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Samad  K.
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Samad K.

Full-Stack Web & Mobile Dev | Next.js, Node.js, React Native, Flutter

Full-Stack Web & Mobile Engineer with 9+ years of experience building high-performance Next.js applications, custom React platforms, and cross-platform mobile apps for iOS and Android. As a former senior agency lead developer, I help startups and businesses transform complex technical requirements into clean, scalable, and high-converting web and mobile products built for speed, seamless UX, and top Google PageSpeed performance. CORE TECHNICAL CAPABILITIES: • Frontend & Web Apps: React.js, Next.js, TypeScript, Tailwind CSS, Redux • Mobile Development: React Native, Flutter, iOS (Swift), Android (Kotlin/Java) • Backend & Databases: Node.js, Express, Supabase, PostgreSQL, MongoDB, REST & GraphQL APIs • Performance & Architecture: Core Web Vitals, Mobile-First Optimization, Figma to Clean Code WHY CLIENTS PARTNER WITH ME: ✔Clean, scalable, hand-coded architecture instead of bloated templates or slow wrappers. ✔Optimized web and mobile codebases engineered for speed, low latency, and high conversion. ✔From database design and custom API integrations to sleek UI execution and App Store / Cloud deployments. Whether you are launching a new Next.js platform, building a cross-platform mobile app, or rebuilding an existing system, send me a message with your scope or wireframes to discuss your goals. Thanks! Samad K

🇺🇸Oakland, United States$35/hr100% JSSSince Oct 2025

Earnings and projects

MRR
$746

Last 6 months ÷ 2, the fewest it counts (since Oct 2026)

World#60,946 / 412k
🇺🇸Country#9,554 / 62.1k
Revenue, last 30 days
—

Read daily since Oct 21, under 30 days

Total earnings
$1.5k
World#358,220 / 412k
🇺🇸Country#54,951 / 62.1k
Per project
$1.5k

$1.5k in the last 6 months

World#94,579 / 412k
🇺🇸Country#16,036 / 62.1k
Projects, last 6 months
1
100% fixed0% hourly
World#128,092 / 412k
🇺🇸Country#16,472 / 62.1k
Projects in all
1
100% fixed0% hourly
World#360,671 / 412k
🇺🇸Country#53,151 / 62.1k

Earnings, last 30 days

$1.5kNothing earned since Oct 21Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,480$1,500$1,520$1,540Oct 21Oct 30Nov 7

Tracked from Oct 21, 2026.

Skill rankings: Top 8% in Cross-Browser Compatibility

Ranked by MRR among everyone on Upwork with the skill.

  1. #4Cross-Browser Compatibility48 freelancers · 🇺🇸 #2Top 8%
  2. #158FlutterFlow834 freelancers · 🇺🇸 #7Top 19%
  3. #456GraphQL3,403 freelancers · 🇺🇸 #25Top 13%
  4. #588iOS3,908 freelancers · 🇺🇸 #66Top 15%
  5. #745Back-End Development4,183 freelancers · 🇺🇸 #67Top 18%
  6. #871REST API5,062 freelancers · 🇺🇸 #73Top 17%
  7. #916Tailwind CSS6,978 freelancers · 🇺🇸 #55Top 13%
  8. #964Android App Development6,395 freelancers · 🇺🇸 #83Top 15%