Available for opportunities

BERKAY BAYAR

Software Engineer crafting scalable backends , modern frontends , and production-grade systems

View My Work Get in Touch
01 / ABOUT

Building the Future,
One Line at a Time

I'm a Computer Engineering student based in Turkey, with a deep passion for creating elegant software solutions that scale. My journey spans from gaming infrastructure to enterprise SaaS platforms.

With hands-on experience in the .NET ecosystem and modern frontend frameworks, I specialize in building systems that are not just functional, but architecturally sound and maintainable.

Currently seeking opportunities to bring my expertise in Clean Architecture, CQRS, and distributed systems to a professional enterprise environment.

3+
Years Experience
10+
Projects Completed
B2B
Active SaaS Products
∞
Curiosity & Growth
02 / EXPERIENCE

Where I've Contributed

ZDK Network

Software Engineer (Core Team)

2022 – 2025
  • ▹ Developed scalable backend microservices for authentication, billing, and in-game marketplaces using .NET 6+ and PostgreSQL
  • ▹ Architected distributed systems with Redis for caching and RabbitMQ for async processing
  • ▹ Built comprehensive Admin Panels and established CI/CD pipelines via GitHub Actions
  • ▹ Collaborated with the reverse engineering team for seamless data synchronization

Independent Developer

Full Stack Developer

2023 – Present
  • ▹ Architecting and maintaining Trendyol Analytics SaaS for active B2B subscribers
  • ▹ Delivering custom web and automation solutions for global clients using .NET and React
  • ▹ Managing end-to-end development lifecycles, from requirements to cloud deployment
03 / PROJECTS

Featured Work

COMMERCIAL B2B

Trendyol Analytics SaaS

A multi-tenant e-commerce analytics platform used by active sellers on a subscription basis. Transformed from a custom freelance solution into a scalable SaaS product.

.NET 8 EF Core MSSQL React CQRS Hangfire
Role: Sole Developer & Product Owner
OPEN SOURCE

TrendyolClient.Sharp

A .NET API wrapper for the Trendyol Marketplace. Type-safe SDK encapsulating complex HTTP endpoints for Product, Order, and Refund integrations.

C# .NET REST API SDK
View on GitHub
DEVELOPER TOOL

ExcelQueryCLI

High-performance CLI for bulk Excel manipulation. Multi-threaded tool parsing XML/JSON query files with parallel processing for maximum speed.

.NET 8 EPPlus CLI Parallel Processing
View on GitHub
INFRASTRUCTURE

Gaming Platform Backend

Comprehensive backend infrastructure for game server hosting. Microservices architecture handling authentication, billing, and real-time player data processing.

.NET PostgreSQL Redis RabbitMQ Docker
04 / SKILLS

Technical Arsenal

Languages

C# ★ TypeScript Python Go C++ Lua

Backend

.NET 8 ★ ASP.NET Core MediatR Hangfire RabbitMQ

Frontend

React.js ★ Next.js Blazor Tailwind

Data & Storage

SQL Server PostgreSQL MongoDB Redis EF Core

DevOps & Tools

Docker GitHub Actions CI/CD Serilog

Architecture

Clean Architecture ★ CQRS Microservices DDD
05 / CONTACT

Let's Build
Something Great

I'm currently looking for internship and job opportunities. Whether you have a question or just want to say hi, I'll do my best to get back to you!

berkaybayar@pm.me +90 552 567 09 77