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Tarun K.
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Tarun K.

Mobile App & Full Stack Developer with AI Driven Solutions

I develop mobile apps with React Native and full-stack web applications with React.js, Node.js, and MongoDB. My work includes AI applications, data analytics platforms, and the APIs and databases that connect them. Whether you’re building a new product or improving an existing application, I start by understanding the workflows, technical requirements, and issues that need attention. We then agree on a clear scope and deliver working features in milestones. WHAT I CAN HELP WITH • React Native Mobile App Development Build and maintain mobile applications, implement new features, resolve bugs, and improve existing user experiences. • Full-Stack Web Development Develop React.js frontends and Node.js backends for custom web applications, SaaS products, and business platforms. • API Development & Integration Build RESTful APIs and connect applications with external services, keeping data flows and error handling clear and reliable. • MongoDB & Database Architecture Structure application data around your product’s workflows, with attention to query performance and maintainability. • AI App Development Develop web and mobile applications that incorporate AI features into practical user workflows. • Application Maintenance & Performance Optimization Troubleshoot frontend and backend issues, improve slow functionality, and extend existing applications. RELEVANT PROJECT EXPERIENCE Data analytics web application: Developed an integrated platform with RESTful APIs supporting data management. NFT minting and ecommerce platform: Worked on a platform combining ecommerce functionality with blockchain integrations. Event-booking web application: Delivered design and development work for an event-booking product. React Native applications: Developed and maintained existing apps, including ongoing feature work. Social and AI application: Contributed full-stack development to a product combining social functionality and AI. CORE TECHNOLOGIES JavaScript | React.js | React Native | Node.js | NestJS | MongoDB | MERN Stack | RESTful APIs HOW WE WORK We begin with your requirements or a review of the existing codebase. I identify priorities, explain technical trade-offs, and break the work into manageable milestones. Throughout development, you receive progress updates and working functionality to review. I can continue supporting the application with fixes, improvements, and new features as your needs evolve. Send me your project brief, existing app, or the issue you’re facing, and we can work out the next practical step.

🇳🇱Amsterdam, Netherlands$30/hr100% JSS4.67 (39)Since Apr 2019
MRR
$170
🌍#111K/363K
🇳🇱#264/1,332
Recent Earnings
$1,019
🌍#111K/363K
🇳🇱#264/1,332
Total Earnings
$52,839
🌍#68.1K/363K
🇳🇱#199/1,332
Avg. Per Project
$997
🌍#115K/363K
🇳🇱#366/1,332
Recent Projects
3
2f2h
🌍#53.9K/363K
🇳🇱#159/1,332
Total Projects
53
32f26h
🌍#53.9K/363K
🇳🇱#159/1,332
MRR Performance Over Time
$50k$25k$0
6 mo ago3 mo agoNow
Coming SoonGathering historical data
World Skill Rankings
of 1,195
#564
AI Mobile App DevelopmentTop 47%
#616AI Model Integration
#908MERN Stack
#957CRM Development
#1,461Supabase
#1,587Android App Development
#1,694iOS Development
#1,763AI App Development
#1,809SaaS Development
#2,232OpenAI API
#2,288Mobile App Development
#2,502MongoDB
#2,634React Native
#3,083Full-Stack Development
#4,031TypeScript
#4,483Next.js
#5,998API Integration
#6,582Node.js
#8,341React
#10,152JavaScript
🇳🇱Netherlands Skill Rankings
of 4
#1
AI Model IntegrationTop <0.01%
#1MERN Stack
#1CRM Development
#1MongoDB
#2AI Mobile App Development
#3OpenAI API
#4React Native
#4SaaS Development
#4iOS Development
#4Android App Development
#4Supabase
#5Mobile App Development
#5AI App Development
#8Next.js
#10Full-Stack Development
#10TypeScript
#11Node.js
#13React
#20JavaScript
#21API Integration
Tarun K. — Top 20% in Netherlands | UpworkMRR