Irfan A.
Full Stack .NET/Core Developer (C#) | QuickBooks Integration Expert
🧩 About Me I’m a Full Stack .NET Developer and QuickBooks Integration Expert with extensive experience in building robust, high-performance web and desktop applications. I specialize in C#, .NET Core, ASP.NET MVC, and JavaScript frameworks (React, jQuery), combined with deep expertise in QuickBooks Desktop, Online, and POS integrations. ⚙️ What I Offer ✅ QuickBooks Integration & Custom Solutions 🔹Integrations with QuickBooks Desktop, Online, and POS (all versions) 🔹Sync external data sources with QuickBooks (databases, web apps, CRMs, etc.) 🔹Develop custom QuickBooks add-ins and utilities 🔹Web Connector, SDK, and REST API-based integrations 🔹Automated data import/export, invoice sync, and inventory management 🔹Integrations with SharePoint, Google Sheets APIs, Wix, Shopify, Salesforce, WooCommerce, and other third-party systems ✅ .NET Full Stack Development 🔹Web applications using ASP.NET MVC / .NET Core (6, 7, 8, 9) 🔹Backend services and RESTful APIs 🔹Database design and optimization (MS SQL, T-SQL, Dapper, Entity Framework) 🔹Responsive UI using HTML5, CSS, JavaScript, React, jQuery 🔹WinForms and WPF for desktop applications 🔹Integration with third-party APIs and payment gateways ✅ Other Services 🔹System analysis and architecture design 🔹Debugging, testing, and optimization 🔹Technical consulting for scalable software solutions 🧠 Skills Summary ✅ Languages & Frameworks: 🔹C#, 🔹VB.NET 🔹.NET Core, 🔹ASP.NET MVC 🔹Entity Framework 🔹 LINQ ✅ Frontend: 🔹React 🔹jQuery 🔹HTML5, 🔹CSS, 🔹JavaScript ✅ Database: 🔹SQL 🔹Server 🔹SQLite 🔹MySQL 🔹PostgreSQL ✅ QuickBooks: 🔹Desktop (SDK) 🔹Online (API) 🔹POS 🔹Web Connector ✅ Integrations: 🔹SharePoint 🔹Google Sheets 🔹Wix 🔹Shopify 🔹Salesforce 🔹WooCommerce 🔹Payment Gateways Integrations ✅ Other: 🔹REST APIs 🔹WinForms 🔹WPF 💡 Why Choose Me I take pride in delivering clean, maintainable, and performance-driven code. My goal is to help businesses integrate QuickBooks seamlessly or build full-stack .NET applications that solve real-world business problems. If you’re looking for a reliable and detail-oriented developer who understands both QuickBooks ecosystems and enterprise-level .NET development, let’s connect and bring your project to life.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $2.5k
Billed in all: $39,750$40k
$2.5k in the last 6 months
Across 35 contracts
Earnings, last 30 days
Skill rankings: #1 in 1 skill of 15
Rarest: top 13% in jQuery, of 8,973. Ranked by MRR among everyone on Upwork with the skill.
- CardConnect2 freelancers · 🇵🇰 #1Top 50%🇵🇰#1 of 1
- #334Desktop Application1,674 freelancers · 🇵🇰 #47Top 20%🇵🇰#47 of 261
- #414ASP.NET MVC2,619 freelancers · 🇵🇰 #74Top 16%🇵🇰#74 of 518
- #501Payment Gateway Integration2,302 freelancers · 🇵🇰 #128Top 22%🇵🇰#128 of 608
- #547.NET Framework2,944 freelancers · 🇵🇰 #79Top 19%🇵🇰#79 of 432
- #618.NET Core3,067 freelancers · 🇵🇰 #97Top 20%🇵🇰#97 of 523
- #1,211jQuery8,973 freelancers · 🇵🇰 #133Top 13%🇵🇰#133 of 1,261
- #1,388Intuit QuickBooks5,208 freelancers · 🇵🇰 #324Top 27%🇵🇰#324 of 1,053