Summary
Overview
Work History
Education
Skills
Affiliations
Timeline
Generic

BRETT DEMETRIS

IT Systems Engineer
Pacifica

Summary

Experienced Systems Engineer with a background in managing and securing large heterogeneous client endpoint environments looking to collaborate with a skilled team. Strong understanding of AWS, and GCP platforms and how they relate to hybrid on-premise resources. Skilled in identity and access management. Ability to work in teams or independently. Able to deliver projects in a fast paced workplace, and operationalize/automate tasks in order to scale and keep pace with growing demands.

Overview

17
17
years of professional experience
4
4
years of post-secondary education

Work History

Senior Client Platform Engineer

Roblox
01.2025 - Current
  • Implement security controls and support processes for BPO ChromeOS Deployment. Facilitate partner onboarding, requirements gathering, transition planning, and transition execution.
  • Develop system designs for macOS and Windows endpoint management. Identifying critical gaps in tooling, and socializing project roadmaps to address these gaps.
  • Partner with stakeholders in security, trust and safety, and enterprise applications to identify cross-functional needs, and translate those needs into actionable deliverables.
  • Championed best practices in existing endpoint systems. Refactoring device management scripts, policies, and profiles. Removing duplication in these areas, and increasing reliability of device configuration.

Staff SaaS Operations Engineer

Flexport
06.2023 - Current
  • Design and implement employee lifecycle processes and automation leveraging Okta as the primary identity provider. Used Okta Workflows, SCIM integrations, and RBAC where applicable.
  • Own and operate IT productivity tooling such as Jira, Confluence, Slack, and Google Workspace.
  • Design and assist in the renovation of client platform engineering practices specific to macOS. Improve device deployment, user identification, and contextual awareness.
  • Administrate Azure ecosystem consisting of Entra ID, InTune, O365, and Teams. Setup identity federation and licensing lifecycle automation.
  • Function as the primary escalation point for all IT related issues.


Staff Site Reliability Engineer

Coinbase
01.2020 - 06.2023
  • Develop and drive client engineering roadmap based on requirements from the business with a strong emphasis on security
  • Act as a cross functional leader, and collaborate with other technical leads to scope and prioritize work both internally and externally to IT
  • Service owner for macOS/Windows/ChromeOS fleet using JAMF, inTune, and Google Workspaces respectively
  • Implemented open source tooling to support 3rd party patching (Munki) and device configuration (Puppet) with consensus controls living in Github for macOS systems
  • Build, maintain, and administer endpoint security services such as Crowdstrike, OSQuery, Code42, and Duo
  • Ensure agents area healthy, data pipelines are operating, and alerting mechanisms are functional for consuming teams
  • Develop and deploy IT infrastructure using Bazel/AWS/Terraform pipeline
  • Contribute to product infrastructure codebase using mainly Ruby and Golang to ensure IT has a strong presence, and is well regarded in the infrastructure ecosystem
  • Build tools for IT to automate worker lifecycle for both onboarding and off-boarding using mainly AWS lambda and Okta workflows.

Systems Engineer

Airbnb
01.2015 - 01.2020
  • For macOS/Windows/ChromeOS/Android/iOS endpoint fleet using primarily open source tools
  • All code and configuration for the endpoint fleet lives in Git and is fully transparent to the company
  • Endpoint design is centered around meeting software patching SLAs, and security requirements
  • Deploy AWS Infrastructure with Terraform, Chef, Jenkins
  • Setup CI/linting to enforce code standards
  • Participate in planning and development of the AWS server infrastructure in general
  • Deploy on premise in VMWare if required
  • Lead Engineer on deploying Google Cloud Platform at Airbnb
  • Using GCP to leverage Identity Aware Proxy, Endpoint
  • Verification, and Access Context Manager to remove the need for VPN on internal applications
  • Final Escalation point for all support related issues
  • Work closely with support leadership to create processes and workflows for the team to consume, and build tooling to improve efficiency.

Application Administrator

Palo Alto Unified School District
01.2013 - 01.2015
  • Manage macOS/iOS fleet of 12,000 devices using JAMF
  • Create policies, profiles, packages, scripts, and other resources relating to endpoint management
  • Built out Apple ordering and provisioning workflow revolved around Apple Business Manager (previously deploy.apple.com), DEP, and VPP
  • Manage Active Directory and Open Directory servers
  • Create and manage Organizational Units, and Group Policies for managing different client needs and security levels
  • Utilize Active Directory Tools for PC clients, and Workgroup Manager for macOS clients.

Support Technician

01.2008 - 01.2013
  • Provide technical support to campus staff and students for all issues relating to macOS and Windows
  • Leverage JAMF to manage a large fleet of macOS and iOS devices
  • Create policies, packages, and scripts
  • Projects
  • Gosal
  • A Cross Platform tool that attempts to API system information (windows/macOS)
  • MicroMDM
  • An open source MDM server for managing macOS and iOS devices
  • CryptBDE
  • A Windows Bitlocker client intended to manage full disk encryption on windows devices
  • Contact bdemetris@gmail.com 6505767979 bdemetris/ bdemetris

Education

BS - Finance

San Jose State University
09.2002 - 01.2007

Skills

MacOS

JAMF

Puppet

Windows

AWS

GCP

Terraform

Chef

Jenkins

Linux

MySQL/Postgres

SAML

Google Beyond Corp

LDAP

Okta

Python

Ruby

Golang

Affiliations

Pacifica, CA

Timeline

Senior Client Platform Engineer

Roblox
01.2025 - Current

Staff SaaS Operations Engineer

Flexport
06.2023 - Current

Staff Site Reliability Engineer

Coinbase
01.2020 - 06.2023

Systems Engineer

Airbnb
01.2015 - 01.2020

Application Administrator

Palo Alto Unified School District
01.2013 - 01.2015

Support Technician

01.2008 - 01.2013

BS - Finance

San Jose State University
09.2002 - 01.2007

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BRETT DEMETRISIT Systems Engineer