Specialist, Linux Administration

| Chicago

Summary:

Under supervision, perform activities and team leadership required to support a large, complex Linux based computing environment and an increasing transition to Linux infrastructure in AWS. Assist in driving “infrastructure as code” mentality throughout the organization and demonstrate a passion for automation concepts and tools. Utilize customer service skills while acting as a technical resource to internal departments and system users. Use technical skills to proactively put scripts and documentation in place to comply with current standards.

Primary Duties and Responsibilities:

  • Provide advanced system administration, operational support and problem resolution for a large complex Linux computing environment, including both virtualized and physical servers
  • Create and Patch AMIs, perform pull requests, write Automation code
  • Perform Linux administration including changes, deletes, disk space management, application installation, and backup
  • Use your infrastructure and networking knowledge to maintain cloud based infrastructure predominantly on AWS involving EC2, S3, RDS & VPC
  • Use configuration management tools (primarily Ansible and Terraform) to build and maintain a hybrid infrastructure hosted both at colocation facilities and in the public cloud.
  • Work directly with the development team to build supporting infrastructure for specific new application functionality.
  • Run proof of concept projects on early stage infrastructure improvements to validate the feasibility of an approach, evaluate performance, and spike an implementation.
  • Review and evaluate virtual and physical server performance and capacity
  • Forecast system demands and recommends upgrades, expansions and reconfigurations
  • Perform automated computing environment builds, site setup, user training, hardware/software installation, maintenance and support and documentation of operating procedures and processes
  • Support VMware environment including changes, adding/removing systems, and disk space management.
  • Troubleshoot hardware and software problems, takes appropriate corrective action and/or interact with IT staff or vendors in performing complex testing, support, server recovery, and troubleshooting functions.
  • Assist with development and testing of changes needed to maintain DR environment
  • Use change management process
  • Comply with all audit, compliance, and regulatory requirements
  • Attend meetings as a team representative
  • Support on call, weekend and off hours work as needed
  • Perform other duties as assigned

Qualifications:

  • Good consultative, communication, analytical, and judgment skills
  • Ability to work effectively with clients, technical staff, consultants and vendors
  • Ability to work well under pressure and within deadlines
  • Experience with disaster recovery testing and creating technical documentation
  • Ability to communicate well and perform as part of a team located in multiple cities

Technical Skills:

  • Extensive knowledge of Linux operating systems, Linux shells and standard utilities, and common Linux security tools
  • In depth system administration knowledge and skills for RedHat Linux. Knowledge of Amazon LINUX is a plus.
  • Experience with using Github or other version control tools for source code management
  • Experience using configuration management tools such as Puppet, Chef, or Ansible and container tools such as Docker
  • Ability to write and maintain automation code and scripts and IaaS / Infrastructure as code, such as Terraform
  • Familiarity with DevOps activities and using CICD pipeline software to deploy code
  • Working knowledge of cloud components and services in AWS or Azure.
  • System administration experience and knowledge of VMware and administration of virtual servers
  • Grub, PXE boot, Kickstart
  • Yum, rpms, Satellite server
  • SVM, LVM, Boot from SAN, UFS/ZFS, filesystem configuration
  • General working knowledge of NAS, SAN, and networking
  • Experience with Github, Ansible, Jenkins and Terraform tools/applications
  • Knowledge or experience with DevOps, OpenShift, AWS cloud, or other similar technologies is desirable

Education and/or Experience:

  • Bachelor’s degree in Computer Science or a related discipline or an equivalent combination of education and work experience.
  • Three or more years’ experience in Linux systems installation, operations, administration, and maintenance of physical and virtualized servers

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Location

Adjacent to the Willis Tower, close to CTA, Metra and expressways with plenty of food and entertainment options nearby.

An Insider's view of OCC

What are some social events your company does?

Monthly happy hours, summer and winter outings and cultural celebrations to honor our diverse workforce.

Yemi

Principal, Diversity and Inclusion

What are OCC Perks + Benefits

OCC Benefits Overview

Educational Assistance and Student Debt Forgiveness, 12-week paid parental leave, technology stipend up to $2,000, mobile data reimbursement of $35 per month. Open offices, online health coaching.

Culture
Volunteer in local community
Each year, OCC employees select a locally-based charitable organization for each of our three offices (Chicago, Dallas and Washington, D.C.). We offer multiple opportunities to get involved.
Friends outside of work
Daily stand up
Open door policy
Team owned deliverables
Team based strategic planning
Open office floor plan
Diversity
Dedicated Diversity/Inclusion Staff
Someone's primary function is managing the company’s diversity and inclusion initiatives
Health Insurance & Wellness Benefits
Flexible Spending Account (FSA)
Disability Insurance
Dental Benefits
Vision Benefits
Health Insurance Benefits
Life Insurance
Wellness Programs
Retirement & Stock Options Benefits
401(K)
401(K) Matching
OCC provides employees with a 401(k) matching plan managed by Fidelity. We match 50% of contributions up to 6% of an employee's annual gross pay.
Performance Bonus
Match charitable contributions
Child Care & Parental Leave Benefits
Flexible Work Schedule
OCC provides employees with a flexible work schedule that includes Flexible start and end times.
Vacation & Time Off Benefits
Generous PTO
OCC employees receive between 22 and 32 days per year of paid time off based on years of service.
Paid Volunteer Time
Sabbatical
Eligible employees get 30 days of paid sabbatical after their first 10 years of working at the company.
Paid Holidays
Perks & Discounts
Commuter Benefits
OCC Offers pre-tax commuter benefits for employees in Chicago and Washington, D.C.
Happy Hours
Relocation Assistance
OCC offers relocation assistance which varies based on the position level and location.
Professional Development Benefits
Job Training & Conferences
OCC offers employees professional development opportunities including onsite training courses and the ability to attend job related certification courses, conferences and seminars.
Tuition Reimbursement
Our tuition reimbursement plan offers an annual max of $1000.
Lunch and learns
OCC hosts leadership lunches on a regular basis so you can learn about your colleagues and their unique backgrounds.
Cross functional training encouraged
Promote from within
Online course subscriptions available
Customized development tracks
Paid industry certifications
Employees are strongly encouraged to stay current in relevant technologies and supports certification programs.
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