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Senior Level System Architect and Engineer with extensive knowledge of available Open Source technologies and the ability to integrate them into working systemsSkilled in the automation of system deployment, management, and monitoring processes. Extensive work with HPC clusters using Slurm, LSF, and Hadoop. Experienced in storage options for clusters including NFS, GPFS/Spectrum Scale, iSCSI, Gluster, HDFS, and BeeGFS.Provide support for engineers and traders in an environment requiring innovative solutions and the ability to respond quickly to changing requirements. Configure and support use of SSH, GPG, SSL, and TLS for users and serversEvaluated and deployed a Spacewalk management and provisioning server to build and maintain 100+ CentOS systems.Evaluated and deployed a 70 node, 140 CPU compute cluster using LSF.Introduced new technologies into environment such as:Data center inventory management (Racktables)System monitoring (Centreon, Icinga, Nagios, Monit, Munin, Ganglia, ELKS)HPC systems (Slurm, Hadoop)Build management (Foreman/Katello, Spacewalk, Cobbler)Configuration management (Puppet, Ansible)Containers (Singularity, PodMan, Docker)Directory services (AD integration, LDAP, Kerberos)Installed and managed a Jabber IM server, a Cactus network monitoring server, a Nagios system monitoring server, phpMyAdmin and phpPgAdmin database managements systems, a video sharing server using PhpMotion, and a CFEngine configuration management server.Built custom RPM packages, including kernels.Deployed and support departmental web server using Apache, MySQL, and TWiki.Deployed custom private networks for experimental testing including VPNs and complex routing configurations.Past positions have included work as an RF IC designer and RF circuit designer.Specialties: Experienced in the use and deployment of Linux (RedHat, CentOS, Fedora, Ubuntu), Compute Clusters (Platform LSF and GridEngine), Virtualization (Xen, KVM and VMWare), Spacewalk and RH Satelite, Networking (Cisco, Juniper), Perl, Python.Also experienced in the use and deployment of Apache Web server, MySQL, PostgreSQL, Oracle, Linux Firewalls (IPTables), NIS, NFS, DNS, LDAP, Samba, Matlab, Drupal, PHP, C, C++, Java, JavaEE (JBoss, Glassfish), Hadoop, Cadence, Synopsis, and Agilent CAD tools.
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System EngineerImc Trading Jan 2020 - PresentAmsterdam, Noord Holland, Nl -
Senior Linux AdminXr Trading Jun 2010 - Nov 2019Chicago, Il, UsLinux system support, infrastructure development, Active Directory integration, performance tuning, version control systems, low latency networking, shell scripting, automated build systems, system monitoring, and trouble shooting. -
EngineerMotorola Jul 1987 - Jun 2010Chicago, Illinois, UsJune 1999 - present Linux OS support, CAD Tool support. * Implemented build process to automate the Linux OS build process. * Built and manage Linux clusters using Red Hat Linux and Platform LSF. * Implemented configuration management system to keep 200+ systems in sync and up to date.* Support research projects with custom systems.* Built and supported Xen and KVM virtual servers.* Provide support for users of CAD tools.* Networking support.Feb 1995 - May 1999 Member of the iDEN IC design team. Designed and simulated mixers used in the LO phasing and frequency generation circuits. Worked on chip level verification of block wiring. Wrote Perl scripts to automate complex simulation tasks.Jan 1990 - Jan 1995 Built and tested prototype transmitters for the iDEN product. Worked with product engineers in Illinois, Florida, Japan, and Israel to get the iDEN IC chipset working in products. Wrote DSP5600 assembly code. July 1987 - Dec 1989 Designed RF power amplifiers for the VHF and 800 MHz MSF5000 line of base station transmitters. -
Research AssistantUniversity Of Illinois At Urbana-Champaign Aug 1985 - May 1987Champaign, Il, UsResearch assistant to P. D. Coleman, Electro-Physics lab. Studying microwave models of Resonant-tunneling diodes. -
Summer InternLake County Division Of Transportation Jun 1982 - Aug 1985Fortran programming of traffic simulations, intersection design, and street sign layout.Surveyors assistant.
David Crim Skills
David Crim Education Details
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University Of Illinois Urbana-ChampaignElectrical Engineering -
University Of Illinois Urbana-ChampaignElectrical Engineering
Frequently Asked Questions about David Crim
What company does David Crim work for?
David Crim works for Imc Trading
What is David Crim's role at the current company?
David Crim's current role is System Engineer at IMC Trading.
What is David Crim's email address?
David Crim's email address is da****@****ing.com
What is David Crim's direct phone number?
David Crim's direct phone number is +131224*****
What schools did David Crim attend?
David Crim attended University Of Illinois Urbana-Champaign, University Of Illinois Urbana-Champaign.
What skills is David Crim known for?
David Crim has skills like Perl, Linux, Red Hat Linux, Python, C++, Java, Unix, Cisco Technologies, Centos, Nagios, Cluster, Debian.
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