Amazon SP-API Developer | Senior .NET / C# Developer

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I'm a Senior .NET Developer with 15+ years of software development experience, specializing in Amazon Selling Partner API (SP-API), C#, ASP.NET Core, Amazon Seller Central integrations, e-commerce platforms, SaaS applications, and API-driven systems.

I build and integrate Amazon SP-API solutions for sellers, agencies, and e-commerce platforms, including marketplace data synchronization, orders, listings, inventory, reports, feeds, catalog data, finances, authentication, and background processing.

• 🛒 Amazon SP-API Developer
• 🔗 Amazon Selling Partner API
• 💻 Amazon SP-API with C# / .NET
• 🏪 Amazon Seller Central API Integration
• 🌎 Amazon Marketplace Integration
• 📦 Amazon FBA / Seller Integrations
• 🔐 Amazon SP-API Authentication & LWA
• 📋 Amazon Orders API
• 📊 Amazon Reports API
• 📤 Amazon Feeds API
• 🏷️ Amazon Listings & Catalog APIs
• 📦 Amazon Inventory Integration
• 💰 Amazon Finances API
• 🔄 Marketplace Data Synchronization
• ⚙️ API Integration & Automation
• 🟦 C# / .NET / ASP.NET Core
• 🚀 E-commerce SaaS Development

I focus on building reliable and maintainable integrations with the Amazon Selling Partner API (SP-API) and related Amazon seller services.

• Selling Partner API authentication
• Login with Amazon (LWA)
• OAuth authorization
• Access & refresh token management
• Restricted Data Tokens (RDT)
• Orders API
• Listings Items API
• Catalog Items API
• Reports API
• Feeds API
• Inventory API
• Product Pricing API
• Finances API
• Notifications
• Marketplace and region management
• Rate limiting
• Retry and error handling
• Background synchronization
• Scheduled data processing
• Multi-seller integrations
• Multi-marketplace architectures

Amazon Seller / Seller Central
              │
              ▼
     Login with Amazon (LWA)
              │
              ▼
       Amazon SP-API
              │
              ▼
    .NET / ASP.NET Core API
              │
      ┌───────┼────────┐
      ▼       ▼        ▼
   Orders  Listings  Inventory
      │       │        │
      ├───────┼────────┤
      ▼       ▼        ▼
 Reports    Feeds    Catalog
              │
              ▼
       Background Jobs
              │
              ▼
      SQL / PostgreSQL
              │
              ▼
       SaaS / E-commerce

I'm particularly interested in building:

• Amazon marketplace automation
• Amazon Seller Central integrations
• Amazon SP-API applications
• E-commerce SaaS platforms
• Marketplace management systems
• API integration platforms
• Data synchronization systems
• High-reliability backend services
• Cloud-native applications
• Business automation software
• Developer tools

I'm building and maintaining projects around:

• 🛒 Amazon marketplace & SP-API integrations
• 🌐 SaaS platforms
• ⚙️ Developer tools
• 📊 Data and information platforms
• 🔐 Privacy-focused web services
• ⌨️ Online typing and examination platforms

More public reference projects demonstrating Amazon SP-API, C#, and .NET architecture will be added over time.

My current professional focus is:

Building reliable Amazon marketplace integrations and SaaS applications using C#, .NET, ASP.NET Core, cloud services, databases, and modern API architecture.

Looking for an experienced developer for an Amazon SP-API, Amazon Seller Central, e-commerce, SaaS, or .NET project?

I'm available for freelance, contract, consulting, and long-term development work.

• Amazon Selling Partner API (SP-API)
• Amazon Seller Central integrations
• Login with Amazon (LWA)
• OAuth authentication
• Orders API
• Listings API
• Inventory API
• Reports API
• Feeds API
• Catalog API
• Pricing API
• Finances API
• Notifications
• Multi-marketplace integrations
• Data synchronization
• Rate limiting & retry handling

• C#
• .NET / ASP.NET Core
• REST API development
• Backend architecture
• SQL Server / PostgreSQL
• Redis
• Background processing
• AWS / Azure
• Docker
• SaaS applications
• E-commerce platforms

Freelance · Contract · Remote · Consulting · Long-term Development

📩 Email: virenderverma@live.com

Let's build it.

📩 Contact Me · 💼 Hire Me on Upwork

Amazon marketplace integrations, SaaS platforms, developer tools, and modern .NET applications.

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