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Sachintha S.
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Sachintha S.

Expert Flutter Developer | Android & iOS | Web | UIUX

🏆 Top Rated Plus Freelancer on Upwork 🎯 5+ Years Experience in Flutter 📈 30+ Mobile Apps Built and Published Looking for a seasoned Flutter developer to transform your ideas into high-performance, visually stunning mobile applications? With over five years of experience in Flutter and native app development, I help clients worldwide achieve their goals with apps that are both functional and engaging. My Expertise 📱Cross-Platform Development: Flutter, Dart 📱State Management: BloC, Provider, Riverpod, GetX 📱Backend Integration: Firebase, REST APIs, SQL 📱Native App Development: Android (Java, Kotlin), iOS (SwiftUI) 📱Social Media Integrations: Facebook, Google, Twitter 📱Payment Gateways: Stripe, PayPal, Skrill, Flutterwave, PayStack 📱Advanced Features: Messaging SDKs, Google Maps, MapBox, Live Streaming 📱Ad Integrations: Various advertisement SDKs 📱UI/UX Design: Crafting beautiful user interfaces with smooth animations 📱Design Patterns and Architectures: MVC, MVP, MVVM, Clean Architecture 📱UI Frameworks: Material Design, Cupertino 📱Backend Technologies: Firebase Suite, MySQL, MongoDB, Node.js, Laravel 📱Version Control: Git, GitHub, Bitbucket 📱CI/CD: Codemagic, GitHub Actions, Fastlane 📱Testing: Test-Driven Development, JUnit, Mockito, Espresso 📱APIs and SDKs: REST APIs, Stripe, Google AdMob, Agora, Google Analytics 📱App Distribution: Google Play Console, Apple App Store With a deep understanding of the complete development lifecycle and a proven track record, I ensure every app I build not only looks great but also provides a seamless and enjoyable user experience. Why Choose Me? 🚀Client Satisfaction: Long-term contracts with highly satisfied clients 🚀Versatility: Experienced in working with startups, SMEs, and large organizations 🚀Communication: Strong focus on clear and consistent communication 🚀Leadership: Excellent at leading and mentoring development teams What I Offer 👉Full-cycle app development: From idea to deployment 👉Cross-platform apps: iOS, Android, Web, Windows 👉Backend integrations: Secure and scalable solutions 👉Continuous support: Ongoing maintenance and updates 👉Bug fixing and optimization: Ensuring high performance and reliability 👉App distribution: Publishing apps on Google Play and Apple App Store Let’s work together to bring your vision to life. Contact me to kickstart your project and create a digital experience that exceeds expectations!

🇱🇰Galle, Sri Lanka$30/hr100% JSS5.00 (15)Since Apr 2019

Earnings and projects

MRR
$5.3k

Last 6 months ÷ 6

World#4,870 / 412k
🇱🇰Country#7 / 1,581
Revenue, last 30 days
—

Read daily since Nov 3, under 30 days

Total earnings
$157k

Billed in all: $168k

World#22,013 / 412k
🇱🇰Country#59 / 1,581
Per project
$8.3k

$16k in the last 6 months

World#20,074 / 412k
🇱🇰Country#37 / 1,581
Projects, last 6 months
2
50% fixed50% hourly
World#88,922 / 412k
🇱🇰Country#409 / 1,581
Projects in all
19

Across 22 contracts

59% fixed41% hourly
World#138,390 / 412k
🇱🇰Country#761 / 1,581

Earnings, last 30 days

$168kNothing earned since Nov 3Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$164k$166k$168k$170kNov 3Nov 6Nov 8

Tracked from Nov 3, 2026.

Skill rankings: Top 1% in Dart

Ranked by MRR among everyone on Upwork with the skill.

  1. #25Native App Development833 freelancers · 🇱🇰 #1Top 3%
  2. #29Dart2,324 freelancers · 🇱🇰 #1Top 1%
  3. #86Mobile App Design5,198 freelancers · 🇱🇰 #1Top 2%
  4. #91Swift3,634 freelancers · 🇱🇰 #1Top 3%
  5. #107User Interface Design6,795 freelancers · 🇱🇰 #1Top 2%
  6. #110UI/UX Prototyping6,982 freelancers · 🇱🇰 #1Top 2%
  7. #125Firebase6,978 freelancers · 🇱🇰 #1Top 2%
  8. #133Flutter7,550 freelancers · 🇱🇰 #1Top 2%