About Me

Stephen Lyons

Cybersecurity Engineer building secure, resilient systems at enterprise scale.

Summary

Professional Background

I'm a Cybersecurity Engineer at Yamaha Motor Corporation with a strong foundation in both offensive and defensive security practices. My work spans DevSecOps, cloud infrastructure security, SIEM engineering, endpoint protection, and incident response.

I build and maintain CI/CD pipelines with security checks baked into every workflow, manage enterprise security tools including CrowdStrike, Netskope, and Zscaler, and develop infrastructure as code using infrastructure as Code. My approach emphasizes automation, continuous monitoring, and proactive threat detection.

Before focusing on security, I honed my skills as a full-stack web developer, which gives me a deep understanding of the systems I protect. I hold a B.S. in Computer Science from Cal State Long Beach with a minor in Cyber Security Applications.

Technical Skills

Skill Graph

Languages

  • TypeScript
  • Python
  • HTML
  • JavaScript
  • Rust
  • Go
  • CSS
  • C
  • PHP
  • Java
  • C++
  • C#

Frameworks & Tools

  • Git
  • React.js
  • Linux/UNIX
  • Node.js
  • Docker
  • Next.js
  • Astro.js
  • React Native
  • GitHub CLI
  • Jest
  • Expo

Security Tools

  • CrowdStrike
  • Splunk
  • Netskope
  • Intune
  • Entra IAM
  • Zscaler
  • Microsoft Sentinel
  • Azure AD
  • GitHub Enterprise
  • GitHub Actions
  • Terraform
  • Ansible

Security Skills

  • SIEM
  • Incident Response
  • DevSecOps
  • Endpoint Detection & Response
  • Data Loss Prevention
  • Cloud Security
  • Mobile Security
  • Wiz
  • Malware Analysis
  • Vulnerability Mgmt
  • AD Security
  • App Security
  • Digital Forensics

Cloud

  • AWS
  • Azure
  • Firebase
  • DataDog
  • Google Cloud
  • Vercel

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Experience

Work History

Aug 2023 – Present

Cybersecurity Engineer

Yamaha Motor Corporation — Cypress, CA

GitHub Enterpriseinfrastructure as CodeNetskopeCrowdStrikeZscalerAzureIntunePythonAWS
  • Manages on-prem and cloud security operations
  • Implements and manages DevSecOps practices using GitHub Actions and GitHub Enterprise
  • Develops infrastructure as code using infrastructure as Code
  • Oversees enterprise cybersecurity tool management including Netskope, CrowdStrike, and Zscaler
  • Manages Azure infrastructure, groups, and mobile devices through Intune
  • Builds and maintains CI/CD pipelines with embedded security checks and compliance gates
  • Develops and maintains SIEM platforms for real-time visibility, detection, and incident response
  • Automates log collection, normalization, and enrichment across cloud, endpoint, and SaaS sources
  • Deploys and manages EDR solutions and implements DLP controls
  • Assists in leading security operations including triage, investigation, containment, and remediation
May 2022 – Aug 2022

Business Application Development Intern

Yamaha Motor Corporation — Cypress, CA

ABAPSAPPythonReact.js
  • Designed and presented testing methods to ensure quality of newly developed code and data
  • Developed custom SAP programs using the ABAP programming language
  • Utilized ABAP, SAP, Python, and React.js to support development of advanced business applications
  • Provided support in transitioning web technologies and frameworks
Feb 2020 – May 2022 & Oct 2022 – Jul 2023

Web Developer

Associated Students Inc. — Long Beach, CA

HTMLCSSPHPJoomlaReact.jsGoogle AnalyticsWordPress
  • Led a team of graduate student developers and conducted interviews to hire new web developers
  • Improved ASI websites with SEO, website merging, and daily content updates for campus events
  • Developed and deployed a quiz game for incoming freshmen during the COVID-19 Pandemic using React.js
  • Assisted with the development and deployment of web-related applications for the Student Union and Student Recreation Center
May 2021 – Jan 2022

Lead Security Engineer

Down (joindown.com) — Remote

TypeScriptReact NativeExpoJest/DetoxGitHubFirebase
  • Coordinated development and testing of Android and iOS components for React Native social media app
  • Developed security rules and tested the React Native application using Jest and Detox libraries
  • Led the development of security and testing with Firebase storage
Jun 2021 – Aug 2021

Software Development Lead

Down Friend Groups — Remote

React NativeJavaScript
  • Led software development efforts for the Down Friend Groups team
Jul 2018 – Jun 2019

Intern / Laser Technician

M.R. Mold and Engineering — Brea, CA

Solidworks3D ModelingQC Software
  • Founded internship program and acted as liaison to Brea Olinda High School for future interns
  • Learned cutting-edge plastic and silicone molding methods and 3D modeling with Solidworks
  • Produced laser-engraved steel products and developed software to quality-control precision silicone parts
Education

Academic Background

B.S. Computer Science

California State University, Long Beach

Aug 2019 – May 2023
Minor in Cyber Security Applications

Relevant Courses: Algorithms, Data Structures, Computer Security I & II, Networks and Network Security, Machine Learning, Cybersecurity in Business, Artificial Intelligence, Digital Forensics, Object-Oriented Programming, Software Engineering, Databases

Activities: CSULB ACM (Webmaster — acm.csulb.org), CSULB Cybersecurity Club, CSULB Jiu Jitsu Club, CSULB Snow and Ski Club, BeachHacks 2023