Period
to 15 December 2017

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 15 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
England > London
6 months to
15 Dec 2017
Same period 2016 Same period 2015
Rank 229 326 280
Rank change year-on-year +97 -46 -11
Contract jobs citing Data Structures 534 319 392
As % of all contract IT jobs advertised in London 1.12% 0.72% 0.85%
As % of the Miscellaneous category 2.90% 1.98% 2.27%
Number of daily rates quoted 396 233 297
London median daily rate £525 £500 £525
Median daily rate % change year-on-year +5.00% -4.76% +10.53%
10th Percentile £384 £313 £406
90th Percentile £723 £675 £713
England median daily rate £475 £450 £500
% change year-on-year +5.56% -10.00% +17.65%
Number of hourly rates quoted 3 2 5
London median hourly rate £55.00 £32.50 £29.00
Median hourly rate % change year-on-year +69.23% +12.07% -68.22%
10th Percentile £31.30 £31.25 £18.35
90th Percentile £57.50 £33.75 £47.50
England median hourly rate £37.50 £33.25 £22.50
% change year-on-year +12.78% +47.78% -27.88%

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 18392 16140 17275
As % of all contract IT jobs advertised in London 38.73% 36.23% 37.30%
Number of daily rates quoted 13235 11366 12119
London median daily rate £500 £475 £460
Median daily rate % change year-on-year +5.26% +3.26% +2.22%
10th Percentile £313 £294 £275
90th Percentile £688 £650 £650
England median daily rate £450 £428 £425
% change year-on-year +5.26% +0.59% +6.12%
Number of hourly rates quoted 232 258 286
London median hourly rate £20.92 £20.00 £20.71
Median hourly rate % change year-on-year +4.61% -3.40% +15.03%
10th Percentile £12.75 £12.00 £12.01
90th Percentile £44.99 £50.00 £46.38
England median hourly rate £21.30 £20.00 £19.22
% change year-on-year +6.50% +4.06% +9.83%

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 15 December 2017.

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
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing Data Structures in London over the 6 months to 15 December 2017.

Contractor hourly rate histogram 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 15 December 2017. 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 +66 138 £575 +17.95% 23
West London -16 22 £483 +10.29% 10
East London -4 13 £550 -12.00%
South London -27 5 £380 +1.33%
Data Structures
England

For the 6 months to 15 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 London region with a requirement for Data Structures.

1 224 (41.95%) Java
1 224 (41.95%) Agile Software Development
2 190 (35.58%) SQL
3 147 (27.53%) Algorithms
4 131 (24.53%) Finance
5 111 (20.79%) OO
6 107 (20.04%) Multithreading
7 106 (19.85%) TDD
8 102 (19.10%) Linux
9 97 (18.16%) Degree
10 90 (16.85%) Python
11 82 (15.36%) Banking
12 78 (14.61%) Computer Science
13 77 (14.42%) Analytical Skills
14 76 (14.23%) Data Modelling
14 76 (14.23%) C#
14 76 (14.23%) Web Services
15 73 (13.67%) JavaScript
16 72 (13.48%) SQL Server
16 72 (13.48%) Business Intelligence
16 72 (13.48%) Continuous Integration
17 70 (13.11%) Spring
17 70 (13.11%) Front Office
18 69 (12.92%) Amazon AWS
19 62 (11.61%) Software Engineering
20 59 (11.05%) JSON
21 58 (10.86%) Unix
22 57 (10.67%) Scala
23 56 (10.49%) .NET
24 54 (10.11%) Test Automation

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 20 (3.75%) Tomcat
2 19 (3.56%) Apache Spark
3 18 (3.37%) Confluence
4 17 (3.18%) Apache
5 16 (3.00%) IIS
6 10 (1.87%) Apache Solr
6 10 (1.87%) WebSphere
7 9 (1.69%) WebLogic
8 8 (1.50%) Elasticsearch
9 7 (1.31%) SAS
10 4 (0.75%) CMS
11 2 (0.37%) SharePoint
11 2 (0.37%) WebSphere Application Server
12 1 (0.19%) ArcGIS
12 1 (0.19%) BizTalk Server
12 1 (0.19%) Ethereum
12 1 (0.19%) GemFire
12 1 (0.19%) Mule
12 1 (0.19%) Mule ESB
12 1 (0.19%) OpenStack
Applications
1 36 (6.74%) Microsoft Excel
2 11 (2.06%) MS Visio
3 10 (1.87%) Microsoft Office
4 7 (1.31%) InVision
5 4 (0.75%) Microsoft PowerPoint
6 3 (0.56%) SPSS
7 1 (0.19%) Stata
Business Applications
1 9 (1.69%) Unica
2 6 (1.12%) Markit EDM
3 5 (0.94%) SAP MM
3 5 (0.94%) SAP SRM
3 5 (0.94%) SunGard GMI
4 3 (0.56%) Dynamics CRM
4 3 (0.56%) ION MarketView
5 2 (0.37%) MetaTrader
5 2 (0.37%) SAP FI
5 2 (0.37%) SAP PLM
5 2 (0.37%) SAP SD
6 1 (0.19%) Cognos Business Intelligence
6 1 (0.19%) Dynamics AX
6 1 (0.19%) SAP BPC
6 1 (0.19%) SAP CO
6 1 (0.19%) SAP FI/CO
6 1 (0.19%) SAP Oil and Gas
6 1 (0.19%) SAP R/3
6 1 (0.19%) SAP S/4HANA
6 1 (0.19%) Unit4 Business World
Cloud Services
1 69 (12.92%) Amazon AWS
2 24 (4.49%) Microsoft Azure
3 9 (1.69%) GitHub
4 8 (1.50%) AWS CloudFormation
4 8 (1.50%) npm
5 7 (1.31%) Amazon EC2
6 6 (1.12%) Amazon EMR
6 6 (1.12%) Amazon S3
7 5 (0.94%) Amazon Glacier
7 5 (0.94%) Heroku
8 4 (0.75%) SaaS
9 3 (0.56%) Cloud Computing
9 3 (0.56%) Salesforce Sales Cloud
10 2 (0.37%) Dynamics 365
10 2 (0.37%) Firebase
10 2 (0.37%) Google App Engine
10 2 (0.37%) Google Cloud Platform
10 2 (0.37%) Office 365
11 1 (0.19%) IaaS
11 1 (0.19%) PaaS
Communications & Networking
1 12 (2.25%) TCP/IP
2 5 (0.94%) HTTP
3 4 (0.75%) Internet
4 3 (0.56%) SMS
5 2 (0.37%) snoop
6 1 (0.19%) DHCP
6 1 (0.19%) DMS-100
6 1 (0.19%) DNS
6 1 (0.19%) DPNSS
6 1 (0.19%) Kerberos
6 1 (0.19%) PBX
6 1 (0.19%) PSTN
6 1 (0.19%) Q.931
Database & Business Intelligence
1 72 (13.48%) SQL Server
2 45 (8.43%) Relational Database
3 44 (8.24%) Big Data
4 37 (6.93%) NoSQL
5 33 (6.18%) MongoDB
6 30 (5.62%) PostgreSQL
7 26 (4.87%) Apache Cassandra
8 25 (4.68%) Hadoop
9 22 (4.12%) Data Warehouse
10 17 (3.18%) HBase
11 15 (2.81%) KDB
12 14 (2.62%) SQL Server Integration Services
13 13 (2.43%) QlikView
14 12 (2.25%) MySQL
14 12 (2.25%) SQL Server Reporting Services
15 11 (2.06%) Redis
16 10 (1.87%) Oracle Database
17 9 (1.69%) BusinessObjects
17 9 (1.69%) SQL Server Analysis Services
18 8 (1.50%) GIS
Development Applications
1 48 (8.99%) Git (software)
2 47 (8.80%) JIRA
3 23 (4.31%) IntelliJ
3 23 (4.31%) Jenkins
4 19 (3.56%) JUnit
5 17 (3.18%) Visual Studio
5 17 (3.18%) webpack
6 15 (2.81%) Subversion
7 13 (2.43%) Grunt
7 13 (2.43%) gulp
8 10 (1.87%) TestNG
9 9 (1.69%) Maven
10 7 (1.31%) Babel
10 7 (1.31%) Jasmine
10 7 (1.31%) PhantomJS
11 6 (1.12%) Axure RP
11 6 (1.12%) Mockito
11 6 (1.12%) Talend Open Studio
12 5 (0.94%) Mercurial
12 5 (0.94%) Team Foundation Server
General
1 131 (24.53%) Finance
2 82 (15.36%) Banking
3 70 (13.11%) Front Office
4 36 (6.74%) Marketing
5 29 (5.43%) Investment Banking
6 20 (3.75%) Back Office
7 15 (2.81%) Games
7 15 (2.81%) Telecoms
8 14 (2.62%) Manufacturing
9 13 (2.43%) Legal
10 12 (2.25%) Advertising
10 12 (2.25%) Electronics
11 10 (1.87%) Retail
12 8 (1.50%) Financial Institution
13 5 (0.94%) Law
14 3 (0.56%) Private Banking
14 3 (0.56%) Publishing
15 1 (0.19%) Automotive
15 1 (0.19%) Local Government
15 1 (0.19%) Wholesale Banking
Job Titles
1 314 (58.80%) Developer
2 110 (20.60%) Java Developer
3 83 (15.54%) Analyst
4 52 (9.74%) Senior Developer
5 48 (8.99%) C# Developer
6 42 (7.87%) SQL Developer
7 40 (7.49%) Business Analyst
8 31 (5.81%) Data Analyst
9 30 (5.62%) Architect
10 25 (4.68%) Senior Java Developer
11 23 (4.31%) WPF Developer
12 22 (4.12%) Consultant
13 21 (3.93%) C# WPF Developer
13 21 (3.93%) Python Developer
14 19 (3.56%) Software Developer
15 18 (3.37%) Front Office Developer
16 15 (2.81%) Scala Developer
16 15 (2.81%) Software Engineer
17 14 (2.62%) Algorithmic Trading Developer
17 14 (2.62%) Java Engineer
Libraries, Frameworks & Software Standards
1 76 (14.23%) Web Services
2 70 (13.11%) Spring
3 59 (11.05%) JSON
4 56 (10.49%) .NET
5 50 (9.36%) HTML
6 48 (8.99%) CSS
7 42 (7.87%) XML
8 41 (7.68%) Kafka
9 37 (6.93%) HTML5
10 36 (6.74%) REST
11 34 (6.37%) RESTful
12 32 (5.99%) WPF
13 30 (5.62%) AngularJS
14 29 (5.43%) React
14 29 (5.43%) SOAP
15 28 (5.24%) Spring Boot
16 25 (4.68%) WCF
17 20 (3.75%) Flask
18 19 (3.56%) Node.js
19 18 (3.37%) Redux
Miscellaneous
1 147 (27.53%) Algorithms
2 78 (14.61%) Computer Science
3 77 (14.42%) Analytical Skills
4 49 (9.18%) Foreign Exchange (FX)
5 36 (6.74%) User Experience
6 34 (6.37%) Management Information System
7 27 (5.06%) Derivative
8 25 (4.68%) Equities
8 25 (4.68%) Fixed Income
9 23 (4.31%) Hedge funds
10 19 (3.56%) Enterprise Software
10 19 (3.56%) Greenfield Project
11 13 (2.43%) Mobile App
12 11 (2.06%) Reference Data
13 10 (1.87%) Blog
14 8 (1.50%) Market Risk
15 7 (1.31%) Virtual Team
16 5 (0.94%) Client/Server
16 5 (0.94%) Fintech
16 5 (0.94%) Grid Computing
Operating Systems
1 102 (19.10%) Linux
2 58 (10.86%) Unix
3 28 (5.24%) Windows
4 14 (2.62%) Mac OS X
5 6 (1.12%) Apple iOS
6 5 (0.94%) Android
7 2 (0.37%) Ubuntu
8 1 (0.19%) Oracle Linux
8 1 (0.19%) Windows 10
8 1 (0.19%) Windows 7
8 1 (0.19%) Windows Server 2003
Processes & Methodologies
1 224 (41.95%) Agile Software Development
2 111 (20.79%) OO
3 107 (20.04%) Multithreading
4 106 (19.85%) TDD
5 76 (14.23%) Data Modelling
6 72 (13.48%) Business Intelligence
6 72 (13.48%) Continuous Integration
7 62 (11.61%) Software Engineering
8 54 (10.11%) Test Automation
9 51 (9.55%) Analytics
10 48 (8.99%) DevOps
10 48 (8.99%) OOP
11 44 (8.24%) OOD
12 43 (8.05%) Data Architecture
13 42 (7.87%) BDD
13 42 (7.87%) SDLC
14 40 (7.49%) Pair Programming
15 38 (7.12%) Acceptance Criteria
16 37 (6.93%) Data Analysis
16 37 (6.93%) High Availability
Programming Languages
1 224 (41.95%) Java
2 190 (35.58%) SQL
3 90 (16.85%) Python
4 76 (14.23%) C#
5 73 (13.67%) JavaScript
6 57 (10.67%) Scala
7 43 (8.05%) T-SQL
8 40 (7.49%) C++
9 27 (5.06%) Shell Script
10 15 (2.81%) C
11 14 (2.62%) Groovy
12 12 (2.25%) Go
12 12 (2.25%) PL/SQL
12 12 (2.25%) PowerShell
12 12 (2.25%) Ruby
13 11 (2.06%) ES6
14 10 (1.87%) Bash Shell
14 10 (1.87%) R
15 8 (1.50%) Clojure
16 6 (1.12%) TypeScript
Qualifications
1 97 (18.16%) Degree
2 34 (6.37%) Security Cleared
3 26 (4.87%) Computer Science Degree
4 25 (4.68%) PhD
5 15 (2.81%) SC Cleared
6 13 (2.43%) DV Cleared
7 12 (2.25%) BPSS Clearance
8 6 (1.12%) CTC Cleared
8 6 (1.12%) Numerate Degree
9 4 (0.75%) Sun Certification
10 2 (0.37%) DBS Check
10 2 (0.37%) ISEB
10 2 (0.37%) ITIL Certification
10 2 (0.37%) Master's Degree
10 2 (0.37%) Microsoft Certification
11 1 (0.19%) A+ Certification
11 1 (0.19%) PMI Certification
11 1 (0.19%) PMP
11 1 (0.19%) PRINCE2 Practitioner
11 1 (0.19%) SAP Certification
Quality Assurance & Compliance
1 38 (7.12%) Data Quality
2 35 (6.55%) QA
3 13 (2.43%) MiFID
4 8 (1.50%) GDPR
5 3 (0.56%) IFRS
5 3 (0.56%) IFRS 9
6 2 (0.37%) Disclosure Scotland
7 1 (0.19%) PMO
7 1 (0.19%) SLA
System Software
1 34 (6.37%) Docker
2 10 (1.87%) Oracle RAC
3 9 (1.69%) Oracle Clusterware
4 6 (1.12%) Apache ZooKeeper
4 6 (1.12%) etcd
4 6 (1.12%) Varnish
5 2 (0.37%) HDFS
6 1 (0.19%) Active Directory
6 1 (0.19%) VMware Infrastructure
Systems Management
1 14 (2.62%) Kubernetes
2 12 (2.25%) logstash
2 12 (2.25%) Opscode Chef
3 10 (1.87%) Kibana
3 10 (1.87%) Prometheus
4 9 (1.69%) Data Guard
4 9 (1.69%) Oracle Flashback
4 9 (1.69%) Oracle RMAN
5 8 (1.50%) Terraform
6 6 (1.12%) Consul
6 6 (1.12%) ITRS Geneos
7 4 (0.75%) Puppet
8 3 (0.56%) Ansible
9 2 (0.37%) HP Quality Center
10 1 (0.19%) CA Endevor
10 1 (0.19%) Enterprise Manager Cloud Control
10 1 (0.19%) Hadoop YARN
10 1 (0.19%) Oracle Enterprise Manager
Vendors
1 41 (7.68%) Microsoft
2 37 (6.93%) Oracle
3 29 (5.43%) Tableau
4 26 (4.87%) SAP
5 23 (4.31%) Salesforce.com
6 14 (2.62%) IBM
7 12 (2.25%) Cognos
7 12 (2.25%) ServiceNow
8 10 (1.87%) AppDynamics
8 10 (1.87%) Informatica
8 10 (1.87%) Splunk
9 8 (1.50%) DevExpress
10 7 (1.31%) hybris
10 7 (1.31%) Red Hat
11 6 (1.12%) Adobe
11 6 (1.12%) Talend
12 5 (0.94%) CQG
12 5 (0.94%) Fidessa
12 5 (0.94%) SunGard
12 5 (0.94%) Workday