Engineering hub

I build backend systems, developer tooling, and production software.

I'm Juan Castro, a backend engineer focused on Linux infrastructure, APIs, databases, and practical software that solves real problems.

system_status.sh

Uptime:99.998%

Cluster State:Healthy

> run connectivity_check.py

Checking redis_cluster_01... [OK]

Syncing postgres-primary... [OK]

Load balancer re-route... [DONE]

API servicesonline

Linux systemsactive

Databasestuned

Developer toolsshipping

Current focusCollectiv v2

Core competencies

Engineering Focus

Designing service boundaries, background workflows, and pragmatic interfaces for real production systems.

Working close to the operating environment with an eye on deployment, observability, and operational clarity.

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Building around relational data, query discipline, and storage choices that support maintainable software.

Shipping utilities and internal building blocks that reduce friction for engineers and operators.

Technical portfolio

Production

Collaborative music platform supporting sessions, contributions, notifications, profiles, royalty workflows, and mixer experiences.

Next.jsTypeScriptPrismaPostgresNextAuthCloudflare R2Vercel

Active

Local-first security detection platform processing Windows Event Logs through a streaming pipeline into ClickHouse-powered detections.

GoPowerShellVectorNATSClickHouseDocker

Current focus / now

Selected tooling

TypeScriptNode.jsPythonGoPostgresMySQLSQLiteClickHouseDockerNATSPrismaNext.js

"Infrastructure is where software meets reality. The goal is to keep that boundary understandable."