The following table provides summary statistics for contract job vacancies advertised in Middlesex with a requirement for Big Data skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Big Data over the 3 months to 22 March 2017 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.

3 months to
22 Mar 2017
Same period 2016 Same period 2015
Big Data
South East / Middlesex
Rank 16 21 22
Rank change year-on-year +5 +1  
Contract jobs citing Big Data 4 1 1
As % of all contract IT jobs advertised in Middlesex 3.08% 0.64% 0.62%
As % of the Database & Business Intelligence category 16.67% 2.56% 3.23%
Number of daily rates quoted 0 0 1
Median daily rate - - £350
UK excluding London median daily rate £488 £470 £500
% change year-on-year +3.72% -6.00%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £47.00 £33.06 £35.50
% change year-on-year +42.18% -6.88%  

Big Data is in the database and business intelligence skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Middlesex with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
Middlesex
Contract job vacancies with a requirement for database and business intelligence skills 24 39 31
As % of all contract IT job vacancies advertised in Middlesex 18.46% 25.00% 19.25%
Number of daily rates quoted 15 27 20
Median daily rate £350 £385 £396
Median daily rate % change year-on-year -9.09% -2.77%  
90% offered a daily rate of more than £260 £280 £350
10% offered a daily rate of more than £499 £513 £450
UK excluding London median daily rate £395 £388 £375
% change year-on-year +1.93% +3.33%  
Number of hourly rates quoted 0 1 2
Median hourly rate - £48.50 £32.50
Median hourly rate % change year-on-year - +49.23%  
UK excluding London median hourly rate £30.25 £33.00 £32.50
% change year-on-year -8.33% +1.53%  

Big Data
Job Vacancy Trend in Middlesex

The job posting trend of jobs advertised in Middlesex citing Big Data as a proportion of all contract or permanent IT jobs with a match in the Database & Business Intelligence category.

Job vacancy trend for Big Data in Middlesex

Big Data
Contractor Daily Rate Trend in Middlesex

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Big Data in Middlesex.

Contractor daily rate trend for Big Data in Middlesex

Big Data
Top 30 Related IT Skills in Middlesex

For the 6 months to 22 March 2017, IT contractor jobs citing Big Data also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Middlesex region with a requirement for Big Data.

1 6 (66.67%) Hadoop
2 4 (44.44%) HBase
2 4 (44.44%) Oracle
2 4 (44.44%) Linux
2 4 (44.44%) Agile Software Development
3 3 (33.33%) Data Management
3 3 (33.33%) Reference Data
3 3 (33.33%) Python
3 3 (33.33%) ETL
3 3 (33.33%) Business Intelligence
3 3 (33.33%) SQL Server
3 3 (33.33%) Master Data Management
4 2 (22.22%) Opscode Chef
4 2 (22.22%) Apache Spark
4 2 (22.22%) Ansible
4 2 (22.22%) NoSQL
4 2 (22.22%) Hortonworks
4 2 (22.22%) Scrum
4 2 (22.22%) Java
4 2 (22.22%) Configuration Management
4 2 (22.22%) Microsoft Azure
4 2 (22.22%) Amazon AWS
4 2 (22.22%) Bash Shell
4 2 (22.22%) Puppet
5 1 (11.11%) Data Analysis
5 1 (11.11%) Statistics
5 1 (11.11%) Marketing
5 1 (11.11%) Degree
5 1 (11.11%) Mathematics
5 1 (11.11%) QlikView

Big Data
Top Related IT Skills in Middlesex 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 2 (22.22%) Apache Spark
2 1 (11.11%) Apache Pig
Applications
1 1 (11.11%) Spreadsheet
Cloud Services
1 2 (22.22%) Amazon AWS
1 2 (22.22%) Microsoft Azure
Database & Business Intelligence
1 6 (66.67%) Hadoop
2 4 (44.44%) HBase
3 3 (33.33%) SQL Server
4 2 (22.22%) NoSQL
5 1 (11.11%) Apache Hive
5 1 (11.11%) QlikView
5 1 (11.11%) Sqoop
General
1 1 (11.11%) Marketing
Job Titles
1 3 (33.33%) Administrator
2 2 (22.22%) Author
2 2 (22.22%) Linux Administrator
2 2 (22.22%) Technical Author
3 1 (11.11%) Analyst
3 1 (11.11%) Cloud Engineer
3 1 (11.11%) Data Analyst
3 1 (11.11%) Data Scientist
3 1 (11.11%) Developer
3 1 (11.11%) Hadoop Administrator
3 1 (11.11%) Hadoop Developer
3 1 (11.11%) Linux Engineer
3 1 (11.11%) Linux Systems Administrator
3 1 (11.11%) Product Manager
3 1 (11.11%) Software Product Manager
3 1 (11.11%) Systems Administrator
Libraries, Frameworks & Software Standards
1 1 (11.11%) D3.js
1 1 (11.11%) Oracle GoldenGate
1 1 (11.11%) Three.js
Miscellaneous
1 3 (33.33%) Reference Data
2 1 (11.11%) Algorithms
2 1 (11.11%) Data Structures
2 1 (11.11%) User Experience
Operating Systems
1 4 (44.44%) Linux
2 1 (11.11%) Unix
Processes & Methodologies
1 4 (44.44%) Agile Software Development
2 3 (33.33%) Business Intelligence
2 3 (33.33%) Data Management
2 3 (33.33%) ETL
2 3 (33.33%) Master Data Management
3 2 (22.22%) Configuration Management
3 2 (22.22%) Scrum
4 1 (11.11%) Analytics
4 1 (11.11%) Conflict Management
4 1 (11.11%) Data Analysis
4 1 (11.11%) Data Visualisation
4 1 (11.11%) Kanban
4 1 (11.11%) MapReduce
4 1 (11.11%) Market Research
4 1 (11.11%) Marketing Strategy
4 1 (11.11%) Mathematics
4 1 (11.11%) Statistical Modelling
4 1 (11.11%) Statistics
4 1 (11.11%) Visualisation
Programming Languages
1 3 (33.33%) Python
2 2 (22.22%) Bash Shell
2 2 (22.22%) Java
3 1 (11.11%) MATLAB
3 1 (11.11%) R
3 1 (11.11%) Shell Script
3 1 (11.11%) SQL
Qualifications
1 1 (11.11%) Degree
System Software
1 1 (11.11%) Apache Flume
Systems Management
1 2 (22.22%) Ansible
1 2 (22.22%) Opscode Chef
1 2 (22.22%) Puppet
Vendors
1 4 (44.44%) Oracle
2 2 (22.22%) Hortonworks
3 1 (11.11%) Cloudera
3 1 (11.11%) MapR