The following table provides summary statistics for contract job vacancies advertised in Hertfordshire 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 25 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
East of England / Hertfordshire
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 54 55 69
Rank change year-on-year +1 +14  
Contract jobs citing Big Data 6 2 5
As % of all contract IT jobs advertised in Hertfordshire 0.96% 0.31% 0.56%
As % of the Database & Business Intelligence category 5.41% 1.74% 2.58%
Number of daily rates quoted 2 2 2
Median daily rate £463 £400 £475
Median daily rate % change year-on-year +15.62% -15.78%  
90% offered a daily rate of more than £393 £380 £455
10% offered a daily rate of more than £533 £420 £495
UK excluding London median daily rate £436 £450 £475
% change year-on-year -3.05% -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 Hertfordshire with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
Hertfordshire
Contract job vacancies with a requirement for database and business intelligence skills 111 115 194
As % of all contract IT job vacancies advertised in Hertfordshire 17.76% 17.83% 21.68%
Number of daily rates quoted 72 64 92
Median daily rate £375 £425 £360
Median daily rate % change year-on-year -11.76% +18.05%  
90% offered a daily rate of more than £251 £288 £300
10% offered a daily rate of more than £500 £475 £500
UK excluding London median daily rate £400 £383 £350
% change year-on-year +4.57% +9.28%  
Number of hourly rates quoted 2 1 1
Median hourly rate £15.00 £12.08 £20.94
Median hourly rate % change year-on-year +24.17% -42.29%  
UK excluding London median hourly rate £38.00 £30.50 £26.00
% change year-on-year +24.59% +17.30%  

Big Data
Job Vacancy Trend in Hertfordshire

The job posting trend of jobs advertised in Hertfordshire 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 Hertfordshire

Big Data
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for Big Data in Hertfordshire

Big Data
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing Big Data in Hertfordshire over the 3 months to 25 June 2017.

Contractor daily rate histogram for Big Data in Hertfordshire

Big Data
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Big Data within the Hertfordshire region over the 3 months to 25 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Hatfield - 3 £463 -
Welwyn Garden City - 2 - -
Watford -4 1 - -
Big Data
East of England

For the 6 months to 25 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 Hertfordshire region with a requirement for Big Data.

1 18 (72.00%) Agile Software Development
2 15 (60.00%) DevOps
3 11 (44.00%) Analytics
4 9 (36.00%) Java
4 9 (36.00%) Data Analytics
4 9 (36.00%) Data Centre
5 8 (32.00%) Database Security
5 8 (32.00%) Programme Delivery
5 8 (32.00%) Information Assurance
5 8 (32.00%) Security Architecture
5 8 (32.00%) Waterfall
5 8 (32.00%) Apache Cassandra
5 8 (32.00%) NoSQL
5 8 (32.00%) Big Data Analytics
5 8 (32.00%) Middleware
5 8 (32.00%) Management Information System
5 8 (32.00%) Risk Management
5 8 (32.00%) TDD
5 8 (32.00%) Information Security
6 7 (28.00%) Spring
6 7 (28.00%) Client/Server
6 7 (28.00%) Unix
6 7 (28.00%) Linux
6 7 (28.00%) OO
6 7 (28.00%) Open Source
6 7 (28.00%) Puppet
6 7 (28.00%) Service Design
6 7 (28.00%) Opscode Chef
6 7 (28.00%) Mentoring
7 6 (24.00%) SQL

Big Data
Co-occurring IT Skills in Hertfordshire 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 (4.00%) Apache Spark
1 1 (4.00%) SAS
Applications
1 2 (8.00%) Microsoft Excel
1 2 (8.00%) Microsoft Office
1 2 (8.00%) Microsoft PowerPoint
2 1 (4.00%) GNU Octave
Cloud Services
1 2 (8.00%) Office 365
Communications & Networking
1 2 (8.00%) Internet
Database & Business Intelligence
1 8 (32.00%) Apache Cassandra
1 8 (32.00%) NoSQL
2 5 (20.00%) Hadoop
3 2 (8.00%) Data Warehouse
3 2 (8.00%) HBase
3 2 (8.00%) SQL Server
3 2 (8.00%) SQL Server Integration Services
3 2 (8.00%) SQL Server Reporting Services
4 1 (4.00%) Apache Hive
4 1 (4.00%) Data Lake
4 1 (4.00%) DTS
4 1 (4.00%) Microsoft Analysis Services
4 1 (4.00%) Power BI
4 1 (4.00%) QlikView
4 1 (4.00%) RDBMS
4 1 (4.00%) Relational Database
4 1 (4.00%) SQL Server 2008
4 1 (4.00%) SQL Server 2012
4 1 (4.00%) SQL Server Analysis Services
General
1 2 (8.00%) Marketing
Job Titles
1 10 (40.00%) Developer
2 8 (32.00%) Applications Consultant
2 8 (32.00%) Consultant
2 8 (32.00%) Java Developer
2 8 (32.00%) Security Consultant
3 5 (20.00%) Senior Developer
3 5 (20.00%) Senior Java Developer
4 4 (16.00%) Analyst
4 4 (16.00%) AWS Developer
4 4 (16.00%) Big Data Analyst
4 4 (16.00%) Business Analyst
4 4 (16.00%) Data Business Analyst
5 3 (12.00%) AWS DevOps
5 3 (12.00%) DevOps Developer
5 3 (12.00%) Test Consultant
6 2 (8.00%) Data Analyst
6 2 (8.00%) Senior DevOps
7 1 (4.00%) SSAS Developer
7 1 (4.00%) SSIS Developer
7 1 (4.00%) SSRS Developer
Libraries, Frameworks & Software Standards
1 8 (32.00%) Middleware
2 7 (28.00%) Spring
3 1 (4.00%) .NET
3 1 (4.00%) NumPy
3 1 (4.00%) SciPy
Miscellaneous
1 9 (36.00%) Data Centre
2 8 (32.00%) Management Information System
3 7 (28.00%) Client/Server
4 2 (8.00%) Credit Risk
5 1 (4.00%) Analytical Skills
Operating Systems
1 7 (28.00%) Linux
1 7 (28.00%) Unix
2 2 (8.00%) Windows
2 2 (8.00%) Windows 10
2 2 (8.00%) Windows 7
2 2 (8.00%) Windows 8
2 2 (8.00%) Windows Server
2 2 (8.00%) Windows Server 2008
3 1 (4.00%) Android
3 1 (4.00%) Apple iOS
Processes & Methodologies
1 18 (72.00%) Agile Software Development
2 15 (60.00%) DevOps
3 11 (44.00%) Analytics
4 9 (36.00%) Data Analytics
5 8 (32.00%) Big Data Analytics
5 8 (32.00%) Database Security
5 8 (32.00%) Information Assurance
5 8 (32.00%) Information Security
5 8 (32.00%) Programme Delivery
5 8 (32.00%) Risk Management
5 8 (32.00%) Security Architecture
5 8 (32.00%) TDD
5 8 (32.00%) Waterfall
6 7 (28.00%) Mentoring
6 7 (28.00%) OO
6 7 (28.00%) Open Source
6 7 (28.00%) Service Design
7 5 (20.00%) Business Intelligence
8 2 (8.00%) Use Case
8 2 (8.00%) Web Analytics
Programming Languages
1 9 (36.00%) Java
2 6 (24.00%) SQL
3 2 (8.00%) T-SQL
4 1 (4.00%) C#
4 1 (4.00%) MATLAB
4 1 (4.00%) Python
4 1 (4.00%) R
Qualifications
1 1 (4.00%) PMP
Quality Assurance & Compliance
1 1 (4.00%) SLA
System Software
1 2 (8.00%) Active Directory
Systems Management
1 7 (28.00%) Opscode Chef
1 7 (28.00%) Puppet
Vendors
1 4 (16.00%) Microsoft
2 1 (4.00%) Oracle
2 1 (4.00%) SAP
2 1 (4.00%) Teradata