Period
to 12 December 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 12 December 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
12 Dec 2018
Same period 2017 Same period 2016
Rank 236 197 219
Rank change year-on-year -39 +22 +18
Contract jobs citing MapReduce 19 59 27
As % of all contract IT jobs advertised in the City of London 0.27% 0.82% 0.41%
As % of the Processes & Methodologies category 0.31% 0.91% 0.46%
Number of daily rates quoted 14 54 20
City of London median daily rate £663 £613 £606
Median daily rate % change year-on-year +8.16% +1.03% +5.43%
10th Percentile £443 £525 £509
90th Percentile £700 £675 £675
Central London median daily rate £650 £613 £625
% change year-on-year +6.12% -2.00% +11.11%
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 6,223 6,457 5,812
As % of all contract IT jobs advertised in the City of London 87.24% 89.58% 88.58%
Number of daily rates quoted 4,915 5,144 4,607
City of London median daily rate £513 £500 £475
Median daily rate % change year-on-year +2.45% +5.32% -
10th Percentile £325 £325 £319
90th Percentile £675 £688 £670
Central London median daily rate £505 £500 £475
% change year-on-year +1.00% +5.26% +2.70%
Number of hourly rates quoted 86 60 53
City of London median hourly rate £18.85 £18.70 £20.00
Median hourly rate % change year-on-year +0.80% -6.50% -
10th Percentile £13.31 £13.15 £13.75
90th Percentile £34.00 £31.05 £55.00
Central London median hourly rate £19.00 £20.25 £19.00
% change year-on-year -6.17% +6.58% -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 12 December 2018.

Contractor daily rate histogram for MapReduce in the City of London

For the 6 months to 12 December 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 14 (73.68%) Hadoop
2 12 (63.16%) Big Data
3 11 (57.89%) Agile Software Development
3 11 (57.89%) Python
4 10 (52.63%) MongoDB
4 10 (52.63%) NoSQL
5 9 (47.37%) Apache Hive
5 9 (47.37%) Kafka
5 9 (47.37%) Apache Spark
5 9 (47.37%) Finance
5 9 (47.37%) Scrum
5 9 (47.37%) Git (software)
6 8 (42.11%) Banking
6 8 (42.11%) Java
6 8 (42.11%) JavaScript
6 8 (42.11%) Jenkins
6 8 (42.11%) HDFS
7 7 (36.84%) Subversion
7 7 (36.84%) Continuous Integration
8 6 (31.58%) Test Scripting
8 6 (31.58%) User Acceptance Testing
8 6 (31.58%) RESTful
8 6 (31.58%) JSON
8 6 (31.58%) Data Modelling
8 6 (31.58%) Business Intelligence
8 6 (31.58%) Relational Database
8 6 (31.58%) Amazon AWS
8 6 (31.58%) Open Source
8 6 (31.58%) HBase
8 6 (31.58%) SDLC

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 9 (47.37%) Apache Spark
2 4 (21.05%) Apache
3 3 (15.79%) Apache Pig
4 2 (10.53%) Elasticsearch
Cloud Services
1 6 (31.58%) Amazon AWS
2 4 (21.05%) GitHub
2 4 (21.05%) Microsoft Azure
3 3 (15.79%) Google Cloud Platform
3 3 (15.79%) IBM Cloud
4 2 (10.53%) Amazon EC2
4 2 (10.53%) Amazon EMR
4 2 (10.53%) Amazon S3
4 2 (10.53%) AWS Lambda
4 2 (10.53%) Serverless
Database & Business Intelligence
1 14 (73.68%) Hadoop
2 12 (63.16%) Big Data
3 10 (52.63%) MongoDB
3 10 (52.63%) NoSQL
4 9 (47.37%) Apache Hive
5 6 (31.58%) HBase
5 6 (31.58%) Relational Database
6 5 (26.32%) RDBMS
7 4 (21.05%) Sqoop
8 3 (15.79%) Apache Cassandra
8 3 (15.79%) PostgreSQL
8 3 (15.79%) Presto
9 2 (10.53%) Azkaban
9 2 (10.53%) Data Warehouse
9 2 (10.53%) Impala
9 2 (10.53%) SQL Server
10 1 (5.26%) Spark SQL
Development Applications
1 9 (47.37%) Git (software)
2 8 (42.11%) Jenkins
3 7 (36.84%) Subversion
4 3 (15.79%) JIRA
5 2 (10.53%) Visual Studio
5 2 (10.53%) Visual Studio Team System
6 1 (5.26%) Eclipse
6 1 (5.26%) Maven
6 1 (5.26%) TestRail
General
1 9 (47.37%) Finance
2 8 (42.11%) Banking
3 5 (26.32%) Front Office
3 5 (26.32%) Investment Banking
4 1 (5.26%) Publishing
4 1 (5.26%) Retail
Job Titles
1 10 (52.63%) Data Engineer
2 9 (47.37%) Big Data Engineer
3 6 (31.58%) Developer
4 5 (26.32%) Node.js Developer
4 5 (26.32%) NoSQL Developer
5 2 (10.53%) Administrator
5 2 (10.53%) Hadoop Administrator
5 2 (10.53%) Machine Learning Engineer
5 2 (10.53%) Senior Data Engineer
6 1 (5.26%) Cloud Engineer
6 1 (5.26%) Java Developer
6 1 (5.26%) Senior Developer
6 1 (5.26%) Senior Java Developer
6 1 (5.26%) Senior Test Engineer
6 1 (5.26%) Test Engineer
Libraries, Frameworks & Software Standards
1 9 (47.37%) Kafka
2 6 (31.58%) JSON
2 6 (31.58%) RESTful
3 5 (26.32%) Express
3 5 (26.32%) FIX Protocol
3 5 (26.32%) FpML
3 5 (26.32%) lodash
3 5 (26.32%) Mongoose
3 5 (26.32%) Node.js
3 5 (26.32%) Underscore.js
3 5 (26.32%) XML
4 3 (15.79%) PySpark
5 1 (5.26%) Apache Commons
5 1 (5.26%) CSS3
5 1 (5.26%) Dask
5 1 (5.26%) Elastic Stack
5 1 (5.26%) Guava
5 1 (5.26%) REST
5 1 (5.26%) Spark Streaming
5 1 (5.26%) Spring Boot
Miscellaneous
1 5 (26.32%) Enterprise Software
1 5 (26.32%) Fixed Income
2 3 (15.79%) Algorithms
3 2 (10.53%) Private Cloud
4 1 (5.26%) Analytical Skills
4 1 (5.26%) Greenfield Project
Operating Systems
1 5 (26.32%) Linux
2 2 (10.53%) Red Hat Enterprise Linux
2 2 (10.53%) Unix
Processes & Methodologies
1 11 (57.89%) Agile Software Development
2 9 (47.37%) Scrum
3 7 (36.84%) Continuous Integration
4 6 (31.58%) Business Intelligence
4 6 (31.58%) Data Modelling
4 6 (31.58%) Open Source
4 6 (31.58%) SDLC
4 6 (31.58%) Test Scripting
4 6 (31.58%) User Acceptance Testing
5 5 (26.32%) Change Control
5 5 (26.32%) Continuous Delivery
5 5 (26.32%) Data Engineering
5 5 (26.32%) DevOps
5 5 (26.32%) Domain Models
5 5 (26.32%) ETL
5 5 (26.32%) Integration Testing
5 5 (26.32%) SOA
5 5 (26.32%) Technical Analysis
6 3 (15.79%) Kanban
6 3 (15.79%) Machine Learning
Programming Languages
1 11 (57.89%) Python
2 8 (42.11%) Java
2 8 (42.11%) JavaScript
3 4 (21.05%) Scala
3 4 (21.05%) SQL
4 2 (10.53%) C#
4 2 (10.53%) R
5 1 (5.26%) AWK
5 1 (5.26%) Bash Shell
5 1 (5.26%) Java 8
5 1 (5.26%) Pig Latin
5 1 (5.26%) sed
Qualifications
1 1 (5.26%) Degree
1 1 (5.26%) Master's Degree
Quality Assurance & Compliance
1 1 (5.26%) QA
System Software
1 8 (42.11%) HDFS
2 3 (15.79%) Apache Flume
3 2 (10.53%) Docker
Systems Management
1 5 (26.32%) Hadoop YARN
2 3 (15.79%) Ambari
2 3 (15.79%) Oozie
3 1 (5.26%) Ansible
3 1 (5.26%) Kibana
3 1 (5.26%) logstash
3 1 (5.26%) Puppet
Vendors
1 3 (15.79%) Google
1 3 (15.79%) IBM
1 3 (15.79%) Tableau
2 2 (10.53%) Hortonworks
2 2 (10.53%) Microsoft
2 2 (10.53%) Oracle
2 2 (10.53%) Red Hat
2 2 (10.53%) Talend
3 1 (5.26%) Cloudera