Infrastructure and Operations
For deployment, container orchestration, Linux administration, and production operations.
Kubernetes
Docker
Podman
RHELUbuntu ServerBashGitHub Actions
Nginx
Prometheus
GrafanaNagiosBlackbox ExporterTooling
Tooling used across platform operations, backend delivery, observability, and deployment workflows.
KubernetesDockerPodmanRHELUbuntu ServerBashGitHub ActionsNginxPrometheusGrafanaNagiosBlackbox ExporterBackend and APIs
For business logic, APIs, and system integration workloads.
Java
Spring Boot
Python
Erlang
PostgreSQLMariaDB
MongoDB
RedisClickHouseTelecom and Production Support
For SMS Firewall implementation, incident response, and carrier-grade messaging platforms.
SMS FirewallSS7MAPM3UASCTPSIGTRANL2 SupportRoot Cause Analysis
Frontend and Product Surfaces
For dashboards, portals, and user-facing interfaces around platform systems.
React
Next.js
JavaScript
HTML
CSSWorkflow Principles
- >Prefer clear, low-complexity architecture that is easy to operate.
- >Ship in small, testable increments with rollback paths.
- >Treat observability as a first-class part of the delivery lifecycle.
- >Document configuration and operational runbooks for handovers.
Active Platform Build
Public backend platform: microservicefrontend.rumalg.me
- >Spring Boot microservice platform with API Gateway + Eureka + Redis and Auth0 identity flow.
- >Gateway-centered trust model: validate JWT at the edge, sanitize internal headers, and relay only trusted identity context.
- >Service-to-service reliability via retry/circuit-breaker policies and environment-driven rate-limit controls.
Monitoring in Production
Operational visibility for deployed services, including runtime metrics, health checks, failure signals, and alertable service indicators.
Performance
- >Average response time
- >P95 latency
- >Requests per minute
- >Rate-limit hits
Reliability
- >Failed request percentage
- >Redis fallback usage
- >Retry count
- >Error categories
Infrastructure
- >CPU usage
- >Memory usage
- >Container uptime
- >Deploy count
