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Hadoop Upwork freelancers typically receive a client rating of 4.78.

Last updated: October 1, 2015

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Data Engineer - DW/BI & Big Data Hadoop, Spark, NoSQL

United Kingdom - Portfolio: 4

Holds Engineering degree in Computer Science and experienced in building Enterprise DW/BI and Big data application. Experienced in migrating traditional Data Warehouse application to Big data Lambda architecture. I have operated in Great Britain (London) area working for Tier 1 business organisations in building enterprise DW and Big data applications. Trained in Big Data eco systems (Hadoop, Map Reduce, Pig, HiveQL, HBase, Spark - Shark). Implementation of Big data Lambda architecture in a multi node clusters in Hadoop 2.0 Having hands on experience in major RDBMS like MySQL, Oracle, PostgreSQL, SQL Server and NoSQL - MongoDB with document Query Language. Specialties: • DW/BI and OLAP Data modelling (Star, Snowflake schema, Normalisation, ) • ETL data Integration through Pentaho Data Integrator (KETTLE, SPOON) and Python ETL, Oracle SQL Loader, Oracle Data Pump. • Advanced PostgreSQL and PLPgsql/ PL/SQL programming (Functions, Packages, Collections, Partitioning, Hierarchical queries, Bulk Binding, Inlining, Indexing, Dynamic SQL, Analytical function, Data Mining API, Performance tuning, SQL factory, pipelined function Explain Plan, Trace O/P etc.) • Java, Collections - List, Tree, Hash Map, Set etc., Generics, Fork - Join. • Data visualization, Dashboard Creation, Customer Scorecard and KPI Modelling • Reporting - Tableau Data visualization. Analytical report, Operational Report, Subjective and Statistical Analysis on customers, data, Multi-variate analysis, clustering, K-means, Hypothesis Testing. • BIG Data eco system : o Data Mgmt : Hadoop & YARN o Data Access: Java Map Reduce, Pig, Hive, Solr, Spark, HBase, Storm. o Governance & Integration: Sqoop, Flume, Kafka o Operations: Oozie, Zookeeper o Libraries: Spark SQL, Spark mlib. o NoSQL: Mongo DB, HBase • Functional Programming using Scala and implementation of Spark streaming.

$22.22 /hr
0 hours

Praphulla Rayala

Praphulla Rayala

Web Developer & Administrator

India - Tests: 6 - Portfolio: 13

One of my client Motivated me to follow these golden guidelines. 1. Keep in mind that most of your clients want to feel appreciated. 2. Always treat your clients like you want to be treated. 3. The most successful entrepreneurs are those who know how to treat clients. 4. Every client is a potential referral - always remember that. 5. Continue to work on your business savvy and NEVER let money be your motivation (driver). 6. This creates a "lack mentality" and you will always have to scrap for money. 7. Prosperity comes from giving your BEST every single time (even when you don't want to).

Groups: Joomla!

91% Job Success
$27.78 /hr
1,401 hours

Abhishek K.

Abhishek K.

Software Engineer (Core Java Certified Programmer & API Expert)

India - Tests: 2 - Portfolio: 2

Has been working for the last 6 years and has worked on different areas and domains of development. Core skills are :- Java, J2EE, Struts 2.0, Hibernate, E-marketing, WebServices (REST and SOAP), MySQL, SQL-Server, PHP and many more. API integration:- Ebay API, DHL API, Auspost API, UPS API, Quickbooks API, Mailchimp API, Bing API, magento api, cognos sdk etc. Web Applications :- Ebay API interface and its integration in Spring, custom CRM in spring, Android backend in struts. Hadoop:- Hive, Pig, Sqoop Eclipse plugins:- Eclipse plugin creation. Webservices:- REST services and SOAP services both server and client. PHP :- application development in core php, a bit of wordpress and woocommerce. Antlr :- Translation of code from one language into other. EDI:- creation of EDI files after reading data from database, conversion of EDI file into xml, creation of EDI file from Magento API

100% Job Success
$18.00 /hr
2,414 hours

Maheshwari D.

Maheshwari D.

More than SIX years of experience as Analyst using various techniques

India - Tests: 1

I'm a Statistician with Six years of experience as Analyst using various techniques for Business Intelligence, data modeling & Business Analysis, towards problem resolution. Highlights Total years of working experience 8 yrs and relevant working experience in years in IT 6+ yrs. Expertise with Statistical Modeling as well as data modeling Techniques and Data Analysis. Work experience in Big Data , Hadoop, Open source technologies like R, Python Etc. Knowledge and Experience in Machine Learning, Predictive modeling and expertise in Statistical Modeling Completed SAS/Base Programmer Certification Course from SAS Institute Inc. Completed Certification Course of SAS Advanced Programming from SAS Institute Inc. Over One Year of experience using SAS for Data Analysis and SAS training. Proficient in SAS Base Programming. Proficient in Relational Database Structure and Data Manipulation. Functional Knowledge of Business Intelligence and Data Warehouse design concepts. Expertise in data modeling Techniques and Data Analysis. Detail-oriented, Self- motivated Supportive and Cooperative. Excellent interpersonal skill, quality conscious and hardworking. Technical Skills Languages SQL Packages SAS/Base, SAS/Macro (V8 & V9), SPSS, Stata Data Warehouse Tools SAS/ETL, SSIS/SSAS/SSRS Operating System Windows XP, Windows 2000,Windows 7 RDBMS Oracle 8i/9i, SQL Server 2005 Additional Tools MS Word/Excel/Access/PowerPoint, ER Win Analytics Techniques Big Data Analytics, Hadoop, R programming,Python, RapidMiner,

$27.78 /hr
0 hours

Ankit Gupta

Ankit Gupta

Excel Models / BI Analytics / Reporting / PHP Programming

India - Tests: 2 - Portfolio: 1

My core competency skills are listed below. Tableau Visulization Business Dashboards Critical Excel formulas Excel Pivots and Charts Data Analysis and Data mining VBA Programming Advance Excel Macros Web Scraping data from any website to Excel Wordpress and Other PHP CMS Core PHP

$10.00 /hr
20 hours

Nag Y

Data Sciences, Enterprise application Predictive Modeling Professional

India - Tests: 2

Nag currenty drives the Analytics team. He has executed & delivered a few flagship projects in the areas of business intelligence & data mining across some of the large organizations including Alcatel Lucent, Aricent Software Systems, Coginzant . Nag has the experience of handling data-intensive assignments involving millions of customer base. He has led a few first-time-in-the-industry projects that required R&D and application of algorithms tailored to the domain. Specialties:Nag ’s competencies include: - A smart professional with 8+ years of experience in Enterprise applications. Hands on experience in developing multi tier architecture applications using Java, SOAP,Hibernate,Spring,Design Patterns ,OOAD,API design. Three years of experience in Big Data platform using Apache Hadoop and its ecosystem. Expertise in ingestion, storage, querying, processing and analysis of Big data. Experienced in using Pig, Hive, Sqoop, Oozie, Flume, HBase. Good experience with the Hive Query optimization and Performance tuning.  Hands on experience in writing Pig Latin Scripts and custom implementations using UDF'S. Good experience with Sqoop for importing data from different RDBMS to HDFS and export data back to RDBMS systems for ad-hoc Reporting.  Experienced in batch job workflow scheduling and monitoring tools like Oozie. Extended Hive and Pig core functionality by writing custom UDFs. Experienced in analyzing data using HiveQL, Pig Latin, and custom Map Reduce programs in Java. Worked as technical team lead/off shore coordinator in leading multiple projects for timely deliverables. Comprehensive problem solving abilities, excellent verbal and written communication skills, willingness to learn, Team facilitator. Successfully plans and coordinates teams for multiple IT projects with managing time lines and budgets efficiently by analyzing, designing, and implementing cost-effective solutions Able to think "out of the box" and make critical decisions. Able to work effectively under pressure with changing priorities and deadlines. Provided direction for development, migration, and integration activities. Sees projects through from inception to deployment. Big Data analytics: storing and mining large & complex data - Customer scoring for various propensities: likelihood of churn, sale etc. - Product analytics: price elasticity of demand, market baskets - Web analytics: e-commerce & digital marketing optimization - Text mining: converting text into structured data, extracting semantics - Transforming academic research into industry applications - Building an analytics layer over existing ERP & CRM applications. 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. Excellent Knowledge 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

$30.00 /hr
0 hours

Spectovision Pvt Ltd.

SpectoVision Technologies Pvt Ltd


Spectovision is a leading Software Products and Services company serving clients across all over the world. We are expert in Mobile & Web Development and Recruitment Services. We don’t just design and develop the applications but we transform them to powerful business channels by adding value to them with our experience and expertise in the field. Websites that we design are not just mere web presences but a powerful tool for promoting a business and a source for generating new business leads. Our Website & Mobile Designing and Development Services are complemented by website maintenance and internet promotion services that ensure our clients get the complete solutions under one single roof.

$15.00 /hr
0 hours

Kelli S.

Kelli S. Agency Contractor

IT Consultant - Strong Technical AND Business Results - BSE and MBA

United States - Tests: 5 - Portfolio: 11

I am an engineer, project management professional, business professional and entrepreneur with more than 17 years of experience in information management and technology. I have extensive multi-disciplinary experience in strategic planning, business analysis, project management, systems engineering and design/test, and, human resource management. I am also a hands-on developer with 6+ years of client-facing systems integration and coding experience. I have been the project manager for multi-million dollar projects for Fortune 100 companies. I have also managed and implemented projects for one-person SMBs. Industry vertical experience includes: hi-tech, media, healthcare, government, legal, auto, financial/insurance, education, consumer product goods and aviation. I have an excellent blend of business, technical and creative experience. I also possess excellent analytical, written and oral communication skills. I'm seeking a wide range of business, technical and/or creative opportunities.


Associated with: A-Assist-Integration, LLC

100% Job Success
$48.99 /hr
1,881 hours