Period
to 20 June 2018

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in 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
England > London
6 months to
20 Jun 2018
Same period 2017 Same period 2016
Rank 273 267 330
Rank change year-on-year -6 +63 -29
Contract jobs citing Data Structures 436 385 294
As % of all contract IT jobs advertised in London 0.97% 0.97% 0.67%
As % of the Miscellaneous category 2.56% 2.54% 1.79%
Number of daily rates quoted 261 262 208
London median daily rate £550 £475 £500
Median daily rate % change year-on-year +15.79% -5.00% +5.26%
10th Percentile £413 £349 £337
90th Percentile £688 £675 £725
England median daily rate £525 £450 £450
% change year-on-year +16.67% - +5.88%
Number of hourly rates quoted 5 1 9
London median hourly rate £21.00 £30.00 £43.50
Median hourly rate % change year-on-year -30.00% -31.03% +20.83%
10th Percentile £19.40 £30.00 £19.39
90th Percentile £52.05 £30.00 £47.10
England median hourly rate £44.50 £26.25 £35.00
% change year-on-year +69.52% -25.00% +55.56%

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 London with a requirement for generic IT skills.

All Generic IT Skills
London
Contract vacancies with a requirement for generic IT skills 17,019 15,179 16,408
As % of all contract IT jobs advertised in London 37.88% 38.14% 37.52%
Number of daily rates quoted 12,200 10,761 11,769
London median daily rate £500 £500 £465
Median daily rate % change year-on-year - +7.53% +3.33%
10th Percentile £313 £306 £281
90th Percentile £700 £675 £650
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +3.66%
Number of hourly rates quoted 279 236 232
London median hourly rate £22.95 £23.00 £20.00
Median hourly rate % change year-on-year -0.22% +15.00% +1.91%
10th Percentile £13.00 £12.51 £11.50
90th Percentile £50.00 £50.00 £50.88
England median hourly rate £22.50 £19.50 £21.00
% change year-on-year +15.38% -7.14% +16.67%

Data Structures
Job Vacancy Trend in London

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

Job vacancy trend for Data Structures in London

Data Structures
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Data Structures in London

Data Structures
Contractor Daily Rate Histogram in London

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

Contractor daily rate histogram for Data Structures in London

Data Structures
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for Data Structures in London

Data Structures
Contractor Hourly Rate Histogram in London

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

Contractor hourly rate histogram for Data Structures in London

Data Structures
Contract Job Locations in 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 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
Central London -48 95 £500 +5.26% 26
West London -38 12 £550 +15.79% 18
South London -39 9 £525 +36.36% 3
East London -35 2 £602 +28.14% 1
North London +2 1 - - 1
Data Structures
England

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 London region with a requirement for Data Structures.

1 199 (45.64%) Algorithms
2 183 (41.97%) Agile Software Development
3 157 (36.01%) SQL
4 156 (35.78%) Finance
5 155 (35.55%) Java
6 149 (34.17%) OO
7 125 (28.67%) Computer Science
8 113 (25.92%) Python
9 106 (24.31%) JavaScript
10 100 (22.94%) Amazon AWS
11 94 (21.56%) Analytical Skills
12 92 (21.10%) Problem-Solving
13 86 (19.72%) HTML
14 82 (18.81%) Multithreading
15 80 (18.35%) CSS
16 79 (18.12%) Degree
17 77 (17.66%) OOD
18 72 (16.51%) Unix
18 72 (16.51%) TDD
19 69 (15.83%) Linux
20 67 (15.37%) Banking
21 64 (14.68%) Git (software)
22 61 (13.99%) Redux
23 59 (13.53%) User Experience
24 58 (13.30%) C#
25 56 (12.84%) Relational Database
25 56 (12.84%) Machine Learning
26 52 (11.93%) AngularJS
27 51 (11.70%) Analytics
27 51 (11.70%) Big Data

Data Structures
Co-occurring IT Skills in 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 33 (7.57%) Apache Spark
2 14 (3.21%) Apache Pig
2 14 (3.21%) Elasticsearch
3 13 (2.98%) SAS
4 11 (2.52%) Apache
5 9 (2.06%) Confluence
5 9 (2.06%) Tomcat
6 8 (1.83%) SharePoint
7 5 (1.15%) Cloud Foundry
8 4 (0.92%) WebSphere
9 3 (0.69%) Apache Solr
9 3 (0.69%) JBoss
10 2 (0.46%) Ethereum
10 2 (0.46%) Oracle SOA Suite
10 2 (0.46%) WebLogic
11 1 (0.23%) Apache Airflow
11 1 (0.23%) CMS
11 1 (0.23%) Hyperledger
11 1 (0.23%) Jetty
11 1 (0.23%) Luigi
Applications
1 16 (3.67%) Microsoft Excel
2 11 (2.52%) Microsoft Project
3 5 (1.15%) MS Visio
4 2 (0.46%) InVision
5 1 (0.23%) AutoCAD
5 1 (0.23%) Revit
5 1 (0.23%) Spreadsheet
Business Applications
1 10 (2.29%) Markit EDM
2 4 (0.92%) HiPortfolio
2 4 (0.92%) Salesforce.com CRM
3 3 (0.69%) Dynamics NAV
4 2 (0.46%) Dynamics AX
4 2 (0.46%) Dynamics CRM
4 2 (0.46%) NetSuite
4 2 (0.46%) Oracle Assets
4 2 (0.46%) Oracle Payables
4 2 (0.46%) SAP ERP
5 1 (0.23%) Distributed Ledger
5 1 (0.23%) Oracle Cash Management
5 1 (0.23%) Oracle FAH
5 1 (0.23%) Oracle General Ledger
5 1 (0.23%) Oracle Receivables
5 1 (0.23%) Primavera
5 1 (0.23%) R3 Corda
5 1 (0.23%) SAP EWM
5 1 (0.23%) SAP S/4HANA
5 1 (0.23%) Workday HCM
Cloud Services
1 100 (22.94%) Amazon AWS
2 40 (9.17%) GitHub
3 27 (6.19%) Heroku
4 20 (4.59%) Microsoft Azure
5 19 (4.36%) Google Cloud Platform
6 16 (3.67%) Amazon S3
7 15 (3.44%) Google Analytics
8 13 (2.98%) Amazon EC2
9 9 (2.06%) Cloud Computing
9 9 (2.06%) SaaS
10 6 (1.38%) AWS Elastic Beanstalk
10 6 (1.38%) npm
10 6 (1.38%) PaaS
11 4 (0.92%) BrowserStack
11 4 (0.92%) Sauce Labs
12 3 (0.69%) AdWords
13 2 (0.46%) AWS CloudFormation
13 2 (0.46%) Salesforce Service Cloud
14 1 (0.23%) IBM Cloud
14 1 (0.23%) Serverless
Communications & Networking
1 16 (3.67%) TCP/IP
2 8 (1.83%) HTTP
3 6 (1.38%) Kerberos
4 4 (0.92%) HTTPS
4 4 (0.92%) Internet
5 1 (0.23%) DMZ
5 1 (0.23%) Firewall
5 1 (0.23%) Intrusion Detection
5 1 (0.23%) Multicast
5 1 (0.23%) SMS
5 1 (0.23%) VoIP
5 1 (0.23%) VPN
Database & Business Intelligence
1 56 (12.84%) Relational Database
2 51 (11.70%) Big Data
3 38 (8.72%) NoSQL
4 36 (8.26%) Hadoop
4 36 (8.26%) PostgreSQL
5 34 (7.80%) SQL Server
6 33 (7.57%) Data Warehouse
7 28 (6.42%) Apache Hive
7 28 (6.42%) MongoDB
8 19 (4.36%) MySQL
9 18 (4.13%) SQL Server Integration Services
10 17 (3.90%) Amazon Redshift
10 17 (3.90%) BusinessObjects
11 15 (3.44%) Star Schema
12 13 (2.98%) DB2
12 13 (2.98%) Pentaho
12 13 (2.98%) QlikView
13 10 (2.29%) Apache Cassandra
13 10 (2.29%) RDBMS
14 9 (2.06%) MS Access
Development Applications
1 64 (14.68%) Git (software)
2 48 (11.01%) webpack
3 29 (6.65%) JIRA
4 27 (6.19%) PostCSS
5 24 (5.50%) Jenkins
6 20 (4.59%) gulp
6 20 (4.59%) Jasmine
7 19 (4.36%) Grunt
8 17 (3.90%) JUnit
8 17 (3.90%) Subversion
9 13 (2.98%) PhantomJS
10 12 (2.75%) Selenium
11 8 (1.83%) Maven
12 7 (1.61%) Gerrit
13 6 (1.38%) Bitbucket
13 6 (1.38%) Cucumber
13 6 (1.38%) Hudson
13 6 (1.38%) JMeter
13 6 (1.38%) Mocha
14 5 (1.15%) Gradle
General
1 156 (35.78%) Finance
2 67 (15.37%) Banking
3 40 (9.17%) Front Office
4 22 (5.05%) Investment Banking
5 20 (4.59%) Games
6 12 (2.75%) Back Office
7 10 (2.29%) Marketing
8 9 (2.06%) Retail
9 6 (1.38%) Manufacturing
10 4 (0.92%) Legal
10 4 (0.92%) Telecoms
11 2 (0.46%) Advertising
11 2 (0.46%) Electronics
11 2 (0.46%) Financial Institution
11 2 (0.46%) General Ledger
11 2 (0.46%) Private Banking
12 1 (0.23%) Billing
12 1 (0.23%) Mandarin Language
12 1 (0.23%) Retail Banking
12 1 (0.23%) Wholesale Banking
Job Titles
1 285 (65.37%) Developer
2 82 (18.81%) Java Developer
3 50 (11.47%) Analyst
4 40 (9.17%) Python Developer
5 37 (8.49%) Senior Developer
6 35 (8.03%) Data Engineer
7 30 (6.88%) React Developer
8 27 (6.19%) Front End Developer (Client-Side Developer)
9 24 (5.50%) C# Developer
10 23 (5.28%) Python Engineer
11 21 (4.82%) AWS Engineer
11 21 (4.82%) Digital Developer
12 20 (4.59%) JavaScript Developer
13 17 (3.90%) Front Office Developer
13 17 (3.90%) SQL Developer
14 16 (3.67%) Senior Data Engineer
15 15 (3.44%) Senior Python Developer
16 14 (3.21%) Architect
16 14 (3.21%) Business Analyst
17 13 (2.98%) Full Stack Developer
Libraries, Frameworks & Software Standards
1 86 (19.72%) HTML
2 80 (18.35%) CSS
3 61 (13.99%) Redux
4 52 (11.93%) AngularJS
5 45 (10.32%) Web Services
6 41 (9.40%) Spring
7 35 (8.03%) Chai
8 34 (7.80%) Kafka
9 31 (7.11%) React
9 31 (7.11%) REST
10 29 (6.65%) .NET
10 29 (6.65%) HTML5
10 29 (6.65%) Node.js
11 27 (6.19%) Enzyme
12 21 (4.82%) JSON
13 20 (4.59%) Jest
13 20 (4.59%) RESTful
13 20 (4.59%) XML
14 19 (4.36%) SOAP
15 18 (4.13%) jQuery
Miscellaneous
1 199 (45.64%) Algorithms
2 125 (28.67%) Computer Science
3 94 (21.56%) Analytical Skills
4 59 (13.53%) User Experience
5 30 (6.88%) Greenfield Project
6 23 (5.28%) Fintech
7 20 (4.59%) Foreign Exchange (FX)
8 18 (4.13%) Derivative
9 17 (3.90%) Mobile App
10 16 (3.67%) Fixed Income
11 15 (3.44%) Equities
11 15 (3.44%) Hedge funds
12 11 (2.52%) Management Information System
13 10 (2.29%) Reference Data
14 7 (1.61%) Blog
14 7 (1.61%) Enterprise Software
15 6 (1.38%) Public Cloud
16 5 (1.15%) Linux Command Line
16 5 (1.15%) Market Risk
16 5 (1.15%) Self-Motivation
Operating Systems
1 72 (16.51%) Unix
2 69 (15.83%) Linux
3 9 (2.06%) Windows
4 2 (0.46%) Apple iOS
5 1 (0.23%) Android
5 1 (0.23%) Windows 7
Processes & Methodologies
1 183 (41.97%) Agile Software Development
2 149 (34.17%) OO
3 92 (21.10%) Problem-Solving
4 82 (18.81%) Multithreading
5 77 (17.66%) OOD
6 72 (16.51%) TDD
7 56 (12.84%) Machine Learning
8 51 (11.70%) Analytics
8 51 (11.70%) Continuous Integration
8 51 (11.70%) DevOps
8 51 (11.70%) ETL
8 51 (11.70%) Test Automation
9 46 (10.55%) Data Modelling
9 46 (10.55%) SDLC
9 46 (10.55%) Software Engineering
10 33 (7.57%) Business Intelligence
10 33 (7.57%) Data Science
11 30 (6.88%) API Design
11 30 (6.88%) Front End Development
12 28 (6.42%) Open Source
Programming Languages
1 157 (36.01%) SQL
2 155 (35.55%) Java
3 113 (25.92%) Python
4 106 (24.31%) JavaScript
5 58 (13.30%) C#
6 47 (10.78%) ES6
7 45 (10.32%) Scala
8 24 (5.50%) Java 8
9 23 (5.28%) C++
10 22 (5.05%) Perl
11 21 (4.82%) Go
12 15 (3.44%) VBA
13 14 (3.21%) Shell Script
14 13 (2.98%) PL/SQL
14 13 (2.98%) R
15 10 (2.29%) T-SQL
15 10 (2.29%) TypeScript
16 9 (2.06%) C
17 6 (1.38%) Bash Shell
17 6 (1.38%) PHP
Qualifications
1 79 (18.12%) Degree
2 27 (6.19%) Computer Science Degree
3 12 (2.75%) Security Cleared
4 8 (1.83%) Numerate Degree
5 7 (1.61%) Master's Degree
5 7 (1.61%) SC Cleared
6 4 (0.92%) A+ Certification
6 4 (0.92%) PhD
7 3 (0.69%) CTC Cleared
7 3 (0.69%) DBS Check
7 3 (0.69%) ISEB
8 1 (0.23%) BPSS Clearance
8 1 (0.23%) CISA
8 1 (0.23%) CISM
8 1 (0.23%) CISSP
8 1 (0.23%) HND
8 1 (0.23%) MCSE
8 1 (0.23%) Microsoft Certification
8 1 (0.23%) Sun Certification
Quality Assurance & Compliance
1 24 (5.50%) Data Quality
2 10 (2.29%) GDPR
3 6 (1.38%) IFRS
3 6 (1.38%) IFRS 9
4 5 (1.15%) QA
5 4 (0.92%) PMO
6 3 (0.69%) Disclosure Scotland
6 3 (0.69%) SLA
7 2 (0.46%) GCP
8 1 (0.23%) PSD2
System Software
1 40 (9.17%) Docker
2 10 (2.29%) Apache Flume
3 6 (1.38%) Active Directory
4 5 (1.15%) HDFS
5 2 (0.46%) Apache ZooKeeper
5 2 (0.46%) etcd
5 2 (0.46%) Varnish
Systems Management
1 17 (3.90%) Opscode Chef
2 10 (2.29%) Oozie
3 8 (1.83%) Kubernetes
4 4 (0.92%) Kibana
4 4 (0.92%) Puppet
5 3 (0.69%) Ansible
6 2 (0.46%) Consul
6 2 (0.46%) logstash
6 2 (0.46%) Terraform
7 1 (0.23%) CSIRT
7 1 (0.23%) Host Intrusion Detection System
7 1 (0.23%) Network Intrusion Detection System
Vendors
1 43 (9.86%) Oracle
2 36 (8.26%) Google
3 27 (6.19%) Twitter
4 23 (5.28%) Microsoft
5 22 (5.05%) SAP
6 20 (4.59%) Salesforce.com
7 16 (3.67%) Tableau
8 13 (2.98%) Sybase
9 9 (2.06%) IBM
9 9 (2.06%) Informatica
10 8 (1.83%) MicroStrategy
11 7 (1.61%) Atlassian
12 6 (1.38%) Maconomy
13 4 (0.92%) Cypress Semiconductor
13 4 (0.92%) Perfecto Mobile
13 4 (0.92%) Perforce
13 4 (0.92%) Teradata
14 3 (0.69%) CA Agile Central
14 3 (0.69%) Cloudera
14 3 (0.69%) DevExpress