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Hemangini J.
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Hemangini J.

Mobile App Developer: Flutter | Swift | Kotlin | React Native | GenAI

100% Job Success 🔸 4700+ Upwork Hours 🔸 12+ Years of Experience 🔸 High Quality Product Delivery 🔸 Long Term Partnership 🚀 I specialize in building scalable, high-performing mobile applications for startups and enterprises. In the last 12 years, I’ve helped 50+ startups go from 💡Idea → 📱Mobile Product → 💰Revenue. Many of them secured VC funding and scaled to 100k+ active users. My unique strength is blending Mobile Development ➕ AI/GenAI ➕ Product Discovery to deliver apps that are not just functional, but future-ready. Mobile App Expertise ✔️ Cross-platform apps – Flutter, React Native ✔️ Native apps – Swift (iOS), Kotlin/Java (Android) ✔️ Backend & APIs – Node.js, Python, Firebase, GraphQL, REST ✔️ AI-driven mobile apps – Chatbots, RAG, Voice Assistants, AI Agents, Generative AI ✔️ Real-time & interactive apps – Video Streaming (RTP/RTCP), Chat, Geofencing, Beacon integration Industry Solutions I’ve Delivered: EdTech / LMS Mobile Apps On-Demand Service Apps (Delivery, Home Services, Logistics) FinTech & Payment Apps (Stripe/PayPal integration, Wallets) Healthcare Apps (EHR/EMR with HIPAA compliance) Job & Service Marketplaces Social Media & Networking Apps SaaS Mobile Extensions eCommerce Apps with POS integration Key Strengths: ✔️ Flutter for sleek, scalable cross-platform apps ✔️ Swift & Kotlin for high-performance native experiences ✔️ Deep integration with AI & Generative AI for intelligent apps ✔️ Strong backend knowledge (APIs, databases, cloud) for end-to-end delivery Let’s collaborate to bring your mobile app idea to life - from concept to launch to scale.

🇮🇳Ahmedabad, India$20/hr100% JSS4.66 (4)Since Dec 2013

Earnings and projects

MRR
$6k

Last 6 months ÷ 6

World#3,828 / 412k
🇮🇳Country#422 / 45.9k
Revenue, last 30 days
$0

Last 6 months: $36k

Total earnings
$137k

Billed in all: $140k

World#26,516 / 412k
🇮🇳Country#4,338 / 45.9k
Per project
$20k

$36k in the last 6 months

World#6,163 / 412k
🇮🇳Country#605 / 45.9k
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇮🇳Country#14,379 / 45.9k
Projects in all
7

Across 8 contracts

38% fixed62% hourly
World#236,188 / 412k
🇮🇳Country#30,349 / 45.9k

Earnings, last 30 days

$140kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$138k$140k$142k$144kOct 8Oct 23Nov 7

Skill rankings: Top 1% in Dart

Ranked by MRR among everyone on Upwork with the skill.

  1. #11FlutterFlow834 freelancers · 🇮🇳 #5Top 1%
  2. #20Bubble.io749 freelancers · 🇮🇳 #4Top 3%
  3. #24Dart2,324 freelancers · 🇮🇳 #4Top 1%
  4. #52Kotlin3,021 freelancers · 🇮🇳 #8Top 2%
  5. #75AI Consulting2,321 freelancers · 🇮🇳 #11Top 3%
  6. #78Swift3,634 freelancers · 🇮🇳 #14Top 2%
  7. #103Firebase6,978 freelancers · 🇮🇳 #19Top 1%
  8. #111Flutter7,550 freelancers · 🇮🇳 #35Top 1%