Ernesto Espinosa
@ernestoespinosa
I build and secure mission-critical Linux, Kubernetes, and automation platforms for high-availability operations.
United StatesWhat I'm looking for
At By Light, I operate secure Linux, VMware, PostgreSQL, and Kubernetes infrastructure for U.S. Space Force launch range applications, where availability and integrity affect launch go/no-go decisions. I built an Ansible/AAP certificate lifecycle pipeline that replaced manually managed certificates with self-renewing credentials and reduced recurring outage risk.
Previously at AT&T and UC Santa Barbara, I supported high-scale telemetry, analytics, and research platforms—from 15M+ cellular devices and 8–10 TB of daily data to a JupyterHub environment scaled from 70 to 3,400+ users. I bring 10+ years of Linux operations, Python and Bash automation, infrastructure-as-code, incident response, storage, and enterprise virtualization experience to reliable, auditable deployments.
Experience
Work history, roles, and key accomplishments
DevOps Engineer
By Light Professional IT Services
Dec 2023 - Present (2 years 8 months)
Engineer and operate secure infrastructure for mission-critical U.S. Space Force launch range applications. Administer, patch, and harden RHEL 8/9 systems on VMware, and manage Kubernetes environments on VMware Tanzu.
Education
Degrees, certifications, and relevant coursework
Mount San Antonio College
Commercial Pilot's License, Aviation
Completed Commercial Pilot's License coursework at Mount San Antonio College.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Portfolio
github.com/ernieeJob categories
Skills
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