This Is Martin Zeller from Agile Enterprise Solutions,
This is Reference for Following Position
***** Please reply *with Resume, Work Authorization , Rate & Contact
Details* ASAP *****
*Job Title: * *Sr. Systems Administrator*
*Location:* Atlanta, GA
*Duration:* 6+ Months
*Interview Type: * Phone+ Skype
*Primary Skills: Apache HBase, Apache Cassandra, Apache
EC2, S3, Global Load-balancing, Object-Storage (OpenStack Swift, GlusterFS)*
v The candidate for Senior Systems Administrator will be expected to have
a broad knowledge of server applications running in a distributed Linux
v The Senior Systems Administrator will support installation,
configuration, tuning, load testing, product evaluation and deployment of
server applications in our labs and our production environments.
v The Senior Systems Administrator will be expected to rapidly become
familiar with new third party applications.
v The Senior Systems Administrator will install and configure software
packages on servers in support of the development, testing and delivery
v The Senior Systems Administrator will deploy custom-built software
packages to environments such as QA, Integration and Production.
v Extensive troubleshooting experience is required. The SSA will be part
of the Tier 4 support team for the product.
v Knowledge of the following is a must: Apache Web Server, Linux OS, J2EE
Platforms such as Weblogic, JBOSS, Tomcat or WebSphere.
v Familiarity with Oracle and building Open Source applications (such as
Apache) will be required.
v The following are a plus: Familiarity with NoSQL databases, Virtual
Machines (such as VMWare or KVM), cloud services, Agile development.
v Also RabbitMQ, Riak and knowledge of automation and monitoring software
such as Chef or Puppet and Nagios.
v Knowledge and experience installing, deploying OpenStack, Eucalyptus or
other open source cloud computing platforms.
v *Experience with installing, deploying Object-Storage platforms
(OpenStack Swift, GlusterFS). *
v *Experience with Amazon EC2, S3, Global Load-balancing. *
v Knowledge of network related aspects; such as VPN, VLAN, NATing, IP
Addressing, Bridge networking, load-balancing, routing and securing
perimeter with IP Firewall/Masquerading.
v Knowledge and experience deploying with storage related technologies;
SAN, NAS, File System.
v Working experience with Chef, Puppet and/or other system automation
v Knowledge of dynamic languages used for system programming, Ruby,
v Ability to research, prototype rapidly, test, verify new Cloud platforms
and how it relates to application enablers.
v Understanding of security technologies, RSA encryption, SSH Keypair,
HTTPS, SSL, OpenSSL
v Experience installing and deploying java based application or web
servers; Tomcat, Weblogic, JBoss.
v Experience with installing/deploying monitoring tools, such as Nagios,
v Experience installing, deploying with Linux OS’s (preferably Ubuntu,
CentOS and Redhat)
v Experience working with software based load-balancing and web server
technologies, such as Nginx, HaProxy, Apache.
v *Past experience as sysadmin required.*
v *Experience using Apache HBase*
v *Experience using Apache Cassandra*
v *Experience using Apache Hadoop*
v General – HBase/Cassandra Architecture, Installing on Cloud Providers,
Upgrading, Configuring Replication, Installing RHEL/ Linux Tarball Package
v Administrator - Security Management, Monitoring and Tuning, Deploying
Data Centers, Configuring Hadoop/Casandra, Configuring, Migrating from
other Databases, Backing Up and Restoring Data, Data Partitioning,
Replication, Planning a Cassandra Cluster Deployment, Initializing,
Managing a Cassandra Cluster, Configuration
v Developer - Data Modeling, Managing Data, Querying Cassandra.
v Hbase/Cassandra Configuration - Standalone and Distributed, Big Cluster
Configurations, , HDFS Configurations, Configuration for large memory
machines, Compression, Bigger Regions, Managed Splitting, Managed
Compactions, Speculative Execution, Balancer,
v Upgradation - Upgrades, Migration, Replication, Distributed splitting,
v Data Models - Conceptual View, Physical View, Data Model Operations,
Sort Order, Column Metadata, Joins, ACID
v Hbase/Casandara and Schema Design - Schema Creation/ Updates, Rowkey
Design, Timeseries Data, ColumnFamilies, Region Splits, Supported Datatypes
and Counters, Secondary Indexes and Alternate Query Paths, Filter Query,
Periodic-Update Secondary Index, Dual-Write Secondary Index, Summary
Tables, Coprocessor Secondary Index, Constraints, Operational and
Performance Configuration Options
v Hbase/Cassandra and MapReduce - Map-Task Spitting, MapReduce Splitter,
v Architecture - Catalog Tables, Client, Client Request Filters, Master,
RegionServer, Regions, Bulk Loading, HDFS
v Performance Tuning - Java/ GC, Hbase/Cassandra Configurations, Schema
Design, Hbase/Cassandra General Patterns, HDFS
v Troubleshooting/ Debugging Hbase/Cassandra - Logs, Tools, MapReduce,
NameNode, version issues
v Operational Management - Hbase/Cassandra Tools and Utilities, Region
Management, Node Management, Metrics, Monitoring, Cluster Replication,
Backup, Capacity Planning
Thanks & Regards
Agile Enterprise Solutions, Inc
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