The following table provides summary statistics for contract job vacancies advertised in Watford 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 June 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.

Big Data
Hertfordshire / Watford
3 months to
22 Jun 2017
Same period 2016 Same period 2015
Rank 28 22 27
Rank change year-on-year -6 +5  
Contract jobs citing Big Data 1 1 3
As % of all contract IT jobs advertised in Watford 0.63% 0.72% 1.89%
As % of the Database & Business Intelligence category 3.70% 3.57% 6.52%
Number of daily rates quoted 0 1 0
Median daily rate - £375 -
UK excluding London median daily rate £430 £450 £475
% change year-on-year -4.44% -5.26%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £50.00 - £16.00

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 Watford with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
Watford
Contract job vacancies with a requirement for database and business intelligence skills 27 28 46
As % of all contract IT job vacancies advertised in Watford 16.98% 20.29% 28.93%
Number of daily rates quoted 19 10 14
Median daily rate £350 £388 £360
Median daily rate % change year-on-year -9.67% +7.63%  
90% offered a daily rate of more than £250 £375 £225
10% offered a daily rate of more than £500 £460 £480
UK excluding London median daily rate £400 £388 £351
% change year-on-year +3.22% +10.55%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £38.00 £31.27 £26.75
% change year-on-year +21.52% +16.89%  

Big Data
Job Vacancy Trend in Watford

The job posting trend of jobs advertised in Watford 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 Watford

Big Data
Contractor Daily Rate Trend in Watford

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

Contractor daily rate trend for Big Data in Watford

For the 6 months to 22 June 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 Watford region with a requirement for Big Data.

1 4 (66.67%) Hadoop
2 3 (50.00%) Business Intelligence
2 3 (50.00%) SQL
3 2 (33.33%) Use Case
4 1 (16.67%) Continuous Integration
4 1 (16.67%) Test Automation
4 1 (16.67%) Presales
4 1 (16.67%) Power BI
4 1 (16.67%) Data Lake
4 1 (16.67%) GNU Octave
4 1 (16.67%) Data Centre
4 1 (16.67%) Agile Software Development
4 1 (16.67%) SQL Server Reporting Services
4 1 (16.67%) Neural Network
4 1 (16.67%) Business Analysis
4 1 (16.67%) SQL Server Integration Services
4 1 (16.67%) Logistic Regression
4 1 (16.67%) SciPy
4 1 (16.67%) NumPy
4 1 (16.67%) Apache Cassandra
4 1 (16.67%) NoSQL
4 1 (16.67%) R
4 1 (16.67%) HBase
4 1 (16.67%) Machine Learning
4 1 (16.67%) Data Analytics
4 1 (16.67%) Business Analytics
4 1 (16.67%) Analytics
4 1 (16.67%) Relational Database
4 1 (16.67%) Analytical Skills
4 1 (16.67%) Apache Spark

Big Data
Co-occurring IT Skills in Watford 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 1 (16.67%) Apache Spark
1 1 (16.67%) SAS
Applications
1 1 (16.67%) GNU Octave
Database & Business Intelligence
1 4 (66.67%) Hadoop
2 1 (16.67%) Apache Cassandra
2 1 (16.67%) Data Lake
2 1 (16.67%) Data Warehouse
2 1 (16.67%) HBase
2 1 (16.67%) NoSQL
2 1 (16.67%) Power BI
2 1 (16.67%) RDBMS
2 1 (16.67%) Relational Database
2 1 (16.67%) SQL Server
2 1 (16.67%) SQL Server Integration Services
2 1 (16.67%) SQL Server Reporting Services
Job Titles
1 4 (66.67%) Analyst
1 4 (66.67%) Big Data Analyst
1 4 (66.67%) Business Analyst
1 4 (66.67%) Data Business Analyst
2 2 (33.33%) Data Analyst
3 1 (16.67%) Architect
3 1 (16.67%) Business Intelligence Developer
3 1 (16.67%) CRM Analyst
3 1 (16.67%) CRM Business Analyst
3 1 (16.67%) Data Architect
3 1 (16.67%) Developer
3 1 (16.67%) Enterprise Architect
3 1 (16.67%) Enterprise Data Architect
Libraries, Frameworks & Software Standards
1 1 (16.67%) NumPy
1 1 (16.67%) SciPy
Miscellaneous
1 1 (16.67%) Analytical Skills
1 1 (16.67%) Data Centre
Processes & Methodologies
1 3 (50.00%) Business Intelligence
2 2 (33.33%) Use Case
3 1 (16.67%) Agile Software Development
3 1 (16.67%) Analytics
3 1 (16.67%) Business Analysis
3 1 (16.67%) Business Analytics
3 1 (16.67%) Continuous Integration
3 1 (16.67%) CRM
3 1 (16.67%) Data Analytics
3 1 (16.67%) Data Modelling
3 1 (16.67%) Logistic Regression
3 1 (16.67%) Machine Learning
3 1 (16.67%) Neural Network
3 1 (16.67%) Presales
3 1 (16.67%) Test Automation
Programming Languages
1 3 (50.00%) SQL
2 1 (16.67%) MATLAB
2 1 (16.67%) Python
2 1 (16.67%) R
2 1 (16.67%) T-SQL
Vendors
1 1 (16.67%) Microsoft
1 1 (16.67%) Oracle
1 1 (16.67%) SAP
1 1 (16.67%) Teradata