Period
to 23 June 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for MapReduce skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited MapReduce over the 6 months to 23 June 2018 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

MapReduce
Central London > City of London
6 months to
23 Jun 2018
Same period 2017 Same period 2016
Rank 221 196 224
Rank change year-on-year -25 +28 +36
Contract jobs citing MapReduce 30 34 15
As % of all contract IT jobs advertised in the City of London 0.43% 0.54% 0.23%
As % of the Processes & Methodologies category 0.50% 0.62% 0.26%
Number of daily rates quoted 25 32 12
City of London median daily rate £485 £650 £531
Median daily rate % change year-on-year -25.38% +22.35% +1.19%
10th Percentile £375 £411 £465
90th Percentile £645 £675 £575
Central London median daily rate £485 £650 £530
% change year-on-year -25.38% +22.64% -0.93%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

MapReduce is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 6,053 5,472 5,797
As % of all contract IT jobs advertised in the City of London 87.27% 87.57% 87.59%
Number of daily rates quoted 4,815 4,234 4,658
City of London median daily rate £513 £500 £475
Median daily rate % change year-on-year +2.50% +5.26% +5.56%
10th Percentile £334 £313 £305
90th Percentile £688 £675 £650
Central London median daily rate £500 £493 £463
% change year-on-year +1.52% +6.49% +2.78%
Number of hourly rates quoted 96 45 55
City of London median hourly rate £18.70 £20.00 £20.00
Median hourly rate % change year-on-year -6.50% - -12.40%
10th Percentile £12.63 £13.13 £11.50
90th Percentile £37.86 £29.77 £49.55
Central London median hourly rate £19.25 £17.00 £20.00
% change year-on-year +13.24% -15.00% -9.60%

MapReduce
Job Vacancy Trend in the City of London

Job postings citing MapReduce as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for MapReduce in the City of London

MapReduce
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing MapReduce in the City of London.

Contractor daily rate trend for MapReduce in the City of London

MapReduce
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing MapReduce in the City of London over the 6 months to 23 June 2018.

Contractor daily rate histogram for MapReduce in the City of London

For the 6 months to 23 June 2018, IT contractor jobs citing MapReduce also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the City of London region with a requirement for MapReduce.

1 28 (93.33%) Java
2 27 (90.00%) Hadoop
2 27 (90.00%) Big Data
3 25 (83.33%) Python
4 19 (63.33%) NoSQL
5 17 (56.67%) MongoDB
6 15 (50.00%) Apache Hive
7 14 (46.67%) REST
7 14 (46.67%) JSON
8 13 (43.33%) ETL
8 13 (43.33%) Apache Cassandra
8 13 (43.33%) Apache Spark
9 12 (40.00%) Git (software)
9 12 (40.00%) Kafka
9 12 (40.00%) TDD
10 11 (36.67%) HBase
10 11 (36.67%) Jenkins
10 11 (36.67%) Relational Database
10 11 (36.67%) Microservices
11 10 (33.33%) Java 8
11 10 (33.33%) HDFS
11 10 (33.33%) Hortonworks
11 10 (33.33%) Continuous Integration
11 10 (33.33%) Agile Software Development
12 9 (30.00%) Apache
12 9 (30.00%) Cloudera
12 9 (30.00%) Machine Learning
12 9 (30.00%) Apache Pig
12 9 (30.00%) Spring Boot
13 8 (26.67%) Hadoop YARN

MapReduce
Co-occurring IT Skills in the City of London by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 13 (43.33%) Apache Spark
2 9 (30.00%) Apache
2 9 (30.00%) Apache Pig
3 8 (26.67%) Elasticsearch
4 4 (13.33%) Apache Solr
5 1 (3.33%) Tomcat
Cloud Services
1 8 (26.67%) Microsoft Azure
2 7 (23.33%) Amazon AWS
3 5 (16.67%) Google Cloud Platform
4 3 (10.00%) Azure Active Directory
5 1 (3.33%) Amazon EMR
5 1 (3.33%) Amazon S3
5 1 (3.33%) Cloud Computing
5 1 (3.33%) GitHub
5 1 (3.33%) Yarn
Communications & Networking
1 3 (10.00%) DNS
1 3 (10.00%) HTTP
1 3 (10.00%) X.509
2 2 (6.67%) Kerberos
Database & Business Intelligence
1 27 (90.00%) Big Data
1 27 (90.00%) Hadoop
2 19 (63.33%) NoSQL
3 17 (56.67%) MongoDB
4 15 (50.00%) Apache Hive
5 13 (43.33%) Apache Cassandra
6 11 (36.67%) HBase
6 11 (36.67%) Relational Database
7 8 (26.67%) Sqoop
8 7 (23.33%) RDBMS
9 5 (16.67%) Data Warehouse
10 4 (13.33%) SQL Server
11 3 (10.00%) Bigtable
11 3 (10.00%) Blockchain
11 3 (10.00%) Power BI
11 3 (10.00%) SQL Server Integration Services
12 2 (6.67%) Impala
13 1 (3.33%) Presto
13 1 (3.33%) Spark SQL
13 1 (3.33%) SQL Server 2014
Development Applications
1 12 (40.00%) Git (software)
2 11 (36.67%) Jenkins
3 5 (16.67%) JUnit
3 5 (16.67%) TeamCity
4 1 (3.33%) JIRA
4 1 (3.33%) Maven
General
1 5 (16.67%) Retail
2 3 (10.00%) Banking
3 2 (6.67%) Finance
4 1 (3.33%) Investment Banking
4 1 (3.33%) Publishing
Job Titles
1 21 (70.00%) Developer
2 10 (33.33%) Java Developer
3 9 (30.00%) Big Data Developer
4 8 (26.67%) Senior Developer
4 8 (26.67%) Senior Java Developer
5 6 (20.00%) Data Engineer
6 3 (10.00%) Big Data Engineer
6 3 (10.00%) Data Integration Developer
6 3 (10.00%) Data Scientist
6 3 (10.00%) Integration Developer
7 1 (3.33%) Machine Learning Scientist
7 1 (3.33%) Senior Data Scientist
Libraries, Frameworks & Software Standards
1 14 (46.67%) JSON
1 14 (46.67%) REST
2 12 (40.00%) Kafka
3 9 (30.00%) Spring Boot
4 6 (20.00%) XML
5 5 (16.67%) Keras
5 5 (16.67%) MLlib
5 5 (16.67%) scikit-learn
5 5 (16.67%) TensorFlow
6 4 (13.33%) JMS
7 3 (10.00%) .NET
7 3 (10.00%) HTML
7 3 (10.00%) LDAP
7 3 (10.00%) Lucene
7 3 (10.00%) OAuth2
7 3 (10.00%) SOAP
7 3 (10.00%) Web Services
7 3 (10.00%) WSDL
7 3 (10.00%) XML Schema
7 3 (10.00%) XSLT
Miscellaneous
1 3 (10.00%) Algorithms
1 3 (10.00%) Reference Data
2 1 (3.33%) Analytical Skills
2 1 (3.33%) Anti-Piracy
2 1 (3.33%) Data Structures
2 1 (3.33%) Foreign Exchange (FX)
2 1 (3.33%) Greenfield Project
2 1 (3.33%) IPTV
2 1 (3.33%) Linux Command Line
Operating Systems
1 6 (20.00%) Linux
2 3 (10.00%) Unix
Processes & Methodologies
1 13 (43.33%) ETL
2 12 (40.00%) TDD
3 11 (36.67%) Microservices
4 10 (33.33%) Agile Software Development
4 10 (33.33%) Continuous Integration
5 9 (30.00%) Machine Learning
6 8 (26.67%) API Testing
7 7 (23.33%) Analytics
8 6 (20.00%) OOP
9 5 (16.67%) Data Engineering
9 5 (16.67%) Data Modelling
9 5 (16.67%) Deep Learning
9 5 (16.67%) DevOps
9 5 (16.67%) E-Commerce
9 5 (16.67%) Operations Research
9 5 (16.67%) Predictive Analytics
9 5 (16.67%) Software Delivery
10 4 (13.33%) Continuous Delivery
10 4 (13.33%) Open Source
11 3 (10.00%) Data Migration
Programming Languages
1 28 (93.33%) Java
2 25 (83.33%) Python
3 10 (33.33%) Java 8
4 7 (23.33%) Scala
5 6 (20.00%) SQL
6 5 (16.67%) Shell Script
7 4 (13.33%) C#
8 3 (10.00%) Bash Shell
8 3 (10.00%) JavaScript
8 3 (10.00%) XPath
9 2 (6.67%) Julia
9 2 (6.67%) MATLAB
9 2 (6.67%) PL/SQL
9 2 (6.67%) R
10 1 (3.33%) ES6
10 1 (3.33%) PHP
10 1 (3.33%) TypeScript
Qualifications
1 3 (10.00%) Security Cleared
2 2 (6.67%) DV Cleared
3 1 (3.33%) SC Cleared
Quality Assurance & Compliance
1 3 (10.00%) Data Quality
System Software
1 10 (33.33%) HDFS
2 5 (16.67%) Apache Flume
2 5 (16.67%) Docker
3 3 (10.00%) Active Directory
3 3 (10.00%) Apache ZooKeeper
Systems Management
1 8 (26.67%) Hadoop YARN
1 8 (26.67%) Puppet
2 3 (10.00%) Ansible
2 3 (10.00%) Single Sign-On
3 2 (6.67%) Oozie
4 1 (3.33%) Kibana
4 1 (3.33%) logstash
Vendors
1 10 (33.33%) Hortonworks
2 9 (30.00%) Cloudera
3 5 (16.67%) MapR
3 5 (16.67%) Microsoft
4 2 (6.67%) Google
4 2 (6.67%) Oracle
4 2 (6.67%) Tableau
5 1 (3.33%) FXall
5 1 (3.33%) Reuters