Chima Ogbeleje

Allen,TX

Summary

Results-driven Software Engineer and DevOps professional with 15+ years of hands-on experience designing, developing, and scaling full-stack applications and secure cloud infrastructure. Core expertise in backend engineering (Python, Node.js), full SDLC ownership, custom feature development, and code architecture for high-traffic consumer platforms. Excelled at integrating DevSecOps practices into development workflows, including automated security scanning, threat modeling, and secure coding. Deeply experienced in application security, cloud engineering, and incident automation. Seeking Application Security Engineer, Cybersecurity Engineer, DevSecOps or related positions on a FULLY remote basis.

Overview

years of professional experience

Certification

Work History

Founder & Lead Developer

Byterunner.co

03.2025 - Current

Launched Byterunner.co, a free-to-play cybersecurity survival game (endless runner format) themed around “THE CYBER STORM,” where players dodge threats and collect protection kits to survive — educating hundreds of players on real-world cybersecurity concepts such as threat avoidance and defensive strategies.
Automated operational pipelines using Python and AWS to mirror security monitoring and incident alert handling workflows.
Implemented core security features including user authentication, secure data flows, and basic logging to support game progress and player accounts in a production environment.

Senior Software Engineer (DevOps Focus)

Pepster

London, United Kingdom

06.2020 - Current

Led full-stack development and architecture of the core experiential dating platform backend using Python and Node.js, building scalable matching algorithms, user profile systems, identity verification and trustless attestation methods that supported 100K+ monthly active users with 99.9% uptime.
Owned end-to-end SDLC for major releases: designed RESTful APIs, implemented secure authentication flows (OAuth 2.0, JWT, MFA), and optimized database queries for high-traffic workloads.
Architected and deployed AWS cloud infrastructure using Terraform (IaC) and Ansible, enforcing least-privilege IAM policies, VPC segmentation, and encryption standards to protect user data while maintaining rapid feature velocity.
Integrated secure CI/CD pipelines with GitHub Actions and automated security gates, preventing 95% of common vulnerabilities from reaching production environments.
Conducted regular code reviews and secure design sessions with engineering teams, training 20+ developers on secure coding practices and reducing the overall attack surface by 40%.
Developed monitoring and logging solutions with Prometheus, Grafana, and Linux-based ELK Stack, enabling 30% faster mean-time-to-remediation for security and performance incidents across multi-region deployments.

Freelance DevSecOps & Software Engineer

Toptal

Remote

06.2013 - 12.2019

Engineered and delivered custom full-stack solutions for 28+ enterprise SaaS and fintech clients, including backend development in Python and Node.js for secure data-processing applications handling sensitive user information.
Designed and implemented core application features such as real-time dashboards, API endpoints, and database schemas using PostgreSQL, while embedding security controls from the initial architecture phase.
Built and maintained CI/CD pipelines with Jenkins and GitHub Actions, integrating automated SAST/DAST scanning (Snyk + SonarQube) and secret detection, reducing production vulnerabilities by 45% and cutting deployment cycles by 35%.
Developed Python and Bash automation scripts for threat intelligence enrichment, log parsing, and incident response workflows, integrated with ELK Stack and Prometheus for proactive monitoring in Kubernetes environments.
Led threat modeling sessions during SDLC phases and performed secure code reviews, mitigating OWASP Top 10 risks (e.g., injection, broken authentication) before merge, resulting in zero critical findings in external penetration tests.
Hardened containerized applications with Docker and Kubernetes (image scanning via Trivy, network policies, RBAC), achieving SOC 2 and GDPR compliance for production deployments.
(and ongoing select projects)

Education

Bachelor of Science - Computer Science

University of Essex

Essex, United Kingdom

Skills

Software Engineering & Development: Python, Nodejs/JavaScript, Backend Architecture, RESTful APIs, Secure Authentication (OAuth/JWT), Database Design (PostgreSQL, MongoDB)
DevOps & CI/CD: Docker, Kubernetes, Terraform, Ansible, Jenkins, GitHub Actions, GitLab CI
Cloud & Infrastructure: AWS (EC2, IAM, VPC, S3, Lambda), Azure Fundamentals, Cloud Security (VPC), Secure Network Design
Security & Compliance: OWASP Top 10, Threat Modeling, SAST/DAST (Snyk, SonarQube, Trivy), Secure SDLC, IAM & Zero Trust, SOC2 Compliance, Security Controls, Vulnerability Scanning, DevSecOps, Secure Coding Practices

Networking & Systems: TCP/IP Protocols, Network Security, Linux Administration, SIEM Log Analysis (ELK), Firewall/VPN Configuration, Log Analysis, Threat Detection
Automation & Tooling: Python (Automation), Bash, Terraform (IaC), Docker, Kubernetes, Git, Nmap
Monitoring: Prometheus, Grafana, ELK Stack