Linux & Automation
Linux server administration, Ansible playbooks and automation, service troubleshooting, permissions, logs, resource monitoring, NGINX reverse proxy, Docker operations, and Bash scripting for repeatable infrastructure management.
Database Engineering
Relational schema design, practical SQL queries, joins, indexes, migrations, query analysis and optimization, PostgreSQL administration basics, Redis caching, and safe data access under concurrent workloads.
Delivery & Observability
Containerized environments, Kubernetes, Docker Compose, CI/CD pipelines, blue-green releases, Grafana dashboards, Loki log aggregation, Alloy telemetry collection, structured JSON logs, retention policies, and alert-driven incident response.
Architecture & Security
System design, distributed synchronization, modular monoliths, Hexagonal and Clean Architecture, API authorization, rate limiting, validation, encryption, race-condition prevention, refactoring, testing, and performance profiling.