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Kumar A.

Kumar A.

Senior Full-Stack & Mobile Developer | React | Next.js | AI

Hi, I'm Kumar Aryan. Thanks for stopping by. If you're looking for someone who can jump into your project, understand the existing codebase, and start delivering without a long learning curve, you're in the right place. I have 7+ years of experience building web and mobile applications using React, Next.js, Angular, Vue.js, Node.js, React Native, Flutter, JavaScript, and TypeScript. Over the years, I've worked with startups, agencies, and product teams on SaaS platforms, admin dashboards, business applications, customer portals, e-commerce solutions, and mobile apps. I'm comfortable working on both new projects and existing applications. Whether it's building a feature from scratch, fixing complex bugs, improving performance, integrating APIs, or modernizing an older codebase, I enjoy solving problems and writing code that's easy to maintain. Recently, AI has become part of my everyday workflow. I regularly use Cursor, GitHub Copilot, ChatGPT, Claude, and other AI tools to speed up development, review code, debug issues, write tests, and explore different implementation approaches. When it makes sense for the product, I also integrate AI features using OpenAI APIs and other LLM services. Here's what I usually help clients with: • Full-Stack Web Development • Frontend Development with React, Next.js, Angular, and Vue • Cross-Platform Mobile Apps using React Native and Flutter • REST API and Third-Party API Integration • SaaS Product Development • AI Integration and AI-Powered Features • Admin Dashboards and Business Applications • Performance Optimization • Bug Fixing and Code Refactoring • Long-Term Product Development My primary tech stack includes: Frontend • React.js • Next.js • Angular • Vue.js • TypeScript • JavaScript • HTML5 • CSS3 • Tailwind CSS • Bootstrap • Material UI Backend • Node.js • Express.js • REST APIs • GraphQL • Go (Golang) Mobile • React Native • Flutter • Expo • Ionic Databases • MySQL • PostgreSQL • MongoDB • Firestore Cloud & DevOps • AWS • Docker • Vercel • Netlify • Git • GitHub • Bitbucket • GitHub Actions What you can expect when working with me: • Clear and honest communication • Regular progress updates • Clean, maintainable code • Attention to performance and user experience • A developer who takes ownership instead of waiting for instructions I believe good software comes from understanding the problem first, not just writing code. My goal is always to build solutions that are reliable today and easy to improve tomorrow. If you think we're a good fit, feel free to send me a message. I'd be happy to discuss your project and see how I can help. Looking forward to working with you. Kumar Aryan

🇮🇳Darbhanga, India$25/hr100% JSS4.86 (11)Since May 2019

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#227,471 / 412k
🇮🇳Country#27,714 / 45.9k
Revenue, last 30 days
$0
Total earnings
$6.9k
World#227,471 / 412k
🇮🇳Country#27,714 / 45.9k
Per project
$575
Projects, last 6 months
0
World#209,850 / 412k
🇮🇳Country#23,217 / 45.9k
Projects in all
12
67% fixed33% hourly
World#183,649 / 412k
🇮🇳Country#24,811 / 45.9k

Earnings, last 30 days

$6.9kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$6.7k$6.8k$6.9k$7.0kOct 8Oct 23Nov 7

Skills