Period
to 22 October 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 22 October 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
22 Oct 2018
Same period 2017 Same period 2016
Rank 250 231 351
Rank change year-on-year -19 +120 -53
Contract jobs citing Data Structures 474 513 301
As % of all contract IT jobs advertised in London 1.03% 1.14% 0.68%
As % of the Miscellaneous category 2.67% 2.88% 1.80%
Number of daily rates quoted 296 370 217
London median daily rate £545 £525 £475
Median daily rate % change year-on-year +3.81% +10.53% -9.52%
10th Percentile £413 £388 £313
90th Percentile £750 £700 £675
England median daily rate £500 £475 £438
% change year-on-year +5.26% +8.57% -7.89%
Number of hourly rates quoted 6 1 0
London median hourly rate £37.09 £28.00 -
Median hourly rate % change year-on-year +32.46% - -
England median hourly rate £40.85 £35.00 £25.00
% change year-on-year +16.70% +40.00% -41.18%

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 17,778 17,815 16,734
As % of all contract IT jobs advertised in London 38.50% 39.53% 37.76%
Number of daily rates quoted 12,827 12,734 11,879
London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £319 £312 £285
90th Percentile £700 £675 £650
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +1.19%
Number of hourly rates quoted 256 222 251
London median hourly rate £22.93 £21.12 £19.03
Median hourly rate % change year-on-year +8.60% +10.96% -4.85%
10th Percentile £13.00 £12.52 £11.25
90th Percentile £51.25 £47.50 £50.00
England median hourly rate £21.50 £20.00 £20.00
% change year-on-year +7.50% - +8.11%

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 22 October 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 22 October 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 22 October 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 -16 126 £500 -4.76% 79
West London -16 16 £563 +18.42% 28
East London -29 9 £575 +22.34% 14
South London -22 4 £400 +5.26% 2
North London - 2 £625 - 1
Data Structures
England

For the 6 months to 22 October 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.

1 238 (50.21%) Algorithms
2 184 (38.82%) Agile Software Development
3 181 (38.19%) OO
4 160 (33.76%) Finance
5 154 (32.49%) Java
6 151 (31.86%) JavaScript
7 140 (29.54%) Computer Science
8 128 (27.00%) SQL
9 123 (25.95%) TDD
10 113 (23.84%) Python
11 111 (23.42%) Amazon AWS
12 107 (22.57%) HTML
13 100 (21.10%) OOD
14 99 (20.89%) CSS
15 98 (20.68%) Git (software)
16 95 (20.04%) Problem-Solving
17 90 (18.99%) Analytical Skills
18 82 (17.30%) C#
19 79 (16.67%) Multithreading
19 79 (16.67%) Degree
20 71 (14.98%) User Experience
21 64 (13.50%) Continuous Integration
22 63 (13.29%) Redux
23 62 (13.08%) Relational Database
24 59 (12.45%) Docker
25 58 (12.24%) Test Automation
25 58 (12.24%) C++
25 58 (12.24%) Linux
26 55 (11.60%) OOP
26 55 (11.60%) Scala

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 25 (5.27%) Apache Spark
2 13 (2.74%) Apache
3 11 (2.32%) Confluence
4 10 (2.11%) Apache Pig
4 10 (2.11%) Elasticsearch
5 6 (1.27%) IPython
6 5 (1.05%) Cloud Foundry
7 4 (0.84%) Apache Solr
7 4 (0.84%) CMS
7 4 (0.84%) IIS
8 3 (0.63%) Ethereum
8 3 (0.63%) SAS
8 3 (0.63%) SharePoint
9 2 (0.42%) Amazon Alexa
9 2 (0.42%) Tomcat
9 2 (0.42%) WebSphere
10 1 (0.21%) Drupal
10 1 (0.21%) GemFire
10 1 (0.21%) WebLogic
10 1 (0.21%) WordPress
Applications
1 18 (3.80%) Microsoft Excel
2 3 (0.63%) Adobe Illustrator
2 3 (0.63%) InVision
2 3 (0.63%) Photoshop
3 2 (0.42%) MS Visio
4 1 (0.21%) Spreadsheet
Business Applications
1 8 (1.69%) SAP Oil and Gas
2 4 (0.84%) Distributed Ledger
2 4 (0.84%) Salesforce.com CRM
2 4 (0.84%) SAP MM
2 4 (0.84%) SAP R/3
3 3 (0.63%) Oracle EBS
3 3 (0.63%) SAP S/4HANA
4 2 (0.42%) Markit EDM
4 2 (0.42%) Oracle Assets
4 2 (0.42%) Oracle Payables
4 2 (0.42%) SAP ERP
5 1 (0.21%) Dynamics CRM
5 1 (0.21%) Dynamics NAV
5 1 (0.21%) Hyperion Planning
5 1 (0.21%) Oracle Cash Management
5 1 (0.21%) Oracle EBS R12
5 1 (0.21%) Oracle FAH
5 1 (0.21%) Oracle General Ledger
5 1 (0.21%) Oracle Receivables
5 1 (0.21%) SAP EWM
Cloud Services
1 111 (23.42%) Amazon AWS
2 45 (9.49%) GitHub
2 45 (9.49%) Microsoft Azure
3 35 (7.38%) Google Cloud Platform
4 24 (5.06%) Heroku
5 12 (2.53%) PaaS
6 9 (1.90%) BrowserStack
6 9 (1.90%) Cloud Computing
6 9 (1.90%) OpenShift
6 9 (1.90%) Sauce Labs
7 8 (1.69%) Amazon S3
8 7 (1.48%) Amazon EC2
8 7 (1.48%) npm
9 6 (1.27%) AWS Elastic Beanstalk
9 6 (1.27%) Google App Engine
9 6 (1.27%) SaaS
10 4 (0.84%) IaaS
11 3 (0.63%) Azure Active Directory
11 3 (0.63%) Google Analytics
11 3 (0.63%) Salesforce Sales Cloud
Communications & Networking
1 21 (4.43%) HTTP
2 12 (2.53%) TCP/IP
3 10 (2.11%) HTTPS
3 10 (2.11%) Internet
4 6 (1.27%) AMQP
4 6 (1.27%) MQTT
5 5 (1.05%) Firewall
6 4 (0.84%) BIG-IP
6 4 (0.84%) Intranet
6 4 (0.84%) NetScaler
7 2 (0.42%) IPFS
8 1 (0.21%) DMZ
8 1 (0.21%) Intrusion Detection
8 1 (0.21%) Kerberos
8 1 (0.21%) VoIP
8 1 (0.21%) VPN
Database & Business Intelligence
1 62 (13.08%) Relational Database
2 43 (9.07%) Data Warehouse
3 37 (7.81%) NoSQL
3 37 (7.81%) PostgreSQL
3 37 (7.81%) SQL Server
4 34 (7.17%) Hadoop
5 32 (6.75%) Big Data
6 27 (5.70%) Apache Hive
7 20 (4.22%) MongoDB
8 19 (4.01%) SQL Server Integration Services
9 15 (3.16%) Power BI
9 15 (3.16%) SQL Server Analysis Services
10 12 (2.53%) Apache Cassandra
11 10 (2.11%) MySQL
11 10 (2.11%) SQL Server Reporting Services
12 9 (1.90%) Blockchain
12 9 (1.90%) BusinessObjects
12 9 (1.90%) Data Lake
13 8 (1.69%) SAP HANA
14 7 (1.48%) Redis
Development Applications
1 98 (20.68%) Git (software)
2 41 (8.65%) Jenkins
3 35 (7.38%) webpack
4 26 (5.49%) PostCSS
5 17 (3.59%) JIRA
6 16 (3.38%) Selenium
7 15 (3.16%) Cucumber
8 14 (2.95%) Bitbucket
8 14 (2.95%) Jasmine
9 13 (2.74%) JMeter
10 12 (2.53%) Hudson
11 11 (2.32%) Subversion
12 10 (2.11%) Gerrit
12 10 (2.11%) JUnit
13 9 (1.90%) Grunt
13 9 (1.90%) gulp
13 9 (1.90%) JBehave
13 9 (1.90%) LoadRunner
13 9 (1.90%) Maven
13 9 (1.90%) WebDriver
General
1 160 (33.76%) Finance
2 50 (10.55%) Banking
3 39 (8.23%) Front Office
4 26 (5.49%) Telecoms
5 13 (2.74%) Games
6 12 (2.53%) Marketing
7 10 (2.11%) Investment Banking
8 9 (1.90%) Legal
9 8 (1.69%) Manufacturing
10 7 (1.48%) Retail
11 5 (1.05%) Back Office
12 4 (0.84%) Advertising
13 3 (0.63%) Financial Institution
13 3 (0.63%) French Language
13 3 (0.63%) General Ledger
13 3 (0.63%) German Language
14 2 (0.42%) Arabic Language
14 2 (0.42%) Electronics
15 1 (0.21%) Automotive
15 1 (0.21%) Pharmaceutical
Job Titles
1 342 (72.15%) Developer
2 78 (16.46%) Java Developer
3 44 (9.28%) Python Developer
3 44 (9.28%) Senior Developer
4 41 (8.65%) React Developer
5 35 (7.38%) C# Developer
6 33 (6.96%) Front End Developer (Client-Side Developer)
7 32 (6.75%) Analyst
8 22 (4.64%) Digital Developer
9 21 (4.43%) Lead Developer
10 19 (4.01%) Data Engineer
10 19 (4.01%) Front Office Developer
11 18 (3.80%) Architect
11 18 (3.80%) Full Stack Developer
12 17 (3.59%) Software Developer
13 16 (3.38%) JavaScript Developer
14 12 (2.53%) Backend Developer
14 12 (2.53%) Node.js Developer
14 12 (2.53%) Senior Java Developer
15 11 (2.32%) SQL Developer
Libraries, Frameworks & Software Standards
1 107 (22.57%) HTML
2 99 (20.89%) CSS
3 63 (13.29%) Redux
4 55 (11.60%) AngularJS
5 51 (10.76%) REST
6 48 (10.13%) Node.js
7 42 (8.86%) .NET
7 42 (8.86%) HTML5
8 39 (8.23%) React
9 37 (7.81%) Web Services
10 34 (7.17%) Chai
10 34 (7.17%) Kafka
11 32 (6.75%) jQuery
12 30 (6.33%) RESTful
13 29 (6.12%) XML
14 27 (5.70%) JSON
15 26 (5.49%) SOAP
16 25 (5.27%) Enzyme
17 24 (5.06%) Spring
18 20 (4.22%) CSS3
Miscellaneous
1 238 (50.21%) Algorithms
2 140 (29.54%) Computer Science
3 90 (18.99%) Analytical Skills
4 71 (14.98%) User Experience
5 27 (5.70%) Fixed Income
6 24 (5.06%) Hedge funds
6 24 (5.06%) Mobile App
7 21 (4.43%) Greenfield Project
8 18 (3.80%) Foreign Exchange (FX)
8 18 (3.80%) Self-Motivation
9 17 (3.59%) Fintech
10 16 (3.38%) Cloud Native
10 16 (3.38%) Derivative
10 16 (3.38%) Equities
11 11 (2.32%) Management Information System
12 9 (1.90%) Client/Server
13 8 (1.69%) Public Cloud
14 7 (1.48%) Data Centre
15 6 (1.27%) Blog
16 5 (1.05%) Credit Derivative
Operating Systems
1 58 (12.24%) Linux
2 48 (10.13%) Unix
3 22 (4.64%) Apple iOS
4 17 (3.59%) Windows
5 16 (3.38%) Android
6 4 (0.84%) Red Hat Enterprise Linux
6 4 (0.84%) Windows 7
6 4 (0.84%) Windows Server
7 3 (0.63%) CentOS
7 3 (0.63%) Mac OS
7 3 (0.63%) Windows 8
8 2 (0.42%) Mac OS X
9 1 (0.21%) DC/OS
Processes & Methodologies
1 184 (38.82%) Agile Software Development
2 181 (38.19%) OO
3 123 (25.95%) TDD
4 100 (21.10%) OOD
5 95 (20.04%) Problem-Solving
6 79 (16.67%) Multithreading
7 64 (13.50%) Continuous Integration
8 58 (12.24%) Test Automation
9 55 (11.60%) OOP
10 52 (10.97%) DevOps
11 50 (10.55%) Machine Learning
12 49 (10.34%) Data Modelling
12 49 (10.34%) Front End Development
13 46 (9.70%) Analytics
13 46 (9.70%) BDD
13 46 (9.70%) Business Intelligence
14 44 (9.28%) Scrum
15 43 (9.07%) Functional Programming
15 43 (9.07%) Software Engineering
16 40 (8.44%) Microservices
Programming Languages
1 154 (32.49%) Java
2 151 (31.86%) JavaScript
3 128 (27.00%) SQL
4 113 (23.84%) Python
5 82 (17.30%) C#
6 58 (12.24%) C++
7 55 (11.60%) Scala
8 41 (8.65%) ES6
8 41 (8.65%) TypeScript
9 34 (7.17%) Go
10 22 (4.64%) Java 8
11 21 (4.43%) Apple Swift
12 17 (3.59%) PHP
13 16 (3.38%) Rust
14 15 (3.16%) Perl
15 11 (2.32%) Bash Shell
15 11 (2.32%) T-SQL
16 8 (1.69%) Kotlin
16 8 (1.69%) Shell Script
16 8 (1.69%) VBA
Qualifications
1 79 (16.67%) Degree
2 39 (8.23%) Computer Science Degree
3 16 (3.38%) Security Cleared
4 14 (2.95%) SC Cleared
5 10 (2.11%) Master's Degree
6 6 (1.27%) PhD
7 4 (0.84%) A+ Certification
7 4 (0.84%) DV Cleared
8 3 (0.63%) CTC Cleared
9 2 (0.42%) IIBA
9 2 (0.42%) MCSE
9 2 (0.42%) Microsoft Certification
10 1 (0.21%) (ISC)2 CCSP
10 1 (0.21%) AWS Certification
10 1 (0.21%) CCSP
10 1 (0.21%) Cisco Certification
10 1 (0.21%) CISSP
10 1 (0.21%) HND
10 1 (0.21%) ISEB
10 1 (0.21%) MCSA
Quality Assurance & Compliance
1 14 (2.95%) Data Quality
1 14 (2.95%) QA
2 2 (0.42%) IFRS
3 1 (0.21%) IFRS 9
3 1 (0.21%) PMO
System Software
1 59 (12.45%) Docker
2 12 (2.53%) HDFS
3 7 (1.48%) Apache Flume
4 4 (0.84%) Active Directory
4 4 (0.84%) KVM
4 4 (0.84%) LXC
5 2 (0.42%) Apache ZooKeeper
6 1 (0.21%) Cronacle
6 1 (0.21%) etcd
6 1 (0.21%) Varnish
Systems Management
1 40 (8.44%) Kubernetes
2 12 (2.53%) Ansible
3 7 (1.48%) Opscode Chef
4 5 (1.05%) Puppet
5 4 (0.84%) Oozie
5 4 (0.84%) Prometheus
5 4 (0.84%) Single Sign-On
6 3 (0.63%) Consul
6 3 (0.63%) CSIRT
6 3 (0.63%) Grafana
6 3 (0.63%) Hadoop YARN
6 3 (0.63%) Kibana
6 3 (0.63%) logstash
7 2 (0.42%) Docker Swarm
8 1 (0.21%) Apache Brooklyn
8 1 (0.21%) Marathon
8 1 (0.21%) Mesos
8 1 (0.21%) RSA Archer
8 1 (0.21%) RSA Security Analytics
8 1 (0.21%) Terraform
Vendors
1 53 (11.18%) Google
2 35 (7.38%) Oracle
3 28 (5.91%) Microsoft
4 24 (5.06%) Tableau
5 23 (4.85%) SAP
6 22 (4.64%) Twitter
7 9 (1.90%) Cypress Semiconductor
7 9 (1.90%) Perfecto Mobile
8 8 (1.69%) Infragistics
9 6 (1.27%) Alteryx
9 6 (1.27%) RapidMiner
9 6 (1.27%) Salesforce.com
10 5 (1.05%) Red Hat
10 5 (1.05%) Sybase
11 4 (0.84%) Atlassian
11 4 (0.84%) Citrix
11 4 (0.84%) F5
11 4 (0.84%) Perforce
12 3 (0.63%) Apple
12 3 (0.63%) Talend