About

Hi, I’m Kadir.

I’ve been building software for more than 10 years, most of it on PHP-based enterprise systems. With Symfony and Laravel I’ve delivered projects for public institutions, the energy sector, real estate, healthcare and e-commerce.

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Kadir YILDIRIM
Title
PHP Developer | Computer Engineer
Education
Computer Engineering (English)
Languages
Turkish · English (C1)
Contact
Contact page

How I work

I started my career building desktop applications with .NET, then moved to the web and specialised in the PHP ecosystem. Along the way I grew from developer into PHP team lead and software architect.

I take an active part in analysis, development, testing and release. In project presentations, kickoff meetings and user acceptance testing I bridge the engineering team and business units, and I care about raising team productivity through knowledge sharing and mentoring.

Experience

PHP Developer | Computer Engineer
Key Yazılım Çözümleri A.Ş.
08/2025 — Present
  • Developing and maintaining enterprise applications for real-estate valuation, mortgage and asset management.
  • Building and improving integrations with TAKBİS, MERNİS and other public institutions.
  • Internal and inter-institution integrations with REST and SOAP services.
  • Full-stack development with plain PHP and JavaScript.
  • Performance-focused database work on MSSQL, Oracle and PostgreSQL with stored procedures, functions and views.
PHP Developer | Computer Engineer
KlinikEase
01/2025 — 06/2025
  • System design of the application.
  • Database management and optimisation.
  • Development of the backend services.
Software Architect
Niltek Yazılım
08/2021 — 01/2025
PHP Developer PHP Team Lead Software Architect
  • National Smart Metering Systems: designed and built the integration layer covering 21 distribution and 21 retail companies; acted as technical lead.
  • R&D Energy Platform (EPDK): contributed to development in phase 2; development and management in phase 3.
  • Contributed to ADEYS (Emergency Inventory Management System) and the Ostim Employment Office career platform.
  • Güre ERP: user management, request, tender, warehouse, stock and approval hierarchy modules.
  • Project presentations, kickoff meetings and UAT; requirements analysis, documentation, risk management and mentoring.
Full-Stack Developer
Comer Yazılım
05/2021 — 07/2021
  • E-commerce project with Yii Framework; module-based admin panel features.
  • Integration of drag-and-drop panel components.
  • Shipment tracking module integrated with Aras Kargo, UPS, Yurtiçi, MNG and PTT.
.NET Developer
Ece Yazılım
03/2020 — 10/2020
  • Desktop applications with WinForms and DevExpress, focused on grids, forms and reporting.
  • Data processing on MSSQL; debugging and performance improvements.
Intern
Mentornity Bilişim
07/2018 — 08/2018

Education

Computer Engineering (English)
Cyprus International University
2014 — 2018
Computer Programming
Hitit University Vocational School
2012 — 2014

Technical skills

Languages & frameworks

PHPSymfonyLaravelYiiJavaScriptC#.NET 10.NET CoreWPFWinFormsJava

Databases & caching

PostgreSQLMSSQLOracleMySQLRedisRabbitMQ

APIs & security

RESTSOAPJWTLDAPOneSignal

DevOps & storage

GitDockerAzure DevOpsCI/CDGoogle CloudMinIO

Testing & documentation

PostmanSwaggerSoapUISelenium

Have a project in mind?

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

Get in touch LinkedIn