The first table below looks at the demand for MapReduce skills in IT jobs advertised for the City of London region. Included is a guide to the average salaries offered in IT jobs that have cited MapReduce over the 3 months to 24 May 2013 with a comparison to the same period in the previous 2 years. The second table is for comparison and provides aggregates for all of the Application Development category for the City of London region.

Location
3 months to
24 May 2013
Same period 2012 Same period 2011
MapReduce
Rank 304 307 330
Rank change year-on-year
+3 +23
Permanent jobs citing MapReduce 17 16 1
As % of all permanent IT jobs located in the City of London 0.146% 0.122% 0.006%
As % of the Application Development category 0.379% 0.327% 0.018%
Number of salaries quoted 16 16 1
Average salary £58,750 £80,000 £60,000
Average salary % change year-on-year
-26.56% +33.33%
UK excluding London average salary £50,000 £50,000 £45,000
% change year-on-year
- +11.11%
All Application Development
City of London
Permanent IT job ads with a match in the
Application Development category
4488 4889 5623
As % of all permanent IT jobs located in the City of London 38.47% 37.42% 36.45%
Number of salaries quoted 3945 4578 5183
Average salary £52,500 £50,000 £52,500
Average salary % change year-on-year
+5.00% -4.76%
90% offered a salary of more than £35,000 £35,000 £35,000
10% offered a salary of more than £72,500 £80,000 £75,000
UK excluding London average salary £37,500 £37,500 £35,000
% change year-on-year
- +7.14%
MapReduce
London

MapReduce
Jobs Demand Trend

This chart provides a 3-month moving total of permanent IT jobs citing MapReduce across the City of London region as a proportion of the total demand within the Application Development category.

City of London MapReduce Jobs Demand Trend

MapReduce
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing MapReduce across the City of London region.

City of London MapReduce Salary Trend

MapReduce
Salary Histogram

This chart provides a salary histogram for IT jobs citing MapReduce across the City of London region over the 3 months to 24 May 2013.

City of London MapReduce Salary Histogram

MapReduce
Top 30 Related IT Skills

For the 6 months to 24 May 2013, IT jobs across the City of London region citing MapReduce also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited MapReduce.

1 34 (87.18%) Hadoop
2 30 (76.92%) Big Data
3 26 (66.67%) Apache Pig
4 20 (51.28%) Apache Hive
5 17 (43.59%) Java
5 17 (43.59%) SQL
5 17 (43.59%) Linux
6 16 (41.03%) NoSQL
6 16 (41.03%) HBase
7 14 (35.90%) Data Mining
8 13 (33.33%) Computer Science
9 12 (30.77%) Data Modelling
9 12 (30.77%) Web Services
10 11 (28.21%) Windows
10 11 (28.21%) Python
10 11 (28.21%) Amazon AWS
10 11 (28.21%) Analytics
11 10 (25.64%) Statistics
11 10 (25.64%) Data Analysis
11 10 (25.64%) MySQL
12 9 (23.08%) Oracle
12 9 (23.08%) Data Warehouse
12 9 (23.08%) Scala
13 8 (20.51%) Amazon EC2
13 8 (20.51%) Windows Azure
13 8 (20.51%) Degree
13 8 (20.51%) Mathematics
13 8 (20.51%) ETL
13 8 (20.51%) SQL Server
13 8 (20.51%) C++

MapReduce
Top Related IT Skills by Category

For the 6 months to 24 May 2013, IT jobs across the City of London region citing MapReduce also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited MapReduce. Up to 20 skills are shown per category.

Application Development
1 12 (30.77%) Web Services
2 4 (10.26%) Spring
2 4 (10.26%) REST
3 3 (7.692%) Twisted
3 3 (7.692%) XML
3 3 (7.692%) CSS
3 3 (7.692%) HTML
3 3 (7.692%) SAML
3 3 (7.692%) Lucene
3 3 (7.692%) Grails
3 3 (7.692%) JSON
3 3 (7.692%) OpenID
3 3 (7.692%) OAuth
4 2 (5.128%) .NET
4 2 (5.128%) Memcached
5 1 (2.564%) Natural Language Processing
5 1 (2.564%) Node.js
5 1 (2.564%) Sinatra
5 1 (2.564%) STL
5 1 (2.564%) ASP
Application Platforms
1 26 (66.67%) Apache Pig
2 11 (28.21%) Amazon AWS
3 8 (20.51%) Amazon EC2
3 8 (20.51%) Windows Azure
4 7 (17.95%) OpenStack
4 7 (17.95%) Kafka
4 7 (17.95%) Apache
5 3 (7.692%) IIS
5 3 (7.692%) SAS
5 3 (7.692%) nginx
5 3 (7.692%) Mule
6 2 (5.128%) Resin
6 2 (5.128%) Confluence
6 2 (5.128%) Oracle Coherence
6 2 (5.128%) WebLogic
6 2 (5.128%) Tomcat
7 1 (2.564%) Amazon EMR
7 1 (2.564%) ActiveMQ
Applications
1 3 (7.692%) SPSS
2 1 (2.564%) MS Excel
Communications & Networking
1 6 (15.38%) HTTP
2 3 (7.692%) SSL
2 3 (7.692%) TCP/IP
3 2 (5.128%) NAS
3 2 (5.128%) Internet
3 2 (5.128%) SAN
4 1 (2.564%) Firewall
Database & Business Intelligence
1 34 (87.18%) Hadoop
2 30 (76.92%) Big Data
3 20 (51.28%) Apache Hive
4 16 (41.03%) NoSQL
4 16 (41.03%) HBase
5 14 (35.90%) Data Mining
6 10 (25.64%) MySQL
7 9 (23.08%) Data Warehouse
8 8 (20.51%) SQL Server
8 8 (20.51%) MongoDB
9 7 (17.95%) Redis
9 7 (17.95%) SQL Server Analysis Services
9 7 (17.95%) SQL Server Integration Services
10 6 (15.38%) Mahout
11 5 (12.82%) Apache Cassandra
12 4 (10.26%) CouchDB
12 4 (10.26%) RDBMS
13 3 (7.692%) OLAP
14 2 (5.128%) Oracle 8/8i
14 2 (5.128%) Neo4j
Development Applications
1 5 (12.82%) Git (software)
2 4 (10.26%) Jenkins
3 2 (5.128%) JIRA
4 1 (2.564%) Capistrano
4 1 (2.564%) Cucumber
4 1 (2.564%) RSpec
General
1 3 (7.692%) Finance
2 2 (5.128%) Investment Banking
2 2 (5.128%) Banking
2 2 (5.128%) Advertising
3 1 (2.564%) Music
3 1 (2.564%) Marketing
Job Titles
1 21 (53.85%) Developer
2 7 (17.95%) Data Scientist
2 7 (17.95%) Software Engineer
3 4 (10.26%) Senior Developer
4 3 (7.692%) Software Developer
4 3 (7.692%) Java Developer
4 3 (7.692%) Java Software Engineer
4 3 (7.692%) Java Software Developer
5 2 (5.128%) Research Engineer
5 2 (5.128%) Systems Administrator
5 2 (5.128%) Architect
5 2 (5.128%) Analyst
5 2 (5.128%) Administrator
5 2 (5.128%) Hadoop Developer
6 1 (2.564%) DevOps Engineer
6 1 (2.564%) Research Scientist
6 1 (2.564%) Technical Architect
6 1 (2.564%) C++ Developer
6 1 (2.564%) Data Architect
6 1 (2.564%) Systems Engineer
Miscellaneous
1 13 (33.33%) Computer Science
2 10 (25.64%) Statistics
3 8 (20.51%) Mathematics
4 7 (17.95%) Social Media
4 7 (17.95%) Social Network
5 6 (15.38%) Visualisation
5 6 (15.38%) Neural Network
6 5 (12.82%) Grid Computing
6 5 (12.82%) Physics
7 4 (10.26%) Artificial Intelligence
7 4 (10.26%) Machine Learning
8 2 (5.128%) Data Integration
8 2 (5.128%) Wiki
9 1 (2.564%) Open Source
9 1 (2.564%) SaaS
Operating Systems
1 17 (43.59%) Linux
2 11 (28.21%) Windows
3 4 (10.26%) UNIX
4 2 (5.128%) CentOS
4 2 (5.128%) Red Hat Enterprise Linux
4 2 (5.128%) Solaris
5 1 (2.564%) Debian
5 1 (2.564%) Ubuntu
Processes & Methodologies
1 12 (30.77%) Data Modelling
2 11 (28.21%) Analytics
3 10 (25.64%) Data Analysis
4 8 (20.51%) ETL
5 7 (17.95%) Complex Event Processing
5 7 (17.95%) Big Data Analytics
6 5 (12.82%) Scrum
6 5 (12.82%) Software Engineering
6 5 (12.82%) TDD
7 4 (10.26%) SOA
8 3 (7.692%) OOP
8 3 (7.692%) OO
8 3 (7.692%) Algorithmic Trading
8 3 (7.692%) Refactoring
8 3 (7.692%) Predictive Modelling
8 3 (7.692%) Kanban
9 2 (5.128%) Business Analysis
9 2 (5.128%) Change Management
9 2 (5.128%) E-Commerce
9 2 (5.128%) High Availability
Programming Languages
1 17 (43.59%) Java
1 17 (43.59%) SQL
2 11 (28.21%) Python
3 9 (23.08%) Scala
4 8 (20.51%) C++
5 7 (17.95%) Perl
6 6 (15.38%) Ruby
7 3 (7.692%) R
7 3 (7.692%) Clojure
7 3 (7.692%) PHP
7 3 (7.692%) JavaScript
7 3 (7.692%) Haskell
7 3 (7.692%) Erlang
8 2 (5.128%) Groovy
8 2 (5.128%) Bash shell
8 2 (5.128%) Shell Script
8 2 (5.128%) VBScript
8 2 (5.128%) C
9 1 (2.564%) C#
Qualifications
1 8 (20.51%) Degree
2 7 (17.95%) PhD
Quality Assurance & Compliance
1 1 (2.564%) Data Quality
System Software
1 1 (2.564%) Apache ZooKeeper
1 1 (2.564%) VirtualBox
1 1 (2.564%) Varnish
Systems Management
1 7 (17.95%) Puppet
2 1 (2.564%) Splunk
Vendors
1 9 (23.08%) Oracle
2 7 (17.95%) Vertica
3 3 (7.692%) Hortonworks
3 3 (7.692%) Cloudera
4 2 (5.128%) DataSynapse
4 2 (5.128%) GigaSpaces
4 2 (5.128%) TIBCO
4 2 (5.128%) Microsoft
4 2 (5.128%) Sun
4 2 (5.128%) JBoss
4 2 (5.128%) Azul
5 1 (2.564%) Rackspace