Fatih YILMAZ

At Sipay, I serve as Principal Software Developer in the fintech sector, leading the development and architecture of high-traffic payment systems. I design and maintain scalable backend services using PHP/Laravel as the core framework, supported by MySQL for data management and GoLang for performance-critical components. My responsibilities include ensuring system reliability under heavy transaction loads, optimizing critical payment flows, and mentoring the development team on best practices. By strategically integrating GoLang into our stack, I have improved throughput and reduced latency in key services, contributing to a more resilient and performant payment infrastructure.

Projects:

Sipay PF

Technologies used:

• PHP
• Laravel
• PostgreSQL
• MySQL
• GoLang
• Redis
• Javascript
• HTML/CSS

At Hepsiglobal, the international e-commerce initiative of Hepsiburada, one of Turkey's largest e-commerce platforms, I am responsible for developing and maintaining APIs that support our frontend and mobile applications. My role involves designing and implementing robust API solutions to ensure seamless integration and optimal performance across various platforms. I work closely with cross-functional teams to understand requirements, address challenges, and deliver high-quality software solutions.

Additionally, I have been integrating GoLang into our technology stack to enhance performance and scalability. By leveraging GoLang's efficiency and concurrency capabilities, I have optimized several backend processes, resulting in improved response times and reduced server load. My efforts have contributed to a more scalable and resilient system, capable of handling increased traffic and complex operations.

Projects:

Hepsiglobal

Technologies used:

• PHP
• Symfony
• PostgreSQL
• MySQL
• GoLang
• Redis
• Elasticsearch
• Javascript
• HTML/CSS

At Bircom Telekomünikasyon, I worked as a Senior Software Specialist developing microservice-oriented backend systems for the telecommunications and IT services domain. I was responsible for building and maintaining three interconnected projects: ProductManagement, a centralized service handling all product-related data including platforms, campaigns, and features; PaymentManagement, a dedicated service managing all payment operations; and KazananBayi, a B2B e-commerce platform that consumed services from the other projects while serving end users through its own panel and database. This role strengthened my experience in designing service-oriented architectures, managing cross-project dependencies, and building systems where multiple services communicate reliably to deliver a unified product experience.

Projects:

Kazananbayi (e-Commerce B2B)

Technologies used:

• PHP
• Symfony
• MySQL
• Redis
• Javascript
• HTML/CSS

At Beework, a software agency, I worked as a PHP Developer on a diverse range of client projects spanning CRM systems and e-commerce platforms. This environment allowed me to rapidly expand my technical skills by tackling varied business domains and requirements. I was involved in both backend and frontend development, building and maintaining web applications using PHP/Laravel on the server side and JavaScript, jQuery, and Vue.js on the frontend. Working across multiple concurrent projects sharpened my ability to adapt quickly to different codebases, collaborate with diverse stakeholders, and deliver tailored solutions within tight deadlines.

Projects:

Türkiye Teknoloji Takımı - T3 (CRM)

Menavisa (Middle East North Africa Visa) (CRM)

E-Yeniad (E-Commerce)

HarfKapida (E-Commerce)

Şeref Ambalaj (CRM)

BeeCRM

Technologies used:

• PHP
• Laravel
• MySQL
• jQuery
• Javascript
• Vue.JS
• HTML/CSS

At Alphatik, a startup environment, I began my professional career as a Back End PHP Developer. I was responsible for designing and developing RESTful APIs using PHP and the Laravel framework, serving as the backend foundation for web and mobile applications. Working in a small team allowed me to take ownership of core backend services, gain hands-on experience with the full API development lifecycle, and understand the importance of building reliable, well-documented endpoints that mobile teams depend on. This role laid the foundation for my backend development expertise and deepened my understanding of building scalable, consumer-facing digital products from the ground up.

Projects:

Directik (Mobile Application)

Çözücü (Mobile Application)

Technologies used:

• PHP
• Laravel
• MySQL
• HTML/CSS
• jQuery
• Javascript