You will get with pixel-perfect UI and bug-free web app with a smooth transition
Top Rated
Top Rated
Project details
My expertise is in Javascript, Typescript, React JS, SQL, NoSQL, MVC development, database design, server maintenance, and triage support for emergency website crashes and security issues. I follow a test-driven development system for most of my projects. So you will get a secure and smooth web application. I also follow design principles for styling components so the UI will be pixel-perfect.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$599
|
Standard
$999
|
Advanced
$1,599
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 2 | Unlimited | Unlimited |
Number of Pages | 2 | 3 | 5 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
Frequently asked questions
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GC
Gee C.
Oct 28, 2025
React Native Developer for App Enhancements and Bug Fixes
Great developer who is very responsive. Great for remote teams.
TL
Thadeous L.
Sep 18, 2025
Dev Needed to Help Finalize a Map-Based Daily Game (Web + App MVP)
I gave mid-project feedback on Shashin, and it is consistent with the end-of-contract feedback: Working with Shashin has been an excellent experience from start to finish. I came to him with a clear vision and an early prototype, and he helped me turn it into a fully realized, functional product. From the outset, he understood the goals of the project, asked thoughtful clarifying questions, and consistently translated my direction into high-quality code.
His communication has been top-notch: always clear, proactive, and responsive. He kept me informed at every stage, raised issues early, and welcomed feedback without hesitation. When I suggested adjustments, he implemented them quickly and often added refinements that made the final product more polished and user-friendly.
On the technical side, Shashin has been excellent. He delivered smooth functionality, clean and maintainable code, and intuitive user interactions. His work elevated the project well beyond its initial prototype. He also made sure to explain his approach in ways that were easy to follow, which gave me full confidence in the build process even without being a developer myself.
Just as importantly, he respected the constraints of the project. I am not a large company with unlimited resources, but he worked within budget and timeline while still going above and beyond to ensure quality. He was reliable, professional, and easy to collaborate with throughout.
Overall, this has been an A++ experience. Shashin is exactly the kind of developer I hoped to find on Upwork: skilled, communicative, and invested in delivering great work. I would gladly work with him again and highly recommend him to anyone looking for a dependable, talented developer.
His communication has been top-notch: always clear, proactive, and responsive. He kept me informed at every stage, raised issues early, and welcomed feedback without hesitation. When I suggested adjustments, he implemented them quickly and often added refinements that made the final product more polished and user-friendly.
On the technical side, Shashin has been excellent. He delivered smooth functionality, clean and maintainable code, and intuitive user interactions. His work elevated the project well beyond its initial prototype. He also made sure to explain his approach in ways that were easy to follow, which gave me full confidence in the build process even without being a developer myself.
Just as importantly, he respected the constraints of the project. I am not a large company with unlimited resources, but he worked within budget and timeline while still going above and beyond to ensure quality. He was reliable, professional, and easy to collaborate with throughout.
Overall, this has been an A++ experience. Shashin is exactly the kind of developer I hoped to find on Upwork: skilled, communicative, and invested in delivering great work. I would gladly work with him again and highly recommend him to anyone looking for a dependable, talented developer.
RN
Rocket N.
Mar 30, 2025
Mobile App: Front End Dev - React/Javascript
I really enjoyed working with Shashin, and I would recommend anyone else do the same. He was a professional communicator and delivered high-quality work.
JG
Jaydeep G.
Nov 28, 2023
Skilled full stack and mobile developer
UP
Usha P.
May 30, 2023
Expert React Developer - Front End - Web App - Full-Time Position
About Shashin
Full Stack Developer (Web and Mobile) | AI SAAS Developer
100%
Job Success
Surat, India - 6:14 am local time
🏆 Top Rated Plus | 🏆 100% Job Success Score
🏆 AWS Certified Developer | 8+ Years of Full-Stack Experience
I help startups and growing businesses launch high-performance mobile apps and web platforms that scale reliably and delight users.
Instead of just writing code, I focus on results that matter to you:
- Faster time-to-market with React Native cross-platform apps (iOS + Android from one codebase).
- Scalable, secure backends with Node.js and AWS so your product can handle growth without breaking.
- Smooth user experiences that increase retention, engagement, and customer satisfaction.
Tech Stack & Skills:
🔹 Mobile Development (iOS & Android):
React Native, Expo, React Native CLI
AI Tools like Claude Code, Gemini, Cursor, etc
Cross-Platform App Development
Push Notifications, Camera, Location, Maps
In-App Purchases, Payment Gateway Integration (Stripe, Razorpay)
App Deployment (Play Store & App Store)
🔹 Front-End:
React.js, Next.js, JavaScript, TypeScript
React Native
Responsive UI/UX, Figma to React Native
Redux, Context API, Zustand
🔹 Back-End:
Node.js (Express, Nest), Supabase, Firebase, OpenAI APIs
REST APIs, GraphQL, WebSocket Integration
PostgreSQL, MySQL, MongoDB, SQL Server
Authentication, Role-Based Access, Real-Time Sync
🔹 DevOps & Cloud:
AWS (EC2, S3, Lambda, RDS, Cognito)
Vercel, Netlify
Git, GitHub, Bitbucket, CI/CD, Docker
🔹Testing & Bug Fixing
Unit and end-to-end testing with Jest, Mocha, and Cypress
Debugging, performance optimization, and cross-platform issue resolution
Industries I’ve Worked In:
Real Estate & Property Management
Social Networking & Messaging Platforms
IoT Applications
E-commerce & Marketplaces (Fitness, Beauty, Fashion)
LegalTech, Media & News Platforms
Food Delivery & Restaurant Apps
Travel, Community, and Event Apps
Whether you're building a mobile MVP, scaling a complex full-stack app, or integrating third-party APIs, I bring deep expertise, clean code, and reliable communication to the table. Let's work together to launch something amazing.
Steps for completing your project
After purchasing the project, send requirements so Shashin can start the project.
Delivery time starts when Shashin receives requirements from you.
Shashin works on your project following the steps below.
Revisions may occur after the delivery date.
Build app according to client requirements
UI, backend services and state management will be handled
Add Unit test