Mitratech

Empower. Automate. Elevate

Senior Linux, OCI Administrator

Full-stack EngineerSoftware EngineerFull TimeRemoteTeam 1,001-5,000H1B SponsorCompany SiteLinkedIn

Location

United States

Posted

32 days ago

Salary

$120K - $125K / year

7 yrs expEnglishAnsibleDNSFirewallsLinuxNFSOracleSMTPTcp/ipTerraformVault

Job Description

• Administer and support Oracle Linux systems (patching, tuning, troubleshooting) • Manage OCI resources: compute, VCNs, subnets, routing, load balancers • Configure and maintain OCI security (IAM, NSGs, security lists, compartments) • Design and troubleshoot OCI networking and connectivity issues • Provision and manage infrastructure using Terraform (IaC) • Support SFTP and mail services (secure access, monitoring, troubleshooting) • Perform system monitoring, backup coordination, and DR support • Participate in production support, incidents, and on-call rotations • Maintain operational documentation and runbooks

Job Requirements

  • 7+ years professional experience administering Linux in production (preferably Oracle Linux or closely related RHEL).
  • Strong Hands-on experience with OCI administration (compute, networking, IAM, security)
  • Experience supporting Oracle WebLogic Server
  • Working knowledge of Oracle Database environments
  • Deep proficiency with Terraform (modules, workspaces, remote state, testing) and Ansible (roles, collections, idempotency, vault).
  • Kernel, systemd, SELinux/AppArmor, LVM/filesystems (xfs/ext4/btrfs), iSCSI/NFS, SSH/hardening.
  • Package and patch management (yum/dnf, repo mirrors, Ksplice), vulnerability management, and baseline hardening (CIS/STIG).
  • Solid understanding of Networking Fundamentals: TCP/IP, routing, DNS, DHCP, load balancing, proxies, firewalls/security groups, PKI/certificates (TLS).
  • Proficiency in Bash
  • Experience with SFTP and SMTP/mail services
  • Comfortable with both modern (immutable, pipelines, containers) and older practices (in‑place upgrades, change windows, maintenance runbooks).
  • Proven ability to diagnose and resolve complex incidents across OS, network, and platform layers.
  • Clear written/verbal communication; ability to author design docs, runbooks, and RFCs.

Benefits

  • Health, Dental & Vision Insurance
  • 401 (k) + Employer Match
  • Unlimited PTO + 11 Paid Holidays + 4 Annual Paid Global Wellness Days Off
  • STD, LTD & Group Life Insurance
  • Paid Parental Leave
  • Pet Insurance
  • FSA & HSA Options
  • Employee Assistance Program
  • Remote Work
  • Career Advancement & Professional Development Opportunities
  • Employee Recognition
  • LinkedIn Learning Platform

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