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HBase Upwork freelancers typically receive a client rating of 4.61.

Last updated: October 1, 2015

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Ara Sadoyan

Ara Sadoyan Agency Contractor

Linux and Hadoop expert

Armenia - Tests: 5 - Portfolio: 4

I'm Linux administrator and systems architect since 2002. Most of my professional career is with design, setup and devops of medium and high loaded web farms, NoSQL databases which are time critical and require 24/7/365 uptime. During last several years I'm concentrated on architect & administration of Hadoop ecosystem, NoSQL databases and clustered file systems as Cassandra, Riak, Ceph, ElasticSearch, GlusterFS. I have big experience with variety of web servers and load balancers (Apache, Nginx, HAProxy, Tomcat, Jetty etc .. ) as well as with cloud services such as AWS, Rackspace Cloud and GCE.

Associated with: NetAngelS

100% Job Success
$33.33 /hr
3,522 hours

Biswajyoti Kar

Biswajyoti Kar

Big Data Scientist


Two decades of experience in Requirements Analysis, scheduling, Architecting, Functional Design, Development, Testing and Implementation. The legacy of experience spans across Big-data start-ups and global companies like Dell, Tektronix, Perot Systems, and Infosys. For the first 12 years I have worked in linux kernel mode development thereafter for the last 10 years I have been working in statistical machine learning using Python / R. My expertise includes Machine Learning, Artificial intelligence, NLP, Big Data Analytics. Experience using Hadoop components such as HDFS, MapReduce, Hive, HBase, Pig, Sqoop, Flume, Ozzie , Spark ,R-hadoop , R , Python, Shell Scripting

$60.00 /hr
0 hours

Roman G.

Roman G.

Big Data Developer | Backend Engineer | PhD

Russia - Tests: 1

I'm a full-stack Big Data developer with years of experience in data mining, machine learning and Scala/Java/C++ backend development. Main areas of expertise are: - Big Data: Hadoop, MapReduce, Spark (3+ years of experience) - VLDB: HBase, Cassandra (2+ years of experience) - Data mining: Rapidminer, Weka, R; classification, forecasting, search, scoring (3+ years) - Software development: - C++: Qt, stl, boost (4+ years), - Scala: Akka, Spray, Slick, Scalatest, SBT (2+ years), - Java: HPC, multithreading, GC tuning (2+ years), - Devops: Puppet, Ansible, Zabbix, AWS/Azure cluster deployments (2+ years), - Web: Ruby-on-Rails, Play2, Django. I am looking for tasks where I can use my skills to benefit my client and to explore new knowledge. - PhD in Computer Science from leading national university (VSU FKN). - Linkedin:

$40.00 /hr
0 hours

Ravi Padmaraj

Ravi Padmaraj

Hadoop developer with exp in hadoop,web technologies

India - Tests: 2

* I am an hadoop developer with expereince in core java,hadoop, web frameworks, machine learning etc.I have a rich programming experience as well as financial analysis expertise. * Skilled in all hadoop ecosystem components:Mapreduce,Hbase,Hive,Pig,Spark,HCatalog * Skilled in web technologies :Spring,Struts,Servlets,JSP,EXTJS,Java Script,CSS * Expertise in retail,telecom and consumer electronics domain. * Expertise in building data analysis modules in all the above mentioned domains.Experience in R language. * Expertise in machine learning algorithms and frameworks like apache mahout. * Expertise in No SQL databases.(MongoDB,Cassandra,Neo4J,Titan) * Expertise in financial statement analysis and company research. * Certifications: Cloudera certified Developer Cloudera certified in Hbase Cloudera certified Admin IBM Big insights certified Big Data University Certifications

100% Job Success
$7.78 /hr
229 hours

Dmytro Pryimak

Dmytro Pryimak

Software Engineer


I am young and enthusiastic software engineer with 2+ years of experience in developing production systems. My past and current projects included: - Big enterprise system based on Java EE stack(HIbernate + EJB + JSF/JSP), Worked on this project for 4 months mostly at the back-end. - POC for migrating enterprise solution to Hadoop technology stack(Java MapReduce + Apache Pig + Apache Hive + Apache HBase + Apache Oozie). Worked at this project for 7 months and still am working there at this moment. In the scope of the project worked with all the tecnology mentioned above and also installed and configured hadoop cluster on the cloud environment. - Hadoop-based system for processing Healthcare (HL7) data (Spark + HBase + Java MapReduce + Hive). I am ready for new intersting chalanges and projects.

$30.00 /hr
0 hours

Vishal A.

Vishal A.

Hadoop, Spark & Cassandra Developer

India - Tests: 3 - Portfolio: 3

4+ years of Experience in Big Data domain with tools like Hadoop (CDH ), Spark and other open source tools/technologies in Healthcare, Benefits and Ecommerce. Excellent Java development skills using Core Java, Servlets, JSP , JDBC, Java Beans. Substantial experience in writing Apache Spark jobs in Scala and MapReduce jobs in Java, Sqoop, Flume, Zookeeper, HBase and Hive . Hands on experience in installing, configuring and using ecosystem components like Hadoop MapReduce, HDFS, Hbase , Zookeeper, Oozie, Hive, Sqoop, Flume. Extensive experience in SQL and NoSQL development. Experience in data analytics using Apache Spark in Scala. Knowledge of Apache Spark SQL and Spark Streaming. Understanding of Big Data Concepts and Hadoop related technologies i.e. Hive,Sqoop, Flume, Hbase, ZooKeeper, Yarn, MapReduce, Apache Spark Extensive Object Oriented Development OOP/OOD experience. Experience encompasses software design, development and maintenance of custom application software. Strong database connectivity skills with MySQL, Access. Worked on Distributed/Cloud Computing using (Apache Spark,MapReduce,Hbase, Yarn,,Zookeeper, etc.) Working in implementing Hadoop with the AWS EC2 system using a few instances in gathering and analyzing data log files. Working on data using Sqoop from HDFS to Relational Database Systems and vice-versa. Working on Hive/Hbase vs RDBMS, imported data to Hive, partitions, indexes, views, queries and reports for BI data analysis. Developing data pipeline using Flume, Sqoop, Pig and Java map reduce to ingest customer behavioral data and benefits histories into HDFS for analysis. Worked on RDDs and aggregate functions applied on them to get the required results. Working as a Implementation Analyst for configuring the benefits and events based on the BRD documents and processing them Web Development: Involved in various phases of Software Development Life Cycle (SDLC) as requirement gathering, data modeling, analysis, architecture design and development of project. Designed UI using JSP and HTML and validated with JavaScript for providing the user interface and communication between client and server. Worked on XML schema and SOAP message. Developed business logic activities by developing business service classes. Involved in web development using RoR technologies. Worked on different gems for authentication, building role base systems. Worked on Integration with other api and consuming their apis e.g. Twitter , LinkedIn, Facebook and Instagram Worked on integrating different payment system with the web applications e.g. PayPal, Authorize.ent, Heartland , Braintree etc. Experienced in deploying the Rails web app to VPS server e.g. Linode, Digital Ocean, Amazon EC2 , Rackspace etc with the apache passenger and ngnix server. Worked on writing the deployment scripts and cron schedulers. Worked on Redis and elastic search .

80% Job Success
$15.00 /hr
688 hours

Roman P.

Roman P.

Big Data Software Engineer

Poland - Tests: 4 - Portfolio: 2

======= Over 3000 hours spent on Big Data projects on Upwork! ======= Over the last 6 years, I have worked in different projects, many requiring not only software craftsmanship (OOP design, agile development, TDD) but also a mindset typically needed in research. I love solving problems that require POC type of work and experimenting. I am an advocate of open source solutions, and prefer to work in places that have a startup culture. My competencies lie mainly in software development (Java, Python). Areas of interest: - Big Data and NoSQL technologies (Hadoop, Hive, PIG, Storm, Cassandra, MongoDB, HBase, others), - search (Solr, ElasticSearch) - AI (soft and hard computing techniques), - dynamic programming languages I am always looking for opportunities to expand my toolkit and take part in projects that present a challenge.

100% Job Success
$66.67 /hr
3,096 hours