Available for Engineering Roles

BERKAY BAYAR

Software Engineer specializing in the .NET ecosystem, Clean Architecture, and building production-grade infrastructure. high-performance backends , distributed systems , and scalable B2B SaaS

View My Work Get in Touch
01 / ABOUT

Engineering Scalable
Solutions That Matter

I'm a Software Engineer with a background in Computer Engineering from Konya Technical University. My experience spans building high-traffic infrastructure handling millions of requests to developing specialized B2B SaaS products.

Deeply specialized in the .NET ecosystem (.NET 8+), [cite: 9] I focus on solving complex architectural challenges. I design systems that are maintainable, testable, and capable of handling heavy concurrency.

Currently seeking opportunities to bring my expertise in CQRS, Microservices, and Cloud Infrastructure to a professional enterprise engineering team.

3+
Years Experience
12k+
Users Managed
20M+
Monthly Requests
500%
Perf. Optimization
02 / EXPERIENCE

Where I've Contributed

ZDK Network

Backend Software Engineer

2022 – 2025
  • ▹ Architected core backend APIs managing 12,000+ user accounts and serving 20 million+ monthly requests via Cloudflare
  • ▹ Built a custom desktop game launcher using WPF for CDN installations and file integrity auto-repair [cite: 20]
  • ▹ Developed automated indexing tools to extract game binary data for a public searchable web database [cite: 22]
  • ▹ Implemented CI/CD pipelines via GitHub Actions to automate deployments for backend APIs and developer tools [cite: 23]

Independent Developer

Full Stack Developer

2023 – Present
  • ▹ End-to-end ownership of Trendyol Analytics SaaS, a multi-tenant B2B platform using Clean Architecture and CQRS [cite: 28, 34]
  • ▹ Optimized legacy database tables to significantly improve API response times for business reporting [cite: 29]
  • ▹ Delivering custom React dashboards and .NET automation tools for international clients [cite: 30]
03 / PROJECTS

Featured Work

COMMERCIAL B2B

Trendyol Analytics SaaS

A multi-tenant B2B platform helping vendors track data. Built using Clean Architecture and CQRS with nightly Hangfire synchronization. [cite: 28, 34, 35]

.NET 8 PostgreSQL Hangfire CQRS Clean Architecture
Role: Lead Engineer
OPEN SOURCE

TrendyolClient.Sharp

A type-safe C# wrapper for the Trendyol Developer API, simplifying integration for the .NET developer community. [cite: 38]

C# .NET API Design
View on GitHub
PERFORMANCE TOOL

ExcelQueryCLI

Multi-threaded command-line tool for bulk Excel manipulation using parallel processing to achieve a 500% performance increase. [cite: 41]

C# .NET Parallel Processing
View on GitHub
04 / SKILLS

Technical Arsenal

Languages

C# ★ TypeScript T-SQL PostgreSQL

Backend

.NET 8+ ★ ASP.NET Core EF Core WPF RabbitMQ Hangfire

Frontend

React.js ★ Next.js Tailwind CSS

Architecture

Clean Architecture ★ Microservices CQRS RESTful APIs

DevOps & Tools

Docker GitHub Actions Redis Git
05 / CONTACT

Let's Build
Something Great

I'm currently looking for engineering opportunities where I can contribute to scalable systems. Whether you have a technical question or a job opening, I'd love to hear from you.

View CV [email protected] +90 552 567 09 77