Building production systems end-to-end
Technical Founder.
Hands-on CTO.
Systems Architect.
I design, build, secure and operate complex software systems — from MMORPG game servers and cross-platform clients to data platforms, infrastructure, security tooling and the engineering teams behind them.
Programming since 1998 · Commercial software since 2007 · Founder of KO1 since 2011
CORE
Architecture
Own the whole system
01Client
02Network
03Security
04Backend
05Data
06Infra
07Ops
08Team
About
I do not stop at the architecture diagram.
I am a hands-on Technical Founder, CTO and Principal Software & Systems Architect. My programming journey started in 1998, and I have been building commercial software and infrastructure since 2007.
I founded PvPKnight in 2007 and KnightOnline1 (KO1) in 2011. What began as a parallel engineering venture became my full-time focus in 2019 and later formed a major technical foundation for GameSuDo.
Today I lead a 16-person organization while remaining deeply involved in critical architecture and engineering. I personally designed and built roughly 90% of the core technical foundation, and I trained the engineers who now extend that ecosystem.
My strongest capability is not a specific language or framework. It is the ability to understand a difficult problem end-to-end, build the critical parts, put the system into production, secure and operate it, then build a team capable of taking it further.
Technical range
Deep enough to go low-level.
Broad enough to own production.
Architecture → implementation → data → network → security → infrastructure → operations → people.
Software & Systems Architecture
Distributed systems, backend architecture, APIs, real-time services and end-to-end system design.
- Software Architecture
- Distributed Systems
- Backend Engineering
MMORPG & Real-Time Systems
Production game servers, clients, persistence, gameplay services, protocols and live operations.
- C++ / C / Lua
- C# / Unity
- Real-Time Networking
Cybersecurity & Anti-Cheat
Client integrity, application security, network protection, anti-abuse and custom Layer-7 defenses.
- Application Security
- Network Security
- Windows Internals
Data & Performance
Database architecture, SQL engineering, performance optimization, analytics and high-volume operational data.
- Microsoft SQL Server
- T-SQL
- Data Architecture
Infrastructure & Operations
Windows/Linux fleets, virtualization, hosting, networking, e-mail infrastructure, deployment and production continuity.
- Windows & Linux
- Virtualization
- Production Operations
Enterprise & Automation
ERP, MRP, CRM, B2B, e-commerce, workforce systems, integrations and internal business automation.
- .NET / VB.NET
- PHP / Web
- Systems Integration
Cross-Platform Engineering
Windows, Android and iOS client systems with native integrations, compatibility layers and shader pipelines.
- Unity / C#
- C / C++
- HLSL / GLSL / ShaderLab
Engineering Leadership
Technical recruitment, onboarding, mentoring, training and building engineering capability from the ground up.
- Technical Leadership
- Mentoring
- Team Development
Selected work
Systems with real users, real infrastructure and real consequences.
The projects below represent the breadth of my engineering ownership rather than a list of every application I have built.
01Flagship · Production
KnightOnline1 (KO1)
Production MMORPG Ecosystem
Founded in 2011 and built end-to-end: game server, Windows/mobile clients, real-time networking, MSSQL, web platform, launcher/updater, anti-cheat, security, administration tooling and production infrastructure.
100K+ accounts17M+ recorded PvP eventsLong-running production
Visit KnightOnline1
02Since 2007
PvPKnight
Anti-Cheat, Security & MMORPG Infrastructure
My first commercial software and online infrastructure venture, spanning game technologies, anti-cheat, client/server security, managed infrastructure, virtualization, networking and production operations.
Visit PvPKnight03Cross-platform
Modern MMORPG Client
Windows · Android · iOS
A modern client architecture combining Unity/C#, native C/C++ integrations, shaders, networking and compatibility layers for an existing production MMORPG server ecosystem.
04Security
Layer-7 Firewall
Application & Network Security
Custom traffic analysis, filtering, abuse mitigation and application-layer protection tooling built for internet-facing production game infrastructure.
05Internal platform
LetsWork
Workforce Operations & Productivity Analytics
An internal GameSuDo platform for workforce operations, productivity analytics, employee management and management visibility across distributed work.
06C++ / C / Lua
MMORPG Game Server Architecture
Real-Time Backend Systems
Production game-server development and modernization covering gameplay, networking, sessions, persistence, events, automation, database integration and operational tools.
07Enterprise
ERP & MRP Systems
Manufacturing & Business Operations
Commercial ERP/MRP, warehouse, distribution, reporting and analytics solutions built primarily with .NET, MSSQL and deep business-system integrations.
08Integration
Business Automation Portfolio
B2B · CRM · E-Commerce · Field Sales
Production business systems integrating desktop, web, mobile and database environments across multiple industries and ERP/accounting platforms.
Leadership
I help engineers improve their skills and build better software.
GameSuDo today operates as a 16-person ecosystem of full-time and part-time contributors. I lead technical recruitment, onboarding, training and mentorship alongside architecture and engineering.
Hands-onI remain directly involved in the hardest technical decisions and implementations.
TeacherEvery engineer in my team has been trained and mentored inside the technical system I established.
Company OwnerI treat software, security, infrastructure, operations and team capability as one connected engineering problem.
Career
My career has grown through building and delivering software.
Started programming
Began a long-term path into software, systems and infrastructure.
Doğan Bilgisayar Sistemleri
Founded my first IT business, combining systems, networking, technical services and software.
Founded PvPKnight
First commercial software and online infrastructure venture; also worked with hosting, virtualization and managed servers.
Enterprise software engineering
Built commercial ERP, MRP, CRM, B2B, e-commerce, field sales and database-heavy systems while continuing my own ventures.
Founded KnightOnline1
Started building the MMORPG ecosystem that would become my flagship long-running production platform.
Full-time MMORPG focus
KO1 and MMORPG engineering became my primary professional focus.
Founder & CTO, GameSuDo
Leading a 16-person engineering ecosystem while remaining hands-on across architecture, security, infrastructure and development.
Credentials
Formal education, backed by decades of production engineering.
B.Sc. Computer Science
University of the People
Undergraduate Certificate in Data Science
University of the People
EF SET English Certificate — B2 Upper-Intermediate
EF SET · 59/100
Contact Me
Building something technically difficult?
If the problem spans architecture, security, infrastructure, real-time systems or engineering leadership, I am interested in conversations where depth matters.
