Opeyemi Oguntayo

Security Engineer

LinkedIn | GitHub

About

Highly accomplished Cybersecurity Engineer with deep expertise in safeguarding multi-cloud infrastructures (AWS, Azure, GCP) at enterprise scale. Proven ability to identify, remediate, and manage cloud misconfigurations and vulnerabilities, implementing secure configurations and patches across hundreds of resources. Leverages Infrastructure as Code (IaC) and DevSecOps principles to enhance security posture, streamline operations, and drive a proactive security culture.

Work Experience

Information Security Engineer

Cencora (fka Amerisource Bergen) | Full time

Mar 2025 - Present

Vilnius, Lithuania, Lithuania

Currently safeguarding enterprise cloud infrastructures by identifying and remediating misconfigurations and vulnerabilities across multi-cloud environments.

  • Collaborated with cross-functional teams to deliver comprehensive security reports and mitigation strategies, fostering a proactive security posture across the organization.
  • Executed continuous vulnerability assessments and remediation using Qualys, integrating findings directly into cloud security posture management systems to enhance defensive capabilities.
  • Spearheaded cloud infrastructure hardening initiatives, implementing robust configuration management and continuous compliance validation across Azure, GCP, and AWS environments.
  • Partnered with engineering teams to design and implement secure, scalable cloud architectures, ensuring adherence to regulatory requirements and industry best practices.

DevSecOps Engineer

AskyourPDF

Apr 2023 - Jan 2025

Manchester, United Kingdom (Remote), GB

Optimized software delivery and infrastructure processes through automation, CI/CD, and Infrastructure as Code practices.

  • Optimized infrastructure costs by introducing containerization, streamlining deployment processes and resource utilization.
  • Collaborated on CI/CD pipeline implementation, reducing deployment time by 20% and increasing deployment frequency by 15%, significantly improving software delivery efficiency.
  • Developed and maintained PowerShell and Python scripts, automating critical operational tasks and boosting team efficiency by 40%.
  • Architected and implemented reusable IaC templates with CloudFormation and Terraform, standardizing provisioning and reducing setup time by 50% across development environments.
  • Engineered Docker containers to refactor monolithic applications into microservices, significantly enhancing developer workflow and system scalability.
  • Ensured all DevSecOps processes adhered to ISO 9001 requirements, maintaining meticulous documentation for management and compliance audits.

Cloud Support Engineer

Found Technology

Jul 2024 - Nov 2024

Lagos, Nigeria (Remote), NG

Provided comprehensive cloud infrastructure support, ensuring high levels of client satisfaction through effective issue resolution and onboarding.

  • Managed and resolved customer technical issues efficiently using the ServiceNow platform, ensuring timely resolution and clear communication.
  • Partnered with the tech sales team to proactively identify and resolve client-related cloud issues, achieving high levels of customer satisfaction.
  • Delivered expert technical support for complex cloud infrastructure challenges, providing effective solutions tailored to client needs.
  • Successfully onboarded new clients to Found's cloud infrastructure, designing and executing tailored integration processes for seamless transitions.
  • Implemented a proactive follow-up system to ensure complete customer satisfaction and resolve all outstanding technical issues.
  • Fostered a collaborative team environment, actively supporting colleagues to enhance overall team productivity and knowledge sharing.

Cloud Engineer - Freelance

Ravetek Consulting

Jan 2021 - Mar 2023

Abuja, Nigeria, NG

Delivered efficient helpdesk and shared hosting support, ensuring optimal performance, security, and uptime for client websites.

  • Provided efficient helpdesk support, managing a high volume of technical tickets through a dedicated ticketing platform.
  • Leveraged OS ticketing systems to meticulously log, track, and resolve diverse customer technical issues.
  • Delivered comprehensive technical support for shared hosting environments, managing deployment, recovery, and advanced troubleshooting with cPanel and Plesk.
  • Ensured optimal performance, security, and high uptime for client websites through expert support and proactive maintenance.
  • Authored detailed technical documentation and codebase records, ensuring accurate future reference and streamlined maintenance operations.

Technical Support Engineer

Dado Foods

Feb 2019 - Jul 2021

Jos, Nigeria, NG

Provided comprehensive IT support, including macOS system administration and Active Directory management, to ensure seamless user operations.

  • Delivered comprehensive IT support, including macOS system administration, ensuring seamless operational efficiency and high user satisfaction.
  • Managed user accounts, passwords, and permissions within Active Directory, enhancing access control and security protocols.
  • Resolved complex login and access issues for network users efficiently by leveraging Active Directory expertise.
  • Provided technical assistance to Office 365 users, addressing account access, password resets, and general troubleshooting queries.

Education

Informatics Engineering - Information Systems And Cybersecurity

Vilnius University

Sep 2024

Vilnius, Lithuania, Lithuania

Certificates

Microsoft Certified: Security, Compliance, and Identity Fundamentals

Microsoft

Apr 2025

Microsoft Certified: Azure Fundamentals

Microsoft

Mar 2025

AWS Cloud Practitioner

Amazon Web Services - AWS

Jul 2024

Projects

IpReverseK8s

Developed a FastAPI web application containerized with Docker, deployed on a DigitalOcean Kubernetes cluster, and provisioned with Terraform, with CI/CD managed via GitHub Actions.

Ansible Automation of LAMP Stack Deployment

Created a sophisticated automation project to set up a LAMP (Linux, Apache, MySQL, PHP) stack on Ubuntu servers using Vagrant and Ansible, embodying modern DevOps practices.

Terraform AWS Infrastructure Deployment

Developed a reusable, modular Terraform configuration to provision highly available Ubuntu instances across multiple AWS regions and environments.

Socks Shop Microservice-based Application Deployment on Kubernetes using IaC (Terraform)

Deployed the Socks Shop application on a Kubernetes cluster using an Infrastructure as Code approach, provisioning AWS resources, setting up a deployment pipeline, and securing the infrastructure.

Flask + Celery + RabbitMQ-Server Messaging Application

Designed a messaging system application to facilitate asynchronous email sending and logging operations through a Flask web interface and Celery task queueing system.

NumberFunFactAPI

An API that takes a number and returns interesting mathematical properties about it, along with a fun fact.

Languages

English

Skills

Cloud Security

  • Multi-Cloud Security (AWS, Azure, GCP)
  • Cloud Misconfiguration Auditing & Remediation
  • Enterprise-Scale Security Posture Management
  • Cloud Infrastructure Hardening
  • Continuous Compliance Validation

DevSecOps & Automation

  • Infrastructure as Code (IaC)
  • Automation
  • CI/CD Pipelines
  • Docker
  • Kubernetes
  • Helm
  • Terraform
  • CloudFormation
  • Ansible
  • GitHub Actions
  • Vagrant
  • Microservices

Vulnerability Management

  • Vulnerability Assessments
  • Remediation
  • Qualys
  • Patching

Programming & Scripting

  • PowerShell
  • Python
  • PHP
  • Bash
  • SQL
  • Flask
  • Celery

System & Network Administration

  • macOS Systems
  • Active Directory
  • Office 365
  • cPanel
  • Plesk
  • Linux
  • Apache
  • MySQL
  • RabbitMQ
  • PostgreSQL
  • Prometheus
  • ELK Stack

Technical Support & Service Management

  • Helpdesk Support
  • ServiceNow
  • Client Onboarding
  • Technical Troubleshooting
  • Customer Satisfaction
  • Ticketing Systems

Security Practices

  • Application Security
  • Secure SDLC
  • Offensive Security Skills
  • Security Architecture Design
  • Regulatory Compliance (ISO 9001)
  • Incident Response