01 — About
WHO AM I
javier@portfolio:~ ● READY
02 - Experience
WHERE I'VE WORKED
Junior Software Developer
RunaID IT Consulting Services
Full-Time · San Luis, Argentina
Flutter Dart Firebase REST APIs Agile/Jira
Responsibilities
- ▸ Delivered new features for DOSEP San Luis (50,000+ downloads) using Flutter/Dart.
- ▸ Maintained Flutter SDK compatibility and managed third-party package dependencies.
- ▸ Collaborated across QA, UX/UI, and product teams in fast-paced Agile sprints.
- ▸ Debugged and optimized Firebase Push Notifications for improved delivery reliability.
Accomplishments
- ✦ Improved app performance by 30% through targeted refactoring and critical bug fixes.
- ✦ Ensured long-term app scalability with clean dependency management and SDK upgrades.
Freelance Flutter Mobile Developer
City Government of San Luis
Freelance · San Luis, Argentina
Flutter Dart REST APIs Real-time Data
Responsibilities
- ▸ Reverse-engineered undocumented code in SIGEM S.L. to fix critical bugs and restore functionality.
- ▸ Built a booking appointments feature across municipal services (driver licenses, permits).
- ▸ Maintained an internal real-time bus tracking app with accurate location updates and ETAs.
- ▸ Collaborated with government stakeholders to ensure app stability under tight deadlines.
Accomplishments
- ✦ Onboarded quickly to a complex legacy codebase with zero documentation.
- ✦ Delivered booking system across 3+ municipal services, improving citizen UX significantly.
Now — Open to new opportunities in Barcelona or remote
Education
2019 — 2021
National University of San Luis
University Technician in Web & Mobile Development
San Luis, Argentina
2022 — 2024
Platzi
Web/Mobile Development · Cloud Computing · English · Leadership
Online
Web Development Mobile Development Cloud Computing English Academy
03 — Projects
RECENT WORK
Select a project to explore.
projects.exe — Javier Silvestri
● READY
~$ ls ./projects
- ▸ Branch Visualizer ★
- ▸ DOSEP MOVIL ★
- ▸ SIGEM S.L. ★
- ▸ CHEFCO PASTAS
- ▸ EUGE FOTOGRAFIA
- ▸ ROCKETS EXPLORER ★
- ▸ TESLA CLONE
$ 7 entries
$ 4 featured
CONSOLE
04 — Skills
MY TOOLKIT
Technologies and tools I build with.
📱 Mobile
Flutter (v2/v3) Dart Swift (v6) SwiftUI Kotlin React Native
🌐 Frontend
TypeScript React Next.js Astro Tailwind CSS JavaScript ES6+
⚙️ Backend
Node.js NestJS Firebase PostgreSQL MongoDB REST APIs Python
🔄 State Mgmt
BLoC Provider GetX Zustand Redux
🚀 DevOps
Git GitHub Actions Docker CI/CD Agile/Scrum Postman
🤖 AI-Assisted
GitHub Copilot Claude ChatGPT Gemini OpenCode
05 — Open Source
GITHUB
18
◈ Repositories
6
★ Total Stars
12
◉ Followers
20
◎ Following
output: language breakdown
Dart 38% TypeScript 24% JavaScript 18% HTML/CSS 12% Other 8%
output: contribution activity (last 52 weeks)
less more