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Volodymyr K.
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Volodymyr K.

Senior Mobile Developer | Android, iOS & Flutter

### Senior Mobile Developer | Android, iOS & Flutter I’ve been building mobile applications since 2016, helping clients create reliable, scalable, and user-friendly products for Android and iOS, as well as cross-platform apps with Flutter. With 10 years of experience, I focus on delivering apps that are cleanly built, maintainable, and ready for real-world use. I care about code quality, performance, usability, and building products that support real business goals. **What I bring to each project:** ✓ Clean, scalable, and maintainable code ✓ Strong focus on quality and attention to detail ✓ Full-cycle experience from planning to release ✓ Modern Android, iOS, and Flutter development practices ✓ A practical, solution-focused mindset **Languages:** ✪ Kotlin ✪ Java ✪ Swift ✪ Dart **Skills & Expertise:** ✔ Native Android and iOS mobile development ✔ Cross-platform mobile development with Flutter ✔ Object-oriented programming and software design patterns ✔ Clean Architecture ✔ Jetpack Compose, XML, SwiftUI, and Flutter UI ✔ Material Design and UI/UX best practices ✔ Figma collaboration and UI implementation ✔ Responsive apps for multiple screen sizes and devices ✔ Testing, beta distribution, App Store, and Google Play releases **Technologies:** ✔ REST APIs, HTTPS, Sockets, gRPC ✔ Firebase ✔ Google SDKs ✔ AWS / Amazon SDKs ✔ Social media integrations ✔ Camera features ✔ Barcode and QR scanning ✔ Image processing ✔ Room, secure local storage, and caching ✔ Sensors, location services, and Mapbox I enjoy working on challenging projects and building mobile apps that are reliable, polished, and designed to deliver real value.

🇺🇦Zolochiv, Ukraine$40/hr100% JSS4.98 (59)Since Jun 2016

Earnings and projects

MRR
$281

Last 6 months ÷ 6

World#100,948 / 412k
🇺🇦Country#3,786 / 14.3k
Revenue, last 30 days
$824

Last 6 months: $1.7k

World#48,946 / 412k
🇺🇦Country#1,951 / 14.3k
Total earnings
$250k

Billed in all: $254k

World#10,713 / 412k
🇺🇦Country#880 / 14.3k
Per project
$4.1k

$842 in the last 6 months

World#42,098 / 412k
🇺🇦Country#2,443 / 14.3k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇺🇦Country#3,419 / 14.3k
Projects in all
61

Across 64 contracts

16% fixed84% hourly
World#49,857 / 412k
🇺🇦Country#2,340 / 14.3k

Earnings, last 30 days

$254k+$824 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$253.5k$254.0k$254.5kOct 8Oct 23Nov 7

Skill rankings: Top 16% in Android UI Design

Ranked by MRR among everyone on Upwork with the skill.

  1. #39Android UI Design239 freelancers · 🇺🇦 #5Top 16%
  2. #45Core Java275 freelancers · 🇺🇦 #5Top 16%
  3. #119XML717 freelancers · 🇺🇦 #10Top 17%
  4. #145Android SDK805 freelancers · 🇺🇦 #18Top 18%
  5. #169Google Maps API756 freelancers · 🇺🇦 #9Top 22%
  6. #224JSON1,293 freelancers · 🇺🇦 #29Top 17%
  7. #647Kotlin3,021 freelancers · 🇺🇦 #50Top 21%
  8. #718Swift3,634 freelancers · 🇺🇦 #69Top 20%