Period
to 14 August 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 14 August 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
14 Aug 2018
Same period 2017 Same period 2016
Rank 91 89 80
Rank change year-on-year -2 -9 +32
Contract jobs citing Data Structures 6 3 8
As % of all contract IT jobs advertised in Hertfordshire 0.38% 0.23% 0.55%
As % of the Miscellaneous category 1.39% 0.66% 1.60%
Number of daily rates quoted 4 3 3
Hertfordshire median daily rate £613 £600 £475
Median daily rate % change year-on-year +2.08% +26.32% +18.75%
10th Percentile £600 £385 £463
90th Percentile £664 £708 £488
East of England median daily rate £525 £336 £400
% change year-on-year +56.13% -15.94% -
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £45.00 - £25.00

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 431 454 500
As % of all contract IT jobs advertised in Hertfordshire 27.63% 35.22% 34.67%
Number of daily rates quoted 246 230 258
Hertfordshire median daily rate £400 £375 £400
Median daily rate % change year-on-year +6.67% -6.25% +6.67%
10th Percentile £206 £152 £210
90th Percentile £594 £575 £517
East of England median daily rate £450 £400 £390
% change year-on-year +12.50% +2.56% +4.00%
Number of hourly rates quoted 23 32 15
Hertfordshire median hourly rate £31.50 £16.00 £16.00
Median hourly rate % change year-on-year +96.88% - -50.77%
10th Percentile £13.60 £10.55 £10.68
90th Percentile £51.00 £46.50 £24.20
East of England median hourly rate £20.45 £18.00 £19.00
% change year-on-year +13.61% -5.26% -36.67%

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 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 14 August 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
Welwyn Garden City - 1 - -
Data Structures
East of England

For the 6 months to 14 August 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 5 (83.33%) Git (software)
2 4 (66.67%) Mathematics
2 4 (66.67%) Open Source
2 4 (66.67%) Hadoop
2 4 (66.67%) Apache Hive
2 4 (66.67%) Python
2 4 (66.67%) Machine Learning
2 4 (66.67%) Big Data
2 4 (66.67%) Apache Pig
2 4 (66.67%) Apache Spark
2 4 (66.67%) Algorithms
2 4 (66.67%) MapReduce
2 4 (66.67%) Mathematical Modelling
2 4 (66.67%) Data Science
3 3 (50.00%) Retail
4 2 (33.33%) Java
4 2 (33.33%) Degree
4 2 (33.33%) R
4 2 (33.33%) Visualisation
4 2 (33.33%) Computer Science
4 2 (33.33%) Oracle
4 2 (33.33%) Scala
4 2 (33.33%) Numerate Degree
5 1 (16.67%) Oracle SOA Suite
5 1 (16.67%) Oracle Database 12c
5 1 (16.67%) Oracle Database
5 1 (16.67%) Performance Tuning
5 1 (16.67%) Oracle Assets
5 1 (16.67%) Test Automation
5 1 (16.67%) Unit Testing

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 4 (66.67%) Apache Pig
1 4 (66.67%) Apache Spark
2 1 (16.67%) Oracle Service Bus
2 1 (16.67%) Oracle SOA Suite
Business Applications
1 1 (16.67%) Oracle Assets
Cloud Services
1 1 (16.67%) PaaS
1 1 (16.67%) SaaS
Database & Business Intelligence
1 4 (66.67%) Apache Hive
1 4 (66.67%) Big Data
1 4 (66.67%) Hadoop
2 1 (16.67%) Oracle Database
2 1 (16.67%) Oracle Database 12c
Development Applications
1 5 (83.33%) Git (software)
2 1 (16.67%) JIRA
General
1 3 (50.00%) Retail
2 1 (16.67%) Finance
Job Titles
1 4 (66.67%) Data Scientist
2 2 (33.33%) Senior Data Scientist
3 1 (16.67%) Analyst
3 1 (16.67%) Consultant
3 1 (16.67%) Data Analyst
3 1 (16.67%) Data Modeller
3 1 (16.67%) Machine Learning Scientist
3 1 (16.67%) Oracle Consultant
Miscellaneous
1 4 (66.67%) Algorithms
2 2 (33.33%) Computer Science
3 1 (16.67%) FMCG
Processes & Methodologies
1 4 (66.67%) Data Science
1 4 (66.67%) Machine Learning
1 4 (66.67%) MapReduce
1 4 (66.67%) Mathematical Modelling
1 4 (66.67%) Mathematics
1 4 (66.67%) Open Source
2 2 (33.33%) Visualisation
3 1 (16.67%) BPEL
3 1 (16.67%) Data Analysis
3 1 (16.67%) Data Cleansing
3 1 (16.67%) Data Migration
3 1 (16.67%) Data Modelling
3 1 (16.67%) ERP
3 1 (16.67%) Migration
3 1 (16.67%) Performance Tuning
3 1 (16.67%) Requirements Analysis
3 1 (16.67%) SOA
3 1 (16.67%) Stakeholder Management
3 1 (16.67%) Test Automation
3 1 (16.67%) Unit Testing
Programming Languages
1 4 (66.67%) Python
2 2 (33.33%) Java
2 2 (33.33%) R
2 2 (33.33%) Scala
3 1 (16.67%) PL/SQL
3 1 (16.67%) Ruby
3 1 (16.67%) SQL
Qualifications
1 2 (33.33%) Degree
1 2 (33.33%) Numerate Degree
Vendors
1 2 (33.33%) Oracle