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Adam L.
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Adam L.

Senior Mobile Engineer | Flutter, iOS & Android

→ Experienced Mobile Developer and early adopter of Flutter since 2019, focused on building scalable, high-performance, and maintainable mobile applications → Bachelor’s degree in Computer Science → Strong passion for clean code, best development practices, and high-quality user experiences --- Flutter & Mobile Expertise → Flutter pioneer, among the first developers globally to adopt the framework → Specialized in building production-grade cross-platform applications with seamless performance → Strong focus on readable, maintainable, and well-structured code to ensure long-term project health → Experience working in collaborative, fast-paced teams with high quality standards --- Architecture & Code Quality → Skilled in modern architectures such as BLoC, Modular, and similar patterns → Design and implementation of flexible, testable, and scalable application architectures → Strong background in state management, separation of concerns, and code maintainability → Focus on reducing technical debt and improving development efficiency --- E-commerce & High-Scale Applications → Development of mobile apps for some of Brazil’s most iconic retail brands → Experience with complex cart flows, payment integrations, and personalized user experiences → Deep integration with VTEX and Firebase ecosystems → Experience building and maintaining high-traffic, business-critical mobile applications --- Games & High-Engagement Apps → Key contributor to mobile games with more than 5 million total downloads → Worked on top-ranked Google Play applications, including: → Rabit – 2nd place, Google Play App of the Year 2021 → Farm vs Aliens – selected for Google Play Pass → Led and supported features focused on user retention, performance optimization, and robust state management --- Tech Stack & Tools → Front-end / Mobile: Dart, Flutter, Unity, C#, JavaScript, Swift, Android, HTML/CSS → Back-end: Spring Boot, Kotlin, Java, C#, C/C++, PHP, R → Databases: Sequel Ace, MongoDB → Cloud & Services: Firebase, Google Cloud Platform → Analytics & APIs: GameAnalytics, Postman → Operating Systems: macOS, Ubuntu, Windows

🇧🇷Salvador, Brazil$20/hr100% JSSSince Mar 2025
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Earnings and projects

MRR
$122

Last 6 months ÷ 6

World#129,647 / 412k
🇧🇷Country#1,545 / 4,647
Revenue, last 30 days
$0

Last 6 months: $730

Total earnings
$8.8k

Billed in all: $9.4k

World#206,727 / 412k
🇧🇷Country#2,184 / 4,647
Per project
$8.8k

$730 in the last 6 months

World#18,550 / 412k
🇧🇷Country#280 / 4,647
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇧🇷Country#1,427 / 4,647
Projects in all
1
0% fixed100% hourly
World#360,671 / 412k
🇧🇷Country#3,845 / 4,647

Earnings, last 30 days

$9.4kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$9.2k$9.3k$9.4k$9.5kOct 8Oct 23Nov 7

Skill rankings: Top 21% in Java

Ranked by MRR among everyone on Upwork with the skill.

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  2. #132Mobile App Development Consultation334 freelancers · 🇧🇷 #1Top 40%
  3. #182Mobile App Bug Fix453 freelancers · 🇧🇷 #1Top 40%
  4. #444Spring Boot2,150 freelancers · 🇧🇷 #9Top 21%
  5. #667Dart2,324 freelancers · 🇧🇷 #8Top 29%
  6. #689Game Development2,586 freelancers · 🇧🇷 #13Top 27%
  7. #798Unity2,992 freelancers · 🇧🇷 #14Top 27%
  8. #898App Development2,592 freelancers · 🇧🇷 #12Top 35%