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.

Julio Cesar Gaviria J

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.

Available to hire

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.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Beginner
Beginner
Beginner
Beginner
Beginner
Beginner
Beginner
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Language

English
Advanced
Spanish; Castilian
Fluent
Portuguese
Beginner

Work Experience

Blockchain & Mobile Dev at Impulse
January 1, 2026 - Present
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.
Flutter Mobile Developer at Pitts Crew SAS
January 1, 2022 - Present
Designed and developed a dynamic vehicle-issue bidding system with multimedia submissions; implemented real-time updates via WebSockets; freelanced to fix legacy codebase, migrate to Stacked architecture, and deliver onboarding, OTP login, and signup verification.
Flutter Mobile Developer at Digital Platforms
January 1, 2022 - October 1, 2025
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.
Flutter Mobile Developer at Freelancer - Remote, France
January 1, 2022 - January 31, 2022
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.
Flutter Mobile Developer at Valienta SAS
January 1, 2021 - January 31, 2021
Joined as a Junior Developer; delivered features related to payments, user selection flows, delivery timelines; integrated push notifications using Firebase and CleverTap; resolved bugs; contributed to improving app performance and usability; strengthened Flutter expertise.

Education

Systems Engineering at Icesi University
March 1, 2021 - February 4, 2026
DAO Project - Solidity at Blockchain Accelerator Courses
January 11, 2030 - February 4, 2026
Yield Farming Smart Contract — Solidity at Blockchain Accelerator Courses
January 11, 2030 - February 4, 2026
Token Presale Smart Contract — Solidity at Blockchain Accelerator Courses
January 11, 2030 - February 4, 2026
Microsoft Certified: Azure Fundamentals at Microsoft
January 11, 2030 - February 4, 2026

Qualifications

Microsoft Certified: Azure Fundamentals
January 11, 2030 - February 4, 2026
DAO Project - Solidity (Blockchain Accelerator)
January 11, 2030 - February 4, 2026
Yield Farming Smart Contract — Solidity (Blockchain Accelerator)
January 11, 2030 - February 4, 2026
Token Presale Smart Contract — Solidity (Blockchain Accelerator)
January 11, 2030 - February 4, 2026
Flutter: Tu guía completa de desarrollo para IOS y ANDROID
January 11, 2030 - February 4, 2026

Industry Experience

Software & Internet, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Beginner
Beginner
Beginner
Beginner
Beginner
Beginner
Beginner
See more