I will integrate ecommerce apis erp CRM shipping and payment systems

Y
yunusozx
Y
yunusozx
Yunus Ozdemir
integrate ecommerce apis erp CRM shipping and payment systems
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integrate ecommerce apis erp CRM shipping and payment systems

About this gig

Are you wasting time manually moving orders, inventory, invoices, shipping data, or customer information between different systems?


I build reliable custom API integrations and e-commerce automation solutions using ASP.NET Core and modern backend technologies.


I can help you connect:

E-commerce stores and marketplaces

ERP and CRM systems

Payment gateways

Shipping and fulfillment providers

Accounting and invoicing systems

REST APIs, webhooks and third-party services


Typical solutions include order synchronization, inventory updates, automated invoicing, shipment tracking, scheduled jobs, webhook processing and custom backend services.


I work with .NET, ASP.NET Core, SQL Server/PostgreSQL, Redis, RabbitMQ, Docker and modern API architectures.


Every integration is different. Please message me before ordering so I can review the APIs, documentation and required workflow and recommend the correct package.

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Operating systems
    • Databases

  • Programming language

    • ASP.NET

  • Frontend framework

    • Angular
    • Next.js

  • Backend framework

    • Other

Get to know Yunus Ozdemir

Yunus Ozdemir

Senior Software Developer

  • FromTurkey
  • Member sinceMar 2021
  • Avg. response time1 hour

  • Languages

    English, Turkish
I help SaaS teams and software agencies integrate third-party APIs, fix .NET backend issues, and keep existing applications running reliably. I have worked on .NET backends since 2020, building and maintaining APIs, CRM systems, real-time applications, and integrations across enterprise and freelance projects. I clarify the problem and acceptance criteria, review the existing implementation, and agree on a manageable scope before making changes. Core technologies: C#, ASP.NET Core, REST APIs, SQL Server, PostgreSQL, EF Core, Dapper, Redis, RabbitMQ, MassTransit, Hangfire, Docker, and xUnit.

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