You will get a scalable microservices architecture in ASP.NET Core and Node.js/ Angulur
Project details
Are you looking for a robust, scalable, and secure web application or custom API integration? With extensive experience as a Senior Technical Consultant or Full Stack Developer, I specialize in building enterprise-grade full-stack solutions and complex fintech/ custom web applications architectures.
What sets me apart is my deep understanding of the complete software development lifecycle. I don't just write code; I architect solutions. From gathering complex business requirements to deploying scalable microservices on AWS, I ensure your technology aligns perfectly with your business goals.
My core stack includes Angular 21 for dynamic, responsive frontends, and ASP.NET Core or Node.js (Express) for high-performance, secure backend APIs. I have a proven track record of integrating complex third-party services, particularly in the fintech. Ecommerce and Custom Web space, including Plaid, Orum Payments, Xero, QuickBooks Online, and Zoho etc.
Whether you need a complete SaaS platform built from scratch, a seamless payment gateway integration, or a scalable microservices architecture, I deliver clean, documented, and maintainable code. Let's build something exceptional together!
What sets me apart is my deep understanding of the complete software development lifecycle. I don't just write code; I architect solutions. From gathering complex business requirements to deploying scalable microservices on AWS, I ensure your technology aligns perfectly with your business goals.
My core stack includes Angular 21 for dynamic, responsive frontends, and ASP.NET Core or Node.js (Express) for high-performance, secure backend APIs. I have a proven track record of integrating complex third-party services, particularly in the fintech. Ecommerce and Custom Web space, including Plaid, Orum Payments, Xero, QuickBooks Online, and Zoho etc.
Whether you need a complete SaaS platform built from scratch, a seamless payment gateway integration, or a scalable microservices architecture, I deliver clean, documented, and maintainable code. Let's build something exceptional together!
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$200
|
Standard
$500
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 30 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 7 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$150 - $600
Additional Revision
+$100
Additional Page
(+ 3 Days)
+$200
Design Customization
(+ 3 Days)
+$150
Content Upload
(+ 1 Day)
+$50
Responsive Design
(+ 2 Days)
+$200Frequently asked questions
About Harpreet
Full-Stack .NET & AI Engineer | Generative AI | Azure | RAG | OpenAI |
Rajpura, India - 9:22 pm local time
I am a **Senior Full Stack Developer, .NET Architect, and AI Solutions Engineer** with **15+ years of experience** building scalable enterprise applications, AI-powered solutions, and cloud-native platforms. I specialize in delivering modern software using **.NET Core, ASP.NET Core, Azure, OpenAI, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), Semantic Kernel, and Microsoft.Extensions.AI** to help businesses automate workflows, enhance user experiences, and accelerate digital transformation.
My expertise spans enterprise software, SaaS products, FinTech platforms, AI copilots, intelligent automation, and cloud applications. I transform complex business requirements into secure, maintainable, and high-performance solutions that scale.
𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
**Backend Development**
* .NET Core, ASP.NET Core, C#
* REST APIs, Web APIs, Minimal APIs
* Microservices Architecture
* Entity Framework Core
* Node.js (Express)
**𝐀𝐈 & 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐈 **
* OpenAI (GPT Models)
* Azure OpenAI Service
* Large Language Models (LLMs)
* Retrieval-Augmented Generation (RAG)
* Semantic Kernel
* Microsoft.Extensions.AI
* AI Chatbots & AI Copilots
* Prompt Engineering
* AI Agents & Workflow Automation
* Vector Databases & Knowledge Retrieval
**𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭**
* Angular 17+
* React
* React Native (Expo)
* TypeScript
* JavaScript
* HTML5, CSS3
**𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬**
* Microsoft Azure
* Azure App Services
* Azure Functions
* Azure AI Services
* AWS
* Docker
* CI/CD Pipelines
* GitHub Actions
* Azure DevOps
**𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬**
* SQL Server
* MongoDB
* MySQL
* PostgreSQL
**𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 & 𝐅𝐢𝐧𝐓𝐞𝐜𝐡 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬**
* Plaid
* Orum
* Xero
* QuickBooks
* Zoho
* Third-party REST APIs
* Payment Gateway Integration
# 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐫𝐢𝐧𝐠 𝐭𝐨 𝐘𝐨𝐮𝐫 𝐏𝐫𝐨𝐣𝐞𝐜𝐭
✅ Design scalable, cloud-native architectures using **.NET Core, ASP.NET Core, Azure, and Microservices**
✅ Build AI-powered applications with **OpenAI, Azure OpenAI, LLMs, RAG, Semantic Kernel, and Microsoft.Extensions.AI**
✅ Develop secure, high-performance enterprise applications and SaaS platforms
✅ Lead projects from architecture and planning to development, deployment, and ongoing optimization
✅ Deliver clean, maintainable, production-ready code following industry best practices
Whether you're building an AI-powered product, modernizing a legacy .NET application, creating enterprise software, or launching a scalable SaaS platform, I can help you build reliable, future-ready solutions that drive business growth.
Let's discuss your project and build something exceptional together.
𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬:
.NET Core, ASP.NET Core, Azure, OpenAI, Azure OpenAI, LLM, RAG, Semantic Kernel, Microsoft.Extensions.AI, AI Agent, AI Copilot, Microservices, SaaS, C#, Entity Framework Core, Docker, GitHub Actions, Azure DevOps, REST APIs, Cloud-Native**, which can improve discoverability on platforms like Upwork and LinkedIn.
Steps for completing your project
After purchasing the project, send requirements so Harpreet can start the project.
Delivery time starts when Harpreet receives requirements from you.
Harpreet works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Analysis & Architecture Design
I will thoroughly review your project brief, design the database schema (MySQL/MongoDB), and map out the API endpoints and microservices architecture before coding begins.
Active Sprint Development
I will build the application using Angular (Frontend) and ASP.NET Core/Node.js (Backend). You will receive regular progress updates as core features and API integrations are completed.