High Performance Computing (HPC) Systems Administrator

Sentar is dedicated to developing the critical talent that the connected world demands to create solutions to address the convergence of cybersecurity, intelligence, analytics, and systems engineering. We invite you to join the small business team where you can build, innovate, and secure your career.

Sentar is seeking a High Performance Computing (HPC) Systems Administrator!

Role Description:

We are seeking HPC Systems Administrators to:

• Support a large client-server based IT enterprise in installation, configuration, and networking of Linux and Windows based platforms.
• Oversee servers running Red Hat, CentOS, SolarisX64, SuSe, Virtual Appliances, with direct attached and FC SAN storage.
• Troubleshoot PXE and DHCP boot process
• Perform Microsoft Exchange Policy management, mailbox management, enterprise-leve, multi-site design and architecture
• Support Tier 3 Infrastructure services such as: DNS, NIS, Active Directory, Centrify, Zenoss, SiteScope, HP Openview, HP Oneview, HPSA, HPSE, SPLUNK, Sendmail, Exchange, NetQoS, Infoblox, Nagios, HP Cluster Management
• Install, configure, tune and troubleshoot multi-vendor servers running numerous COTS, open source and in-house applications

Qualifications:

Clearance Level: TS/SCI with Active Poly

Education:

• Bachelor’s Degree in Computer Science or related field and have ten (10) years of demonstrable experience in system administration and support of a large client-server based IT enterprise.
• Or the individual shall have five (5) years of full time computer science work that can be substituted for the Bachelor’s Degree, and have ten (10) years of demonstrable experience in system administration and support of a large client-server based IT enterprise.

Experience:

• An industry recognized professional certification may substitute as one year experience. IAT Level II Certification Required.
• Experience with the following:
  • Servers running Red Hat, CentOS, SolarisX64, SuSe, Virtual Appliances, with direct attached and FC SAN storage
  • Large SPU, memory SMP systems and clusters with many cores
  • Enterprise client server configurations (Group Policy, Centrify, DNS, LDAP
  • Linux Scripting (Bash, Perl etc)
  • Linux Logical Volume Management (LVM)
  • Distributed Filesystems
  • Configuration Management tools
  • Experience troubleshooting PXE and DHCP boot process.
  • Multi-vendor filesystems such as XFS, GPFS, and CXFS, EXT4, CIFS, NFSClustered Blade systems and associated interconnects (iSCSI, SAD, FC, TCP/IP, etc.)
  • Advanced Red Hat/CentOS and Microsoft Windows Operating System (including Group Policy management)
  • Microsoft Exchange policy management, mailbox management, enterprise-level multi-site design and architecture
  • Enterprise Active Directory/Centrify Zone management (creation, update, RBAC)
  • Tier 3 Infrastructure support for services such as DNS, NIS, Active Directory, Centrify, Zenoss, SiteScope, HP Openview, HP Oneview, HPSA, HPSE, SPLUNK, Sendmail, Exchange, NetQoS, Infoblox, Nagios, HP Cluster Management
  • Thin client solutions based on Virtual bridges and Centrix, VPN
  • NoMachine NX Virtual Desktop management
  • Experience with Enterprise Virtualization products; VMWare, vSphere, vCenter, vRealize Automation, vSAN
  • vSwitch, Distributed Switch, Console management
  • OpenShift, Docker, Kubernetes
• Accepted professional certifications include a valid RHCSA or higher Red Hat certification, MCSE
• Installation, configuration, tuning, troubleshooting and administration of:
  • Multi-vendor servers running numerous COTS, opensource, and in-house applications to accommodate HPC Division IT support requirements
  • Multi-vendor servers running Red Hat of SuSe with direct attached, FC SAN storage or SSDs
  • Distributing computing tools such as ReS, LSF, and SLURM
  • HPC farm systems, HPC MPP clustered systems, Front End servers of Special Purpose devices (SPDs)
  • IBM of HP Blade servers with FC/SAS/Network back end
  • Multi-vendor filesystems such as XFS, GPFS and Lustre
  • Pre-Factory testing, Factory testing, System integration and Acceptance testing during the purchase process of the HPS systems

Benefits at Sentar:

In addition to a great culture, Sentar not only fosters an inclusive work environment but also offers an extensive benefits package designed to cater to the well-being of its employees and their families.

• Voluntary Medical, Dental, Vision, with Health Savings or Flexible Spending Plan options
• Voluntary Life, Critical Illness, Accident, and Long Term Care insurance options
• Group Term Life, Short-Term and Long-Term Disability is provided by Sentar to all qualifying employees
• Generous 401(k) match
• Competitive PTO plan that graduates quickly with years of service
• Other leave programs; holiday schedule along with bereavement, jury and military duty
• Mental health awareness programs
• Tuition reimbursement
• Professional development reimbursement
• Recognition and Awards programs

If you are not ready to apply for this position, submit your resume here to join our talent community . We'll keep you updated occasionally on new job opportunities.

Sentar is an Affirmative Action and Equal Opportunity Employer M/F/Vets/Persons with Disabilities

Our culture is one of inclusivity and support. Sentar is proudly an Equal Opportunity and VEVRAA Federal Contractor Employer M/F/Vets/Persons with Disabilities. Follow these links to learn more about your rights: EEO Is the Law Poster ; EEO Is Law Supplement ; and Pay Transparency .

We want you to build your career at Sentar, so if you are an individual with a disability and require a reasonable workplace accommodation applying for a job or at any point in the employment process, contact the Recruiting Manager at recruiting@sentar.com . Please indicate the specifics of the assistance needed. Thank you for considering Sentar in your employment search.

Build, Innovate, Secure Your Career at Sentar.