Architecture & Cloud
AWS (API GW, Lambda, DynamoDB, S3, CloudFront), IAM, VPC, caching, queues, events.
Backend
Node.js, TypeScript, Python; REST/GraphQL; testing, validation, performance.
Dev Experience
IaC (SAM), CI/CD (GitHub Actions), LocalStack, feature flags, templates.
Frontend
React, Astro, Tailwind; design systems; admin portals & dashboards.
IoT & Integrations
MQTT, Home Assistant, embedded controllers, telemetry, automations.
Observability
CloudWatch, structured logging, tracing, health checks & SLOs.