Period
to 20 February 2018

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in Hertfordshire. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 20 February 2018 with a comparison to the same period over 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.

Data Structures
East of England > Hertfordshire
6 months to
20 Feb 2018
Same period 2017 Same period 2016
Rank 91 74 84
Rank change year-on-year -17 +10 -3
Contract jobs citing Data Structures 12 25 6
As % of all contract IT jobs advertised in Hertfordshire 0.77% 1.87% 0.44%
As % of the Miscellaneous category 2.25% 5.84% 1.60%
Number of daily rates quoted 7 23 1
Hertfordshire median daily rate £575 £600 £250
Median daily rate % change year-on-year -4.17% +140.00% -26.47%
10th Percentile £398 £459 £225
90th Percentile £600 £733 £275
East of England median daily rate £463 £550 £425
% change year-on-year -15.91% +29.41% +21.43%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate - - -

Data Structures is in the Generic IT Skills 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 generic IT skills.

All Generic IT Skills
Hertfordshire
Contract vacancies with a requirement for generic IT skills 534 428 376
As % of all contract IT jobs advertised in Hertfordshire 34.47% 32.06% 27.85%
Number of daily rates quoted 271 228 182
Hertfordshire median daily rate £400 £375 £400
Median daily rate % change year-on-year +6.67% -6.25% +6.67%
10th Percentile £213 £154 £228
90th Percentile £569 £575 £500
East of England median daily rate £419 £350 £398
% change year-on-year +19.64% -11.95% +6.00%
Number of hourly rates quoted 20 21 47
Hertfordshire median hourly rate £14.50 £13.00 £21.50
Median hourly rate % change year-on-year +11.54% -39.53% -
10th Percentile £12.38 £10.50 £11.55
90th Percentile £47.50 £47.50 £37.50
East of England median hourly rate £26.50 £32.95 £22.38
% change year-on-year -19.58% +47.26% +19.33%

Data Structures
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for Data Structures in Hertfordshire

Data Structures
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for Data Structures in Hertfordshire

Data Structures
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing Data Structures in Hertfordshire over the 6 months to 20 February 2018.

Contractor daily rate histogram for Data Structures in Hertfordshire

Data Structures
Contractor Hourly Rate Trend in Hertfordshire

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Data Structures in Hertfordshire.

Contractor hourly rate trend for Data Structures in Hertfordshire

Data Structures
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 Data Structures within the Hertfordshire region over the 6 months to 20 February 2018. 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
Stevenage - 2 - -
Welwyn Garden City -11 1 - -
Data Structures
East of England

For the 6 months to 20 February 2018, IT contractor jobs citing Data Structures also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the Hertfordshire region with a requirement for Data Structures.

1 10 (83.33%) Python
1 10 (83.33%) Algorithms
2 9 (75.00%) Mathematical Modelling
2 9 (75.00%) Data Science
2 9 (75.00%) Java
2 9 (75.00%) Mathematics
2 9 (75.00%) Scala
2 9 (75.00%) R
2 9 (75.00%) Big Data
3 7 (58.33%) Retail
3 7 (58.33%) Machine Learning
4 6 (50.00%) Git (software)
4 6 (50.00%) Apache Spark
4 6 (50.00%) Apache Pig
4 6 (50.00%) MapReduce
4 6 (50.00%) Open Source
4 6 (50.00%) Apache Hive
4 6 (50.00%) Hadoop
5 4 (33.33%) Visualisation
5 4 (33.33%) Computer Science
5 4 (33.33%) Degree
5 4 (33.33%) Numerate Degree
6 2 (16.67%) Data Protection
6 2 (16.67%) Security Cleared
6 2 (16.67%) GIS
6 2 (16.67%) ESRI
6 2 (16.67%) Mapinfo
7 1 (8.33%) SAP
7 1 (8.33%) Linux
7 1 (8.33%) E-Commerce

Data Structures
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 6 (50.00%) Apache Pig
1 6 (50.00%) Apache Spark
Communications & Networking
1 1 (8.33%) HTTP
1 1 (8.33%) SMTP
1 1 (8.33%) TCP/IP
Database & Business Intelligence
1 9 (75.00%) Big Data
2 6 (50.00%) Apache Hive
2 6 (50.00%) Hadoop
3 2 (16.67%) GIS
4 1 (8.33%) BusinessObjects
4 1 (8.33%) BusinessObjects Web Intelligence
Development Applications
1 6 (50.00%) Git (software)
General
1 7 (58.33%) Retail
Job Titles
1 9 (75.00%) Data Scientist
2 2 (16.67%) Analyst
3 1 (8.33%) Developer
3 1 (8.33%) Information Analyst
3 1 (8.33%) Linux Developer
3 1 (8.33%) Python Developer
Miscellaneous
1 10 (83.33%) Algorithms
2 4 (33.33%) Computer Science
3 1 (8.33%) Analytical Mindset
3 1 (8.33%) Analytical Skills
Operating Systems
1 1 (8.33%) Linux
Processes & Methodologies
1 9 (75.00%) Data Science
1 9 (75.00%) Mathematical Modelling
1 9 (75.00%) Mathematics
2 7 (58.33%) Machine Learning
3 6 (50.00%) MapReduce
3 6 (50.00%) Open Source
4 4 (33.33%) Visualisation
5 2 (16.67%) Data Protection
6 1 (8.33%) Cryptography
6 1 (8.33%) E-Commerce
6 1 (8.33%) Exploratory Analysis
6 1 (8.33%) Logistics
Programming Languages
1 10 (83.33%) Python
2 9 (75.00%) Java
2 9 (75.00%) R
2 9 (75.00%) Scala
3 1 (8.33%) C
Qualifications
1 4 (33.33%) Degree
1 4 (33.33%) Numerate Degree
2 2 (16.67%) Security Cleared
Vendors
1 2 (16.67%) ESRI
1 2 (16.67%) Mapinfo
2 1 (8.33%) SAP