Candidates About

Jason Jafarian

SUMMARY: 

• 7+ years of intensive experience in development environments within cross-platform systems
• Extensive experience implementing and maintaining Open-Source Distributed System, Big Data and Search Engine solutions
• Diverse experience includes developing reporting and procedural standards
• Experienced working with HL7 and NHIN in Healthcare industry
• Diagnosing and resolving complex technical problems in cross-platform systems
• Engineering and management as well as performance monitoring and capacity planning on distributed systems
• Extensive knowledge of Software Development Life Cycle (SDLC)
• Strong technical knowledge in RDBMS, NOSQL and Object Oriented Designed and implemented system 

EDUCATION:

MBA from Johns Hopkins University, Washington DC   2013      

TECHNICAL SKILLS:

Languages: Bash/Shell Scripting, SQL, Java, JSON, CSS, XML/XSLT, XPath, XQuery

Platform: UNIX, Linux, Windows, VMware, VirtualBox, Hyper-V

Database & Data warehousing Tools: MS SQL, MySQL, Hbase, Postgres, Redshift

Distributed System: Apache Hadoop Ecosystem, Hadoop HDFS, YARN, HBase, ZooKeeper, Pig, Hive, Scoop, Flume, Spark, Falcon, Ambari, Apache Solr/Lucene (SolrCloud), Splunk,

IT infrastructure frameworks & monitoring: Cloudera Manager, Cloud AWS infrastructure (EMR, EC2, S3), Lucidworks Fusion, Hortonworks HDP & HDF, Cloudera Distribution for Hadoop (CDH4, CDH3), Nagios, Kibana/Banana, Ambari

Web & Application Servers: Apache web Server, Jetty, Tomcat, Jboss

Networking: TCP/IP, DNS, LAN/WAN, NAT, LDAP/AD

Analysis/Design Methodologies: Scrum Agile, UML, REST, J2EE

Others: MS Visio, Subversion, Selenium, Puppet, Kerberos, Knox, Ranger

EXPERIENCES:

Department of Justice (DOJ), Washington DC Nov 2017- Feb 2018

Sr. Big Data Infrastructure Engineer

·         Designed, installed and configured HDP 2.6.3 clusters include: Hadoop, YARN,  HDFS , Zookeeper, Solr, Oozie, Flume, Hive, HBase, Kafka, Spark 

·         Setup and configured Ambari 2.6 for provisioning and monitoring

·         Setup external solrcloud 7.1 cluster on Ambari and configured backup and recovery

·         Setup firewallD in Redhat 7

·         Setup Nagios for monitoring 27 Hadoop clusters with over 217 hosts, virtual machine and bare metal Redhat Linux 6 and 7 servers

·         Setup and configured Puppet for automation

·         Knowledge transfer with team members

General Services Administration (GSA), VA Sep 2015-Current

Sr. Software Engineer

·         Designed, Provisioned, maintained and upgraded Search Application Lucidworks Fusion (SolrCloud) in AWS GovCloud, Redhat Linux servers

·         Setup and configured monitoring tools, New Relic and Zabbix

·         Provided data management and indexing solutions for governmental agencies

·         Leveraged daily Scrum/Agile meetings to communicate and clarify issues and solutions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

·         Took lead on migration of the application from GovCloud to a new AWS environment

·         Designed, installed and configured HDP-Hadoop cluster in AWS on Linux hosts

·         Leveraged Splunk for log aggregation and stacks troubleshooting

Bloomberg, NYC Mar 2015- Sep 2015

Big Data & Solr Engineer

·         Designed and installation of HDP 2.2 cluster includes 20 nodes on RedHat Linux environment

• Setup and configure HDP cluster high availability
• Set up Ambari 2.1 for provisioning, managing and monitoring Hadoop cluster
• Secured Hadoop clusters with Kerberos, LDAP, Ranger and Knox
• Setup and auto-configured Hadoop cluster in Puppet environment
• Installation, configuration, and administration of HDP Stack includes services HBase, Solr, Hive, YARN, Oozie, Flume, Kafka, Spark and HDFS
• Setup and configured Nagios and Ambari to leverage system health check, metrics collection and alert framework
• Setup back-up system and Snapshot data replication for HDFS using Falcon
• Setup and configured SolrCloud Cluster with ensemble ZooKeeper cluster and Kibana/Banana data visualization

Booz Allen Hamilton, MD Sep 2014 - Feb 2015

Software Search Engineer (Enterprise Search Solutions)

·         Designed and initiated a prototype for “FDA-Drug-Labels Indexing Solutions”

• Performed requirement gathering and data analysis
• Set up and configured Solr search engines in “Standalone” and “SolrCloud” modes
• Setup ETL tools, parsers, and transformers (DIH, Tika, XPath) to extract, transfer, and load data to Solr nodes
• Defined customized Solr Schema for indexing different data formats (XML, HTML, PDF, JPEG, metadata …)
• Investigated possibility of integration software, frameworks, and libraries to enhance performance of the system including: “OpenNLP” (Machine learning based toolkit), “Logstash” (loading log files to Solr), “Kibana/Banana”(Data visualization)
• Set up and configured data visualization framework “Kibana/Banana” to visualize time-series and non-time-series data, indexed in Solr nodes
• Reconfigured and customized search engine and performed functional testing (both indexing and searching) for quality assurance

Patent and Trademarks Office (USPTO), VA Mar 2014 - Jul 2014

Solr Search Engineer

·         Set up and configured SolrCloud search solution running on Jboss includes 3 clusters, 9 shards and 9 replicas on Linux servers to process TBs of dataset and provided near real time search

• Configured quorum ZooKeeper running as a central configuration for Solr clusters
• Installed and configured Jboss clusters
• Performed testing and debugging of different search components for high availability and performance enhancement
• Provided comprehensive documentation

TDL Group, Washington DC Feb 2011- Mar 2014

Healthcare Business Analyst & Application Engineer     

·         Setup & installed Solr/Lucene search solution under Tomcat-Jboss environment on Azure Cloud

• Provided replication configuration for Solr/Lucene indexes
• Defined data source connectivity from Solr to MS SQL & S3 on AWS
• Setup & installed SSL connectivity between Solr nodes
• Installed and configured SolrCloud cluster on Unix servers
• Performed requirements analysis
• Daily administration and management of multiple Linux servers
• Installed and configured Hadoop nodes/Cluster on Amazon Web Services
• Automated start-up script for pulling data from MySQL and ingesting into Hadoop Distributed File System (HDFS)
• Wrote shell scripts for Log-Rolling day to day processes
• Executed importing and exporting data into HDFS and Hive using Sqoop
• Executed manipulating and managing data with Hive and Pig
• Managed the day-to-day operations of the cluster for backup and support
• Performed performance monitoring and capacity planning
• Reliability testing to reveal potential problems arising from extended runs
• Solr performance testing to determine the response time of a given request
• Executed expectations and general performance standards as set forth by the company
• Oversaw and directed the quality assurance review of monthly activity reports including validation of results