REJOICE OKAFOR
@rejoiceokafor
Results-driven Cybersecurity Engineer with expertise in cloud security.
What I'm looking for
I am a results-driven Cybersecurity Engineer with over 3 years of hands-on experience in securing Microsoft Azure and hybrid cloud environments. My specialization lies in threat detection, cloud compliance, and Zero Trust Architecture utilizing Microsoft and AWS tools. I have a proven ability to lead enterprise-wide XDR deployments, enforce security automation, and align security operations with ISO 27001, NIST, and GDPR standards. My efforts have successfully automated governance, reduced risk, and enhanced incident response efficiency by over 50%.
In my current role as a Senior Cybersecurity Engineer at Infinion Technologies, I have led the end-to-end deployment of Microsoft Defender XDR, Sentinel, and other security tools for over 10 clients, securing more than 5,000 identities and workloads. I have enforced Conditional Access and MFA policies, significantly cutting unauthorized access by 60%. My technical expertise extends to automating user access provisioning and managing internal vulnerability lifecycles, which has decreased risk exposure by 40%. I am adept at collaborating with stakeholders to drive enterprise security maturity and ensure compliance with industry standards.
Experience
Work history, roles, and key accomplishments
Senior Cybersecurity Engineer
Infinion Technologies
Apr 2023 - Present (2 years 5 months)
Led end-to-end deployment of Microsoft Defender XDR, Sentinel, Entra ID, Defender for Cloud, and Purview for over 10 clients, securing 5,000+ identities and workloads. Automated provisioning of user access/security policies using PowerShell, ARM, and Azure Blueprints, reducing manual efforts by 50%.
Information Security Analyst
Brandisa Digital
Oct 2022 - Present (2 years 11 months)
Performed penetration testing and risk analysis on 15+ assets, resolving 200+ vulnerabilities. Supported ISO 27001, SOC 2, and NIST compliance audits through policy validation and remediation.
Cybersecurity Trainee
Cybersafe Foundation
Mar 2022 - Present (3 years 6 months)
Trained in IAM, threat intelligence, incident response, and cloud security. Led phishing simulation and security training for 100+ individuals.
Education
Degrees, certifications, and relevant coursework
Michael Okpara University of Agriculture, Umudike
B.Sc., Plant Science & Biotechnology
2017 - 2022
Grade: First Class Honors
Graduated with First Class Honors in Plant Science & Biotechnology. The curriculum provided a strong foundation in scientific research and analytical methodologies.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
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