Period
to 18 December 2018

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in Central London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 18 December 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
London > Central London
6 months to
18 Dec 2018
Same period 2017 Same period 2016
Rank 166 155 219
Rank change year-on-year -11 +64 -2
Contract jobs citing Data Structures 140 136 51
As % of all contract IT jobs advertised in Central London 1.51% 1.56% 0.65%
As % of the Miscellaneous category 3.78% 3.77% 1.68%
Number of daily rates quoted 93 118 37
Central London median daily rate £525 £575 £475
Median daily rate % change year-on-year -8.70% +21.05% -13.64%
10th Percentile £421 £369 £385
90th Percentile £687 £813 £688
London median daily rate £550 £525 £500
% change year-on-year +4.76% +5.00% -4.76%
Number of hourly rates quoted 4 1 0
Central London median hourly rate £37.09 £28.00 -
Median hourly rate % change year-on-year +32.46% - -
London median hourly rate £37.09 £55.00 £32.50
% change year-on-year -32.56% +69.23% +12.07%

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 Central London with a requirement for generic IT skills.

All Generic IT Skills
Central London
Contract vacancies with a requirement for generic IT skills 3,701 3,608 3,032
As % of all contract IT jobs advertised in Central London 39.81% 41.48% 38.91%
Number of daily rates quoted 2,811 2,778 2,288
Central London median daily rate £525 £525 £475
Median daily rate % change year-on-year - +10.53% -
10th Percentile £300 £313 £313
90th Percentile £700 £713 £663
London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.21%
Number of hourly rates quoted 65 42 38
Central London median hourly rate £19.25 £21.62 £18.73
Median hourly rate % change year-on-year -10.96% +15.46% -3.97%
10th Percentile £13.59 £13.31 £11.25
90th Percentile £30.80 £34.25 £55.00
London median hourly rate £23.07 £21.70 £20.00
% change year-on-year +6.29% +8.50% -4.35%

Data Structures
Job Vacancy Trend in Central London

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

Job vacancy trend for Data Structures in Central London

Data Structures
Contractor Daily Rate Trend in Central London

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

Contractor daily rate trend for Data Structures in Central London

Data Structures
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing Data Structures in Central London over the 6 months to 18 December 2018.

Contractor daily rate histogram for Data Structures in Central London

Data Structures
Contractor Hourly Rate Trend in Central London

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

Contractor hourly rate trend for Data Structures in Central London

Data Structures
Contract Job Locations in Central 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 Central London region over the 6 months to 18 December 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
City of London -13 100 £525 -8.70% 69
West End of London -10 22 £575 -
Data Structures
London

For the 6 months to 18 December 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 Central London region with a requirement for Data Structures.

1 76 (54.29%) Algorithms
2 74 (52.86%) OO
3 66 (47.14%) Finance
4 60 (42.86%) Agile Software Development
5 58 (41.43%) SQL
6 51 (36.43%) JavaScript
7 48 (34.29%) Computer Science
8 47 (33.57%) OOD
9 41 (29.29%) CSS
10 39 (27.86%) User Experience
11 38 (27.14%) HTML
12 35 (25.00%) TDD
12 35 (25.00%) Git (software)
13 34 (24.29%) Test Automation
13 34 (24.29%) Python
13 34 (24.29%) Problem-Solving
14 33 (23.57%) Amazon AWS
15 31 (22.14%) OOP
16 28 (20.00%) Front End Development
17 27 (19.29%) Analytical Skills
18 25 (17.86%) Redux
19 24 (17.14%) Degree
19 24 (17.14%) Java
20 22 (15.71%) C++
20 22 (15.71%) Linux
21 21 (15.00%) BDD
21 21 (15.00%) webpack
22 20 (14.29%) AngularJS
22 20 (14.29%) Microsoft Azure
23 19 (13.57%) Hedge funds

Data Structures
Co-occurring IT Skills in Central 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 15 (10.71%) IPython
2 6 (4.29%) Apache Spark
3 2 (1.43%) Confluence
3 2 (1.43%) OpenStack
4 1 (0.71%) CMS
4 1 (0.71%) Drupal
4 1 (0.71%) Ethereum
4 1 (0.71%) Jupyter
4 1 (0.71%) SAS
4 1 (0.71%) SharePoint
4 1 (0.71%) WordPress
Applications
1 13 (9.29%) Microsoft Excel
2 3 (2.14%) MS Visio
3 1 (0.71%) Spreadsheet
Business Applications
1 5 (3.57%) SAP Oil and Gas
2 2 (1.43%) Distributed Ledger
3 1 (0.71%) Oracle EBS
3 1 (0.71%) SAP MM
3 1 (0.71%) SAP R/3
3 1 (0.71%) SAP S/4HANA
Cloud Services
1 33 (23.57%) Amazon AWS
2 20 (14.29%) Microsoft Azure
3 14 (10.00%) GitHub
4 13 (9.29%) Heroku
5 8 (5.71%) Google Cloud Platform
6 3 (2.14%) OpenShift
7 2 (1.43%) Dynamics 365
8 1 (0.71%) Amazon Kinesis
8 1 (0.71%) AWS CloudFormation
8 1 (0.71%) AWS CodePipeline
8 1 (0.71%) BrowserStack
8 1 (0.71%) PaaS
8 1 (0.71%) Sauce Labs
Communications & Networking
1 3 (2.14%) AMQP
1 3 (2.14%) Internet
1 3 (2.14%) MQTT
2 1 (0.71%) HTTP
2 1 (0.71%) HTTPS
2 1 (0.71%) IPFS
Database & Business Intelligence
1 18 (12.86%) Data Warehouse
2 17 (12.14%) SQL Server
3 16 (11.43%) NoSQL
4 12 (8.57%) Power BI
4 12 (8.57%) Relational Database
5 10 (7.14%) Big Data
6 9 (6.43%) SQL Server Analysis Services
6 9 (6.43%) SQL Server Integration Services
7 8 (5.71%) Redis
8 7 (5.00%) SQL Server Reporting Services
9 6 (4.29%) Enterprise Data Warehouse
9 6 (4.29%) PostgreSQL
9 6 (4.29%) SQL Server 2016
10 5 (3.57%) BusinessObjects
11 4 (2.86%) Microsoft Analysis Services
11 4 (2.86%) MongoDB
11 4 (2.86%) SAP HANA
12 3 (2.14%) Biml
12 3 (2.14%) Blockchain
12 3 (2.14%) RDBMS
Development Applications
1 35 (25.00%) Git (software)
2 21 (15.00%) webpack
3 17 (12.14%) PostCSS
4 8 (5.71%) Jasmine
5 7 (5.00%) Grunt
5 7 (5.00%) gulp
6 6 (4.29%) Jenkins
6 6 (4.29%) JUnit
6 6 (4.29%) Mocha
6 6 (4.29%) Subversion
6 6 (4.29%) TestNG
7 5 (3.57%) Selenium
8 4 (2.86%) Cucumber
8 4 (2.86%) Karma Test Runner
8 4 (2.86%) Protractor
8 4 (2.86%) Sinon.JS
9 3 (2.14%) ERwin
9 3 (2.14%) GoogleTest
9 3 (2.14%) JIRA
10 2 (1.43%) Toad
General
1 66 (47.14%) Finance
2 6 (4.29%) Banking
3 4 (2.86%) Games
3 4 (2.86%) Investment Banking
3 4 (2.86%) Telecoms
4 2 (1.43%) Legal
5 1 (0.71%) Front Office
5 1 (0.71%) General Ledger
5 1 (0.71%) Manufacturing
5 1 (0.71%) Marketing
5 1 (0.71%) Retail
Job Titles
1 101 (72.14%) Developer
2 26 (18.57%) Front End Developer (Client-Side Developer)
3 21 (15.00%) React Developer
4 18 (12.86%) Python Developer
5 15 (10.71%) Quantitative Developer
5 15 (10.71%) Senior Developer
6 13 (9.29%) Lead Developer
7 12 (8.57%) Java Developer
8 11 (7.86%) Analyst
9 9 (6.43%) Senior Front-End Developer
10 8 (5.71%) Senior React Developer
11 7 (5.00%) Business Intelligence Developer
12 6 (4.29%) Digital Developer
12 6 (4.29%) SQL Developer
13 5 (3.57%) Business Intelligence Analyst
13 5 (3.57%) Data Engineer
13 5 (3.57%) Python Engineer
14 4 (2.86%) Coordinator
14 4 (2.86%) Data Analyst
14 4 (2.86%) Software Engineer
Libraries, Frameworks & Software Standards
1 41 (29.29%) CSS
2 38 (27.14%) HTML
3 25 (17.86%) Redux
4 20 (14.29%) AngularJS
5 19 (13.57%) REST
6 17 (12.14%) HTML5
7 16 (11.43%) Enzyme
7 16 (11.43%) Flask
8 15 (10.71%) Chai
8 15 (10.71%) GraphQL
8 15 (10.71%) NumPy
8 15 (10.71%) Pandas
8 15 (10.71%) Sass
9 14 (10.00%) CSS3
9 14 (10.00%) LESS
10 12 (8.57%) React
11 11 (7.86%) Node.js
11 11 (7.86%) XML
12 8 (5.71%) Jest
12 8 (5.71%) RESTful
Miscellaneous
1 76 (54.29%) Algorithms
2 39 (27.86%) User Experience
3 27 (19.29%) Analytical Skills
4 19 (13.57%) Hedge funds
5 15 (10.71%) Client/Server
6 7 (5.00%) Self-Motivation
7 6 (4.29%) Fintech
8 4 (2.86%) Analytical Mindset
8 4 (2.86%) Data Centre
8 4 (2.86%) Management Information System
9 3 (2.14%) Mobile App
10 2 (1.43%) Bitcoin
10 2 (1.43%) Blog
10 2 (1.43%) Foreign Exchange (FX)
10 2 (1.43%) Greenfield Project
10 2 (1.43%) Private Cloud
10 2 (1.43%) Reinsurance
11 1 (0.71%) Cloud Native
11 1 (0.71%) Fixed Income
11 1 (0.71%) Replication
Operating Systems
1 22 (15.71%) Linux
2 2 (1.43%) Android
2 2 (1.43%) Apple iOS
2 2 (1.43%) Unix
2 2 (1.43%) Windows
Processes & Methodologies
1 74 (52.86%) OO
2 60 (42.86%) Agile Software Development
3 48 (34.29%) Computer Science
4 47 (33.57%) OOD
5 35 (25.00%) TDD
6 34 (24.29%) Problem-Solving
6 34 (24.29%) Test Automation
7 31 (22.14%) OOP
8 28 (20.00%) Front End Development
9 21 (15.00%) BDD
10 19 (13.57%) Scrum
11 18 (12.86%) Business Intelligence
12 17 (12.14%) Project Management
13 15 (10.71%) Automated Trading
13 15 (10.71%) Backtesting
13 15 (10.71%) Data Management
13 15 (10.71%) Mentoring
14 14 (10.00%) Visualisation
15 13 (9.29%) API Design
15 13 (9.29%) Data Modelling
Programming Languages
1 58 (41.43%) SQL
2 51 (36.43%) JavaScript
3 34 (24.29%) Python
4 24 (17.14%) Java
5 22 (15.71%) C++
6 19 (13.57%) ES6
7 15 (10.71%) Cython
7 15 (10.71%) TypeScript
8 9 (6.43%) C#
8 9 (6.43%) Go
8 9 (6.43%) Scala
8 9 (6.43%) VBA
9 7 (5.00%) T-SQL
10 6 (4.29%) Java 8
10 6 (4.29%) R
11 3 (2.14%) Kotlin
12 2 (1.43%) Apple Swift
12 2 (1.43%) Groovy
12 2 (1.43%) Solidity
12 2 (1.43%) XAML
Qualifications
1 24 (17.14%) Degree
2 4 (2.86%) Computer Science Degree
2 4 (2.86%) Master's Degree
3 2 (1.43%) ACCA
3 2 (1.43%) MCSA
3 2 (1.43%) Microsoft Certification
4 1 (0.71%) DBS Check
Quality Assurance & Compliance
1 12 (8.57%) Data Quality
2 9 (6.43%) QA
3 1 (0.71%) IFRS
System Software
1 16 (11.43%) Docker
2 1 (0.71%) Apache ZooKeeper
2 1 (0.71%) etcd
2 1 (0.71%) HDFS
2 1 (0.71%) Varnish
Systems Management
1 14 (10.00%) Kubernetes
2 3 (2.14%) Ansible
3 2 (1.43%) Consul
4 1 (0.71%) Docker Swarm
4 1 (0.71%) Opscode Chef
4 1 (0.71%) Terraform
Vendors
1 10 (7.14%) Google
1 10 (7.14%) Microsoft
1 10 (7.14%) Twitter
2 8 (5.71%) SAP
3 6 (4.29%) Oracle
4 3 (2.14%) Tableau
5 2 (1.43%) Rackspace
6 1 (0.71%) Alteryx
6 1 (0.71%) Bloomberg
6 1 (0.71%) CODA
6 1 (0.71%) Cognos
6 1 (0.71%) Cypress Semiconductor
6 1 (0.71%) MicroStrategy
6 1 (0.71%) Perfecto Mobile
6 1 (0.71%) RapidMiner
6 1 (0.71%) Reuters
6 1 (0.71%) Teradata