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chidubem oparaoji

@chidubemoparaoji

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Senior Linux Systems / DevOps engineer driving reliable, secure, cloud-native infrastructure.

United States

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What I'm looking for

I seek a senior DevOps/SRE role focusing on automation, secure cloud infrastructure, observability, and scalable CI/CD in an engineering-driven team.

I am a Senior Linux Systems Engineer and DevOps professional with ten years of IT experience, including extensive Linux and Windows administration, cloud engineering, and cybersecurity. I have led infrastructure upgrades, automated provisioning and patching at scale, built IaC pipelines with Terraform and Ansible, and deployed monitoring with Prometheus/Grafana and ELK to improve reliability and observability.

I have delivered enterprise solutions for federal and large private-sector clients, automated CI/CD with Jenkins/GitHub and AWS services, migrated and upgraded large server estates, and enforced compliance with DISA STIG/NIST controls. I prioritize automation, security, and clear operational documentation to enable resilient, auditable production environments.

Experience

Work history, roles, and key accomplishments

Current

Linux Systems Engineer

Current

SNC, Johnson Service Group

Mar 2023 - Present (2 years 9 months)

Installed and maintained Ansible Tower, Prometheus/Grafana, Apache NiFi, Keycloak and other infrastructure components; automated provisioning, patching and deployments across RHEL/CentOS/OEL and AWS, reducing manual tasks by ~70% and improving compliance with DISA STIG.

Ansible CentOS Terraform AWS EC2 ECS S3 Prometheus Grafana Jenkins Keycloak Elasticsearch

DevOps Engineer

Food and Drug Administration

Feb 2022 - Mar 2023 (1 year 1 month)

Implemented IaC with Ansible and CloudFormation, managed Jenkins pipelines and containerized deployments, and deployed monitoring with Prometheus/Grafana/Nagios to improve stability and automate delivery across environments.

Ansible AWS EC2 ECS S3 Jenkins Docker Kubernetes Prometheus Grafana Terraform

Linux System Engineer

NASA, Office of the Chief Engineer

May 2018 - Jan 2022 (3 years 8 months)

Supported multiple environments and cloud-based license services using Terraform and RHEL; performed backups, vulnerability remediation, migration tasks and tool deployments (Tableau, Datadog) to ensure availability and observability.

Terraform RHEL AWS BASH Datadog Tableau Vulnerability Management

Site Reliability Engineer

Deutsche Bank

May 2017 - Apr 2018 (11 months)

Managed OpenStack and Docker UCP environments, operated and monitored ~400 servers, used GitLab for deployments and Kibana/Elasticsearch for log-driven troubleshooting and alerting to improve uptime and incident response.

OpenStack Docker UCP Gitlab Elasticsearch Kibana BASH Nagios Git Linux Administration

Security Assessment Engineer

Accenture

Jul 2016 - Apr 2017 (9 months)

Performed cloud and application security assessments, implemented NIST/RMF controls and STIG-compliant hardening on RHEL/Oracle Linux, and automated security controls in AWS to support FedRAMP and compliance efforts.

AWS Nessus Ansible SQL Security Assessments Vulnerability Management

Linux System Engineer

P.S.I

Jul 2015 - Apr 2016 (9 months)

Supported military mobile-server applications, performed OS hardening to DoD standards, automated operational tasks with scripting, and managed imaging/patching and disaster recovery for production and mobile environments.

RHEL Windows Server Shell Scripting Oracle Weblogic Remedy

Senior Linux System Engineer

Department of State

Nov 2014 - Jul 2015 (8 months)

Built and maintained high-availability Linux and AWS infrastructure for .gov sites, managed MySQL/MongoDB databases, and deployed monitoring and security practices to secure and stabilize public-facing platforms.

Linux AWS MySQL MongoDB Nagios BASH HA Architecture WordPress

Helpdesk Support Analyst

Howard University Hospital

Apr 2014 - Oct 2014 (6 months)

Provided first- and second-level support for Windows and iOS devices, managed ServiceNow tickets, assisted with Office 365 migrations, and maintained asset tracking and SOPs to improve support efficiency.

ServiceNow Active Directory Office 365 HelpDesk+Ticketing Troubleshooting