Backend Systems Developer 

Biography

Hi, I'm Sami Ayaz. I am a Senior .NET Developer specializing in enterprise ERP, B2B, and B2C systems. I have been developing software since 2018.

Throughout my career, I have primarily focused on building SAP Business One add-ons, e-transformation (e-Invoice, e-Archive) automation, banking integrations, and high-volume e-commerce data synchronization pipelines.

My core focus is on modern web and backend architecture. I deeply care about writing clean code, solid data design, and shipping resilient systems that hold up in production environments.

Certificates

Skills

Backend & .NET

Backend.NETC#.NET CoreASP.NETREST APIEF CoreDapperIdentityFluentValid.Hangfire
  • C#
  • .NET / .NET Core
  • ASP.NET Core
  • REST API
  • EF Core
  • Dapper
  • Identity (JWT)
  • FluentValidation
  • Hangfire

Architecture

ArchitectureLayeredRepo/UoWOOPSOLIDDTOPatterns
  • Layered Architecture
  • Repository & Unit of Work
  • OOP
  • SOLID
  • DTO
  • Design Patterns

Data

DataMS SQLT-SQLPostgreSQLRedisMySQL
  • MS SQL Server
  • T-SQL
  • PostgreSQL
  • Redis
  • MySQL

Tools

ToolsGitHubDockerxUnitNUnitIISSwaggerFlutter
  • Git/GitHub
  • Docker
  • xUnit
  • NUnit
  • IIS
  • Swagger/OpenAPI
  • Flutter

Experience

  • Senior .NET Developer (Hybrid) @AVE BT

    May 2026 - June 2026

    Following a corporate spin-off from Be1 SAP Business One, I continued my processes of Add-On development, GİB/banking integrations, B2B services, and database architecture with the exact same technical scope and responsibilities under AVE BT.

  • Senior .NET Developer (Hybrid) @Be1 SAP Business One

    March 2024 - May 2026
    • Designed and developed modular .NET Add-On applications integrated with the SAP Business One ERP infrastructure.
    • Managed and developed technical processes for GİB (e-Invoice, e-Archive, e-Waybill, e-Ledger) and Banking integrations.
    • Created and managed integration services providing high-volume data synchronization between B2B e-Commerce platforms and SAP systems.
    • Developed and managed complex T-SQL queries, Stored Procedures, Views, and Trigger structures on MS SQL Server.

  • Full-Stack Web Developer (Remote) @Cross4Solution Technology

    January 2022 - June 2022
    • B2C ticket sales and e-commerce platform using PHP & Laravel.
    • Dynamic interfaces with JavaScript & Bootstrap and REST API integration.

  • Software Developer (On-Site) @Dehasoft

    December 2018 - June 2021
    • Enterprise ERP solutions, inventory management systems, and financial software with .NET & C#.
    • Bidirectional B2B/B2C data synchronization and layered architecture.

Education