Period
to 20 October 2018

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 20 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
Central London > City of London
6 months to
20 Oct 2018
Same period 2017 Same period 2016
Rank 174 146 196
Rank change year-on-year -28 +50 +6
Contract jobs citing Data Structures 78 102 43
As % of all contract IT jobs advertised in the City of London 1.13% 1.49% 0.65%
As % of the Miscellaneous category 2.60% 3.39% 1.54%
Number of daily rates quoted 63 85 31
City of London median daily rate £500 £525 £450
Median daily rate % change year-on-year -4.76% +16.67% -20.00%
10th Percentile £421 £345 £363
90th Percentile £670 £813 £675
Central London median daily rate £500 £525 £525
% change year-on-year -4.76% - -4.55%
Number of hourly rates quoted 4 1 0
City of London median hourly rate £37.09 £28.00 -
Median hourly rate % change year-on-year +32.46% - -
Central 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 the City of London with a requirement for generic IT skills.

All Generic IT Skills
City of London
Contract vacancies with a requirement for generic IT skills 3,003 3,013 2,788
As % of all contract IT jobs advertised in the City of London 43.33% 43.93% 41.91%
Number of daily rates quoted 2,335 2,326 2,207
City of London median daily rate £525 £525 £475
Median daily rate % change year-on-year - +10.53% -
10th Percentile £306 £320 £313
90th Percentile £713 £700 £675
Central London median daily rate £525 £525 £475
% change year-on-year - +10.53% -
Number of hourly rates quoted 56 36 32
City of London median hourly rate £19.25 £20.85 £19.00
Median hourly rate % change year-on-year -7.67% +9.74% -9.52%
10th Percentile £13.16 £12.64 £11.25
90th Percentile £37.09 £33.25 £82.00
Central London median hourly rate £19.25 £20.00 £17.50
% change year-on-year -3.75% +14.29% -15.32%

Data Structures
Job Vacancy Trend in the City of London

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

Job vacancy trend for Data Structures in the City of London

Data Structures
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Data Structures in the City of London

Data Structures
Contractor Daily Rate Histogram in the City of London

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

Contractor daily rate histogram for Data Structures in the City of London

Data Structures
Contractor Hourly Rate Trend in the City of London

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

Contractor hourly rate trend for Data Structures in the City of London

For the 6 months to 20 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 City of London region with a requirement for Data Structures.

1 30 (38.46%) SQL
1 30 (38.46%) Agile Software Development
2 25 (32.05%) OO
3 23 (29.49%) Finance
4 22 (28.21%) JavaScript
4 22 (28.21%) Algorithms
5 20 (25.64%) OOP
6 19 (24.36%) Java
7 18 (23.08%) CSS
7 18 (23.08%) HTML
7 18 (23.08%) TDD
8 17 (21.79%) Front End Development
9 15 (19.23%) Project Management
9 15 (19.23%) Git (software)
9 15 (19.23%) BDD
9 15 (19.23%) AngularJS
10 14 (17.95%) Python
10 14 (17.95%) User Experience
11 13 (16.67%) Mentoring
11 13 (16.67%) Microsoft Excel
11 13 (16.67%) Data Warehouse
11 13 (16.67%) Business Intelligence
11 13 (16.67%) Sass
11 13 (16.67%) HTML5
12 12 (15.38%) Degree
12 12 (15.38%) LESS
12 12 (15.38%) SQL Server
13 11 (14.10%) Data Management
13 11 (14.10%) TypeScript
14 10 (12.82%) Computer Science

Data Structures
Co-occurring IT Skills in the City of 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 3 (3.85%) IPython
2 2 (2.56%) Apache Spark
2 2 (2.56%) Confluence
3 1 (1.28%) Apache Pig
3 1 (1.28%) CMS
3 1 (1.28%) Drupal
3 1 (1.28%) Ethereum
3 1 (1.28%) SAS
3 1 (1.28%) WordPress
Applications
1 13 (16.67%) Microsoft Excel
Business Applications
1 2 (2.56%) Distributed Ledger
1 2 (2.56%) SAP Oil and Gas
2 1 (1.28%) Dynamics NAV
2 1 (1.28%) Markit EDM
2 1 (1.28%) SAP MM
2 1 (1.28%) SAP R/3
Cloud Services
1 10 (12.82%) Amazon AWS
2 8 (10.26%) Microsoft Azure
3 4 (5.13%) GitHub
4 3 (3.85%) OpenShift
5 1 (1.28%) AWS CloudFormation
5 1 (1.28%) AWS CodePipeline
5 1 (1.28%) BrowserStack
5 1 (1.28%) Google Cloud Platform
5 1 (1.28%) Sauce Labs
Communications & Networking
1 3 (3.85%) AMQP
1 3 (3.85%) Internet
1 3 (3.85%) MQTT
2 1 (1.28%) HTTP
2 1 (1.28%) HTTPS
2 1 (1.28%) IPFS
Database & Business Intelligence
1 13 (16.67%) Data Warehouse
2 12 (15.38%) SQL Server
3 8 (10.26%) Power BI
4 7 (8.97%) NoSQL
5 6 (7.69%) SQL Server 2016
5 6 (7.69%) SQL Server Analysis Services
5 6 (7.69%) SQL Server Integration Services
6 5 (6.41%) BusinessObjects
6 5 (6.41%) PostgreSQL
6 5 (6.41%) Relational Database
7 4 (5.13%) Blockchain
7 4 (5.13%) Enterprise Data Warehouse
7 4 (5.13%) Microsoft Analysis Services
7 4 (5.13%) MongoDB
7 4 (5.13%) Redis
7 4 (5.13%) SQL Server Reporting Services
8 3 (3.85%) Big Data
8 3 (3.85%) Biml
8 3 (3.85%) RDBMS
9 1 (1.28%) MS Access
Development Applications
1 15 (19.23%) Git (software)
2 6 (7.69%) Jenkins
2 6 (7.69%) Subversion
3 4 (5.13%) Cucumber
3 4 (5.13%) Jasmine
3 4 (5.13%) JIRA
4 3 (3.85%) GoogleTest
4 3 (3.85%) Grunt
4 3 (3.85%) gulp
4 3 (3.85%) JUnit
5 2 (2.56%) Hudson
5 2 (2.56%) Mocha
5 2 (2.56%) PhantomJS
5 2 (2.56%) PowerDesigner
5 2 (2.56%) TestNG
6 1 (1.28%) Gerrit
6 1 (1.28%) JBehave
6 1 (1.28%) Selenium
6 1 (1.28%) Team Foundation Server
6 1 (1.28%) WebDriver
General
1 23 (29.49%) Finance
2 8 (10.26%) Banking
3 5 (6.41%) Investment Banking
4 4 (5.13%) Front Office
5 3 (3.85%) Telecoms
6 1 (1.28%) Back Office
6 1 (1.28%) General Ledger
6 1 (1.28%) Manufacturing
6 1 (1.28%) Retail
Job Titles
1 46 (58.97%) Developer
2 15 (19.23%) Front End Developer (Client-Side Developer)
3 11 (14.10%) Analyst
3 11 (14.10%) Java Developer
3 11 (14.10%) Lead Developer
4 7 (8.97%) Python Developer
5 6 (7.69%) React Developer
6 5 (6.41%) Business Intelligence Developer
6 5 (6.41%) Data Engineer
6 5 (6.41%) Senior Developer
7 4 (5.13%) Business Analyst
7 4 (5.13%) Coordinator
7 4 (5.13%) Data Analyst
7 4 (5.13%) Programme Coordinator
7 4 (5.13%) Python Engineer
7 4 (5.13%) Senior Programme Coordinator
7 4 (5.13%) Software Engineer
8 3 (3.85%) SSAS Developer
8 3 (3.85%) SSIS Developer
8 3 (3.85%) T-SQL Developer
Libraries, Frameworks & Software Standards
1 18 (23.08%) CSS
1 18 (23.08%) HTML
2 15 (19.23%) AngularJS
3 13 (16.67%) HTML5
3 13 (16.67%) Sass
4 12 (15.38%) LESS
5 9 (11.54%) Redux
5 9 (11.54%) XML
6 8 (10.26%) CSS3
7 6 (7.69%) Kafka
7 6 (7.69%) React
8 4 (5.13%) Flask
8 4 (5.13%) Jest
8 4 (5.13%) jQuery
8 4 (5.13%) JSON
8 4 (5.13%) REST
9 3 (3.85%) Node.js
9 3 (3.85%) NumPy
9 3 (3.85%) RESTful
9 3 (3.85%) Twitter Bootstrap
Miscellaneous
1 22 (28.21%) Algorithms
2 14 (17.95%) User Experience
3 10 (12.82%) Computer Science
4 6 (7.69%) Analytical Skills
4 6 (7.69%) Fintech
5 5 (6.41%) Hedge funds
6 4 (5.13%) Analytical Mindset
6 4 (5.13%) Self-Motivation
7 3 (3.85%) Client/Server
7 3 (3.85%) Data Centre
7 3 (3.85%) Equities
8 2 (2.56%) Bitcoin
8 2 (2.56%) Blog
8 2 (2.56%) Foreign Exchange (FX)
8 2 (2.56%) Reinsurance
9 1 (1.28%) Greenfield Project
9 1 (1.28%) Management Information System
9 1 (1.28%) Mobile App
9 1 (1.28%) Replication
9 1 (1.28%) Taxonomies
Operating Systems
1 8 (10.26%) Linux
Processes & Methodologies
1 30 (38.46%) Agile Software Development
2 25 (32.05%) OO
3 20 (25.64%) OOP
4 18 (23.08%) TDD
5 17 (21.79%) Front End Development
6 15 (19.23%) BDD
6 15 (19.23%) Project Management
7 13 (16.67%) Business Intelligence
7 13 (16.67%) Mentoring
8 11 (14.10%) Data Management
9 10 (12.82%) Test Automation
9 10 (12.82%) Visualisation
10 8 (10.26%) Scrum
11 7 (8.97%) Low Latency
12 6 (7.69%) DevOps
12 6 (7.69%) ETL
12 6 (7.69%) Problem-Solving
12 6 (7.69%) Software Engineering
13 5 (6.41%) Data Science
13 5 (6.41%) OOD
Programming Languages
1 30 (38.46%) SQL
2 22 (28.21%) JavaScript
3 19 (24.36%) Java
4 14 (17.95%) Python
5 11 (14.10%) TypeScript
6 10 (12.82%) C++
7 8 (10.26%) T-SQL
7 8 (10.26%) VBA
8 6 (7.69%) Java 8
9 5 (6.41%) C#
10 3 (3.85%) C
10 3 (3.85%) Cython
10 3 (3.85%) Kotlin
11 2 (2.56%) ES6
11 2 (2.56%) Go
11 2 (2.56%) Groovy
11 2 (2.56%) PHP
11 2 (2.56%) R
11 2 (2.56%) Scala
11 2 (2.56%) Solidity
Qualifications
1 12 (15.38%) Degree
2 4 (5.13%) Computer Science Degree
3 2 (2.56%) Master's Degree
4 1 (1.28%) HND
4 1 (1.28%) PhD
Quality Assurance & Compliance
1 7 (8.97%) Data Quality
2 2 (2.56%) QA
3 1 (1.28%) IFRS
System Software
1 7 (8.97%) Docker
2 1 (1.28%) Apache ZooKeeper
2 1 (1.28%) etcd
2 1 (1.28%) Varnish
Systems Management
1 4 (5.13%) Kubernetes
2 3 (3.85%) Ansible
3 2 (2.56%) Consul
4 1 (1.28%) Docker Swarm
4 1 (1.28%) Opscode Chef
4 1 (1.28%) Terraform
Vendors
1 7 (8.97%) Microsoft
2 3 (3.85%) Google
2 3 (3.85%) Oracle
2 3 (3.85%) SAP
3 2 (2.56%) Tableau
4 1 (1.28%) Cognos
4 1 (1.28%) Cypress Semiconductor
4 1 (1.28%) Maconomy
4 1 (1.28%) MicroStrategy
4 1 (1.28%) Perfecto Mobile
4 1 (1.28%) Teradata