EXPLORE

HTML Linux PHP System Admin Web Security
Profile cover photo
User Avatar

Jonathan L.

@redonkuless

5.0
5

3.3

3.3

100%

System Network Engineer

$85 USD / Hour

Flag of

United States (7:18 PM)

Joined on April 1, 2010

$85 USD / Hour

Hello! With 25+ years in cybersecurity, I'm your go-to for analysis, penetration testing, and fortified security. As a Freelancer.com contributor, I bring vast experience to your projects, safeguarding them from evolving cyber threats. Cybersecurity Excellence: My 25+ years span vulnerability assessments, network security, shielding data. I commit to data confidentiality, integrity, availability—core values in my journey. Penetration Testing Expertise: As a Boeing Cyber Security Engineer, I simulate real-world attacks, assess system resilience via penetration testing, providing actionable insights for a breach-resistant digital infrastructure. Holistic Security: I excel in comprehensive security. I've managed Risk Management Frameworks, validated solutions, collaborated with admin teams for ISO 27001 compliance. I grasp security controls, NIST 800-53, DFARS, fortifying your security. Cutting-edge Techniques: Innovative cybersecurity excites me. Cloud security, threat modeling, network diagramming—my strengths. Developing attack scenarios fortifies systems against emerging risks. Responsive Collaboration: Freelancer.com-ready, I'm approachable, responsive. By grasping your project, I tailor expertise to your needs. Championing Security Excellence: My 25+ years showcase my commitment to digital safety. Vulnerability assessments, strong security, or thorough penetration testing—trust my expertise. Security is vital. I bring 25+ years of cybersecurity and penetration testing experience to guide your projects. Fortify your digital assets with my expertise. Excited to join Freelancer.com, fortifying your projects with unmatched expertise.

Verifications

On time

100%

On budget

100%

Accept rate

75%

Repeat hire rate

25%

Portfolio

Portfolio

41914
41914
5.0 · 5 Reviews
5 Reviews
M

Former Client (inactive)

5.0

$30 USD

14 years ago

BackTrack Linux

Overall Experience: Positive

Share

P
Flag of

Bob M.

5.0

$150 USD

16 years ago

CPanel/WHM Server Admin Required, PHP A Bonus

Great work by redonkuless, excellent comms, we chatted via messaging, on the phone and by email - whatever I preferred. Work done in a timely and professional manner and will be working with him ongoing now!

Share

J
Flag of

Joel A.

5.0

$140 USD

16 years ago

Server migration from VDS to Dedicated Server

Truly excellent provider. 10+ in every sense. Highly recommended.

Share

J
Flag of

Joel A.

5.0

$100 USD

16 years ago

Script to backup web server to S3, Google App, etc.

Fantastic work. Completed task with creativity and initiative. Excellent customer support and service.

Share

A
Flag of

akarmach

5.0

$30 USD

16 years ago

Need email expert to test Postfix vs Exim for mass email svr

Did a great job. Very knowledgeable, responds immediately, and went above and beyond the project requirements. I will definitely be using him again!

Share

Certifications

G

General Orientation Exam

Unix - Level 1

Unix

US English - Level 1

US English

Registered Users

Total Jobs Posted

Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)

Copyright © 2026 Freelancer Technology Pty Limited (ACN 142 189 759)