Hadoop Freelancers

Browse Hadoop job posts for project examples or post your job on Upwork for free!

Hadoop Job Cost Overview

Typical total cost of Upwork Hadoop projects based on completed and fixed-price jobs.

Upwork Hadoop Jobs Completed Quarterly

On average, 16 Hadoop projects are completed every quarter on Upwork.


Time to Complete Upwork Hadoop Jobs

Time needed to complete a Hadoop project on Upwork.

Average Hadoop Freelancer Feedback Score

Hadoop Upwork freelancers typically receive a client rating of 4.71.

Last updated: July 1, 2015

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  1. Maxim Korolyov

    Maxim Korolyov

    Scala / Java expert

    Belarus - Last active: 13 days ago - Tests: 1 - Portfolio: 2

    Short story: Seasoned expert in the fields of software architecture. Passionate about Big Data, scalable, responsible, reactive and fault tolerance systems. Long story: - highly experienced in enterprise/web-scale software design and enterprise application integration; - experienced in Big Data: traditional data-warehousing and cutting-edge noSQL/noETL; - proficient in distributed and concurrent programming; - skilled infrastructure engineer (devops); - seasoned front-end developer; - proficient in BI, CRM, marketing automation and social/casual gaming domains, Ad platforms; - advanced in Scala / Typesafe Stack; - advanced in core Java / countless mainstream frameworks;

    $44.44 /hr
    146 hours
  2. Sachin T.

    Sachin T.

    Sr. Java Hadoop Programmer / Analyst

    United States - Last active: 1 month ago - Tests: 2

    SUMMARY: • 14+ years of experience involved in design, development, testing and support of high performance multi-threaded client server, web based applications and n tier applications in Java and C++. • 6+ years of exposure to Fixed Income, equities and derivatives with 3+ years of experience in credit risk, market risk, operational risk and FIX, CCAR reporting, VAR and stress testing. • 8+ years of server side experience using Core Java, multithreading, Spring, XML, JDBC, JMS, Web Services, JUnit, Mockito, J2EE, JSP, Servlet, HTML 5, JavaScript, jQuery and free marker templates. • 8+ years of experience in Sybase SQL, Oracle, MS SQL Server, shell, Perl, windows, Linux. • 8+ experience in requirements gathering, translating them to functional as well as technical specification. • 8+ experience in working with as well as leading offshore teams. • Exposure to big data technologies like Hadoop, pig, hive, spark, oozie and hbase. • Strong experience in various phases of Software Development Life Cycle (SDLC) Object Oriented Programming, OOD, UML concepts and J2EE Design Patterns and Test Driven Design • Hands on experience in Tomcat, WebSphere, WebLogic Application server, autosys and Microsoft Excel. • Excellent analytical, problem solving skills and good exposure to mathematics concepts in finance. • Ability to quickly master new concepts, applications, technologies, vendor products • Strong Communication and interpersonal skills with experience in Technical Writing and Documentation. • Strongly committed to deliver timely, accurate and quality work.

    $30.00 /hr
    0 hours
  3. Sumit Kumar Roy

    Sumit Kumar Roy Agency Contractor

    Data Warehousing,Business Intelligence and Big Data Scientist

    India - Last active: 3 days ago - Tests: 2 - Portfolio: 2

    Sumit have worked in the It industry for over 17 years. He has vast experience developing software from Supply Chain Management, POS, E-Commerce, BFSI, manufacturing etc. He holds a post graduate degree in IT and E-Commerce. Customer-focused, highly organized self-starter with effective customer-service skills and demonstrated ability to manage technical aspects and per-sales projects, architect tailor-made customer solutions, build relationships, communicate solution strategy and product offerings, and provide technical expertise, support, and training to sales and customers. For over seven years, career focus has been centered on Business Intelligence and Data Warehouse system design, development and deployment. The application of extensive experience across multiple DBMS' and platforms has provided a strong aptitude for multidimensional data base design coupled with robust operational architectures. Have 8 years’ experience in BI Data analysis and generation of complex Analytical/Statistical report for Finance/Marketing/Supply Chain Management.

    Associated with: Octocube Consulting

    $38.89 /hr
    243 hours
  4. Douglas H.

    Douglas H.

    Ruby developer

    United States - Last active: 12/20/2009 - Tests: 7

    Ruby has been my main language for a number of years now. I also use Javascript frequently (on the client and server), and Java and Perl when the need arises. I use Ruby on Rails for a number of projects, but a large part of my Ruby work is outside of Rails, as ruby is now my primary language. I have a great deal of SQL experience but have been using noschema databases for most new projects for a couple of years (specifically MongoDB). I have been working in a freelance environment for a number of years, and have a multi-machine linux-based network with constantly running infrastructure suited to tackle any task as it arises. I do a reasonable amount of system administration for my own pleasure or in the cloud for clients, and also run and administer client production deployments myself.

    $44.44 /hr
    79 hours
  5. Yuriy P.

    Yuriy P.

    Java Hadoop J2EE SQL software engineer

    Ukraine - Last active: 05/31/2014

    Software engineer with 10 years experience, 6 years of java j2ee development. My current job and primary interests is Big Data area and machine learning ( Hadoop, high-loaded low-latency systems, Advertising - RTB-systems, ML, AI, NLP etc ). I like to develop software with good system architecture, code quality and which better fit to clients needs. Also it is usual for me always see wide picture of solution in my head, trying to understand business domain well and helping to build robust software. During my career I took part in different projects mostly with big US \ EU companies using different technologies / tools for all stages of software life cycle: design, development, testing, task-management bug-tracking, continues integration and so on. I have experience with a lot of java / j2ee stuff. j2ee (and related): JPA Hibernate Spring EJB3 JMS BigData: Hadoop Hive Mahout etc WebServices JAX-WS SOAP and REST CXF application servers: JBoss v4 v5 v7, IBM WebSphere, Glassfish, Tomcat etc. XML processing - JAXB, parsers DOM SAX DB: Oracle - SQL PL\SQL MSSQL and others GUI - Servlet JSP ExtJS GWT , Swing some JavaScript DHTML IDE: IDEA Eclipse tools: Maven, SOAP UI, SVN, Git , Ant Interested in Hadoop / BigData projects. Also before Java I worked as a DB\ERP soft.engineer using among others systems like SAP R/3 ( ABAP / Java ) and Oracle Developer Studio toolkit Don't hesitate to contact me if you have / going to have some project/tasks related to J2EE techs stack and/or DB/SQL .

    $30.00 /hr
    0 hours
  6. Pavel N.

    Pavel N.

    data scientist and machine learning developer

    Russia - Last active: 4 months ago - Tests: 1 - Portfolio: 3

    I have experience of 3+ years of data mining in different fields like: computer vision, pattern recognition, text mining, natural language processing etc. For last year I took part in some big data projects using hadoop+java and map/reduce pattern. In my work I use python, java, R, c# and sql.

    $40.00 /hr
    0 hours
  7. Xin Jin

    Xin Jin

    Senior Programmer For Financial Apps

    United States - Last active: 2 months ago - Tests: 4

    Hi, I currently work and reside in NYC, USA. I have over 14 years of experience developing financial applications. I hold BS and MS degrees in Computer Science from Columbia University. I'm a Sun Certified Java Developer and J2EE architect. I'm also a CFA charter holder and have been mostly working in the financial industry for front-office trading and risk management in NYC, Tokyo and Shanghai. I have worked with both equities and fixed income asset classes and I am very knowledgeable with derivatives. My technical skills include Java/C++, Excel/VBA, ASP.NET, and SQL. I've worked on both web and desktop applications. I'm available for part-time projects initially. But I want to gradually convert to be working full-time on oDesk. Thank you.

    $100.00 /hr
    0 hours
  8. Patrick Lie

    Patrick Lie

    Software Engineer (C/C++, Java, C#, Hadoop, Windows, Linux)

    United States - Last active: 10/23/2013 - Tests: 1

    I am an expert Software Engineer with over 9 years of professional development experience on both Windows and Linux. I have designed, implemented and delivered numerous large scale projects at various companies and during my time at Microsoft on the Windows and Bing teams. Through that work I have become proficient in creating back-end services in C/C++, C#, Java, Python and Ruby. I am experienced with multiple aspects of Hadoop, including setting up and maintaining a cluster, configuring Flume, writing Hive/Pig/MapReduce jobs, creating Oozie workflows, etc.

    $166.67 /hr
    0 hours
  9. Sergey Sheypak

    Sergey Sheypak

    sr. hadoop developer

    Russia - Last active: 04/12/2014 - Tests: 2

    7+ years java server-side development 2+ years developing hadoop applications 2+ years building hadoop applications infrastructure 2+ years designing and implementing hadoop-based applications architecture I can design and implement apps using: java/groovy/scala, ruby/RoR, python, jython, javascript. I'm using unit, integration, end-2end tests while coding. Hadoop stack CDH (Cloudera Hadoop distribution) : mapreduce, hive, pig, impala, oozie, sqoop. Experience in complex ETL for: Hadoop, Teradata, Oracle, MySQL

    $55.56 /hr
    0 hours
  10. Paul Vasilev

    Paul Vasilev

    Scala / Java developer

    Russia - Last active: 12/02/2014 - Tests: 3

    I have been developing software using Java and Scala for 3 last years. I'm experienced in highload systems (game server, service oriented architecture) and Big Data (writing jobs for Hadoop and Spark, using machine learning). Skill List: • Scala, Java SE for server side apps - excellent • OOP principles and design patterns - good • Database management systems (MySQL, PostgreSQL, Microsoft SQL Server) - good • NoSQL storages (Hbase - good, ElasticSearch - excellent) • Maven, sbt - good • Hadoop, spark - good • Version control (SVN, Mercurial, Git - good) • IDE (Eclipse, IntelliJ IDEA - excellent, NetBeans IDE, SoapUI - good) • Machine learning (Xelopes - satisfactory, Spark MLib - good) • Java EE 6, Spring - satisfactory • Javadoc - good • JUnit testing - good • С\C++ - satisfactory

    $30.00 /hr
    0 hours