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Pankaj K.

@pankajgarg86

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5.0
141

10.0

10.0

100%

Backend & Full Stack Engineer | AI Automation

$30 USD / Hour

・

Flag of

India (8:32 AM)

・

Joined on September 30, 2014

・

2 Recommendations

$30 USD / Hour

・

Top 1% Preferred Freelancer (Based on Platform Ranking) I am a Professional Full-Stack Developer with over 10+ years of experience delivering scalable, high-performance web and application solutions. I focus on clean architecture, performance optimization, and long-term maintainability. My goal is not just to complete a project, but to build solutions that exceed expectations and support business growth. 💻 Technical Skills Microsoft Stack: .NET Core | ASP.NET MVC | C# | Entity Framework | EF Core | Dapper | Web API | WPF | WCF | [login to view URL] | Azure | AWS Frontend & JavaScript: JavaScript | jQuery | AngularJS | Vue.js | Node.js | Express.js | Kendo UI | Telerik | DevExpress | HTML5 | CSS3 | Bootstrap Integrations: Payment Gateway Integration | Google API Integration | Twilio API | RESTful API Development CMS & Platforms: WordPress | Laravel | Shopify | Squarespace 🗄 Databases MS SQL Server | MySQL | PostgreSQL | Oracle | MongoDB | NoSQL | Microsoft Access 💡 What Makes Me Different • 10+ years experience in production systems • Top 1% on Freelancer • 100% On-Time & On-Budget • Clean, documented, maintainable code • Strong ownership mindset I don’t just complete tasks — I solve root problems. If you need stability, performance, and reliability, let’s discuss your project.

Verifications

On time

100%

On budget

100%

Accept rate

94%

Repeat hire rate

18%

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Portfolio

Portfolio

13908518
This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

13838688
I have developed a fully functional AI chatbot and integrated it with the existing codebase. This helps customers with automatic replies based on esim package prices. It supports multi-language and user specific currency.

AI Automation Chatbot development

13829486
Developed a full-stack .NET 8 management platform that automates the generation of CMS-1500 insurance claim forms. The system integrates Square for payments and Google Drive for document management, providing healthcare providers with a centralized tool for scheduling, clinical documentation, and financial operations. Technical Stack Backend: .NET 8, ASP.NET Core MVC, C# Database: Microsoft SQL Server (MSSQL) with Entity Framework Core Frontend: Kendo UI for ASP.NET Core, Bootstrap, jQuery, SignalR (Real-time updates) APIs & Services: Square Payment API, Google Drive API, Hangfire (Background Processing) Reporting: PdfSharpCore for dynamic PDF generation and medical form mapping. Architecture: Clean, multi-layered architecture (Core, Infrastructure, Web) promoting scalability and maintainability. Key Features Automated Medical Billing (CMS-1500): Features a sophisticated engine for generating industry-standard CMS-1500 health insurance claim forms. It includes automated data mappin

Appointment Management System

Developed a full-stack .NET 8 management platform that automates the generation of CMS-1500 insurance claim forms. The system integrates Square for payments and Google Drive for document management, providing healthcare providers with a centralized tool for scheduling, clinical documentation, and financial operations. Technical Stack Backend: .NET 8, ASP.NET Core MVC, C# Database: Microsoft SQL Server (MSSQL) with Entity Framework Core Frontend: Kendo UI for ASP.NET Core, Bootstrap, jQuery, SignalR (Real-time updates) APIs & Services: Square Payment API, Google Drive API, Hangfire (Background Processing) Reporting: PdfSharpCore for dynamic PDF generation and medical form mapping. Architecture: Clean, multi-layered architecture (Core, Infrastructure, Web) promoting scalability and maintainability. Key Features Automated Medical Billing (CMS-1500): Features a sophisticated engine for generating industry-standard CMS-1500 health insurance claim forms. It includes automated data mappin

Appointment Management System

13763761
German website dealing with E-vouchers. The website work consisted of Angular Front End and .NET Core 7 Web API as the backend. The main requirement was to implement complete invoice system and other tasks.

Telepins Angular .NET Core Web API

12248292
This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

10717977
This is ASP .NET web forms Application. with lot of custom work done according to requirements send my client. Frontend is designed using Bootstrap5,CSS3 and its backend is MySQL.

ASP .NET 4.5 Application

This is ASP .NET web forms Application. with lot of custom work done according to requirements send my client. Frontend is designed using Bootstrap5,CSS3 and its backend is MySQL.

ASP .NET 4.5 Application

This is ASP .NET web forms Application. with lot of custom work done according to requirements send my client. Frontend is designed using Bootstrap5,CSS3 and its backend is MySQL.

ASP .NET 4.5 Application

13908518
This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

This is a whatsapp chatbot system that will automatically recognise a customer’s message, pull the relevant catalogue item and reply with images, price and a direct purchase link. Its first duty is to handle customer inquiries • Commerce Manager set-up and product catalogue ready for sync • WhatsApp Business API configuration, number verification and webhook hosting • Chatbot logic that answers product questions 24/7 using the synced catalogue * Order Mangement and Get shipping details via whatsapp bot.

WhatsApp AI Automation

13838688
I have developed a fully functional AI chatbot and integrated it with the existing codebase. This helps customers with automatic replies based on esim package prices. It supports multi-language and user specific currency.

AI Automation Chatbot development

13829486
Developed a full-stack .NET 8 management platform that automates the generation of CMS-1500 insurance claim forms. The system integrates Square for payments and Google Drive for document management, providing healthcare providers with a centralized tool for scheduling, clinical documentation, and financial operations. Technical Stack Backend: .NET 8, ASP.NET Core MVC, C# Database: Microsoft SQL Server (MSSQL) with Entity Framework Core Frontend: Kendo UI for ASP.NET Core, Bootstrap, jQuery, SignalR (Real-time updates) APIs & Services: Square Payment API, Google Drive API, Hangfire (Background Processing) Reporting: PdfSharpCore for dynamic PDF generation and medical form mapping. Architecture: Clean, multi-layered architecture (Core, Infrastructure, Web) promoting scalability and maintainability. Key Features Automated Medical Billing (CMS-1500): Features a sophisticated engine for generating industry-standard CMS-1500 health insurance claim forms. It includes automated data mappin

Appointment Management System

Developed a full-stack .NET 8 management platform that automates the generation of CMS-1500 insurance claim forms. The system integrates Square for payments and Google Drive for document management, providing healthcare providers with a centralized tool for scheduling, clinical documentation, and financial operations. Technical Stack Backend: .NET 8, ASP.NET Core MVC, C# Database: Microsoft SQL Server (MSSQL) with Entity Framework Core Frontend: Kendo UI for ASP.NET Core, Bootstrap, jQuery, SignalR (Real-time updates) APIs & Services: Square Payment API, Google Drive API, Hangfire (Background Processing) Reporting: PdfSharpCore for dynamic PDF generation and medical form mapping. Architecture: Clean, multi-layered architecture (Core, Infrastructure, Web) promoting scalability and maintainability. Key Features Automated Medical Billing (CMS-1500): Features a sophisticated engine for generating industry-standard CMS-1500 health insurance claim forms. It includes automated data mappin

Appointment Management System

13763761
German website dealing with E-vouchers. The website work consisted of Angular Front End and .NET Core 7 Web API as the backend. The main requirement was to implement complete invoice system and other tasks.

Telepins Angular .NET Core Web API

12248292
This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

This is a E Voucher Application build using ABP Angular and Web API Project based on ASP .NET Core.

E Voucher Application | Angular + ASP .NET Core

10717977
This is ASP .NET web forms Application. with lot of custom work done according to requirements send my client. Frontend is designed using Bootstrap5,CSS3 and its backend is MySQL.

ASP .NET 4.5 Application

This is ASP .NET web forms Application. with lot of custom work done according to requirements send my client. Frontend is designed using Bootstrap5,CSS3 and its backend is MySQL.

ASP .NET 4.5 Application

This is ASP .NET web forms Application. with lot of custom work done according to requirements send my client. Frontend is designed using Bootstrap5,CSS3 and its backend is MySQL.

ASP .NET 4.5 Application

5.0 · 141 Reviews
Reviews
S
Flag of

Sachin B.

5.0

$$$

9 days ago

Meta WhatsApp Commerce Automation

Good Work on Timeliy Work done and fast responce to call and work

PHP
C Programming
Python
Software Architecture
eCommerce

+5 more

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Louie W.

2.4

$20 USD

1 month ago

Project for Pankaj K.

We did not get along very well. I tried to explain very simple instruction over and over again! He prolonged my project for a while. Just another big disappointment!

.NET
C# Programming
jQuery / Prototype
ASP.NET

+1 more

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Flag of

Louie W.

5.0

$345 USD

1 month ago

Stripe Integration Specialist Needed • $250 USD

Pankaj is knowledgeable. I will keep him on file.

PHP
Website Design
MySQL
HTML
Laravel

+1 more

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Flag of

Casimir Y.

5.0

$

2 months ago

WhatsApp API Integration with PHP/MySQL App

very good and proactive. i recommend Pankaj K

PHP
JavaScript
Software Architecture
MySQL
JSON

+3 more

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Flag of

Farid B.

5.0

$

3 months ago

Install Paid Shopify Theme

Thank you for all. good works

Website Design
HTML
Shopify Templates
Website Management
Shopify

+3 more

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Experience

Sr. Software Engineer

Jan, 2018 - Dec, 2020

•

2 years, 11 months

Einix Infotech Pvt LTD

Jan, 2018 - Dec, 2020

•

2 years, 11 months

Working as Sr Software Engineer

User Avatar

Casimir Y.

@casolerusse

 ·

my project

i hired penkaj k for my project. he delivered it before time , he is very fast and efficient. Even after delivery he continue to provide me an After sale services for free....for free, just to be sure tha i got what i need. very good guy. I strongly advice to hire him.

Jan, 2018 - Dec, 2020

•

2 years, 11 months

Sr. Software Engineer

Aug, 2012 - Feb, 2017

•

4 years, 6 months

Mission Splendid Great Digital Media Pvt Ltd

Aug, 2012 - Feb, 2017

•

4 years, 6 months

Working as Sr. Software Engineer Developing and Maintaining Various Web and Desktop Application in c# asp .net

Aug, 2012 - Feb, 2017

•

4 years, 6 months

References

User Avatar

John H.

@jshendryvw

 ·

Direct Project Manager

I had the opportunity to collaborate with Pankaj on a long-term .NET web application project, and I was thoroughly impressed by his reliability, professionalism, and deep technical knowledge. Over the course of the engagement, Pankaj consistently demonstrated a strong command of the .NET framework and maintained excellent communication throughout every phase of development. He approached the project with a high degree of accountability and precision, delivering quality code, staying receptive to feedback, and adapting quickly to evolving requirements. His ability to remain focused and dependable across a long-term engagement speaks volumes about his work ethic and collaborative mindset. I highly recommend Pankaj for any future development work and would be glad to work with him again should the opportunity arise.

User Avatar

Casimir Y.

@casolerusse

 ·

th projec owner

Absolutely fantastic! The freelancer resolved my issue incredibly fast and with great precision. Efficient, professional, and highly skilled. Will definitely work with them again!

Education

Kurukshetra University

2008 - 2011

•

3 years

Master of Computer Applications

Flag of

India

2008 - 2011

•

3 years

Kurukshetra University

2007 - 2008

•

1 year

Post Graduate Diploma in Computer Applications

Flag of

India

2007 - 2008

•

1 year

Kurukshetra University

2004 - 2007

•

3 years

Bachelor of Arts

Flag of

India

2004 - 2007

•

3 years

Certifications

P

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