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Rajan S.

Rajan S.

Full Stack AI, Mobile & Web Developer | React Native | Flutter | Node

I’m a Full Stack AI, Mobile & Web Developer with 10+ years of experience building reliable, scalable, and user-focused digital products for startups, businesses, and growing companies. I specialize in taking products from idea and MVP to production, covering everything from mobile and web development to backend architecture, APIs, databases, third-party integrations, AI features, and deployment. Whether you’re building a new product, improving an existing application, or looking for a long-term development partner, I can take ownership of the complete development process. What I Build --------------- Mobile Apps -iOS & Android applications -React Native & Expo -Flutter applications -Native iOS (Swift) & Android (Kotlin) -On-demand & delivery apps -Healthcare & telemedicine apps -Ride-hailing & mobility apps -Marketplaces & eCommerce apps -Booking & service platforms -Social & community applications -Subscription-based apps -AI-powered mobile applications Web & Full Stack Development ------------------------------------- -Custom web applications -SaaS platforms -Admin dashboards & business portals -Marketplaces and eCommerce platforms -Booking and management systems -Customer/vendor platforms -Responsive websites and web applications -API-driven applications and integrations AI Development --------------------- -OpenAI / ChatGPT integrations -Anthropic / Claude integrations -AI assistants and conversational applications -AI-powered recommendations -OCR and document processing -Image and text analysis -AI-powered search -Content generation -LLM-based SaaS products -AI automation and workflows Tech Stack -------------- -Frontend: React.js, Next.js, Nuxt.js, TypeScript, JavaScript, Tailwind CSS -Mobile: Flutter, Dart, React Native, Expo, Swift, Kotlin -Backend: Node.js, NestJS, Python, FastAPI, Django, PHP -Database: PostgreSQL, MySQL, MongoDB, Firebase, Supabase -Integrations: REST APIs, Stripe, payment gateways, authentication, maps/location, push -notifications, real-time services and third-party APIs -CMS & eCommerce: WordPress, Shopify, WooCommerce, custom themes, plugins and integrations Why Work With Me? ------------------------ I focus on more than just development. I work closely with clients to understand the business objective, user requirements, technical challenges, and long-term product roadmap before choosing the right approach. You can expect: ------------------- -Clean, scalable and maintainable code -Strong focus on performance and user experience -Full-stack ownership from frontend to backend -AI and third-party API integrations -Existing application improvements and bug fixing -Testing, optimization and production deployment -Clear communication and regular progress updates -40+ hours/week availability -Long-term development and maintenance support I’ve worked across different industries and product types, so I’m comfortable joining an existing development team, taking over an existing codebase, or building a product from the ground up. Have an idea, Figma design, MVP, existing application, or technical challenge? Send me the details and let’s discuss how we can turn it into a reliable, production-ready product.

🇮🇳Jalandhar, India$10/hr100% JSS4.62 (72)Since Mar 2015

Earnings and projects

MRR
$736

Last 6 months ÷ 6

World#61,524 / 412k
🇮🇳Country#6,657 / 45.9k
Revenue, last 30 days
$1.8k

Last 6 months: $4.4k

World#24,716 / 412k
🇮🇳Country#2,963 / 45.9k
Total earnings
$136k

Billed in all: $137k

World#26,910 / 412k
🇮🇳Country#4,400 / 45.9k
Per project
$1.4k

$1.5k in the last 6 months

World#101,105 / 412k
🇮🇳Country#12,576 / 45.9k
Projects, last 6 months
3

Across 5 contracts

0% fixed100% hourly
World#66,479 / 412k
🇮🇳Country#7,740 / 45.9k
Projects in all
99

Across 125 contracts

23% fixed77% hourly
World#28,153 / 412k
🇮🇳Country#5,037 / 45.9k

Earnings, last 30 days

$137k+$1.8k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$135k$136k$137k$138kOct 8Oct 23Nov 7

Skill rankings: Top 13% in Android

Ranked by MRR among everyone on Upwork with the skill.

  1. #65Flutter Stack470 freelancers · 🇮🇳 #22Top 14%
  2. #214Smartphone995 freelancers · 🇮🇳 #59Top 22%
  3. #321Dart2,324 freelancers · 🇮🇳 #86Top 14%
  4. #361AI Mobile App Development1,401 freelancers · 🇮🇳 #140Top 26%
  5. #402Web Application Development2,030 freelancers · 🇮🇳 #128Top 20%
  6. #437Kotlin3,021 freelancers · 🇮🇳 #155Top 14%
  7. #532Swift3,634 freelancers · 🇮🇳 #188Top 15%
  8. #595iOS3,908 freelancers · 🇮🇳 #168Top 15%