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You will get RESTful Developer | MERN | Node JS | React JS | MongoDB
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Project details
IMPORTANT: Every Client has custom requirements - let's talk in Upwork Chat before ordering
Restful API Development / Customization / Updates / Fixes will be done at $20/hr. Can give fixed price also after communication in Upwork messages.
After discussing your complete project requirements in the Upwork chat - Will share you fix price & timeline for project completion. Let's start talk with the Section below.
All Full Stack/ MERN / React new developement / customization/updates/fixes will be done at $25/hr.
My Services includes
MERN stack-based development, including full-stack website development
Website development and web application development using MERN, React.js, Node.js, and MongoDB
Conversion of PSD/Xd/Figma designs into responsive websites using React.js, Redux, and Node.js
APIs development and integration to enhance website functionality
Code debugging and optimization for fast loading and improved performance
Ensuring mobile responsiveness and cross-browser compatibility for seamless user experience
Fixing bugs and issues in existing websites to ensure smooth operation and user satisfaction.
Restful API Development / Customization / Updates / Fixes will be done at $20/hr. Can give fixed price also after communication in Upwork messages.
After discussing your complete project requirements in the Upwork chat - Will share you fix price & timeline for project completion. Let's start talk with the Section below.
All Full Stack/ MERN / React new developement / customization/updates/fixes will be done at $25/hr.
My Services includes
MERN stack-based development, including full-stack website development
Website development and web application development using MERN, React.js, Node.js, and MongoDB
Conversion of PSD/Xd/Figma designs into responsive websites using React.js, Redux, and Node.js
APIs development and integration to enhance website functionality
Code debugging and optimization for fast loading and improved performance
Ensuring mobile responsiveness and cross-browser compatibility for seamless user experience
Fixing bugs and issues in existing websites to ensure smooth operation and user satisfaction.
Programming Languages
HTML & CSS, JavaScriptCoding Expertise
Cross Browser & Device Compatibility, DesignWhat's included
| Service Tiers |
Starter
$99
|
Standard
$350
|
Advanced
$600
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 9 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 0 | 0 | 0 |
Design Customization | |||
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
19 reviews
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DM
David M.
Oct 15, 2024
Top worker. Amazing job.
CL
CHING FOO L.
Mar 11, 2026
Businesses Intelligent advisory,design,development
As usual, Kar Keong is a highly versatile pro in what he does! Always go above and beyond to understand project requirements and expectations, giving insightful business-oriented inputs to improve the outcome. Highly recommended, as I'm starting yet another project with him.
WT
Wei Meng T.
Mar 10, 2026
30 minute consultation
PH
Pete H.
Jan 6, 2026
Extend a cache system for crawler
PH
Pete H.
Sep 11, 2025
Scrap and format data using puppeteer via proxy
Fantastic freelancer - Would recommend to anyone
PS
Peter S.
Aug 25, 2025
Migration from power automation to n8n
About Kar Keong
AI automation expert | n8n | Vapi | AI agent | Full stack specialist
100%
Job Success
malaysia, Malaysia - 8:26 am local time
🏆𝐓𝐎𝐏 𝐑𝐚𝐭𝐞𝐝 AI automation 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤.
🎯Wanna use the AI automation to leverage your success by improving 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐯𝐢𝐭𝐲 𝟏𝟎𝟎%?
🚀Succussed helping businesses save 𝐮𝐩 𝟏𝟎𝟎𝟎 𝐇r𝐬+ weekly, using AI automation.
𝐅𝐢𝐧𝐝 𝐨𝐮𝐭 how my services can help your business....?
⚙️ Expert n8n Automation - Accelerate your business growth. I build powerful n8n workflows (100+ delivered) to automate tasks and free up your valuable time.
🎯 Strategy Aligned with Your Goals - Get solutions built precisely for your vision. I align technology directly with your objectives for faster, cost-effective project delivery and your ultimate success.
</> Faster Full-Stack Development - Build the robust web applications you need, faster. Leverage my 𝟖+ 𝐲𝐞𝐚𝐫𝐬 of expertise to power your online presence and achieve your goals quicker.
📊 Data Insights via Apify - Turn web data into your competitive advantage. I use Apify for scraping, cleaning, and analysis, providing actionable insights to fuel your strategic decisions.
🔊 Engaging AI Voice Agents (ElevenLabs) - Enhance your customer experience. Implement lifelike AI voice agents with ElevenLabs to engage your audience and streamline interactions.
✅ Your Vision, Delivered Successfully - Partner with a clear communicator dedicated to quality. I translate your ideas into high-impact solutions that drive your project's success.
n8n Services:
1. CRM Lead Sync - Automatically sync new CRM leads to your email marketing platform.
2. Form Processing - Process website form submissions and send custom email auto-responses.
3. Web Scraping & Storage - Scrape website data on a schedule and save it to Google Sheets or a database.
4. Social Media Automation - Automate social media posting across multiple platforms from a single source.
5. Real-time Notifications - Send Slack/Discord notifications for new sales, support tickets, or critical events.
6. Automated Reporting - Generate daily/weekly reports by pulling data from various APIs into one place.
7. Webhook Triggering - Trigger workflows instantly based on webhook events from third-party services.
8. Data Cleaning & Standardization - Clean and standardize incoming data before sending it to another application.
9. Database Updates - Update database records automatically when related information changes elsewhere.
10. Support Ticket Creation - Automate customer support ticket creation from emails or chat messages.
11. Attachment Handling - Download email attachments and upload them to cloud storage (Drive, Dropbox).
12. AI Data Enrichment - Enrich data using AI services (e.g., sentiment analysis, translation, classification).
13. E-commerce Order Management - Manage e-commerce order fulfillment by connecting store, inventory, and shipping.
14. Task Management Automation - Create tasks in project management tools (Trello, Asana) from emails or forms.
15. Website Uptime Monitoring - Monitor website uptime and send alerts if a site goes down.
16. Cloud File Synchronization - Synchronize files or data between different cloud storage services.
17. Invoice Generation - Automate invoice generation based on completed projects or time tracking data.
18. Lead Routing - Route incoming leads to the appropriate sales team member based on criteria.
19. Appointment Scheduling - Handle appointment scheduling confirmations and reminders automatically.
20. Database Backup - Back up critical database information to another location regularly.
Core Technical Skills:
Automation: n8n (Expert Level, 100+ Workflows Built)
Data Services: Apify (Web Scraping, Data Mining, Data Cleaning, Data Analysis)
AI Services: ElevenLabs and Vapi (AI Voice Agent Development)
Web Development (Full-Stack): JavaScript, PHP, MySQL, HTML, CSS
Frameworks & Platforms:Express.js, React.js, Mongo, Mysql Laravel, Vue.js, WordPress, Squarespace
Methodologies: Requirements Gathering & Analysis, Solution Architecture
Steps for completing your project
After purchasing the project, send requirements so Kar Keong can start the project.
Delivery time starts when Kar Keong receives requirements from you.
Kar Keong works on your project following the steps below.
Revisions may occur after the delivery date.
I will create an Restful API Using MERN Stack
One resource is included - Create - Update - Read - Delete