Period
to 19 November 2017

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 6 months to 19 November 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
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 91 89 94
Rank change year-on-year -2 +5 +11
Contract jobs citing Big Data 13 3 12
As % of all contract IT jobs advertised in Hertfordshire 0.84% 0.22% 0.74%
As % of the Database & Business Intelligence category 4.30% 1.00% 3.64%
Number of daily rates quoted 1 2 3
Hertfordshire median daily rate £575 £425 £500
Median daily rate % change year-on-year +35.29% -15.00% -4.76%
10th Percentile £563 £373 £455
90th Percentile £588 £478 £545
East of England median daily rate £488 £375 £500
% change year-on-year +30.00% -25.00% +17.65%
Number of hourly rates quoted 0 0 1
Hertfordshire median hourly rate - - £62.50
East of England median hourly rate £17.50 £42.92 £54.50
% change year-on-year -59.23% -21.25% -

Big Data is in the Databases and Business Intelligence category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for database or business intelligence skills.

All Database and Business Intelligence Skills
Hertfordshire
Contract vacancies with a requirement for database or business intelligence skills 302 301 330
As % of all contract IT jobs advertised in Hertfordshire 19.47% 21.80% 20.32%
Number of daily rates quoted 169 178 167
Hertfordshire median daily rate £425 £400 £375
Median daily rate % change year-on-year +6.25% +6.67% +5.63%
10th Percentile £311 £263 £246
90th Percentile £576 £529 £530
East of England median daily rate £400 £375 £375
% change year-on-year +6.67% - -
Number of hourly rates quoted 4 2 7
Hertfordshire median hourly rate £18.25 £28.54 £15.00
Median hourly rate % change year-on-year -36.05% +90.27% -25.00%
10th Percentile £15.38 £14.96 £11.25
90th Percentile £19.00 £41.75 £48.00
East of England median hourly rate £29.50 £37.50 £32.00
% change year-on-year -21.33% +17.19% +12.28%

Big Data
Job Vacancy Trend in Hertfordshire

Job postings citing Big Data as a percentage of all IT jobs advertised in Hertfordshire.

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
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 6 months to 19 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Welwyn Garden City +7 6 - - 5
Watford -1 5 - -
Stevenage - 1 - -
Welwyn - 1 £575 -
Big Data
East of England

For the 6 months to 19 November 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 7 (53.85%) SQL
1 7 (53.85%) SQL Server
1 7 (53.85%) Data Modelling
1 7 (53.85%) Agile Software Development
1 7 (53.85%) Amazon AWS
1 7 (53.85%) Analytics
1 7 (53.85%) Apache Spark
2 5 (38.46%) Finance
3 4 (30.77%) Retail
3 4 (30.77%) Python
3 4 (30.77%) Data Warehouse
3 4 (30.77%) Business Intelligence
3 4 (30.77%) T-SQL
3 4 (30.77%) Amazon Redshift
3 4 (30.77%) R
3 4 (30.77%) Machine Learning
3 4 (30.77%) Predictive Modelling
3 4 (30.77%) Hadoop
3 4 (30.77%) SQL Server Reporting Services
3 4 (30.77%) SQL Server Integration Services
3 4 (30.77%) Statistics
3 4 (30.77%) Predictive Analytics
3 4 (30.77%) Mathematics
3 4 (30.77%) Continuous Integration
3 4 (30.77%) Power BI
3 4 (30.77%) Data Lake
3 4 (30.77%) Mathematical Modelling
4 3 (23.08%) Creative Thinking
4 3 (23.08%) Spring Cloud
4 3 (23.08%) Relational Database

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 7 (53.85%) Apache Spark
Cloud Services
1 7 (53.85%) Amazon AWS
2 1 (7.69%) Amazon EC2
Communications & Networking
1 1 (7.69%) Firewall
1 1 (7.69%) Skype
Database & Business Intelligence
1 7 (53.85%) SQL Server
2 4 (30.77%) Amazon Redshift
2 4 (30.77%) Data Lake
2 4 (30.77%) Data Warehouse
2 4 (30.77%) Hadoop
2 4 (30.77%) Power BI
2 4 (30.77%) SQL Server Integration Services
2 4 (30.77%) SQL Server Reporting Services
3 3 (23.08%) Apache Cassandra
3 3 (23.08%) NoSQL
3 3 (23.08%) OLAP
3 3 (23.08%) OLAP Cube
3 3 (23.08%) RDBMS
3 3 (23.08%) Relational Database
3 3 (23.08%) SQL Server Analysis Services
Development Applications
1 3 (23.08%) Visual Studio
General
1 5 (38.46%) Finance
2 4 (30.77%) Retail
3 1 (7.69%) Banking
3 1 (7.69%) Manufacturing
3 1 (7.69%) Telecoms
Job Titles
1 7 (53.85%) Developer
2 4 (30.77%) Analyst
2 4 (30.77%) Business Intelligence Developer
2 4 (30.77%) Data Scientist
3 3 (23.08%) Analyst Developer
3 3 (23.08%) Business Intelligence Analyst
3 3 (23.08%) Database Developer
3 3 (23.08%) Developer Analyst
4 1 (7.69%) Big Data Analyst
4 1 (7.69%) Business Analyst
4 1 (7.69%) Coordinator
4 1 (7.69%) Data Business Analyst
4 1 (7.69%) Project Analyst
4 1 (7.69%) Project Coordinator
4 1 (7.69%) Project Manager
4 1 (7.69%) SC Cleared Project Manager
Libraries, Frameworks & Software Standards
1 3 (23.08%) .NET
1 3 (23.08%) RESTful
1 3 (23.08%) Spark Streaming
1 3 (23.08%) Spring Cloud
1 3 (23.08%) Web Services
Operating Systems
1 1 (7.69%) Windows
Processes & Methodologies
1 7 (53.85%) Agile Software Development
1 7 (53.85%) Analytics
1 7 (53.85%) Data Modelling
2 4 (30.77%) Business Intelligence
2 4 (30.77%) Continuous Integration
2 4 (30.77%) Machine Learning
2 4 (30.77%) Mathematical Modelling
2 4 (30.77%) Mathematics
2 4 (30.77%) Predictive Analytics
2 4 (30.77%) Predictive Modelling
2 4 (30.77%) Statistics
3 3 (23.08%) BDD
3 3 (23.08%) Creative Thinking
3 3 (23.08%) Data Analytics
3 3 (23.08%) ETL
3 3 (23.08%) Kimball Methodology
3 3 (23.08%) Loose Coupling
3 3 (23.08%) Microservices
3 3 (23.08%) TDD
3 3 (23.08%) Workflow
Programming Languages
1 7 (53.85%) SQL
2 4 (30.77%) Python
2 4 (30.77%) R
2 4 (30.77%) T-SQL
3 3 (23.08%) C#
3 3 (23.08%) VB.NET
Qualifications
1 1 (7.69%) SC Cleared
1 1 (7.69%) Security Cleared
Quality Assurance & Compliance
1 3 (23.08%) QA
Vendors
1 3 (23.08%) Tableau
2 1 (7.69%) Microsoft