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Viet Tuan T.
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Viet Tuan T.

Senior Android (Java/Kotlin) - iOS (Object-C/Swift) - Flutter (Dart)

🌟🌟🌟 TOP RATED 🌟🌟🌟 📌 Flutter • Android • iOS • Cross-Platform • Game & Fintech • Senior Software Engineer with 8+ years of experience in Mobile & Web development • Flutter specialist with strong focus on production apps, performance, and clean architecture • Hands-on experience with Android (Kotlin) and iOS (Swift), both native and cross-platform • Proven Technical Lead / Team Lead experience (4–6 members) • Built and scaled apps in Fintech, Blockchain Wallets, Medical, Social, and Gaming domains • Strong background in architecture design, performance optimization, and CI/CD pipelines • Game development experience (Unity, Cocos2d-x) — great for animations and interactive UI • Product-driven mindset with solid communication and ownership • Fast learner, adaptable, and reliable for long-term projects Skills: Flutter (Proficient, 9/10), Java/Kotlin (Proficient, 9/10), Swift (Proficient, 9/10), Objective-C (Proficient, 9/10), API with PHP (Knowledgeable, 7/10), Angular JS (Knowledgeable, 8/10), Node JS (Knowledgeable, 7/10), Nuxt.js / Next.js (Proficient, 8/10), Unity / Cocos2d-x (Knowledgeable, 7.5/10), IDEs: Eclipse (Proficient, 9/10), Android Studio (Proficient, 9/10), Sketch (Knowledgeable, 7/10), Photoshop (Knowledgeable, 7/10), XD (Knowledgeable, 7/10), Notepad++ (Proficient, 9/10) Tools: SVN (Knowledgeable, 7/10), Jira (Knowledgeable, 7/10), Trello (Proficient, 8/10), GIT (Proficient, 8/10), Bitbucket (Proficient, 8/10), Gitlab (Proficient, 8/10)

🇻🇳Da Nang, Vietnam$20/hr100% JSS4.97 (24)Since Nov 2018

Earnings and projects

MRR
$260

Last 6 months ÷ 6

World#103,792 / 412k
🇻🇳Country#960 / 3,463
Revenue, last 30 days
$1.1k

Last 6 months: $1.6k

World#40,843 / 412k
🇻🇳Country#349 / 3,463
Total earnings
$140k

Billed in all: $140k

World#25,907 / 412k
🇻🇳Country#205 / 3,463
Per project
$5.2k

$1.6k in the last 6 months

World#33,663 / 412k
🇻🇳Country#224 / 3,463
Projects, last 6 months
1
100% fixed0% hourly
World#128,096 / 412k
🇻🇳Country#1,284 / 3,463
Projects in all
27

Across 30 contracts

67% fixed33% hourly
World#106,303 / 412k
🇻🇳Country#867 / 3,463

Earnings, last 30 days

$140k+$1.1k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$139k$140k$141kOct 8Oct 23Nov 7

Dotted: longer than usual between two readings. Hatched: over two weeks without one.

Skill rankings: Top 14% in Objective-C

Ranked by MRR among everyone on Upwork with the skill.

  1. #116Business with 1-9 Employees545 freelancers · 🇻🇳 #2Top 21%
  2. #178Objective-C1,282 freelancers · 🇻🇳 #8Top 14%
  3. #197Mobile App Redesign693 freelancers · 🇻🇳 #3Top 28%
  4. #534Dart2,324 freelancers · 🇻🇳 #9Top 23%
  5. #658Kotlin3,021 freelancers · 🇻🇳 #16Top 22%
  6. #732Swift3,634 freelancers · 🇻🇳 #13Top 20%
  7. #887iOS3,908 freelancers · 🇻🇳 #10Top 23%
  8. #1,015Android4,975 freelancers · 🇻🇳 #14Top 20%