I'm a Computer Engineer based in Istanbul, working as a Backend & Systems Engineer at UESTCO Enerji Sistemleri. I design and ship .NET 8 systems end-to-end — architecture, performance, security and operations.
- Currently building a DDD-based microservice ERP backend (Identity + CRM bounded contexts, JWT + Redis permission cache, YARP API Gateway)
- Also shipping Nexa-Flow — a plug-in protocol industrial IoT acquisition service unifying Modbus TCP/RTU, MQTT, TCP Listener and Virtual devices on a single read pipeline
- Recent focus areas: hot-path performance refactors (ConcurrentDictionary, dirty-set,
System.Threading.Channels,SemaphoreSlimbudgets), hash-tracked SQL migration, AES-256-GCM credential encryption, liveness/readiness split health probes - Ask me about
.NETbackend architecture, industrial protocols (Modbus / MQTT), SCADA, performance engineering, Linux ops
Backend & Languages
Databases & Cache
Architecture & Real-Time
DevOps & Ops
Frontend & Mobile
Most production work happens in private organization repos. Below are the public-facing pieces and case studies.
- furkanaygul.com.tr — Personal portfolio (PHP + JSON-driven sections), with deep technical write-ups of each project
- Nexa-Flow case study — Plug-in protocol architecture, performance refactor and hash-tracked SQL migrator
- UESTCO ERP case study — DDD microservices, Identity + CRM bounded contexts, YARP gateway
- Portfolio · furkanaygul.com.tr
- LinkedIn · linkedin.com/in/aygulfurkan
- Email · contact@furkanaygul.com.tr
Open to backend / platform / industrial-IoT roles and consulting work.