Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Gerald Che

Houston

Summary

Forward-thinking professional offering more than 10 years of experience working in fast-paced Linux, Windows, VMware and AWS Cloud environments. Expertise in planning, installing and maintaining large-scale systems and infrastructures. Proven leader with success in building strong teams. Completed setup of monitoring of applications using Nagios, Spectrum, Cloud Watch, New Relic. Firm grasp of Linux/Unix security and implementing hardening using CIS and STIG benchmarks. Good understanding setting up SSL at server level. Worked on automation task using Ansible and Terraform. Installed, configured, and deployed Nginx, Apache http, Apache Tomcat. Resolved production/nonproduction issues, conducted root cause analysis, and planned necessary process improvements. Successfully created, automated and provisioned Linux/Unix and Windows based operating systems and applications on on-premises and cloud platforms. Experience in Volume Management using LVM, ZFS, SVM. Disk management in Linux/Unix, disk slicing and partitioning. Networking: TCP/IP, DNS, DHCP, SSH, LAN, WAN, OSI model and network troubleshooting. LDAP and Active directory configuration and administration. Efficient with software installation, package management, patching and upgrade. Experience with Virtualization technologies (VMWare ESXI, Hyper-V, KVM, Citrix Xen). Managing Docker containers. Installation of Docker on Ubuntu, Redhat, created docker images, mounted data volumes and linked containers.

Overview

13
13
years of professional experience
1
1
Certification

Work History

Senior Systems/Cloud Administrator

Transcat Inc.
01.2023 - Current
  • Managed On-premises and cloud infrastructure, ensuring optimal performance and reliability across multiple environments.
  • Collaborated with development teams to integrate cloud solutions into existing workflows, enhancing overall productivity.
  • Oversaw incident response procedures, minimizing service disruptions through effective troubleshooting and resolution strategies.
  • Developed documentation for on-premises and cloud architecture and processes, ensuring clarity and consistency across teams.
  • Performed regular audits of on-premises and cloud environments to ensure compliance with internal policies, industry standards, and regulatory requirements.
  • Ensured high availability of services by designing and implementing fault-tolerant systems.
  • Collaborated with development teams to implement continuous integration and continuous delivery pipelines, accelerating product releases.
  • Implemented a robust backup strategy to ensure data integrity and quick recovery from disasters. Conducted monthly backup testing to verify data integrity and ensure disaster recovery readiness
  • Migrated legacy applications to the cloud, resulting in increased scalability and cost savings.
  • Developed custom scripts for automating routine tasks, reducing manual intervention requirements.
  • Installed and configured network printers and other peripheral devices.
  • Diagnosed and resolved hardware and software issues.
  • Planned and implemented upgrades to system hardware and software.
  • Monitored networks and network devices to resolve technical problems quickly.
  • Maintained flexible schedule and responded to after-hours and weekend emergencies.
  • Implemented, developed and tested installation and update of file servers, print servers and application servers.
  • Evaluated software products to determine compatibility with existing systems.
  • Developed and documented network policies, procedures and standards.
  • Researched and recommended new technologies and strategies for improving system performance.
  • Analyzed complex project server issues and worked on large enterprise and business-critical applications.
  • Deployed and configured Device42 to document and track IT assets across on-premises, virtual, and cloud environments. Automated discovery provided a continuously updated inventory, reducing gaps in asset visibility.
  • Automated patch management of Windows and Linux servers using AWS Systems Manager and WSUS, improving compliance and reducing manual effort.
  • Led acquisition IT integration efforts, migrating websites of newly acquired companies and consolidating them into the corporate Transcat system.
  • Audited Active Directory and cloud environments, strengthening security by validating accounts, enforcing least-privilege access, and correcting misconfigurations.

Senior System Administrator/Engineer

Sysmex America – Sysmex Corporation
01.2021 - 12.2023
  • Administration of AWS Cloud Platform and on premises Private Cloud platform
  • Provided advanced Linux, Windows and AWS Cloud system administration/support for mission-critical systems (Ubuntu/RedHat/Windows)
  • Administration and support of AWS IAM, EC2, S3, VPC, Route53, CloudFront, Systems Manager, CloudFormation, Relational and NoSql databases
  • DevOps support with Ansible automation including Docker/Containers
  • Build, provision, onboard, administration, and support of Linux Virtual (VMs) on Virtualization/cloud platform such as private cloud appliance (PCA) and VMWare
  • Designed storage strategies, LVM management, patching, backup, and recovery strategies with tools such as TSM/Commvault
  • Supporting Networking needs for system administration ( TCP/IP,DNS,DHCP,VPN,Switching & Routing )
  • Windows Active Directory and Group policy administration.
  • Adaptation of best practices/CIS standards and Performance tuning of servers and automation
  • Applied STIGs to Linux & Windows Test and Production environments and performed other hardening activities such as applying application hotfixes.
  • User administration, Security/Access Control/Hardening/Resource monitoring and scaling of Linux and Windows infrastructure
  • Annual attestation of audit and compliance requirements and support of Disaster Recovery DR) exercises
  • Taking part in On-call rotation, Production support, troubleshooting, upgrades/migrations and attending ServiceNow tickets
  • Supporting software/firmware software concurrency and quarterly and ad-hoc patching cycles
  • Performed vulnerability assessment and remediated vulnerabilities for compliance to security standards
  • Installed and supported highly scalable, available, reliable, and secure Infrastructure platform for database/business applications on premises and AWS Cloud
  • Anticipated customer needs and proactively developed solutions to meet them by applying analytical skills and engineering solutions
  • Upholding enterprise policy guidelines and recommend new / improved guidelines
  • Served as a key resource on complex and / or critical issues and developed innovative approaches/Serve as Subject Matter Expert, and mentor
  • Working with Monitoring tool sets such as Zabbix, Grafana, CloudWatch.
  • Used Splunk SIEM tool to review logs and provide solution to related tickets.

Linux System Administrator

Acumentrics INC
03.2017 - 01.2021
  • Involved in designing, implementing, securing and maintaining Linux systems for test, development and production environments
  • Created and maintained Red Hat high-availability clusters
  • Identified and Analyzed issues that hamper performance of systems and work in close coordination with product development team, recommending solutions and fixing issues
  • LAMP stack installation and setup for high performance web hosting
  • Reverse proxy setup using nginx
  • Installation and management of docker containers on Linux platforms
  • Created docker images, mounted data volumes and linked containers
  • Created Kubernetes cluster, deployed Containerized apps in a cluster, scale deployment, and updated containerized apps
  • Performed patching, upgrade and migration of multiple development, Test and Production Databases
  • Built and administered Linux and Windows Servers at a large scale on premises and on Cloud environments
  • Detected and resolved network connectivity issues on multiple systems involving TCP/IP, DNS, DHCP, VPN
  • Managed other services like NTP, POSTFIX, FTP, SFTP
  • Carried out automated installations (Kickstart)
  • Made use of Ansible for major configuration management tasks
  • Created and managed Filesystems, Mount points and RAID volumes on UNIX / Linux
  • Configured SWAP on Centos, RHEL, and Ubuntu systems
  • Responsible for system hardening, system monitoring, security management
  • Maintained systems by applying operating system updates, firmware packages and security patches
  • Prepared, implemented, updated and maintained POAMS and other security compliance documentation (ISO 27001, NIST, CMMC)
  • Knowledge of Agile and DevOps methodologies on software development.

System Administrator

Atrex Energy
01.2015 - 02.2017
  • Troubleshooting issues in a Linux and Unix Enterprise environment affecting customer, user’s deadlines and productivity in a manner that minimizes intrusion in customer’s ability to carry out business activities
  • Implemented centralized logging, auditing of Windows logs with Log parser and rotating Linux logs with Log rotate
  • Active Directory installation and management
  • Administered efficient work on windows servers and provided support to every day operations
  • Created and managed user accounts on Linux and Windows systems
  • Ensured system stability, scalability, security and performance
  • Troubleshooting and resolving OS, application, Malware/virus related issues on various Linux and Windows systems
  • Set up, configured, and troubleshoot TCP/IP, DHCP, DNS, NFS, Samba Servers in a multiplatform LAN
  • Created and managed disk partitions on Ubuntu and RHEL systems
  • Setup and managed file systems and performed RAID configuration
  • Performed hardware and software updates as requested and approved
  • Performed daily and weekly backup operations, ensuring all required File Systems and System Data are successfully backed up to the appropriate Media
  • Created Red Hat high availability clusters using Pacemaker Set up and administered Postfix (Mail server)
  • Supported MS Exchange Server.

System Administrator

MIT, Massachusetts Institute of Technology
02.2013 - 12.2015
  • Setup domain and Active Directory on Windows 2008 and 2012 servers
  • Performed basic Active Directory maintenance and server upgrades
  • Created and managed Group Policy
  • Created user accounts and performed user administration and security
  • Accessed and addressed tickets daily while providing recommended solutions
  • Set up Multi Factor Authentication and implemented login with YubiKeys
  • Ensured all systems complied to security requirements
  • Created comprehensive documentation of policies, processes, procedures to assist new employees
  • Assisted upper management with surveys and artifacts to demonstrate Security compliance
  • Integrated the Linux environment with Active Directory providing a Single Sign On solution (SSO) via Centrify
  • Monitoring Test, Development and Production systems for critical alerts and troubleshooting
  • Configuration and administration of NFS, CIFS and Samba for sharing of resources between Linux/Linux and Linux/Windows environments
  • Patching, kernel and OS upgrades
  • Decommissioning old servers and keeping track of decommissioned and new servers using Inventory list.

Education

Bachelor of Science - Biochemistry, Computer Science & IT

University of BUEA – CAMEROON
2009

Skills

  • Technical and soft skills
  • Operating Systems:
  • Oracle Solaris 10/11, Centos 7/8, RHEL, 7/8/9 Ubuntu 16/18/20, 22,24, Windows server 2012 R2, 2016, 2019, 2022
  • Security and Frameworks: System Hardening, Fortinet Firewall, NIST, PCI
  • Networking: TCP/IP, LAN/WAN, DNS, DHCP, LDAP, HTTPS
  • Automation: Bash Scripting, Ansible, Terraform
  • Data backup management: Veeam Backup and Replication, Dell EMC, AWS Backup
  • Containerization: Docker, ECS, EKS
  • Service Management: NFS, SAMBA, CIFS, NGINX, APACHE/ LAMP
  • Virtualization: VMware EXSI 6/7, Hyper-V, Citrix Xen, KVM
  • AWS Cloud: IAM, S3, EC2, CloudWatch, CloudFormation, ECS, VPC, Route53, CloudFront, Systems Manager, ELB, Auto Scaling, KMS, Guard Duty, Shield, WAF
  • Monitoring and Event Management: Zabbix, Nagios, Splunk, CloudWatch, Datadog
  • PATCHING: Ansible, WSUS, Systems Manager, Redhat Satellite
  • Network management expertise

Certification

  • AWS Solutions Architect Associate
  • AWS Devops Engineer Professional
  • Certificate Training: Linux/Windows/VMware Administration
  • Certified Network Defender

Timeline

Senior Systems/Cloud Administrator

Transcat Inc.
01.2023 - Current

Senior System Administrator/Engineer

Sysmex America – Sysmex Corporation
01.2021 - 12.2023

Linux System Administrator

Acumentrics INC
03.2017 - 01.2021

System Administrator

Atrex Energy
01.2015 - 02.2017

System Administrator

MIT, Massachusetts Institute of Technology
02.2013 - 12.2015

Bachelor of Science - Biochemistry, Computer Science & IT

University of BUEA – CAMEROON

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