Period
to 19 September 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 19 September 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
19 Sep 2018
Same period 2017 Same period 2016
Rank 229 184 219
Rank change year-on-year -45 +35 +36
Contract jobs citing MapReduce 25 59 16
As % of all contract IT jobs advertised in the City of London 0.36% 0.87% 0.24%
As % of the Processes & Methodologies category 0.41% 0.98% 0.27%
Number of daily rates quoted 19 54 15
City of London median daily rate £425 £594 £575
Median daily rate % change year-on-year -28.42% +3.26% +4.55%
10th Percentile £375 £490 £513
90th Percentile £588 £675 £650
Central London median daily rate £488 £594 £575
% change year-on-year -17.89% +3.26% +4.55%
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 6,062 6,047 5,952
As % of all contract IT jobs advertised in the City of London 86.58% 89.02% 87.65%
Number of daily rates quoted 4,832 4,722 4,802
City of London median daily rate £505 £500 £475
Median daily rate % change year-on-year +1.00% +5.26% +2.70%
10th Percentile £331 £325 £313
90th Percentile £687 £675 £656
Central London median daily rate £500 £500 £475
% change year-on-year - +5.26% +5.56%
Number of hourly rates quoted 103 57 50
City of London median hourly rate £18.70 £20.00 £20.00
Median hourly rate % change year-on-year -6.50% - -4.76%
10th Percentile £13.05 £13.31 £11.25
90th Percentile £31.50 £31.05 £55.00
Central London median hourly rate £18.70 £19.00 £20.00
% change year-on-year -1.58% -5.00% -

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 19 September 2018.

Contractor daily rate histogram for MapReduce in the City of London

For the 6 months to 19 September 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 25 (100.00%) Hadoop
2 23 (92.00%) Big Data
3 22 (88.00%) Python
4 19 (76.00%) Java
5 14 (56.00%) NoSQL
5 14 (56.00%) Apache Spark
6 13 (52.00%) MongoDB
6 13 (52.00%) Kafka
7 12 (48.00%) Apache Hive
8 9 (36.00%) Open Source
8 9 (36.00%) Jenkins
8 9 (36.00%) Java 8
9 8 (32.00%) Puppet
9 8 (32.00%) REST
9 8 (32.00%) HBase
9 8 (32.00%) HDFS
9 8 (32.00%) Microservices
9 8 (32.00%) Spring Boot
9 8 (32.00%) API Testing
9 8 (32.00%) TDD
9 8 (32.00%) JSON
10 7 (28.00%) SQL
10 7 (28.00%) DevOps
11 6 (24.00%) Hadoop YARN
11 6 (24.00%) Sqoop
11 6 (24.00%) Machine Learning
11 6 (24.00%) Linux
11 6 (24.00%) Git (software)
12 5 (20.00%) Agile Software Development
12 5 (20.00%) Finance

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 14 (56.00%) Apache Spark
2 4 (16.00%) Apache
3 3 (12.00%) Apache Pig
3 3 (12.00%) Apache Solr
3 3 (12.00%) Elasticsearch
Cloud Services
1 5 (20.00%) GitHub
2 4 (16.00%) Amazon AWS
3 3 (12.00%) Google Cloud Platform
3 3 (12.00%) IBM Cloud
4 2 (8.00%) Amazon EMR
4 2 (8.00%) Amazon S3
4 2 (8.00%) Microsoft Azure
5 1 (4.00%) Amazon EC2
5 1 (4.00%) AWS Lambda
5 1 (4.00%) Cloud Computing
5 1 (4.00%) Serverless
Communications & Networking
1 1 (4.00%) Kerberos
Database & Business Intelligence
1 25 (100.00%) Hadoop
2 23 (92.00%) Big Data
3 14 (56.00%) NoSQL
4 13 (52.00%) MongoDB
5 12 (48.00%) Apache Hive
6 8 (32.00%) HBase
7 6 (24.00%) Sqoop
8 5 (20.00%) Apache Cassandra
9 4 (16.00%) Relational Database
10 3 (12.00%) PostgreSQL
10 3 (12.00%) Presto
11 2 (8.00%) RDBMS
11 2 (8.00%) Spark SQL
11 2 (8.00%) SQL Server
12 1 (4.00%) Azkaban
12 1 (4.00%) Data Warehouse
12 1 (4.00%) Impala
Development Applications
1 9 (36.00%) Jenkins
2 6 (24.00%) Git (software)
3 3 (12.00%) JIRA
4 2 (8.00%) Subversion
4 2 (8.00%) Visual Studio
4 2 (8.00%) Visual Studio Team System
5 1 (4.00%) TestRail
General
1 5 (20.00%) Finance
2 3 (12.00%) Banking
3 2 (8.00%) Publishing
Job Titles
1 12 (48.00%) Developer
2 9 (36.00%) Java Developer
3 8 (32.00%) Senior Developer
3 8 (32.00%) Senior Java Developer
4 7 (28.00%) Big Data Engineer
4 7 (28.00%) Data Engineer
5 3 (12.00%) Big Data Developer
5 3 (12.00%) Data Scientist
6 2 (8.00%) Administrator
6 2 (8.00%) Hadoop Administrator
6 2 (8.00%) Machine Learning Engineer
6 2 (8.00%) Senior Data Engineer
7 1 (4.00%) Cloud Engineer
7 1 (4.00%) Machine Learning Scientist
7 1 (4.00%) Senior Data Scientist
7 1 (4.00%) Senior Test Engineer
7 1 (4.00%) Test Engineer
Libraries, Frameworks & Software Standards
1 13 (52.00%) Kafka
2 8 (32.00%) JSON
2 8 (32.00%) REST
2 8 (32.00%) Spring Boot
3 3 (12.00%) PySpark
4 2 (8.00%) CSS
4 2 (8.00%) Elastic Stack
4 2 (8.00%) HTML
4 2 (8.00%) RESTful
4 2 (8.00%) Spark Streaming
4 2 (8.00%) Torch
5 1 (4.00%) CSS3
5 1 (4.00%) Dask
5 1 (4.00%) HTML5
5 1 (4.00%) J2EE
5 1 (4.00%) JMS
5 1 (4.00%) RabbitMQ
Miscellaneous
1 5 (20.00%) Algorithms
2 2 (8.00%) Private Cloud
3 1 (4.00%) Analytical Skills
3 1 (4.00%) Anti-Piracy
3 1 (4.00%) Data Structures
3 1 (4.00%) Greenfield Project
3 1 (4.00%) IPTV
3 1 (4.00%) Linux Command Line
Operating Systems
1 6 (24.00%) Linux
2 4 (16.00%) Unix
3 2 (8.00%) Red Hat Enterprise Linux
Processes & Methodologies
1 9 (36.00%) Open Source
2 8 (32.00%) API Testing
2 8 (32.00%) Microservices
2 8 (32.00%) TDD
3 7 (28.00%) DevOps
4 6 (24.00%) Machine Learning
5 5 (20.00%) Agile Software Development
5 5 (20.00%) Data Engineering
5 5 (20.00%) Data Science
6 4 (16.00%) ETL
6 4 (16.00%) Kanban
7 3 (12.00%) Analytics
7 3 (12.00%) Continuous Integration
7 3 (12.00%) Data Modelling
7 3 (12.00%) Problem-Solving
7 3 (12.00%) Scrum
8 2 (8.00%) Data Strategy
8 2 (8.00%) Deployment Automation
8 2 (8.00%) Storage Management
8 2 (8.00%) Task Automation
Programming Languages
1 22 (88.00%) Python
2 19 (76.00%) Java
3 9 (36.00%) Java 8
4 7 (28.00%) SQL
5 4 (16.00%) JavaScript
5 4 (16.00%) R
6 2 (8.00%) C#
6 2 (8.00%) Julia
6 2 (8.00%) MATLAB
6 2 (8.00%) PL/SQL
6 2 (8.00%) Scala
7 1 (4.00%) PHP
Quality Assurance & Compliance
1 1 (4.00%) QA
System Software
1 8 (32.00%) HDFS
2 3 (12.00%) Apache Flume
3 2 (8.00%) Apache ZooKeeper
3 2 (8.00%) Docker
Systems Management
1 8 (32.00%) Puppet
2 6 (24.00%) Hadoop YARN
3 4 (16.00%) Oozie
4 3 (12.00%) Ambari
4 3 (12.00%) Ansible
5 2 (8.00%) Kibana
5 2 (8.00%) logstash
Vendors
1 4 (16.00%) Oracle
1 4 (16.00%) Tableau
2 3 (12.00%) Google
2 3 (12.00%) IBM
3 2 (8.00%) Microsoft
3 2 (8.00%) Red Hat
3 2 (8.00%) Talend
4 1 (4.00%) Cloudera
4 1 (4.00%) Hortonworks