System Engineer Senior

Reeves Mungyeh

Senior System Engineer

*************@*****.*** +1-513-***-****

Professional Summary

Seasoned System Engineer with 12+ years of experience specializing in Windows, Linux, UNIX, VMware, and Storage administration. Adept in leading the administration, troubleshooting, and performance optimization of systems in dynamic environments. Proven expertise in managing data loads and ensuring seamless operations within SAS environments. Proficient in deploying and automating systems using CI/CD tools like GitLab, Jenkins, GitHub Actions, and Terraform.

Skilled in configuration management with Ansible and containerization using Docker/Kubernetes, including troubleshooting and cluster deployment. Experienced in leveraging monitoring tools such as Grafana and CloudWatch to ensure system reliability. Expertise in vulnerability scanning with Nexus and GitHub for version control, ensuring security and compliance. Hands-on experience with LVM on Red Hat, CentOS, and UFS on Solaris, and a solid track record of successfully migrating code across multiple environments.

Skills

Operating Systems: Linux, Unix, Windows, GCP, AWS, Azure

Automation Tools: Puppet, Ansible, Terraform

Virtualization: VMware ESX/ESXi (versions 5.5, 7.0)

Languages & Scripting: Bash, Shell scripting, Python

Repository & CI/CD: Git, GitLab, Jenkins, GitHub Actions,

Containerization & Orchestration: Docker, Kubernetes Clusters, OpenShift, Docker Swarm, Helm,

Cloud Platforms: AWS (EC2, S3), Google Cloud Platform (GCP)

Monitoring & Logging: Grafana, Prometheus, Nagios, CloudWatch, ELK Stack (Elasticsearch, Logstash, ), Splunk,

Collaboration & Project Management: Jira, Confluence, Microsoft Teams, Monday.com

Professional Experience:

Intel, Santa Clara, CA Apr 2023 – Present

Sr System Engineer/DevOps

Designed and deployed a scalable, secure e-commerce platform using Kubernetes. The architecture followed microservices principles with individual services (e.g., catalog, cart, payment, auth) deployed as separate pods with full CI/CD automation using Github Actions + ArgoCD and ArgoCD auto-syncs changes to Kubernetes. ArgoCD monitors Helm chart repo on change, syncs manifests to the cluster.

Designed and deployed a secure, scalable API platform for a digital banking service using Red Hat OpenShift 4.x on a hybrid cloud (on-prem OpenShift + AWS OpenShift Dedicated). The platform exposes microservices via APIs for mobile and partner integrations.

Played a key role in the migration of on-premise applications to AWS cloud infrastructure, improving scalability and reliability, and achieving a 25% reduction in infrastructure costs.

Optimized monitoring and alerting systems using Prometheus, Grafana, and ELK Stack, reducing system downtime incidents by 15% and improving incident response time by 30%.

Used Terraform as infrastructural deployment tool to spin up Ec2 instances in AWS, Create AWS Organization Unit to managed AWS resources, create policy to restrict users access, Create IMAs users and S3 bucket attached policies to buckets.

Write Helm chart scripts for Kubernetes Deployments such as Pods Replication, Kubernetes services such as (Ingress/Nodeport,Loadbalancer and Selector Service which is used to match services to correct Pod by lebelling )

Worked closely with developers, helping them with infrastructural needs such as creating VMs from scratch for new projects, troubleshooting accessibility issues, creating and granting permission.

Deploy a globally available SaaS app using EKS clusters in us-east-1 and eu-west-1, with DR failover

System support, supporting users resolving incident ticket using ticketing system like service Now and Remedy.

CITY OF DAYTON, DAYTON, OH Oct 2022 – Apr 2023

Sr System Engineer/DevOps

Used Terraform to provision and manage a complete three-tier web application infrastructure on AWS, including networking, compute, security, monitoring, and autoscaling. The environment is production-grade and supports full CI/CD integration with GitHub Actions.

Designed and implemented a data analytics platform on Microsoft Azure using Azure Kubernetes Service (AKS), Azure Synapse Analytics, Azure Data Lake, and Terraform. The platform supports real-time data ingestion, processing, and reporting across a hybrid environment for a healthcare company

Managed 100% of existing AWS Cloud environments, automation, monitoring metrics, disaster recover/backups and capacity planning.

Migrated and modernized an on-premises Active Directory (AD) environment to a hybrid identity model using Azure Active Directory (Azure AD). Implemented secure, conditional access and identity governance policies for 2,000+ users in a finance organization to support remote and cloud-native applications.

Ensure 100% of all project documentation was created and updated, including design, development and deployment documentation.

Secure and audit an EKS environment to meet PCI-DSS and SOC2 requirements for a FinTech company such as Authenticating IAM Roles for Service Accounts and Secret encryption.

Automated configuration management for over 100 servers using Ansible, ensuring consistent, reliable, and efficient system configurations across environments.

Involved in designing Linux server environments for developers and testers,

supporting them, and documenting procedures for IT support.

Working closely with developers on developing and supporting new features and

services.

Optimizing an existing VMware vSphere 7.0 cluster, deploying a new high-availability (HA) architecture, and automating VM provisioning using Ansible. The environment supported a mix of Linux (RHEL, Ubuntu) and Windows workloads with strict uptime and compliance requirements.

T&T IBM, Cincinnati, OH May 2021- Sep 2022

Sr System Engineer

Spearheaded the transition from manual infrastructure management to fully automated deployments using Terraform and Jenkins, reducing manual effort and enhancing deployment consistency.

Implemented continuous integration pipelines with GitLab CI, streamlining code testing and deployments, leading to faster delivery cycles and more reliable releases.

Managed and maintained large-scale AWS infrastructure, focusing on security, cost optimization, and scalability to support high availability and efficient resource utilization.

Developed and maintained automation scripts in Bash and Python for critical tasks such as server patching, backups, and log management, driving improved operational efficiency and reducing manual intervention.

Optimizing server performance. Troubleshooting, determining the root cause and

working on solutions and implementation.

Participate in technical research and development to enable continuing innovation

within the infrastructure domain. Production operations (code deployments, upgrades, system patches).

Involved in designing Linux server environments for developers and testers,

supporting them, and documenting procedures for IT support.

Working closely with developers on developing and supporting new features and

services.

Fifth Third Bank, Cincinnati, Ohio Dec 2019 - May 2021

Lead System Administrator/Production Support/SAS Platform

Led a full migration of legacy Windows Server 2012 R2 and 2016 workloads to Windows Server 2022 in a financial services environment. The project included Active Directory integration, role-based hardening, and application rehosting for SQL Server, IIS, and file services.

Maintained an information map to reflect revisions and new developments in the underlying database structure, ensuring accurate and up-to-date documentation.

Managed the security model for users, groups, and roles, serving as an internal escalation resource for platform-related issues and ensuring secure access controls.

Administered SAS Management Console, SAS Miner, SAS Enterprise Guide, and SAS Studio on AIX Unix servers, including user management, troubleshooting access issues, and creating new libraries using SAS 9.4. Monitored the SAS filesystem and executed disaster recovery procedures on behalf of the team.

Maintained UFS Solaris 10, ZFS Solaris 11, and LVM Red Hat 6/CentOS 6 servers in a virtualized environment, optimizing server performance and stability.

Configured and maintained virtual server environments using VMware ESX/ESXI 5.0, 5.5, along with vSphere and vCenter, ensuring seamless virtualization and resource management.

Set and monitored scheduled jobs through Schedule Manager and ensuring timely execution of critical tasks and processes.

Deployed Dynatrace Managed (self-hosted) in a private data center to monitor legacy Windows and Linux servers, Java/.NET applications, Oracle DB, and VMware vSphere, integrating with existing ITSM tools like ServiceNow and Splunk for event handling and log analysis.

Participated in code migration across various environments, ensuring smooth transitions and minimal downtime during system updates.

Used Confluence for advanced studies and documentation, ensuring knowledge sharing and maintaining comprehensive records for the team.

General Electric, Louisville, KY Aug 2018 – Dec 2019

Senior Linux / System Engineer

Designed and deployed an Ansible-based automation framework to manage patching, configuration enforcement, and compliance reporting across over 200 on-prem Linux and Windows servers (RHEL, CentOS, and Windows Server 2016/2019) in a hybrid VMware vSphere environment.

Managed Windows Server versions 2010 and 2012 and provided desktop support for versions 7, 8, and 10, ensuring stable system operations and end-user support.

Implemented Backup and Disaster Recovery (BDR) solutions for HP-UX and Red Hat servers, ensuring critical data was consistently protected and recoverable.

Ran weekly security patching every Wednesday, launching updates every Thursday, and built virtual machines from scratch to support developers and migrations. Managed daily and weekly backups of Ubuntu servers and performed system uptime management and troubleshooting of failures.

Managed troubleshooting of problem and service tickets via ServiceNow, addressing monitoring tool-related issues and resolving network problems across TCP/IP, DNS, SSH, TELNET, and file-sharing protocols such as NFS.

Created and managed AWS EC2 instances, integrated CloudWatch, and set up S3 buckets for migration purposes. Configured load balancers and health checks, and implemented IAM by creating S3 bucket groups, user policies, and permissions.

Worked with AWS Storage Gateway to support VMware ESXi and Microsoft Hyper-V environments for Virtual Machine image installation on hosts, ensuring seamless cloud integration.

Utilized AWS Glacier for data backup and archival, ensuring long-term storage solutions for critical data with cost-effective access management

Cincinnati Bell Technology Solutions General Electric, Sharonville, OH Jun 2015 - Aug 2018

Systems Administrator

Designed and deployed an Ansible-based automation framework to manage patching, configuration enforcement, and compliance reporting across over 200 on-prem Linux and Windows servers (RHEL, CentOS, and Windows Server 2016/2019) in a hybrid VMware vSphere environment.

Installed and configured Red Hat Enterprise Linux (RHEL), CENTOS, Ubuntu, and UNIX Solaris servers on Dell hardware and in VMware virtual environments, ensuring reliable and scalable system deployment.

Maintained UFS Solaris 10, ZFS Solaris 11, and LVM Red Hat 6 / CentOS 6 servers in a virtualized environment, leveraging VMware ESX/ESXI versions 5.0 and 5.5, along with vSphere and vCenter for efficient virtual server management.

Managed client servers and applications by granting user access, configuring power path for NAS devices, and performing disk management using LVM (Logical Volume Management) and SVM (Solaris Volume Management) to ensure optimal storage performance.

Developed and maintained Bash and PowerShell scripts to automate operating system tasks, including log analysis, system monitoring, and software installations, improving system efficiency and reducing manual intervention.

Managed system security in client environments, including email encryption, password aging, and VPN (F5) for secure remote access, while providing support center assistance for end users, including password resets and user management.

Ran weekly security patching, with plans for every Wednesday and deployment on Thursdays, and built VMs from scratch to create servers for developers and migration. Ensured system uptime management and resolved failures promptly to maintain smooth operations.

Education

Bachelor's Degree in Economics

University of Yaoundé II, Cameroon 2004 – 2008

Certifications

AWS Certified SysOps Administrator – Associate

AWS Certified Solutions Architect – Associate

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