Emirhan Göl

Software Developer

I've been building backends with .NET for 4+ years. I work on e-commerce platforms, payment infrastructure and ERP integrations, writing maintainable services that connect different systems reliably.

See my work Get in touch

Istanbul
github
linkedin

~ $whoami

Emirhan Göl — Software Developer

~ $cat focus.txt

e-commerce · payment systems · erp integrations

// about

I started my software career as an intern. Today I build B2B and B2C e-commerce platforms, CRM applications and the integration services that keep them running, all on the .NET ecosystem. To me, sustainable, readable and maintainable code matters as much as the work itself.

API development: RESTful services with ASP.NET Core Web API, SOAP web services and third-party system integrations.
Background services: Scheduled jobs and integration automation with Worker Service and Windows Service.
Databases: Query and performance optimization on MS SQL Server; data access layers with Entity Framework and Dapper.
Architecture: Sustainable, maintainable code with layered architecture, OOP and generic structures.

"backend"

C#
.NET Core
.NET Framework
ASP.NET MVC
ASP.NET Core Web API
Worker Services
Windows Service

"data"

MS SQL Server
Entity Framework
Dapper

"integration"

REST
SOAP
RestSharp
iyzico
PayTR
Garanti Sanal POS

"tooling"

Autofac
AutoMapper
FluentValidation
Git

"frontend"

JavaScript
Razor
HTML
CSS

// Emirhan.cs — me, in short
namespace EmirhanGol;

public sealed class Emirhan : Developer
{
    public string Role => "Software Developer";
    public string Experience => "4+ years · .NET";
    public string City => "Istanbul";

    public string[] Focus =>
    [
        "E-commerce (B2B & B2C)",
        "Payment systems",
        "ERP integrations",
    ];

    public string[] Principles =>
        ["Layered architecture", "OOP", "Readable code"];

    // Got a project? Start here.
    public Task ContactAsync(Message message) =>
        Mail.SendAsync("[email protected]", message);
}

// experience

2025 — 2026

Software Developer @ Deneyimsoft

Building backend services and APIs with .NET for e-commerce platforms, payment system and ERP integrations.
2022 — 2025

Software Developer @ Ersa Yazılım

Enterprise web applications with C# and ASP.NET MVC, Web API services, payment and ERP integrations; SQL Server design and optimization.
2021 — 2022

IT Support Intern @ Ersa İth. ve Tic. A.Ş.

Technical support and system administration; first contact with ERP and accounting software.

education

Computer Programming Nişantaşı University · Istanbul
2022 — 2024

// work

B2C E-Commerce

Backends for consumer-facing stores: product and cart management, order and shipping flows, admin panels. ASP.NET MVC SQL Server Dapper

Product
Cart
Payment
Order
Shipping

problem: Keeping product, cart, payment and shipping steps consistent and fast, even under heavy traffic.
solution: Layered architecture with lightweight data access via Dapper; order, shipping and admin flows in a single backend.
result: A maintainable store infrastructure, manageable end to end from product setup to shipment tracking.

B2B E-Commerce

Ordering platforms for dealers and corporate customers: account-specific price lists, bulk orders, approval flows and invoice integration. ASP.NET MVC Web API Entity Framework

Dealer
Price list
Order
Approval
Invoice

problem: Applying a different price list, discount and approval rule for every dealer correctly on one platform.
solution: Account-specific price lists, bulk ordering, multi-step approval flows and invoice integration.
result: Dealers order at their own prices; the process from approval to invoice is tracked in one place.

Payment Systems

3D Secure payments, installments, refunds/cancellations and callback/notification handling with iyzico, PayTR and Garanti Virtual POS. ASP.NET Core Web API 3D Secure iyzico PayTR

Cart
Virtual POS
3D Secure
Callback
Order

problem: Unifying providers with different APIs, 3D Secure and notification flows into a single payment experience.
solution: iyzico, PayTR and Garanti Virtual POS integrations; installments, refunds/cancellations and verified callback handling.
result: Payment results always match their orders; refunds and cancellations are managed from the admin panel.

ERP Integrations

Two-way sync of stock, price, customer account, order and invoice data between e-commerce platforms and Mikro, Canias and Uyumsoft. Worker Service SOAP REST Mikro · Canias · Uyumsoft

E-commerce
Worker Service
Mikro · Canias · Uyumsoft

problem: Keeping stock, price, account, order and invoice data current and consistent between e-commerce and ERP.
solution: Scheduled two-way sync with Worker Service and Windows Service; SOAP/REST services, data mapping, error handling and logging.
result: Both systems work with the same data, with no manual transfers.

Web Design

Multilingual, SEO-friendly, mobile-first websites for companies, from design to launch. ASP.NET Core Razor JavaScript CSS

Design
Razor
SEO
Launch

problem: Company sites that load fast, show up in search and support more than one language.
solution: Server-rendered, multilingual, SEO-friendly and mobile-first pages with no unnecessary libraries.
result: Fast, easy-to-manage sites that work well on mobile. This site was built the same way.

// contact

A project, an integration or just a question. Drop me a line.

[email protected]