Devops Engineer Systems

Teila Marshall

Location: Houston, TX

Contact info:

Phone number: 443-***-****

Email: **********@*****.***

SUMMARY:

Linux Systems Engineer with Four years of experience in maintaining and enhancing Linux-based systems for high performance and uptime. Strong background in automation, scripting, and minimizing system outages to drive operational efficiency. Success in implementing scalable infrastructure solutions that support seamless operations. Now focused on expanding into roles that emphasize cloud integration, optimizing development lifecycles, and utilizing cutting-edge tools to build robust, scalable systems across various cloud platforms specifically in the realm of a DevOps Engineer and Cloud Engineer

Education:

Stanly college: Associates In Information Technology - Network management (Graduation date: 2026)

CERTIFICATES:

• CompTIA Server Plus Certified

• RHCSA (scheduled)

• LPIC-1 Certified

• AZ-104: Microsoft Azure Administrator Certified

• AZ-900: Microsoft Azure Fundamentals Certified

• RHCE (Scheduled)

• CompTIA Security Plus Certified

• CompTIA Linux Plus Certified

• LPI Linux Essentials Certified

• Microsoft Certified: DevOps Engineer Expert (scheduled)

• AWS Certified DevOps Engineer – Professional Certified (scheduled)

TECHNICAL SKILLS:

- # SOFTWARE: Ansible, AWX, VmWare ESXI 7.0, Powershell, RedHat Satellite, Prometheus & Grafana, vSphere Client, Unitrends Backups, ServiceNow, Atlassian Jira, Nagios, Zabbix, RedHat IDM, MobaXterm ssh client, KVM, Active Directory, Vagrant, RedHat Kickstart, LibVirt, Hyper-V, .NET 6, Azure Functions, AWS EC2, AWS CloudFormation, AWS Lambda, Nagios, Zabbix, Kubernetes, ELK Stack, AWS CloudWatch, Azure VMs, AKS, EKS, Fargate, ECS, SCCM, Splunk

- # NETWORKING: TCP/IP, UDP, DNS, DHCP, LAN, WAN, FTP/SFTP, RDP, SSH, RDP, Firewalld, WireShark, OpenVPN, Fail2Ban, OpenSSH, Netplan, NIC, Routers & Switches, WPA, WPA3, BGP, OpenSSH, Tcpdump, Vlans, ACL, SNMP, PAT, SMTP, HAproxy, LDAP, BIND, Fail2Ban, IPv4, IPv6, DNSSEC, HTTP, HTTPS, IPsec, CIDR notation, Subnets, Gateways, Apache, Nginx, Route 53, AWS VPC, NTP, ELB (Elastic Load Balancing), AWS Security Groups, Azure VNets, Palo Alto, Cisco ASA, Fortinet, F5 loadbalancer, Zscaler, Azure DNS

- # PROGRAMMING LANGUAGES: Shell Scripting (Bash [.sh] & Z Shell [.zsh]), Yaml, Python, PowerShell Scripting, C/C++, Batch Scripting, HCL, Json

- # Security: SElinux, ACLs, AppArmor, PAM, SSL/TLS, PKI, Kerberos, AIDE, IDS/IPS, Snort, OpenScap, Azure AD, Azure Key Vault, AWS IAM, AWS KMS (Key Management Service), DISA STIGs, CIS Benchmark, NIST SP 800-53, GPO

- # INTEGRATION: APIs, RESTFUL APIs, Azure Logic Apps, Postman

- # CLOUD: AWS, Azure

- # OPERATINGSYSTEMS: RHEL 5-9, CentOS 5-9, Ubuntu, Windows 10 & 11, Windows server 2019, Oracle, AWS CLI, Azure CLI

- # STORAGE: LVM, SATA, Ext4, XFS, SAN, NFS, AutoFS, NAS, SAMBA, Raid(0/1/5/6/10), MBR/GPT, Rsync, Tar, iSCSi, GlusterFS, Azure Blob Storage, AWS Storage Gateway, Azure Data Lake Storage, Azure Disks, AWS s3, ZFS, Amazon EBS (Elastic Block Store), Amazon EFS (Elastic File System)

- # DATABASES: Redis, PostgreSQL, MySQL, Mongo DB, AWS Aurora, Azure Comos DB, AWS DynamoDB

- # Deployment/Hosting/Middleware: Apache HTTP, Apache Tomcat, Nginx, JBoss, WildFly, RabbitMQ

- # HARDWARE: HP ProLiant Servers, Dell Docking Station, iDrac

- # DevOps: Docker, Chef, Kubernetes, Git, GitHub, Jenkins, Terraform, AWS CodePipeline, Azure DevOps, Azure Pipelines, GitLab CI/CD, GitOps with ArgoCD, GitHub Actions, Selenium, Blue/Green Deployments, Slack, Trello, Atlassian Jira Confluence

PROFESSIONAL EXPERIENCE:

NextGen Data Cloud., Fredericks, MD. Mar 2022 – Present

Linux Systems Engineer

Project(s):

-Server Migration:

Assess the existing Linux server environment and create a detailed migration plan for VMware.

Set up virtual machines in VMware with appropriate resource allocation and networking configurations.

Migrate Linux servers using VMware tools, ensuring data integrity and minimal downtime.

Test the migrated servers for stability, performance, and functionality before final deployment.

Experience:

• Developed a robust, automated infrastructure using Ansible, AWX, and Terraform, streamlining deployments for healthcare clients, reducing provisioning time and improving system reliability.

• Configured and maintained AWS EC2 and Azure VMs with RedHat Satellite and vSphere Client, ensuring high availability and reducing downtime for critical healthcare applications

• Automated network monitoring with Nagios and Zabbix, leveraging TCP/IP, DHCP, and DNSSEC protocols, resulting in a reduction in network issues for automotive clients.

• Built scalable containerized applications using Kubernetes (AKS and EKS) and Docker for seamless integration, which led to a 25% increase in efficiency for automotive software development.

• Optimized backup strategies using Unitrends Backups and AWS S3, ensuring secure and fast recovery for client databases like PostgreSQL, reducing data loss risks

• Deployed and maintained Apache Tomcat, Nginx, and JBoss for middleware solutions, improving website performance for healthcare web services.

• Implemented robust security protocols with SSL/TLS, SELinux, and CIS Benchmark across RHEL and Windows Server 2019, reducing security vulnerabilities in client environments.

• Developed infrastructure-as-code solutions using AWS CloudFormation and Azure Functions, reducing manual configuration time and increasing deployment accuracy for client projects.

• Led the integration of RESTful APIs with Postman and Azure Logic Apps for seamless communication between cloud platforms, which enhanced system performance and reduced integration time

• Configured AWS Security Groups, Azure VNets, and Palo Alto firewalls, ensuring secure network segmentation and reducing unauthorized access incidents for multiple clients.

• Optimized storage solutions using Azure Blob Storage, AWS EFS, and iSCSI, improving data retrieval times and increasing storage efficiency for large-scale healthcare applications.

• Automated the deployment pipeline with Jenkins, Azure DevOps, and GitHub Actions, enabling continuous integration and deployment (CI/CD), cutting release cycles for both automotive and healthcare clients.

• Troubleshot and resolved system issues on HP ProLiant Servers using iDRAC and WireShark, reducing hardware failure response time resulting in increased uptime for critical automotive services.

• Monitored and analyzed cloud infrastructure using AWS CloudWatch, Splunk, and Prometheus & Grafana, improving system performance visibility and decreasing incident resolution time

• Implemented secure identity management with Azure AD, RedHat IDM, and AWS IAM, ensuring compliance with NIST SP 800-53 and reducing unauthorized access attempts

• Deployed high-performance databases like Redis, MongoDB, and AWS DynamoDB for scalable applications, increasing data processing speed for healthcare analytics projects.

• Utilized Fail2Ban and Snort to enhance intrusion detection and prevention (IDS/IPS) systems, successfully reducing security breaches across client networks.

• Orchestrated cloud resources using AWS Lambda and Fargate, automating workflows and reducing manual intervention improving client productivity in the automotive sector.

• Led the migration of legacy systems to Hyper-V and KVM, integrating with Active Directory and LDAP, increasing operational efficiency for legacy automotive applications.

• Implemented efficient load balancing solutions with HAProxy, AWS ELB, and F5 load balancers, improving application response time for high-traffic healthcare applications.

• Scripted automated tasks using PowerShell, Bash, and Python, streamlining system management processes, resulting in a reduction in manual errors for automotive infrastructure.

• Managed secure cloud storage solutions using Amazon EBS and Azure Data Lake, optimizing cost and ensuring data redundancy, which improved client satisfaction by 20% in the healthcare sector.

• Configured Nagios and Zabbix for real-time monitoring of client infrastructure, leading to proactive issue resolution and a increase in system uptime for mission-critical healthcare systems.

• Reduced system vulnerabilities by implementing AWS KMS and Azure Key Vault for key management, ensuring secure encryption of sensitive client data and maintaining compliance with healthcare regulations.

• Utilized GitLab CI/CD and Chef to automate deployment across multiple environments, enhancing consistency in software releases and cutting deployment time for automotive software applications.

MATSIM Corporation.. Houston, TX. Feb 2021 – Mar 2022

Linux Engineer/Linux Administrator

Project(s):

-Ansible Automated Patching for Large-Scale Server Infrastructure:

Develop an automated patching playbook in Ansible to efficiently manage the patching process across 20,000 servers.

Group servers into manageable batches for phased patch deployment, minimizing impact and ensuring stability.

Use Ansible’s inventory management to dynamically target specific server groups based on criteria like OS version or application role.

Monitor patching progress and automatically log results, with error handling for failed patches and rollback mechanisms.

Experience:

• Configured and managed VmWare ESXi 7.0 clusters, improving virtualization efficiency and resource management for security services clients, reducing server overhead

• Implemented ServiceNow for incident and problem management across multiple client environments, streamlining IT service management processes and reducing resolution times

• Deployed Vagrant and RedHat Kickstart to automate virtual machine provisioning for security-focused applications, enhancing deployment speed and ensuring consistency across development environments.

• Utilized LibVirt to manage KVM-based virtual machines, creating isolated environments for sensitive security applications, reducing the risk of cross-contamination and enhancing data integrity.

• Developed security-focused applications using .NET 6, improving operational efficiency for clients in public safety roles, while ensuring compliance with industry security standards.

• Configured and supported SCCM for client endpoint management, streamlining software distribution and patch management, reducing downtime and increasing security compliance

• Managed and monitored security services databases using MySQL, ensuring high availability and fast query responses, reducing database downtime

• Led the deployment of Apache HTTP servers to host web applications for civic associations, optimizing performance and ensuring secure communication with SSL/TLS configurations.

• Optimized public-facing infrastructure using Nginx as a reverse proxy for security clients, improving traffic handling and reducing response times

• Implemented robust OpenSSH solutions for secure remote management, ensuring encrypted access to critical systems and reducing the attack surface for client infrastructure.

• Utilized OpenVPN for secure remote access to client networks, ensuring reliable connectivity for distributed teams in the security services industry, enhancing operational capabilities.

• Configured BGP routing protocols for secure, scalable network architectures, optimizing data flow across multiple client sites and improving network reliability

• Managed client network hardware, configuring Routers & Switches for secure and efficient data transmission, reducing network downtime

• Deployed Cisco ASA firewalls to safeguard client networks, enhancing perimeter security and reducing unauthorized access attempts

• Automated data transfer processes using FTP/SFTP, ensuring secure transmission of sensitive client information between systems, decreasing manual errors

• Integrated Zscaler cloud security solutions to provide clients with enhanced web security and threat detection, reducing the risk of cyber-attacks

• Implemented secure storage solutions using SAN and NAS, improving data accessibility and scalability for client systems, ensuring high availability for mission-critical applications.

• Configured network interface controllers (NIC) for optimized performance in security applications, improving throughput and reducing network latency

• Utilized GlusterFS for distributed file storage, enhancing data redundancy and ensuring continuous availability for critical security data across multiple client sites.

• Deployed AWS Aurora to power secure, scalable database solutions for clients, improving database performance and reducing operational costs.

• Set up and maintained secure communications protocols, configuring SMTP for secure email transmission between client teams, ensuring data integrity and reducing phishing threats.

• Implemented BIND for secure DNS management, improving DNS performance and ensuring resilience against DNS attacks for clients’ public-facing infrastructure.

• Deployed RabbitMQ for messaging between distributed security services applications, improving system reliability and reducing message processing delays

• Optimized data backup and recovery strategies using AWS Storage Gateway, ensuring secure, scalable storage for client data, with a 99.9% recovery success rate.

• Monitored client systems using OpenScap to enforce compliance with security policies, ensuring adherence to DISA STIGs and reducing non-compliance incidents by 50%.

• Implemented and managed CyberArk Privileged Access Security solutions for secure handling of privileged accounts in client environments, reducing the risk of unauthorized access and insider threats by 40%, while ensuring compliance with industry security standards.

…….

IceTech Staffing.., Port Louis. July 2020 – Jan 2021

Systems Engineer

Experience:

• Configured and optimized Windows 10 & 11 and CentOS 5-9 systems for clients in defense contracting, ensuring secure and reliable environments for cleared personnel, improving system performance

• Automated the management of large-scale Ubuntu deployments using Ansible, reducing configuration errors and enhancing efficiency across multiple staffing client environments.

• Deployed Oracle databases for IT staffing clients, optimizing query performance and reducing database downtime, ensuring smooth operation of mission-critical applications.

• Utilized AWS CLI and Azure CLI to automate cloud operations for workforce solutions clients, cutting manual workload and enabling faster deployment of temporary and direct hire resources.

• Optimized storage solutions using LVM and XFS file systems for staffing clients with large data sets, improving data management and reducing storage costs

• Configured SAN and NAS storage for defense and cybersecurity staffing clients, ensuring secure and scalable solutions for handling sensitive personnel data, improving data availability

• Integrated AutoFS for dynamic mounting of network storage, improving efficiency in accessing shared resources for administrative and IT staffing personnel, reducing manual configuration by 50%.

• Developed and deployed SAMBA shares for cross-platform file sharing between Windows and Linux environments, increasing collaboration efficiency across staffing departments.

• Implemented RAID 0/1/5/6/10 configurations for high-availability storage solutions, ensuring redundancy and fast recovery for critical staffing data, reducing data loss risk

• Managed boot configurations using MBR/GPT for secure and reliable system setups, improving startup performance and system recovery times for defense contracting clients.

• Automated backup and synchronization processes using Rsync and Tar, reducing manual workload by 40% and ensuring consistent data backups for staffing clients in sensitive industries.

• Configured secure, scalable cloud storage solutions using AWS Storage Gateway and Azure Data Lake Storage, ensuring fast and reliable access to staffing data for clients in the IT and defense sectors.

• Deployed high-performance file storage solutions using ZFS and GlusterFS, enhancing storage scalability and redundancy for large-scale staffing operations, reducing downtime

• Optimized secure cloud storage using Amazon EFS and Azure Disks, ensuring high availability and cost efficiency for clients handling sensitive staffing data, such as cleared personnel in defense.

• Configured high-performance AWS Aurora and MySQL databases for executive search and direct hire services, improving query performance and reducing operational costs for staffing agencies.

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