Deepak V.

Full-Stack Developer (.NET | React | Angular) — Amazon SP-API, MWS & Marketplace Automation Specialist I build custom software that automates the parts of running an online business that eat up the most time: syncing inventory across marketplaces, pulling and reconciling reports, calculating true product profitability, and keeping listings and pricing accurate at scale. Over 14,000+ hours and 100% Job Success on Upwork, I've worked mostly with Amazon sellers and e-commerce operators who needed reliable backend systems instead of manual spreadsheet work. 10+ years as a full-stack developer (C#, .NET, Angular, React), including 5+ years focused specifically on marketplace software: Amazon SP-API, Amazon MWS, Amazon Vendor Central, and integrations with eBay, Walmart, and other retail platforms. What I can help with: ✓ Custom software for Amazon and multi-marketplace sellers ✓ Amazon SP-API integration — report downloads, inventory updates, feed submissions ✓ Marketplace API integration — Amazon MWS, eBay API, Walmart API ✓ Web scraping for e-commerce/retail sites, including AJAX-heavy and captcha-protected sites ✓ Drop-shipping automation (for example, Walmart to Amazon US, or Amazon US to Amazon Canada) ✓ Amazon profit/fee calculation tools from CSV or API data ✓ ASIN ↔ UPC conversion tools ✓ Price comparison and price-monitoring tools ✓ Custom reporting dashboards (including Power BI) ✓ Amazon product listing — manual entry or bulk upload via CSV/Excel ✓ Desktop, web, and API development in .NET and Node.js Core technical expertise: Backend — ASP.NET Core, MVC, Web API, C#, RESTful APIs and microservices, built on SOLID principles Frontend — Angular, React, Blazor, HTML5, CSS3, JavaScript/TypeScript Database — SQL Server, Entity Framework, LINQ, query optimization, migrations Cloud & DevOps — Microsoft Azure (Functions, App Services, SQL, Blob Storage), CI/CD with Azure DevOps Sites I've built scraping/integration pipelines for: Walmart, Bed Bath & Beyond, Home Depot, Overstock, Amazon (US & UK), Sears, Best Buy, Tiger Direct, OfficeMax, and Office Depot. Selected projects: Inventory Management System — Built services to add products, update pricing, and sync inventory to Amazon via the Amazon MWS API. Amazon Profit & Fee Analyzer (NDA) — Integrated multiple Amazon APIs to calculate fees, product-level profit, and sales performance. Amazon Product Search Tool — Used the Product Advertising API to match and search products by UPC/ASIN/EAN against a source catalog. Amazon Data Scraper + ShipWorks Integration — Built a scheduled service that scrapes Amazon customization fields via MWS and syncs them into ShipWorks. Product Funnel & Review System — Built a sales funnel that increased conversions for an existing client, with ShipStation and ActiveCampaign integration for lead and order syncing. Windows-to-Web Migration — Migrated a legacy desktop application to a modern web platform, adding new features along the way. Chrome Extension for Amazon MWS — Built a browser extension integrated directly with the Amazon MWS API. If you're dealing with manual marketplace processes that should be automated, or need an Amazon/e-commerce integration built right the first time, I'd be glad to talk through your project.