PHP Developer | Computer Engineer

I turn complex business processes into robust PHP systems.

I’m Kadir. For more than 10 years I’ve been building enterprise applications, integration layers and performance-focused database solutions for the public sector, energy, real estate, healthcare and e-commerce.

Kadir YILDIRIM

What I do

End-to-end backend development

I take an active role in every stage of the software lifecycle, from analysis to production.

Backend & APIs

Scalable services with Symfony, Laravel and plain PHP; REST and SOAP APIs.

Enterprise integrations

Integration layers that talk to public systems like TAKBİS, MERNİS and EPDK, and to the infrastructure of dozens of companies.

Databases & performance

Stored procedures, views and query optimisation on MSSQL, Oracle, PostgreSQL and MySQL.

Architecture & tech leadership

System design, team coordination, mentoring, and bridging business units with the engineering team.

Featured work

A selection of projects I built

Full portfolio

Tech stack

Technologies I work with

Languages & frameworks

PHPSymfonyLaravelYiiJavaScriptC#.NET 10.NET CoreWPFWinFormsJava

Databases & caching

PostgreSQLMSSQLOracleMySQLRedisRabbitMQ

APIs & security

RESTSOAPJWTLDAPOneSignal

DevOps & storage

GitDockerAzure DevOpsCI/CDGoogle CloudMinIO

Testing & documentation

PostmanSwaggerSoapUISelenium

Spoken languages

Turkish · NativeEnglish · C1

Experience

My career journey

Full experience
  1. 08/2025 — Present
    PHP Developer | Computer Engineer
    Key Yazılım Çözümleri A.Ş.
    Current
  2. 01/2025 — 06/2025
    PHP Developer | Computer Engineer
    KlinikEase
  3. 08/2021 — 01/2025
    Software Architect · PHP Team Lead
    Niltek Yazılım
  4. 05/2021 — 07/2021
    Full-Stack Developer
    Comer Yazılım
  5. 03/2020 — 10/2020
    .NET Developer
    Ece Yazılım

Have a project in mind?

For a new project, a collaboration or technical consulting, reach me by e-mail or on LinkedIn.