Period
to 20 June 2018

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 20 June 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
Central London > City of London
6 months to
20 Jun 2018
Same period 2017 Same period 2016
Rank 206 156 172
Rank change year-on-year -50 +16 +47
Contract jobs citing Data Structures 48 78 58
As % of all contract IT jobs advertised in the City of London 0.69% 1.26% 0.88%
As % of the Miscellaneous category 1.61% 3.10% 2.20%
Number of daily rates quoted 39 53 52
City of London median daily rate £500 £475 £600
Median daily rate % change year-on-year +5.26% -20.83% +9.09%
10th Percentile £370 £308 £376
90th Percentile £655 £638 £738
Central London median daily rate £500 £475 £600
% change year-on-year +5.26% -20.83% +14.29%
Number of hourly rates quoted 0 0 2
City of London median hourly rate - - £32.00
Central London median hourly rate - - £32.00

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 the City of London with a requirement for generic IT skills.

All Generic IT Skills
City of London
Contract vacancies with a requirement for generic IT skills 2,987 2,515 2,632
As % of all contract IT jobs advertised in the City of London 43.22% 40.52% 39.85%
Number of daily rates quoted 2,315 1,909 2,138
City of London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £319 £307 £294
90th Percentile £717 £675 £675
Central London median daily rate £525 £500 £473
% change year-on-year +5.00% +5.82% +5.00%
Number of hourly rates quoted 52 23 44
City of London median hourly rate £20.63 £18.70 £19.00
Median hourly rate % change year-on-year +10.29% -1.58% -7.07%
10th Percentile £12.57 £12.51 £11.25
90th Percentile £48.06 £29.77 £45.43
Central London median hourly rate £20.00 £16.50 £19.00
% change year-on-year +21.21% -13.16% -7.07%

Data Structures
Job Vacancy Trend in the City of London

Job postings citing Data Structures as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Data Structures in the City of London

Data Structures
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Data Structures in the City of London

Data Structures
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Data Structures in the City of London over the 6 months to 20 June 2018.

Contractor daily rate histogram for Data Structures in the City of London

Data Structures
Contractor Hourly Rate Trend in the City of London

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

Contractor hourly rate trend for Data Structures in the City of London

Data Structures
Contract Job Locations in the City of London

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 City of London region over the 6 months to 20 June 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
Moorgate - 2 £450 -
Data Structures
Central London

For the 6 months to 20 June 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 City of London region with a requirement for Data Structures.

1 21 (43.75%) Agile Software Development
2 20 (41.67%) Java
3 15 (31.25%) Algorithms
4 11 (22.92%) Python
4 11 (22.92%) Banking
5 10 (20.83%) OO
5 10 (20.83%) SQL
5 10 (20.83%) Big Data
6 9 (18.75%) Problem-Solving
6 9 (18.75%) Low Latency
6 9 (18.75%) Computer Science
6 9 (18.75%) Degree
6 9 (18.75%) Finance
7 8 (16.67%) Data Modelling
7 8 (16.67%) Amazon AWS
7 8 (16.67%) Analytics
7 8 (16.67%) Java 8
8 7 (14.58%) Apache Spark
8 7 (14.58%) ETL
8 7 (14.58%) HTML
8 7 (14.58%) TDD
9 6 (12.50%) Front Office
9 6 (12.50%) JavaScript
9 6 (12.50%) SQL Server
9 6 (12.50%) Web Services
9 6 (12.50%) CSS
9 6 (12.50%) SAS
9 6 (12.50%) Docker
9 6 (12.50%) DevOps
9 6 (12.50%) Open Source

Data Structures
Co-occurring IT Skills in the City of London 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 (14.58%) Apache Spark
2 6 (12.50%) SAS
3 3 (6.25%) Apache Solr
3 3 (6.25%) SharePoint
4 2 (4.17%) Elasticsearch
5 1 (2.08%) Apache
5 1 (2.08%) Apache Pig
5 1 (2.08%) Confluence
5 1 (2.08%) Ethereum
5 1 (2.08%) Tomcat
Applications
1 1 (2.08%) Microsoft Excel
1 1 (2.08%) MS Visio
Business Applications
1 1 (2.08%) Dynamics NAV
1 1 (2.08%) Markit EDM
Cloud Services
1 8 (16.67%) Amazon AWS
2 5 (10.42%) Microsoft Azure
3 2 (4.17%) AdWords
3 2 (4.17%) Google Cloud Platform
4 1 (2.08%) Amazon S3
4 1 (2.08%) Google Analytics
4 1 (2.08%) npm
Communications & Networking
1 1 (2.08%) Multicast
Database & Business Intelligence
1 10 (20.83%) Big Data
2 6 (12.50%) SQL Server
3 5 (10.42%) Relational Database
4 4 (8.33%) NoSQL
5 3 (6.25%) BusinessObjects
5 3 (6.25%) Hadoop
5 3 (6.25%) MySQL
5 3 (6.25%) Pentaho
5 3 (6.25%) Star Schema
6 2 (4.17%) Apache Hive
6 2 (4.17%) Blockchain
6 2 (4.17%) Data Warehouse
6 2 (4.17%) Flink
6 2 (4.17%) ObjectStore
6 2 (4.17%) OLAP
6 2 (4.17%) Oracle Database
6 2 (4.17%) PostgreSQL
6 2 (4.17%) Power BI
6 2 (4.17%) Redis
6 2 (4.17%) SAS Visual Analytics
Development Applications
1 5 (10.42%) JUnit
2 4 (8.33%) Grunt
2 4 (8.33%) gulp
2 4 (8.33%) Jasmine
2 4 (8.33%) JIRA
2 4 (8.33%) PhantomJS
2 4 (8.33%) webpack
3 3 (6.25%) Git (software)
4 2 (4.17%) Jenkins
4 2 (4.17%) TestNG
5 1 (2.08%) CA Release Automation
5 1 (2.08%) Eclipse
5 1 (2.08%) Gradle
5 1 (2.08%) HP UFT
5 1 (2.08%) IntelliJ
5 1 (2.08%) NetBeans
5 1 (2.08%) PyCharm
5 1 (2.08%) Selenium
5 1 (2.08%) Subversion
5 1 (2.08%) Team Foundation Server
General
1 11 (22.92%) Banking
2 9 (18.75%) Finance
3 6 (12.50%) Front Office
4 4 (8.33%) Investment Banking
5 3 (6.25%) Games
6 2 (4.17%) Marketing
7 1 (2.08%) Back Office
7 1 (2.08%) Billing
7 1 (2.08%) Legal
7 1 (2.08%) Retail
Job Titles
1 25 (52.08%) Developer
2 10 (20.83%) Data Engineer
2 10 (20.83%) Java Developer
3 9 (18.75%) Analyst
4 5 (10.42%) Front End Developer (Client-Side Developer)
4 5 (10.42%) Python Engineer
5 4 (8.33%) React Developer
6 3 (6.25%) Big Data Engineer
6 3 (6.25%) Business Analyst
6 3 (6.25%) Front Office Developer
6 3 (6.25%) Java Engineer
6 3 (6.25%) SQL Analyst
7 2 (4.17%) Java Software Engineer
7 2 (4.17%) Senior Analyst
7 2 (4.17%) Senior Developer
7 2 (4.17%) Senior Test Analyst
7 2 (4.17%) Software Development Engineer
7 2 (4.17%) Software Engineer
7 2 (4.17%) Technical Analyst
7 2 (4.17%) Test Analyst
Libraries, Frameworks & Software Standards
1 7 (14.58%) HTML
2 6 (12.50%) CSS
2 6 (12.50%) Redux
2 6 (12.50%) Web Services
3 4 (8.33%) HTML5
3 4 (8.33%) Jest
3 4 (8.33%) REST
3 4 (8.33%) Sass
4 3 (6.25%) Kafka
4 3 (6.25%) LESS
5 2 (4.17%) Ajax
5 2 (4.17%) AngularJS
5 2 (4.17%) Elastic Stack
5 2 (4.17%) jQuery
5 2 (4.17%) JSON
5 2 (4.17%) React
5 2 (4.17%) RESTful
5 2 (4.17%) Twitter Bootstrap
5 2 (4.17%) XML
6 1 (2.08%) .NET Framework
Miscellaneous
1 15 (31.25%) Algorithms
2 9 (18.75%) Computer Science
3 4 (8.33%) Analytical Skills
3 4 (8.33%) Equities
3 4 (8.33%) Mobile App
4 3 (6.25%) Foreign Exchange (FX)
4 3 (6.25%) User Experience
5 2 (4.17%) Fintech
5 2 (4.17%) Greenfield Project
5 2 (4.17%) LIMS
5 2 (4.17%) Management Information System
6 1 (2.08%) Bitcoin
6 1 (2.08%) Data Centre
6 1 (2.08%) Hedge funds
6 1 (2.08%) Self-Motivation
6 1 (2.08%) Taxonomies
Operating Systems
1 2 (4.17%) Linux
2 1 (2.08%) Unix
Processes & Methodologies
1 21 (43.75%) Agile Software Development
2 10 (20.83%) OO
3 9 (18.75%) Low Latency
3 9 (18.75%) Problem-Solving
4 8 (16.67%) Analytics
4 8 (16.67%) Data Modelling
5 7 (14.58%) ETL
5 7 (14.58%) TDD
6 6 (12.50%) Continuous Deployment
6 6 (12.50%) DevOps
6 6 (12.50%) Open Source
6 6 (12.50%) SDLC
7 5 (10.42%) Data Science
7 5 (10.42%) Front End Development
7 5 (10.42%) Test Automation
8 4 (8.33%) Build Automation
8 4 (8.33%) Continuous Integration
8 4 (8.33%) Data Transformation
8 4 (8.33%) Rapid Prototyping
8 4 (8.33%) Stakeholder Management
Programming Languages
1 20 (41.67%) Java
2 11 (22.92%) Python
3 10 (20.83%) SQL
4 8 (16.67%) Java 8
5 6 (12.50%) JavaScript
6 5 (10.42%) C#
7 3 (6.25%) PowerShell
7 3 (6.25%) T-SQL
8 2 (4.17%) C
8 2 (4.17%) Scala
9 1 (2.08%) C++
9 1 (2.08%) ES6
9 1 (2.08%) Groovy
9 1 (2.08%) HiveQL
9 1 (2.08%) PL/SQL
9 1 (2.08%) R
9 1 (2.08%) Shell Script
Qualifications
1 9 (18.75%) Degree
2 2 (4.17%) Computer Science Degree
2 2 (4.17%) Numerate Degree
3 1 (2.08%) HND
3 1 (2.08%) PhD
Quality Assurance & Compliance
1 3 (6.25%) Data Quality
2 2 (4.17%) GCP
2 2 (4.17%) GDPR
2 2 (4.17%) IFRS
2 2 (4.17%) IFRS 9
System Software
1 6 (12.50%) Docker
Systems Management
1 5 (10.42%) Opscode Chef
2 3 (6.25%) Kibana
3 2 (4.17%) logstash
4 1 (2.08%) Puppet
Vendors
1 5 (10.42%) Oracle
2 4 (8.33%) Microsoft
3 3 (6.25%) Hitachi
4 2 (4.17%) Atlassian
4 2 (4.17%) Salesforce.com
4 2 (4.17%) Tableau
5 1 (2.08%) CA Agile Central
5 1 (2.08%) Cloudera
5 1 (2.08%) Google
5 1 (2.08%) IBM
5 1 (2.08%) Maconomy
5 1 (2.08%) Splunk
5 1 (2.08%) Talend
5 1 (2.08%) Teradata