Period
to 17 December 2017

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 17 December 2017 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
17 Dec 2017
Same period 2016 Same period 2015
Rank 140 195 188
Rank change year-on-year +55 -7 +33
Contract jobs citing Data Structures 117 43 72
As % of all contract IT jobs advertised in the City of London 1.64% 0.66% 0.87%
As % of the Miscellaneous category 3.79% 1.64% 2.16%
Number of daily rates quoted 103 29 63
City of London median daily rate £575 £450 £550
Median daily rate % change year-on-year +27.78% -18.18% +2.33%
10th Percentile £376 £347 £463
90th Percentile £813 £675 £763
Central London median daily rate £575 £475 £550
% change year-on-year +21.05% -13.64% +4.76%
Number of hourly rates quoted 1 0 0
City of London median hourly rate £28.00 - -
Central London median hourly rate £28.00 - -

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 3085 2617 3328
As % of all contract IT jobs advertised in the City of London 43.17% 40.32% 40.14%
Number of daily rates quoted 2429 2002 2631
City of London median daily rate £525 £475 £475
Median daily rate % change year-on-year +10.53% - +5.56%
10th Percentile £320 £313 £275
90th Percentile £725 £675 £669
Central London median daily rate £525 £475 £475
% change year-on-year +10.53% - +5.56%
Number of hourly rates quoted 37 29 46
City of London median hourly rate £22.50 £19.00 £19.50
Median hourly rate % change year-on-year +18.42% -2.56% +11.43%
10th Percentile £13.19 £12.56 £12.00
90th Percentile £33.69 £55.00 £26.50
Central London median hourly rate £21.62 £18.45 £19.50
% change year-on-year +17.18% -5.38% +11.43%

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 17 December 2017.

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 17 December 2017, IT contractor jobs citing Data Structures also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for Data Structures.

1 56 (47.86%) Algorithms
2 42 (35.90%) SQL
2 42 (35.90%) Degree
3 41 (35.04%) Java
4 37 (31.62%) Agile Software Development
5 36 (30.77%) Linux
6 31 (26.50%) Finance
7 30 (25.64%) OO
7 30 (25.64%) C#
8 29 (24.79%) Computer Science
9 28 (23.93%) Multithreading
9 28 (23.93%) Web Services
10 27 (23.08%) .NET
11 26 (22.22%) Front Office
11 26 (22.22%) Analytical Skills
12 25 (21.37%) C++
12 25 (21.37%) TDD
13 24 (20.51%) SQL Server
14 23 (19.66%) T-SQL
14 23 (19.66%) Low Latency
15 22 (18.80%) OOP
16 21 (17.95%) PhD
16 21 (17.95%) OOD
16 21 (17.95%) Algorithmic Trading
16 21 (17.95%) Market Making
17 20 (17.09%) WPF
18 19 (16.24%) WCF
18 19 (16.24%) Foreign Exchange (FX)
19 18 (15.38%) WinForms
20 17 (14.53%) Amazon AWS

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 4 (3.42%) IIS
2 3 (2.56%) Confluence
2 3 (2.56%) Tomcat
3 2 (1.71%) Apache Spark
4 1 (0.85%) Apache
4 1 (0.85%) GemFire
Applications
1 6 (5.13%) Microsoft Excel
2 2 (1.71%) Microsoft Office
3 1 (0.85%) MS Visio
Business Applications
1 2 (1.71%) Markit EDM
2 1 (0.85%) Dynamics AX
2 1 (0.85%) Dynamics CRM
2 1 (0.85%) Unit4 Business World
Cloud Services
1 17 (14.53%) Amazon AWS
2 8 (6.84%) Microsoft Azure
3 3 (2.56%) AWS CloudFormation
4 2 (1.71%) Cloud Computing
4 2 (1.71%) npm
5 1 (0.85%) Dynamics 365
Communications & Networking
1 2 (1.71%) snoop
2 1 (0.85%) Internet
Database & Business Intelligence
1 24 (20.51%) SQL Server
2 11 (9.40%) KDB
3 9 (7.69%) QlikView
4 7 (5.98%) Relational Database
5 4 (3.42%) Data Warehouse
5 4 (3.42%) Redis
5 4 (3.42%) SQL Server Reporting Services
6 3 (2.56%) BusinessObjects
6 3 (2.56%) SQL Server Integration Services
7 2 (1.71%) Azure SQL Database
7 2 (1.71%) Big Data
7 2 (1.71%) Crystal Reports
7 2 (1.71%) Hadoop
7 2 (1.71%) Microsoft Analysis Services
7 2 (1.71%) PostgreSQL
7 2 (1.71%) RDBMS
7 2 (1.71%) SQL Server 2016
7 2 (1.71%) SQL Server Analysis Services
8 1 (0.85%) Impala
8 1 (0.85%) Qlik Sense
Development Applications
1 10 (8.55%) JIRA
2 9 (7.69%) Jenkins
3 8 (6.84%) Grunt
3 8 (6.84%) gulp
3 8 (6.84%) Subversion
4 7 (5.98%) Git (software)
5 6 (5.13%) webpack
6 5 (4.27%) Jasmine
6 5 (4.27%) PhantomJS
7 3 (2.56%) JUnit
7 3 (2.56%) Visual Studio
8 2 (1.71%) IntelliJ
8 2 (1.71%) LINQPad
8 2 (1.71%) Maven
8 2 (1.71%) ReSharper
9 1 (0.85%) Babel
9 1 (0.85%) Gradle
9 1 (0.85%) Selenium
9 1 (0.85%) TestNG
9 1 (0.85%) Vagrant
General
1 31 (26.50%) Finance
2 26 (22.22%) Front Office
3 16 (13.68%) Banking
4 8 (6.84%) Legal
5 4 (3.42%) Law
5 4 (3.42%) Marketing
6 3 (2.56%) Investment Banking
7 2 (1.71%) Advertising
7 2 (1.71%) Financial Institution
7 2 (1.71%) Retail
8 1 (0.85%) Back Office
8 1 (0.85%) Electronics
8 1 (0.85%) Manufacturing
8 1 (0.85%) Telecoms
Job Titles
1 74 (63.25%) Developer
2 23 (19.66%) C# Developer
3 16 (13.68%) Analyst
3 16 (13.68%) Java Developer
4 14 (11.97%) Algorithmic Trading Developer
5 13 (11.11%) WPF Developer
6 12 (10.26%) .NET Developer
6 12 (10.26%) Senior Developer
6 12 (10.26%) SQL Developer
7 11 (9.40%) C# WPF Developer
8 10 (8.55%) C# .NET Developer
9 8 (6.84%) Data Analyst
10 7 (5.98%) C++ Developer
10 7 (5.98%) C++/Java Developer
10 7 (5.98%) Java Engineer
10 7 (5.98%) Senior SQL Developer
11 6 (5.13%) Agile Developer
12 5 (4.27%) DevOps Engineer
12 5 (4.27%) Front End Developer (Client-Side Developer)
12 5 (4.27%) Full Stack Developer
Libraries, Frameworks & Software Standards
1 28 (23.93%) Web Services
2 27 (23.08%) .NET
3 20 (17.09%) WPF
4 19 (16.24%) WCF
5 18 (15.38%) WinForms
6 11 (9.40%) Spring
7 10 (8.55%) CSS
8 9 (7.69%) AngularJS
8 9 (7.69%) React
9 8 (6.84%) Hibernate
9 8 (6.84%) J2EE
9 8 (6.84%) XML
10 7 (5.98%) REST
11 6 (5.13%) JSON
12 5 (4.27%) .NET Framework
12 5 (4.27%) FIX Protocol
12 5 (4.27%) Jest
12 5 (4.27%) LESS
12 5 (4.27%) Sass
13 4 (3.42%) Redux
Miscellaneous
1 56 (47.86%) Algorithms
2 29 (24.79%) Computer Science
3 26 (22.22%) Analytical Skills
4 19 (16.24%) Foreign Exchange (FX)
5 16 (13.68%) Hedge funds
6 7 (5.98%) User Experience
7 6 (5.13%) Derivative
7 6 (5.13%) Fixed Income
8 5 (4.27%) Equities
8 5 (4.27%) Mobile App
9 4 (3.42%) Management Information System
10 3 (2.56%) Greenfield Project
11 2 (1.71%) Linux Command Line
12 1 (0.85%) Equity Derivative
12 1 (0.85%) Fintech
12 1 (0.85%) Market Risk
12 1 (0.85%) Reference Data
12 1 (0.85%) Social Media
12 1 (0.85%) Taxonomies
12 1 (0.85%) Virtual Team
Operating Systems
1 36 (30.77%) Linux
2 7 (5.98%) Unix
3 6 (5.13%) Windows
4 2 (1.71%) Ubuntu
Processes & Methodologies
1 37 (31.62%) Agile Software Development
2 30 (25.64%) OO
3 28 (23.93%) Multithreading
4 25 (21.37%) TDD
5 23 (19.66%) Low Latency
6 22 (18.80%) OOP
7 21 (17.95%) Algorithmic Trading
7 21 (17.95%) Market Making
7 21 (17.95%) OOD
8 16 (13.68%) Analytics
9 11 (9.40%) Data Modelling
9 11 (9.40%) FX Algorithmic Trading
10 9 (7.69%) Build Automation
10 9 (7.69%) Business Intelligence
10 9 (7.69%) DevOps
10 9 (7.69%) Pair Programming
11 8 (6.84%) Data Analysis
11 8 (6.84%) Scrum
11 8 (6.84%) Software Engineering
11 8 (6.84%) UML
Programming Languages
1 42 (35.90%) SQL
2 41 (35.04%) Java
3 30 (25.64%) C#
4 25 (21.37%) C++
5 23 (19.66%) T-SQL
6 16 (13.68%) Python
7 15 (12.82%) JavaScript
8 6 (5.13%) Bash Shell
8 6 (5.13%) Shell Script
9 5 (4.27%) Ruby
10 4 (3.42%) Scala
11 3 (2.56%) ES6
12 2 (1.71%) C
12 2 (1.71%) PHP
13 1 (0.85%) Apex Code
13 1 (0.85%) ECMAScript
13 1 (0.85%) Haskell
13 1 (0.85%) PL/SQL
13 1 (0.85%) SOQL
13 1 (0.85%) TypeScript
Qualifications
1 42 (35.90%) Degree
2 21 (17.95%) PhD
3 6 (5.13%) Computer Science Degree
4 2 (1.71%) ISEB
4 2 (1.71%) Microsoft Certification
5 1 (0.85%) BPSS Clearance
5 1 (0.85%) ITIL Certification
5 1 (0.85%) SC Cleared
5 1 (0.85%) Security Cleared
Quality Assurance & Compliance
1 7 (5.98%) QA
2 4 (3.42%) Data Quality
3 3 (2.56%) GDPR
3 3 (2.56%) MiFID
System Software
1 7 (5.98%) Docker
2 3 (2.56%) Apache ZooKeeper
2 3 (2.56%) etcd
2 3 (2.56%) Varnish
Systems Management
1 10 (8.55%) Opscode Chef
2 4 (3.42%) Puppet
3 3 (2.56%) Consul
3 3 (2.56%) Terraform
4 2 (1.71%) Ansible
5 1 (0.85%) HP Quality Center
Vendors
1 11 (9.40%) Microsoft
2 7 (5.98%) Red Hat
3 5 (4.27%) ServiceNow
4 3 (2.56%) DevExpress
4 3 (2.56%) SAP
4 3 (2.56%) Tableau
5 2 (1.71%) IBM
5 2 (1.71%) Infragistics
5 2 (1.71%) RedGate
5 2 (1.71%) Salesforce.com
5 2 (1.71%) Syncfusion
5 2 (1.71%) Telerik
6 1 (0.85%) CA Agile Central
6 1 (0.85%) Facebook
6 1 (0.85%) Informatica
6 1 (0.85%) MicroStrategy
6 1 (0.85%) Pardot
6 1 (0.85%) Solace
6 1 (0.85%) TIBCO
6 1 (0.85%) Workday