate about building high-quality products and constantly improving through autonomous learning.
About
Systems Engineer specialized in Blockchain and Mobile development. Passionate about building high-quality products and constantly
improving through autonomous learning. Strong communicator with proven skills in initiative, leadership, responsibility, discipline,
teamwork, and critical thinking. Able to perform efficient technical research, adapt quickly to new technologies, and thrive within cross-
functional teams to deliver impactful solutions.
- 4 years' experience
- Joined February 2026
Skills· 15
Languages
- EnglishAdvanced
- Spanish; CastilianFluent
- PortugueseBeginner
Industry experience
- Software & Internet
- Professional Services
Work experience· 5 roles
Design and implement Solidity smart contracts using Foundry; deploy to testnet; fork Polygon and BSC networks; develop a Flutter app with Bloc; integrate REOWN for contract calls and Metamask-like connections; deploy to Polygon; verify contract and upload ABI; configure networks with Firebase Remote Config; launch Android app.
Developed new features for two high-traffic mobile apps (Undiz and ETAM); fixed critical bugs; implemented dynamic retrieval of store/product data; improved UX/UI across home, cart, shops, onboarding, and payments; built reusable UI components; integrated PWA event handlers, geolocation, saved stores, and QR code scanning.
Developed a full Flutter Web FAQ module; migrated Pibox passengers/drivers to Stacked architecture; refactored Mapbox flows with custom animations; built fleet management features; created a lightweight app variant for low-end devices; contributed to ~30 internal projects.
Education· 5
Certifications and awards· 5
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