The following table provides summary statistics for contract job vacancies advertised in Welwyn Garden City 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 24 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 / Welwyn Garden City
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 11 - -
Rank change year-on-year - 0  
Contract jobs citing Big Data 2 0 0
As % of all contract IT jobs advertised in Welwyn Garden City 3.70% - -
As % of the Database & Business Intelligence category 50.00% - -
Number of daily rates quoted 0 0 0
Median daily rate - - -
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 Welwyn Garden City with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
Welwyn Garden City
Contract job vacancies with a requirement for database and business intelligence skills 4 16 19
As % of all contract IT job vacancies advertised in Welwyn Garden City 7.41% 25.40% 14.96%
Number of daily rates quoted 1 11 8
Median daily rate £225 £288 £310
Median daily rate % change year-on-year -21.73% -7.25%  
UK excluding London median daily rate £400 £383 £350
% change year-on-year +4.57% +9.28%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £38.00 £31.00 £26.00
% change year-on-year +22.58% +19.23%  

Big Data
Job Vacancy Trend in Welwyn Garden City

The job posting trend of jobs advertised in Welwyn Garden City 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 Welwyn Garden City

Big Data
Contractor Daily Rate Trend in Welwyn Garden City

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

Contractor daily rate trend for Big Data in Welwyn Garden City

For the 6 months to 24 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 Welwyn Garden City region with a requirement for Big Data.

1 9 (100.00%) Agile Software Development
1 9 (100.00%) Analytics
2 8 (88.89%) Database Security
2 8 (88.89%) DevOps
2 8 (88.89%) Information Assurance
2 8 (88.89%) Big Data Analytics
2 8 (88.89%) Data Analytics
2 8 (88.89%) Data Centre
2 8 (88.89%) Programme Delivery
2 8 (88.89%) Information Security
2 8 (88.89%) Security Architecture
2 8 (88.89%) Waterfall
2 8 (88.89%) Middleware
2 8 (88.89%) Management Information System
2 8 (88.89%) Risk Management
3 1 (11.11%) Apple iOS
3 1 (11.11%) Continuous Improvement
3 1 (11.11%) Office 365
3 1 (11.11%) Penetration Testing
3 1 (11.11%) Web Analytics
3 1 (11.11%) Microsoft PowerPoint
3 1 (11.11%) Marketing
3 1 (11.11%) Credit Risk
3 1 (11.11%) Android
3 1 (11.11%) Windows Server 2008
3 1 (11.11%) Service Delivery
3 1 (11.11%) ITSM
3 1 (11.11%) C#
3 1 (11.11%) Java
3 1 (11.11%) SQL

Big Data
Co-occurring IT Skills in Welwyn Garden City 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:

Applications
1 1 (11.11%) Microsoft Excel
1 1 (11.11%) Microsoft Office
1 1 (11.11%) Microsoft PowerPoint
Cloud Services
1 1 (11.11%) Office 365
Communications & Networking
1 1 (11.11%) Internet
General
1 1 (11.11%) Marketing
Job Titles
1 8 (88.89%) Applications Consultant
1 8 (88.89%) Consultant
1 8 (88.89%) Security Consultant
2 3 (33.33%) Test Consultant
3 1 (11.11%) Delivery Manager
3 1 (11.11%) Help Desk Manager
3 1 (11.11%) Help Desk Support
3 1 (11.11%) Service Manager
3 1 (11.11%) Service Support Manager
3 1 (11.11%) Services Delivery Manager
Libraries, Frameworks & Software Standards
1 8 (88.89%) Middleware
2 1 (11.11%) .NET
Miscellaneous
1 8 (88.89%) Data Centre
1 8 (88.89%) Management Information System
2 1 (11.11%) Credit Risk
Operating Systems
1 1 (11.11%) Android
1 1 (11.11%) Apple iOS
1 1 (11.11%) Windows
1 1 (11.11%) Windows 10
1 1 (11.11%) Windows 7
1 1 (11.11%) Windows 8
1 1 (11.11%) Windows Server
1 1 (11.11%) Windows Server 2008
Processes & Methodologies
1 9 (100.00%) Agile Software Development
1 9 (100.00%) Analytics
2 8 (88.89%) Big Data Analytics
2 8 (88.89%) Data Analytics
2 8 (88.89%) Database Security
2 8 (88.89%) DevOps
2 8 (88.89%) Information Assurance
2 8 (88.89%) Information Security
2 8 (88.89%) Programme Delivery
2 8 (88.89%) Risk Management
2 8 (88.89%) Security Architecture
2 8 (88.89%) Waterfall
3 1 (11.11%) Business Intelligence
3 1 (11.11%) Continuous Improvement
3 1 (11.11%) ITIL
3 1 (11.11%) ITSM
3 1 (11.11%) Penetration Testing
3 1 (11.11%) PRINCE
3 1 (11.11%) Service Delivery
3 1 (11.11%) Web Analytics
Programming Languages
1 1 (11.11%) C#
1 1 (11.11%) Java
1 1 (11.11%) SQL
Qualifications
1 1 (11.11%) PMP
Quality Assurance & Compliance
1 1 (11.11%) SLA
System Software
1 1 (11.11%) Active Directory
Vendors
1 1 (11.11%) Microsoft