EXPLORE

Computer Security Cryptography Network Administration Web Security Wireless
Profile cover photo
User Avatar

Sajith S.

@jeewanthasas

5.0
1

2.0

2.0

100%

Information Systems Security Professional

$90 USD / Hour

Flag of

Sri Lanka (2:50 PM)

Joined on May 11, 2012

$90 USD / Hour

I was enlightened with the message of offering this opportunity, which has an enviable reputation for carrying out excellent work. As a person who is very much interested in Information Systems Security, IT Security Audit & Assurance fields, I had no hesitations to apply for this, knowing the immense importance that will attach to my career. I would like to introduce myself as a professional, associated with the advanced yet evolving field of Information Systems Security, highlighting my relevant academic and professional qualifications. My academic qualifications include both a First class BSc (Hons) in Information Technology (specializing in Computer Systems and Networking) as well as, a Distinction Level achievement at MSc specializing in Information Systems Security.

5.0 · 1 Review
1 Review
M

Former Client (inactive)

5.0

£38 GBP

8 years ago

case study in information security

He is so professional and smart guy. Submit on time and the work was perfect. Although I asked for his help before 2 days from the submission, the solution was perfect and he was so helpful.

Share

Experience

Information Security Specialist

Apr, 2021 - Present

5 years

VG Estonia OÜ

Apr, 2021 - Present

5 years

Implementing information security and compliance frameworks such as ISO 27001/27002, GDPR, NIST, SOX 404, PCI DSS etc. Carrying out risk assessments and treatment with controls selection/ implementation in an ISO27001 environment Designing and implementing security in systems, networks and software development environments Resolving systems and network security related problems Implementing and tuning SIEMs, IPS/IDS, WAF, Firewalls and other security products

Apr, 2021 - Present

5 years

Senior Consultant - Information Security

Feb, 2017 - Apr, 2021

4 years, 2 months

Visolit.no (Visolit Pvt. Ltd.)

Feb, 2017 - Apr, 2021

4 years, 2 months

Main duties will include monitor of computer networks for security threats or unauthorized use, repair or strengthen systems against breaches, Firewall and Security device configuration and management.

Feb, 2017 - Apr, 2021

4 years, 2 months

Security Engineer (Security Operations Centre)

Jul, 2015 - Feb, 2017

1 year, 7 months

TETRAN Pty Limited

Jul, 2015 - Feb, 2017

1 year, 7 months

Responsibilities include at TETRANSOC but not limited to, - Threat Monitoring & Mitigation - Vulnerability Assessment and Penetration Testing - Web Application Security Assessment - Malware Analysis - Network Perimeter Security - Social Engineering Assessment - Wireless Security Assessment - Physical Security Assessment - IT Policy & Procedure review - ISO 27001:2013 ISMS Implementation & Consultancy Service

Jul, 2015 - Feb, 2017

1 year, 7 months

Education

Sheffield Hallam University

2010 - 2011

1 year

MSc in Information Systems Security

Flag of

United Kingdom

2010 - 2011

1 year

Sheffield Hallam University

2006 - 2009

3 years

BSc (Hons) in Information Technology (Computer Systems & Networking)

Flag of

United Kingdom

2006 - 2009

3 years

Qualifications

ISO 27001 Lead Auditor - (BS7799 Lead Auditor) Training

2010

British Standards Institute (BSI)

Received Information Security Audit (BS7799 Lead Auditor) Training from British Standards Institute (BSI) and completed and passed the ISO 27001 Lead Auditor training course successfully.

2010

Verifications

On time

100%

On budget

100%

Accept rate

100%

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)