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Grishon Muthee

@grishonmuthee

Linux-focused cybersecurity specialist delivering faster incident response and web security remediation.

What I'm looking for

I’m looking for a Linux-focused security role where I can own incident response and SIEM monitoring, run penetration testing and hardening, and build automated detections that improve reliability and threat detection in real production environments.

I’m a Linux-focused Cybersecurity Specialist with 4+ years of experience in security operations, penetration testing, system hardening, and incident response across Linux and Windows environments.

I build practical defenses that move the needle: I’ve monitored Linux and Windows systems with SIEM (Splunk) to achieve 35% faster triage, configured firewalls and IDS/IPS across hybrid environments to improve attack detection coverage by 40%, and remediated 120+ critical and high severity web application vulnerabilities.

I take a hands-on approach to investigations and resilience—conducting malware analysis and threat investigations to reduce incident recurrence by 30%, and automating security monitoring and log analysis with Python and Bash to cut manual workload by 25%.

I also enjoy learning by doing, from building security labs and WAF simulation environments to completing platforms like TryHackMe, Hack The Box, Root-Me, and PicoCTF. I’m passionate about Linux systems engineering, anti-abuse systems, and building secure, scalable hosting environments.

Experience

Work history, roles, and key accomplishments

LT

Cybersecurity Specialist

Levian Technologies

May 2021 - Mar 2026 (4 years 10 months)

Monitored Linux/Windows environments with Splunk SIEM to detect and respond to incidents, improving triage speed by 35% over time. Conducted 120+ critical/high web application vulnerability assessments and hardened hybrid networks with firewalls and IDS/IPS, raising attack detection coverage by 40%.

Splunk Incident Response Penetration Testing Vulnerability Assessment System Hardening IDS Malware Analysis

PS

Cybersecurity Analyst

PhantomNet Security

Dec 2019 - Feb 2021 (1 year 2 months)

Supported SOC operations by triaging security alerts and reducing average incident response time by 20%. Conducted vulnerability assessments and penetration tests for client web applications and infrastructure, improving compliance adherence by 15% and increasing phishing detection by 22% through security awareness training.

Alert Analysis Triage Vulnerability Assessment Penetration Testing & Compliance Security Awareness Training

TI

Junior Cybersecurity Specialist

TechSecure Innovations

Jan 2019 - Dec 2019 (11 months)

Assisted enterprise Linux hardening and firewall configuration and supported deployment/maintenance of IDS, antivirus, and endpoint security tools. Participated in incident response and post-incident reporting, contributing to vulnerability remediation efforts that improved system stability by 18%.

IDS Endpoint Security Incident Response

Education

Degrees, certifications, and relevant coursework

KU

Kenyatta University

Bachelor of Science, Aerospace Engineering

Earned a BSc in Aerospace Engineering from Kenyatta University.

Tech stack

Software and tools used professionally

Splunk

GitHub

MySQL

SQLite

Gmail

PowerShell

Ubuntu

Debian

Linux

Windows

Bash

Jan

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