Period
to 18 October 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 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
London > Central London
6 months to
18 Oct 2018
Same period 2017 Same period 2016
Rank 173 143 205
Rank change year-on-year -30 +62 +16
Contract jobs citing Data Structures 123 124 64
As % of all contract IT jobs advertised in Central London 1.35% 1.54% 0.79%
As % of the Miscellaneous category 3.25% 3.62% 1.93%
Number of daily rates quoted 81 98 52
Central London median daily rate £500 £525 £525
Median daily rate % change year-on-year -4.76% - -4.55%
10th Percentile £425 £360 £364
90th Percentile £725 £813 £686
London median daily rate £540 £525 £475
% change year-on-year +2.86% +10.53% -9.52%
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 £28.00 -
% change year-on-year +32.46% - -

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 3,788 3,429 3,316
As % of all contract IT jobs advertised in Central London 41.69% 42.55% 40.80%
Number of daily rates quoted 2,901 2,590 2,593
Central London median daily rate £525 £525 £475
Median daily rate % change year-on-year - +10.53% +1.06%
10th Percentile £313 £313 £308
90th Percentile £700 £700 £662
London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 65 42 40
Central London median hourly rate £19.25 £19.50 £17.98
Median hourly rate % change year-on-year -1.28% +8.48% -10.13%
10th Percentile £13.31 £12.54 £11.25
90th Percentile £37.09 £33.25 £67.00
London median hourly rate £22.93 £21.20 £19.00
% change year-on-year +8.16% +11.58% -4.70%

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 October 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 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
City of London -40 77 £500 -4.76% 54
West End of London -7 23 £563 - 15
City of Westminster +5 9 - - 1
Data Structures
London

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

1 60 (48.78%) Algorithms
2 55 (44.72%) OO
3 52 (42.28%) Agile Software Development
4 47 (38.21%) Finance
5 45 (36.59%) JavaScript
6 40 (32.52%) Computer Science
7 37 (30.08%) TDD
8 36 (29.27%) SQL
8 36 (29.27%) CSS
9 34 (27.64%) HTML
10 32 (26.02%) OOD
10 32 (26.02%) Amazon AWS
11 31 (25.20%) User Experience
12 30 (24.39%) Git (software)
13 29 (23.58%) Problem-Solving
14 26 (21.14%) OOP
15 24 (19.51%) Front End Development
16 22 (17.89%) AngularJS
17 21 (17.07%) BDD
18 20 (16.26%) Test Automation
18 20 (16.26%) REST
18 20 (16.26%) Docker
18 20 (16.26%) Redux
19 19 (15.45%) Relational Database
19 19 (15.45%) HTML5
19 19 (15.45%) Python
19 19 (15.45%) Java
20 18 (14.63%) Analytical Skills
21 17 (13.82%) Project Management
21 17 (13.82%) Scrum

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 2 (1.63%) Apache Spark
1 2 (1.63%) Confluence
1 2 (1.63%) SAS
2 1 (0.81%) Apache Pig
2 1 (0.81%) Cloud Foundry
2 1 (0.81%) CMS
2 1 (0.81%) Drupal
2 1 (0.81%) Ethereum
2 1 (0.81%) IPython
2 1 (0.81%) SharePoint
2 1 (0.81%) WordPress
Applications
1 13 (10.57%) Microsoft Excel
2 1 (0.81%) Spreadsheet
Business Applications
1 5 (4.07%) SAP Oil and Gas
2 2 (1.63%) Distributed Ledger
3 1 (0.81%) Dynamics NAV
3 1 (0.81%) Markit EDM
3 1 (0.81%) Oracle EBS
3 1 (0.81%) SAP MM
3 1 (0.81%) SAP R/3
3 1 (0.81%) SAP S/4HANA
Cloud Services
1 32 (26.02%) Amazon AWS
2 15 (12.20%) Microsoft Azure
3 14 (11.38%) Google Cloud Platform
4 13 (10.57%) GitHub
5 7 (5.69%) Heroku
6 3 (2.44%) OpenShift
7 1 (0.81%) AWS CloudFormation
7 1 (0.81%) AWS CodePipeline
7 1 (0.81%) AWS Elastic Beanstalk
7 1 (0.81%) BrowserStack
7 1 (0.81%) PaaS
7 1 (0.81%) SaaS
7 1 (0.81%) Sauce Labs
Communications & Networking
1 3 (2.44%) AMQP
1 3 (2.44%) Internet
1 3 (2.44%) MQTT
2 1 (0.81%) HTTP
2 1 (0.81%) HTTPS
2 1 (0.81%) IPFS
Database & Business Intelligence
1 19 (15.45%) Relational Database
2 15 (12.20%) SQL Server
3 14 (11.38%) Data Warehouse
3 14 (11.38%) NoSQL
4 8 (6.50%) Big Data
4 8 (6.50%) Power BI
5 6 (4.88%) PostgreSQL
5 6 (4.88%) SQL Server 2016
5 6 (4.88%) SQL Server Analysis Services
5 6 (4.88%) SQL Server Integration Services
6 5 (4.07%) BusinessObjects
7 4 (3.25%) Blockchain
7 4 (3.25%) Enterprise Data Warehouse
7 4 (3.25%) Hadoop
7 4 (3.25%) Microsoft Analysis Services
7 4 (3.25%) MongoDB
7 4 (3.25%) Redis
7 4 (3.25%) SAP HANA
7 4 (3.25%) SQL Server Reporting Services
8 3 (2.44%) Biml
Development Applications
1 30 (24.39%) Git (software)
2 16 (13.01%) webpack
3 11 (8.94%) PostCSS
4 9 (7.32%) Jasmine
5 8 (6.50%) Grunt
5 8 (6.50%) gulp
6 6 (4.88%) Jenkins
6 6 (4.88%) Mocha
6 6 (4.88%) Subversion
7 5 (4.07%) Selenium
8 4 (3.25%) Cucumber
8 4 (3.25%) JIRA
8 4 (3.25%) Karma Test Runner
8 4 (3.25%) Protractor
8 4 (3.25%) Sinon.JS
9 3 (2.44%) GoogleTest
9 3 (2.44%) JUnit
9 3 (2.44%) PhantomJS
10 2 (1.63%) ERwin
10 2 (1.63%) Toad
General
1 47 (38.21%) Finance
2 8 (6.50%) Banking
3 5 (4.07%) Games
3 5 (4.07%) Investment Banking
4 4 (3.25%) Front Office
5 3 (2.44%) Telecoms
6 1 (0.81%) Back Office
6 1 (0.81%) General Ledger
6 1 (0.81%) Legal
6 1 (0.81%) Manufacturing
6 1 (0.81%) Retail
Job Titles
1 88 (71.54%) Developer
2 22 (17.89%) Front End Developer (Client-Side Developer)
3 16 (13.01%) React Developer
4 13 (10.57%) Lead Developer
5 12 (9.76%) Analyst
5 12 (9.76%) Senior Developer
6 11 (8.94%) Java Developer
7 7 (5.69%) Backend Developer
8 6 (4.88%) Digital Developer
9 5 (4.07%) Business Intelligence Developer
9 5 (4.07%) Data Analyst
9 5 (4.07%) Data Engineer
9 5 (4.07%) Python Developer
9 5 (4.07%) Senior Front-End Developer
10 4 (3.25%) Business Analyst
10 4 (3.25%) Coordinator
10 4 (3.25%) Programme Coordinator
10 4 (3.25%) Python Engineer
10 4 (3.25%) Senior Programme Coordinator
10 4 (3.25%) Software Engineer
Libraries, Frameworks & Software Standards
1 36 (29.27%) CSS
2 34 (27.64%) HTML
3 22 (17.89%) AngularJS
4 20 (16.26%) Redux
4 20 (16.26%) REST
5 19 (15.45%) HTML5
6 16 (13.01%) Sass
7 15 (12.20%) LESS
8 14 (11.38%) Chai
8 14 (11.38%) CSS3
9 10 (8.13%) Enzyme
9 10 (8.13%) React
10 9 (7.32%) Jest
10 9 (7.32%) Node.js
10 9 (7.32%) XML
11 8 (6.50%) GraphQL
12 7 (5.69%) Django
12 7 (5.69%) Gherkin
12 7 (5.69%) Middleware
12 7 (5.69%) Play Framework
Miscellaneous
1 60 (48.78%) Algorithms
2 40 (32.52%) Computer Science
3 31 (25.20%) User Experience
4 18 (14.63%) Analytical Skills
5 6 (4.88%) Fintech
5 6 (4.88%) Hedge funds
5 6 (4.88%) Self-Motivation
6 4 (3.25%) Analytical Mindset
6 4 (3.25%) Data Centre
7 3 (2.44%) Equities
7 3 (2.44%) Greenfield Project
8 2 (1.63%) Bitcoin
8 2 (1.63%) Blog
8 2 (1.63%) Foreign Exchange (FX)
8 2 (1.63%) Management Information System
8 2 (1.63%) Mobile App
8 2 (1.63%) Reinsurance
9 1 (0.81%) Derivative
9 1 (0.81%) Public Cloud
9 1 (0.81%) Taxonomies
Operating Systems
1 8 (6.50%) Unix
2 6 (4.88%) Linux
Processes & Methodologies
1 55 (44.72%) OO
2 52 (42.28%) Agile Software Development
3 37 (30.08%) TDD
4 32 (26.02%) OOD
5 29 (23.58%) Problem-Solving
6 26 (21.14%) OOP
7 24 (19.51%) Front End Development
8 21 (17.07%) BDD
9 20 (16.26%) Test Automation
10 17 (13.82%) Machine Learning
10 17 (13.82%) Project Management
10 17 (13.82%) Scrum
11 15 (12.20%) Business Intelligence
11 15 (12.20%) Continuous Integration
11 15 (12.20%) Mentoring
11 15 (12.20%) Visualisation
12 12 (9.76%) Data Management
13 11 (8.94%) Multithreading
14 10 (8.13%) DevOps
15 9 (7.32%) Microservices
Programming Languages
1 45 (36.59%) JavaScript
2 36 (29.27%) SQL
3 19 (15.45%) Java
3 19 (15.45%) Python
4 15 (12.20%) Go
5 13 (10.57%) TypeScript
6 12 (9.76%) ES6
7 9 (7.32%) C++
7 9 (7.32%) Scala
7 9 (7.32%) T-SQL
8 8 (6.50%) VBA
9 7 (5.69%) C#
10 6 (4.88%) Java 8
11 3 (2.44%) C
11 3 (2.44%) Kotlin
12 2 (1.63%) Groovy
12 2 (1.63%) PHP
12 2 (1.63%) R
12 2 (1.63%) Solidity
13 1 (0.81%) Cython
Qualifications
1 17 (13.82%) Degree
2 4 (3.25%) Computer Science Degree
3 2 (1.63%) Master's Degree
4 1 (0.81%) HND
4 1 (0.81%) PhD
Quality Assurance & Compliance
1 8 (6.50%) Data Quality
2 2 (1.63%) QA
3 1 (0.81%) IFRS
System Software
1 20 (16.26%) Docker
2 2 (1.63%) HDFS
3 1 (0.81%) Apache ZooKeeper
3 1 (0.81%) etcd
3 1 (0.81%) Varnish
Systems Management
1 16 (13.01%) Kubernetes
2 3 (2.44%) Ansible
3 2 (1.63%) Consul
3 2 (1.63%) Opscode Chef
4 1 (0.81%) Docker Swarm
4 1 (0.81%) Terraform
Vendors
1 16 (13.01%) Google
2 9 (7.32%) Twitter
3 8 (6.50%) Microsoft
3 8 (6.50%) SAP
4 6 (4.88%) Oracle
5 4 (3.25%) Tableau
6 2 (1.63%) Alteryx
6 2 (1.63%) RapidMiner
6 2 (1.63%) Teradata
7 1 (0.81%) Bloomberg
7 1 (0.81%) Cognos
7 1 (0.81%) Cypress Semiconductor
7 1 (0.81%) Maconomy
7 1 (0.81%) MicroStrategy
7 1 (0.81%) Perfecto Mobile
7 1 (0.81%) Reuters