Work and expertise
I specialize in complex software where APIs, devices, offline behavior, cloud infrastructure, payment systems, and real operational users all meet.
OBU + TCP/IP + video
Built a bus tracking system using onboard units over TCP/IP for live tracking. The system focused on vehicle location visibility, route movement, operations monitoring, and video visualization so stakeholders could understand fleet activity in real time.
Kiosk + hardware devices
Created an ATM kiosk system for a company with Genmega bill acceptor, cash dispenser, receipt printer, camera recording, card readers, and device-driven transaction workflows. This required hardware integration discipline, error handling, state recovery, and operator-friendly screens.
RFID + offline-first
Worked on RFID-based inventory management with offline support, crash support, local resilience, synchronization, and desktop-friendly operational flows. This kind of system needs reliability first because users depend on it even when networks or machines fail.
Specialized delivery
Integrated payment flows into multiple web apps with careful transaction handling and user-facing reliability.
Developed a MediaWiki solution for a medical-based company in the US.
Specialist in workflow-heavy CRM and ERP software where permissions, reporting, and business rules matter.
Expert in Windows desktop applications with WPF and WinForms, especially hardware-integrated workflows.
Built and explored MAUI and React Native apps for mobile and cross-platform delivery.
Performance-focused debugging, query improvement, backend tuning, and production stabilization.
Architecture
Advanced expertise in microservices, .NET designs, dependency injection, RabbitMQ, SignalR, BullMQ, automation, Python utilities, API boundaries, and long-term maintainability.
DevOps
Hands-on with AWS SES, ECS, ECR, ALB, EC2, S3, Route 53, VPC, bastion hosts, RDS migrations, GitHub Actions, Jenkins, Azure App Services, MinIO, VPS, Linux, and Microsoft 365 management.