Top OS Security freelancers

16 freelancers list OS Security on Upwork.

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Showing 16 of 16Data updated Nov 7

# Freelancer		SinceMember since
muhammad k. 🇵🇰🇵🇰 SOC 2 & ISO 27001 Audit Readiness Expert \| Vanta & Drata	$7k↑ 3%	Dec 2010Dec 21, 2010
Matt H. 🇺🇸🇺🇸 Network & System Admin, Active Directory, Entra, Servers & Firewalls	$2k↓ 11%	Oct 2025Oct 16, 2025
Muneeb I. 🇵🇰🇵🇰 Windows Kernel & Driver Developer \| Embedded & Firmware \| C/C++/C#	$1k↓ 9%	Aug 2025Aug 17, 2025
4 Abdulrahman A. 🇸🇦🇸🇦 Google Cloud Engineer \| Cloud & Network Infrastructure Specialist	$756↑ 6%	Apr 2024Apr 14, 2024
5 Thomas B. 🇮🇪 NewNew🇮🇪 Network & System Administration \| Network Administration	$548↓ 29%	Apr 2026Apr 10, 2026
6 Sanawer S. 🇵🇰🇵🇰 Senior PKI & eSignature Engineer \| Java Spring Boot \| HSM, CA/RA & AWS	$182↑ 12%	Nov 2018Nov 10, 2018
7 Ikemefula A. 🇳🇬🇳🇬 Blockchain/Crypto Content Writer \| Google IT Support.	$0–	Jan 2018Jan 12, 2018
8 Ivaylo V. 🇧🇬🇧🇬 Battle-tested Linux sysadmin & DevOps: cloud Ansible CICD VPS hosting	$0–	Nov 2023Nov 2, 2023
9 Siddha B. 🇵🇭🇵🇭 Technical Support/Customer Service Representative/System Engineer	$0↓ 100%	Nov 2010Nov 12, 2010
10 Dennis U. 🇬🇧🇬🇧 Web, AI, Programming & Cybersecurity Expert	$0–	Jun 2024Jun 20, 2024

Freelancer	MRR	Member since
11 Kaleem U. 🇵🇰🇵🇰 Sr. Security Engineer	$0–	Aug 2021Aug 24, 2021
12 Md Sefat A. 🇧🇩🇧🇩 Penetration Testers	$0–	Jun 2021Jun 10, 2021
13 Haris A. 🇵🇰🇵🇰 Embedded Android & AOSP Engineer \| Custom Firmware, Kiosk Systems, MDM	$0–	Jun 2019Jun 9, 2019
14 Vivek K. 🇮🇳Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.🇮🇳 AI Engineer, JAMF Expert, Cybersecurity Expert, Sharepoint Migrations	≈$0–	May 2016May 18, 2016
15 Vyacheslav C. 🇺🇦Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.🇺🇦 Linux System Administrator	≈$0–	May 2015May 6, 2015
16 Justin S. 🇺🇸Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.🇺🇸 Senior Penetration Tester	≈$0–	Mar 2024Mar 14, 2024

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