01
Languages & Frameworks
KotlinSwiftCJavaScalaPythonJavaScriptSQLReactReact Native
02
Payments & POS
Visa L3Mastercard L3Amex L3Fime / UL Test RemediationPOS IntegrationsCard Machines
03
Embedded & Mobile
ARM FirmwareSDK ArchitectureBluetoothAndroidiOSMQTT
04
Tooling & Practice
Technical LeadershipMentoring & CoachingCross-Org CoordinationArchitecture & DesignAI ToolingMCP