SME Linux Administrator

Ring0 (Ring Zero) Technologies is seeking a SE Linux Based MLS Linux Administrator SME for our enterprise MLS configuration team which includes our Centralized SuperComputing Facility (CSCF) High Performance Computing and other contracts. You will be an active member of the Enterprise MLS team working many and varied Red Hat Enterprise Linux (RHEL) SE Linux based configuration, policy, and development projects including full automation of configuration deployments., Develops, configures, and maintains integrated Red Hat Enterprise Linux/SE Linux Mandatory Access Control (MAC) configurations across multiple systems, networks, and NAS storage based on current LM configuration approach Work closely with the Dev/Sec/Ops automation development team to deploy RHEL SE Linux MLS configurations based on site specific input files Work closely with the security team to ensure RMF, RTB, and other security controls are met and fully documented Manage impacts to system HPC performance ensuring minimal impacts Apply best practices in software engineering, delivering projects on time and with excellent quality Provide support to staff and end users to resolve issues in deployed configurations Modify existing software to correct errors and/or improve performance Ensure InfiniBand high speed fabrics operate correctly with MAC labeling Ensure MLS networking meets controls requirement

Do you have experience in Technical user customer support?, Do you have a Bachelor’s degree?, Bachelor’s degree in Computer Science or an AIS degree required plus 10 years of experience A minimum of 5 years of experience developing system software in heterogeneous, multi-platform environments Proficiency with all aspects of SE Linux configuration, policy, MAC labeling, Security contexts, debugging policy issues, MLS FreeIPA, MLS Ethernet interface networking, developing least access policies, etc. Proficiency in Bourne/Bash and Expect scripting Proficiency in debugging issues with the Linux kernel including examining source code, system logs, and using tools such a crash and systemtap. Experience with managing Satellite repositories to apply patches and build custom kernels as required to implement functionality or address security concerns Familiarity with automating approaches to configuring and maintaining (e.g. patching) systems using Ansible and Satellite Server Understanding and experience working with identity management systems including LDAP and token-based authentication systems Excellent written and oral communication and people skills; excellent time management and organizational skills Demonstrated ability to analyze, debug and maintain the integrity of an existing scripting base Demonstrated organization skills to balance and prioritize work, and ability to multitask Demonstrated communication skills to communicate with support personnel, customer, and managers , Desired Skills

Familiarity with High Performance Computing (HPC) environment and related technologies Familiarity with Infiniband or Omni-Path high speed fabrics, including subnet management, IPoIB and/or IPoOPA mechanisms, fabric topology and health monitoring and integration with MPI Experience with Lustre, NFS, and other direct attach file systems Experience with Ethernet networking Experience with RDMA communications (InfiniBand and OmniPath) Knowledge of Python, Perl, Korn, and other shell scripting Experience with revision control software (CVS, SVN, Git)

Pulled from the full job description

• Flextime
• Referral program
• Tuition reimbursement
• AD&D insurance
• 401(k)
• Health insurance
• Paid time off, RingØ offers our employees and their families the Highest-Level Anthem Blue Cross Blue Shield packages…including the Gold & Platinum Plans. Our health care Preferred Provider Organization (PPO) is a National Leader of Innovative Health Care Offerings DENTAL RingØ offers high quality Individual and Family Dental Insurance (Delta Dental) VISION RingØ offers both individual and Family Vision (VSP) insurance LIFE & DISABILITY INSURANCE RingØ pays 100% of the premiums for Short and Long-Term Disability Insurance, Group Life Insurance, and Accidental Death & Dismemberment (AD&D) Insurance for all of our employees SAVINGS PLANS (401k/ROTH IRA) Our 401(k) plan has no vesting requirements. The 401(k) Plan includes the max allowable non-taxable employer matching contribution and a wide variety of investment options These distributions are paid out on a PER-PAYROLL basis, so our employees realize maximum compounded interest for their retirement savings plan. PAID TIME OFF (PTO) Family and work-life balance is extremely important to us. Therefore, our time-off plan includes Paid Time Off/Vacation, Flex Time, and Floating/Banked Holidays! TUITION ASSISTANCE We highly encourage and support our employees to pursue advanced degrees through our tuition reimbursement program to further their professional careers. Therefore, RingØ offers the max allowable non-taxable employer contribution for tuition assistance EMPLOYEE TRAINING Personal and professional improvement is critical to our employee’s career growth and support to our Sponsors’ missions. We fully support our employees attending training and technical conferences EMPLOYEE REFERRALS Employees and non-employees are eligible for referral bonuses

RingØ Technologies (“Ring Zero”) was founded in 2010 as a veteran-owned, U.S.-based company. Our leadership team brings over 20 years of expertise in Computer Crime Investigations, Computer Network Operations, Incident Response, and Cybersecurity Defense. Before establishing RingØ Technologies, our founders spent a decade building a high-impact business unit from the ground up, growing it to nearly 400 professionals who supported the U.S. Government’s cyber needs both domestically and internationally. At RingØ Technologies, we are dedicated to recruiting top-tier talent to address mission-critical challenges across the Department of Defense, Intelligence Community, and Federal Law Enforcement. We are deeply committed to ensuring our team stays at the forefront of emerging technologies while fostering continuous career growth. Additionally, we prioritize delivering exceptional Program Managers who are experienced, impartial, and transparent, ensuring they provide accurate financial oversight and the highest value for our Government partners. We hold ourselves and our industry collaborators to the same standard of excellence, working together to deliver unparalleled results for the Government.