Summary
Overview
Work History
Education
Skills
Certification
Timeline
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Kennedy Osei Asibey

CyberSecurity
Nottingham

Summary

Cyber and Network Security Analyst with 7+ years of experience designing and implementing secure IP and SCADA networks in enterprise wide systems. Directed security and data center operations across five subsidiaries in oil & gas marketing, terminal, and distribution sectors, ensuring 98.9% system uptime and contributing to 4+ years of stable business growth. Communicated effectively with stakeholders and led security projects involving multiple teams.


Overview

7
7
years of professional experience
1
1
Certification

Work History

Cybersecurity, GRC Analyst

Freelance and Remote
12.2023 - Current
  • Managed incident response and investigations, driving policy improvements from root cause analysis.
  • Developed and enforced information security policies and controls to mitigate risk and ensure compliance.
  • Collaborated on audits and risk reviews, translating technical issues into clear compliance actions.
  • Maintained risk registers and supported ongoing risk assessments across the enterprise.

Senior Network Security Engineer

The Quantum Group
01.2020 - 09.2022
  • Led a cross-functional team of five to kick start the company’s first internal cloud infrastructure, accelerating project delivery timelines by 30% and strengthening collaboration across departments.
  • Rolled out and supervised vulnerability assessment tools such as OpenVAS and Tenable Nessus, significantly reducing mean-time-to-detect (MTTD) and remediating 95% of critical findings across IT systems.
  • Reduced high-severity vulnerabilities by 40% over 12 months, cutting incident tickets from 50 to 30 per quarter.
  • Administered Windows infrastructure services including Active Directory, DNS, and File Services, centralizing IT asset control and streamlining access management for over 300 users.
  • Led design and deployment of segmented SCADA network, improving uptime from 98% to 99.8%.
  • Spearheaded SOC monitoring using SIEM tools and Elastic Security, decreasing mean time to detection by 25%.
  • Presented weekly threat-report dashboards to management, enhancing executive visibility of security posture.

Network Security Analyst

The Quantum Group
07.2018 - 01.2020
  • Implemented firewall migration to FortiGate, boosting throughput by 20%.
  • Deployed a fully open-source remote work suite, including Jitsi-Meet, OwnCloud, and WireGuard VPN, in response to COVID-19, increasing remote productivity by 128% and avoiding costly proprietary software fees.
  • Led a cybersecurity team in designing and executing enterprise-wide security strategies, reducing critical vulnerabilities by 78% and enhancing overall system resilience.
  • Modernized and overhauled internal network infrastructure by replacing legacy hardware with high-performance equipment, increasing network stability and boosting production output by 588%.
  • Trained and mentored 5 junior analysts on SOC processes and incident response protocols.

Education

M.Sc. - Financial Technology

University of Nottingham
12.2023

B.Sc. - Computer Science

Kwame Nkrumah University of Science and Technology
06.2018

Skills

  • Kubernetes
  • Ceph
  • Docker
  • VMware (ESXi)
  • Proxmox
  • Python
  • SQL
  • Debian Server
  • GDPR
  • ISO 27001
  • NCSC Cyber Essentials
  • NIST

Certification

  • CISSP, in progress, 2025-12-31
  • Cybersecurity Analyst+ (CompTIA), 2021
  • CompTIA Security+, 2021, Renewing via CEUs
  • AWS Certified Cloud Practitioner, 2021
  • HCIA Routing & Switching, 2020

Timeline

Cybersecurity, GRC Analyst

Freelance and Remote
12.2023 - Current

Senior Network Security Engineer

The Quantum Group
01.2020 - 09.2022

Network Security Analyst

The Quantum Group
07.2018 - 01.2020

B.Sc. - Computer Science

Kwame Nkrumah University of Science and Technology

M.Sc. - Financial Technology

University of Nottingham

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Kennedy Osei AsibeyCyberSecurity