Sr. Linux & OCI Administrator (Oracle Linux / RHEL)

Mitratech

5d•$120,000 - $125,000•Remote

About The Position

At Mitratech, we are a team of innovators focused on building world-class products that simplify operations in the Legal, Risk, Compliance, and HR functions. We are a close-knit, globally dispersed team that thrives in an ecosystem that supports individual excellence and takes pride in our diverse, inclusive work culture centred on great people practices, learning opportunities, and fun! Our culture is the ideal blend of entrepreneurial spirit and enterprise investment, enabling rapid progress with some of the most complex, leading-edge technologies available. For over 35 years, the experts at Mitratech have been focused on solving the complex needs. Today, we serve 20,000 client companies of all sizes globally, representing 30% of the Fortune 500 and over 500,000 users in over 160 countries. As we continue to grow, we’re always looking for resourceful, enthusiastic, and fresh perspectives. Join our global team and see what makes Mitratech a truly exceptional place to work! Job Overview We are seeking an experienced Sr. Linux & Oracle Cloud Infrastructure (OCI) Administrator to support a production application hosted on OCI. The role focuses on Oracle Linux administration, OCI networking and security, Terraform-based automation, and operational support for SFTP and mail services.

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
IaC & Automation: Deep proficiency with Terraform (modules, workspaces, remote state, testing) and Ansible (roles, collections, idempotency, vault).
Systems Expertise: 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).
Scripting: Proficiency in Bash
Experience with SFTP and SMTP/mail services
Deployment Experience: Comfortable with both modern (immutable, pipelines, containers) and older practices (in‑place upgrades, change windows, maintenance runbooks).
Troubleshooting: Proven ability to diagnose and resolve complex incidents across OS, network, and platform layers.
Documentation & Communication: Clear written/verbal communication; ability to author design docs, runbooks, and RFCs.

Nice To Haves

Certifications: Oracle Linux, OCI Architect Professional/Associate, RHCSA/RHCE (or equivalents), Terraform Associate, Ansible Automation.
Tooling: Packer, GitHub Actions/GitLab CI/Azure DevOps/Jenkins, HashiCorp Vault, OCI Bastion/Cloud Guard, Security Zones.
Containers & Orchestration: Docker, Kubernetes, admission controls, image signing, and runtime policies.
OCI certifications
Experience with monitoring tools and CI/CD pipelines
High availability and disaster recovery experience
Strong troubleshooting skills
Ability to work in production-critical environments
Good communication and documentation skills