Period
to 14 August 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 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
England > London
6 months to
14 Aug 2018
Same period 2017 Same period 2016
Rank 257 256 346
Rank change year-on-year -1 +90 -37
Contract jobs citing Data Structures 464 444 320
As % of all contract IT jobs advertised in London 1.02% 1.04% 0.70%
As % of the Miscellaneous category 2.64% 2.70% 1.86%
Number of daily rates quoted 290 311 227
London median daily rate £550 £500 £475
Median daily rate % change year-on-year +10.00% +5.26% -9.52%
10th Percentile £408 £363 £313
90th Percentile £700 £675 £675
England median daily rate £500 £470 £438
% change year-on-year +6.38% +7.43% -2.78%
Number of hourly rates quoted 3 0 7
London median hourly rate £20.00 - £43.75
10th Percentile £19.20 - £40.25
90th Percentile £21.00 - £47.20
England median hourly rate £32.75 £35.00 £35.00
% change year-on-year -6.43% - -

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 17,553 16,470 17,185
As % of all contract IT jobs advertised in London 38.50% 38.69% 37.81%
Number of daily rates quoted 12,578 11,695 12,314
London median daily rate £513 £500 £475
Median daily rate % change year-on-year +2.50% +5.26% +5.56%
10th Percentile £319 £313 £288
90th Percentile £700 £675 £650
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +3.03%
Number of hourly rates quoted 269 226 228
London median hourly rate £23.50 £21.90 £20.00
Median hourly rate % change year-on-year +7.31% +9.50% -
10th Percentile £13.21 £12.66 £11.25
90th Percentile £54.79 £49.60 £55.57
England median hourly rate £21.90 £19.92 £20.00
% change year-on-year +9.95% -0.41% +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 14 August 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
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 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
Central London -15 113 £500 - 50
West London -45 13 £550 +15.79% 29
South London -37 8 £500 +32.45%
East London -31 1 £605 +28.62% 9
North London - 1 - - 1
Data Structures
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 London region with a requirement for Data Structures.

1 239 (51.51%) Algorithms
2 194 (41.81%) Agile Software Development
3 162 (34.91%) OO
4 156 (33.62%) Java
5 155 (33.41%) Finance
6 141 (30.39%) SQL
7 139 (29.96%) Computer Science
8 125 (26.94%) JavaScript
8 125 (26.94%) Python
9 115 (24.78%) Amazon AWS
10 104 (22.41%) TDD
11 98 (21.12%) CSS
12 97 (20.91%) HTML
13 93 (20.04%) Problem-Solving
14 88 (18.97%) Degree
15 87 (18.75%) Analytical Skills
16 85 (18.32%) OOD
17 82 (17.67%) Git (software)
18 81 (17.46%) Multithreading
19 65 (14.01%) Linux
20 64 (13.79%) Machine Learning
20 64 (13.79%) Redux
21 63 (13.58%) Docker
21 63 (13.58%) Unix
21 63 (13.58%) Banking
22 62 (13.36%) C#
23 61 (13.15%) User Experience
24 60 (12.93%) Continuous Integration
25 59 (12.72%) Relational Database
26 58 (12.50%) AngularJS

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 28 (6.03%) Apache Spark
2 15 (3.23%) Apache Pig
3 14 (3.02%) Apache
4 13 (2.80%) Elasticsearch
5 11 (2.37%) Confluence
6 7 (1.51%) SAS
7 6 (1.29%) Tomcat
8 5 (1.08%) Cloud Foundry
9 4 (0.86%) Ethereum
10 3 (0.65%) IPython
10 3 (0.65%) SharePoint
10 3 (0.65%) WebSphere
11 2 (0.43%) CMS
11 2 (0.43%) IIS
11 2 (0.43%) JBoss
11 2 (0.43%) Oracle SOA Suite
11 2 (0.43%) WebLogic
12 1 (0.22%) Apache Airflow
12 1 (0.22%) Hyperledger
12 1 (0.22%) Luigi
Applications
1 15 (3.23%) Microsoft Excel
2 5 (1.08%) InVision
2 5 (1.08%) Microsoft Project
3 4 (0.86%) MS Visio
4 3 (0.65%) Adobe Illustrator
4 3 (0.65%) Photoshop
5 1 (0.22%) AutoCAD
5 1 (0.22%) Revit
5 1 (0.22%) Spreadsheet
Business Applications
1 4 (0.86%) Distributed Ledger
2 3 (0.65%) Dynamics CRM
2 3 (0.65%) Dynamics NAV
2 3 (0.65%) Markit EDM
2 3 (0.65%) SAP Oil and Gas
3 2 (0.43%) Dynamics AX
3 2 (0.43%) NetSuite
3 2 (0.43%) Oracle Assets
3 2 (0.43%) Oracle Payables
3 2 (0.43%) SAP ERP
3 2 (0.43%) SAP S/4HANA
4 1 (0.22%) Oracle Cash Management
4 1 (0.22%) Oracle FAH
4 1 (0.22%) Oracle Financials
4 1 (0.22%) Oracle General Ledger
4 1 (0.22%) Oracle Receivables
4 1 (0.22%) R3 Corda
4 1 (0.22%) Salesforce.com CRM
4 1 (0.22%) SAP EWM
4 1 (0.22%) SAP MDG
Cloud Services
1 115 (24.78%) Amazon AWS
2 47 (10.13%) GitHub
3 35 (7.54%) Microsoft Azure
4 25 (5.39%) Heroku
5 24 (5.17%) Google Cloud Platform
6 17 (3.66%) Amazon S3
7 15 (3.23%) Amazon EC2
8 11 (2.37%) Google Analytics
9 8 (1.72%) Cloud Computing
9 8 (1.72%) PaaS
9 8 (1.72%) SaaS
10 6 (1.29%) AWS Elastic Beanstalk
10 6 (1.29%) BrowserStack
10 6 (1.29%) OpenShift
10 6 (1.29%) Sauce Labs
11 5 (1.08%) AdWords
11 5 (1.08%) npm
12 3 (0.65%) Amazon EMR
12 3 (0.65%) Azure Active Directory
13 2 (0.43%) IaaS
Communications & Networking
1 17 (3.66%) TCP/IP
2 12 (2.59%) HTTP
3 11 (2.37%) Internet
4 6 (1.29%) AMQP
4 6 (1.29%) HTTPS
4 6 (1.29%) Kerberos
4 6 (1.29%) MQTT
5 4 (0.86%) Firewall
6 2 (0.43%) BIG-IP
6 2 (0.43%) DMZ
6 2 (0.43%) Intranet
6 2 (0.43%) Intrusion Detection
6 2 (0.43%) IPFS
6 2 (0.43%) NetScaler
6 2 (0.43%) VoIP
6 2 (0.43%) VPN
7 1 (0.22%) Multicast
7 1 (0.22%) SMS
Database & Business Intelligence
1 59 (12.72%) Relational Database
2 46 (9.91%) Big Data
3 45 (9.70%) Data Warehouse
4 43 (9.27%) NoSQL
5 42 (9.05%) Hadoop
6 40 (8.62%) PostgreSQL
7 35 (7.54%) Apache Hive
8 33 (7.11%) SQL Server
9 31 (6.68%) MongoDB
10 18 (3.88%) SQL Server Integration Services
11 16 (3.45%) Amazon Redshift
12 15 (3.23%) MySQL
13 14 (3.02%) SQL Server Analysis Services
14 13 (2.80%) DB2
14 13 (2.80%) Power BI
15 10 (2.16%) Apache Cassandra
16 9 (1.94%) Blockchain
16 9 (1.94%) RDBMS
17 8 (1.72%) BusinessObjects
17 8 (1.72%) Redis
Development Applications
1 82 (17.67%) Git (software)
2 48 (10.34%) webpack
3 31 (6.68%) Jenkins
4 27 (5.82%) PostCSS
5 24 (5.17%) Jasmine
5 24 (5.17%) JIRA
6 19 (4.09%) Grunt
6 19 (4.09%) gulp
7 17 (3.66%) JUnit
8 16 (3.45%) Subversion
9 14 (3.02%) PhantomJS
9 14 (3.02%) Selenium
10 13 (2.80%) Cucumber
11 10 (2.16%) Bitbucket
12 9 (1.94%) Gerrit
13 8 (1.72%) Hudson
13 8 (1.72%) JMeter
14 7 (1.51%) Maven
14 7 (1.51%) Protractor
15 6 (1.29%) GoogleTest
General
1 155 (33.41%) Finance
2 63 (13.58%) Banking
3 43 (9.27%) Front Office
4 22 (4.74%) Games
5 17 (3.66%) Investment Banking
6 16 (3.45%) Telecoms
7 10 (2.16%) Legal
8 8 (1.72%) Back Office
9 7 (1.51%) Marketing
9 7 (1.51%) Retail
10 4 (0.86%) Manufacturing
11 3 (0.65%) French Language
11 3 (0.65%) German Language
12 2 (0.43%) Arabic Language
12 2 (0.43%) Financial Institution
12 2 (0.43%) General Ledger
12 2 (0.43%) Private Banking
13 1 (0.22%) Advertising
13 1 (0.22%) Pharmaceutical
13 1 (0.22%) Wholesale Banking
Job Titles
1 321 (69.18%) Developer
2 84 (18.10%) Java Developer
3 45 (9.70%) Python Developer
4 38 (8.19%) Analyst
4 38 (8.19%) Front End Developer (Client-Side Developer)
5 37 (7.97%) React Developer
5 37 (7.97%) Senior Developer
6 32 (6.90%) Data Engineer
7 26 (5.60%) C# Developer
8 24 (5.17%) Digital Developer
9 23 (4.96%) Python Engineer
10 22 (4.74%) JavaScript Developer
11 20 (4.31%) AWS Engineer
11 20 (4.31%) Front Office Developer
12 16 (3.45%) Senior Python Developer
13 15 (3.23%) Architect
13 15 (3.23%) Senior Data Engineer
13 15 (3.23%) SQL Developer
14 14 (3.02%) Lead Developer
15 13 (2.80%) Java Engineer
Libraries, Frameworks & Software Standards
1 98 (21.12%) CSS
2 97 (20.91%) HTML
3 64 (13.79%) Redux
4 58 (12.50%) AngularJS
5 47 (10.13%) Web Services
6 40 (8.62%) REST
7 39 (8.41%) Kafka
7 39 (8.41%) Spring
8 38 (8.19%) HTML5
9 37 (7.97%) Chai
10 36 (7.76%) Node.js
11 31 (6.68%) .NET
12 28 (6.03%) XML
13 27 (5.82%) Enzyme
13 27 (5.82%) JSON
14 25 (5.39%) React
15 24 (5.17%) jQuery
15 24 (5.17%) RESTful
15 24 (5.17%) Sass
16 21 (4.53%) Jest
Miscellaneous
1 239 (51.51%) Algorithms
2 139 (29.96%) Computer Science
3 87 (18.75%) Analytical Skills
4 61 (13.15%) User Experience
5 29 (6.25%) Greenfield Project
6 26 (5.60%) Fintech
6 26 (5.60%) Mobile App
7 21 (4.53%) Fixed Income
8 20 (4.31%) Foreign Exchange (FX)
9 17 (3.66%) Hedge funds
10 16 (3.45%) Derivative
11 15 (3.23%) Equities
12 13 (2.80%) Self-Motivation
13 11 (2.37%) Management Information System
14 9 (1.94%) Blog
15 7 (1.51%) Client/Server
15 7 (1.51%) Cloud Native
15 7 (1.51%) Data Centre
16 6 (1.29%) Public Cloud
17 5 (1.08%) Enterprise Software
Operating Systems
1 65 (14.01%) Linux
2 63 (13.58%) Unix
3 15 (3.23%) Windows
4 13 (2.80%) Apple iOS
5 8 (1.72%) Android
6 4 (0.86%) Windows 7
7 3 (0.65%) CentOS
7 3 (0.65%) Mac OS
7 3 (0.65%) Windows 8
8 2 (0.43%) Red Hat Enterprise Linux
8 2 (0.43%) Windows Server
9 1 (0.22%) DC/OS
Processes & Methodologies
1 194 (41.81%) Agile Software Development
2 162 (34.91%) OO
3 104 (22.41%) TDD
4 93 (20.04%) Problem-Solving
5 85 (18.32%) OOD
6 81 (17.46%) Multithreading
7 64 (13.79%) Machine Learning
8 60 (12.93%) Continuous Integration
9 58 (12.50%) Test Automation
10 56 (12.07%) DevOps
11 54 (11.64%) Analytics
12 51 (10.99%) Software Engineering
13 44 (9.48%) Data Modelling
13 44 (9.48%) OOP
14 42 (9.05%) ETL
14 42 (9.05%) Front End Development
14 42 (9.05%) SDLC
15 39 (8.41%) Data Science
16 37 (7.97%) Scrum
17 36 (7.76%) Business Intelligence
Programming Languages
1 156 (33.62%) Java
2 141 (30.39%) SQL
3 125 (26.94%) JavaScript
3 125 (26.94%) Python
4 62 (13.36%) C#
5 52 (11.21%) Scala
6 48 (10.34%) C++
7 45 (9.70%) ES6
8 30 (6.47%) Go
9 24 (5.17%) TypeScript
10 22 (4.74%) Java 8
11 19 (4.09%) Perl
12 15 (3.23%) R
13 13 (2.80%) Shell Script
14 12 (2.59%) Apple Swift
14 12 (2.59%) C
15 11 (2.37%) PHP
15 11 (2.37%) T-SQL
16 10 (2.16%) VBA
17 7 (1.51%) Bash Shell
Qualifications
1 88 (18.97%) Degree
2 36 (7.76%) Computer Science Degree
3 12 (2.59%) Master's Degree
4 10 (2.16%) Security Cleared
5 8 (1.72%) SC Cleared
6 5 (1.08%) Numerate Degree
6 5 (1.08%) PhD
7 4 (0.86%) A+ Certification
8 3 (0.65%) CTC Cleared
8 3 (0.65%) ISEB
9 2 (0.43%) CISA
9 2 (0.43%) CISM
9 2 (0.43%) CISSP
9 2 (0.43%) DBS Check
9 2 (0.43%) MCSE
9 2 (0.43%) Microsoft Certification
10 1 (0.22%) CCSP
10 1 (0.22%) Cisco Certification
10 1 (0.22%) MCSA
10 1 (0.22%) Sun Certification
Quality Assurance & Compliance
1 18 (3.88%) Data Quality
2 6 (1.29%) QA
3 5 (1.08%) IFRS
3 5 (1.08%) IFRS 9
4 3 (0.65%) GDPR
5 2 (0.43%) PMO
5 2 (0.43%) SLA
System Software
1 63 (13.58%) Docker
2 13 (2.80%) HDFS
3 10 (2.16%) Apache Flume
4 9 (1.94%) Active Directory
5 2 (0.43%) Apache ZooKeeper
5 2 (0.43%) KVM
5 2 (0.43%) LXC
6 1 (0.22%) etcd
6 1 (0.22%) Varnish
Systems Management
1 27 (5.82%) Kubernetes
2 17 (3.66%) Opscode Chef
3 12 (2.59%) Ansible
4 10 (2.16%) Oozie
5 4 (0.86%) CSIRT
5 4 (0.86%) Puppet
6 3 (0.65%) Consul
7 2 (0.43%) Docker Swarm
7 2 (0.43%) Hadoop YARN
7 2 (0.43%) Kibana
7 2 (0.43%) Single Sign-On
8 1 (0.22%) Apache Brooklyn
8 1 (0.22%) Host Intrusion Detection System
8 1 (0.22%) Marathon
8 1 (0.22%) Mesos
8 1 (0.22%) Network Intrusion Detection System
8 1 (0.22%) RSA Archer
8 1 (0.22%) RSA Security Analytics
8 1 (0.22%) Terraform
Vendors
1 49 (10.56%) Google
2 41 (8.84%) Oracle
3 27 (5.82%) Twitter
4 22 (4.74%) Microsoft
5 18 (3.88%) Tableau
6 17 (3.66%) SAP
7 15 (3.23%) Salesforce.com
8 11 (2.37%) Sybase
9 9 (1.94%) IBM
10 8 (1.72%) Atlassian
11 6 (1.29%) Alteryx
11 6 (1.29%) Capita
11 6 (1.29%) Cloudera
11 6 (1.29%) Cypress Semiconductor
11 6 (1.29%) Maconomy
11 6 (1.29%) Perfecto Mobile
11 6 (1.29%) RapidMiner
12 5 (1.08%) Infragistics
13 4 (0.86%) Perforce
13 4 (0.86%) Teradata