Period
to 14 December 2018

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 14 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
England > London
6 months to
14 Dec 2018
Same period 2017 Same period 2016
Rank 251 235 336
Rank change year-on-year -16 +101 -50
Contract jobs citing Data Structures 513 540 318
As % of all contract IT jobs advertised in London 1.10% 1.14% 0.71%
As % of the Miscellaneous category 2.94% 2.96% 1.97%
Number of daily rates quoted 363 401 232
London median daily rate £550 £525 £500
Median daily rate % change year-on-year +4.76% +5.00% -4.76%
10th Percentile £409 £388 £313
90th Percentile £750 £720 £675
England median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% -10.00%
Number of hourly rates quoted 5 3 2
London median hourly rate £37.09 £55.00 £32.50
Median hourly rate % change year-on-year -32.56% +69.23% +12.07%
England median hourly rate £39.50 £37.50 £33.25
% change year-on-year +5.33% +12.78% +47.78%

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 17,421 18,240 16,142
As % of all contract IT jobs advertised in London 37.21% 38.38% 36.19%
Number of daily rates quoted 12,574 13,086 11,347
London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £315 £313 £288
90th Percentile £700 £688 £650
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% -
Number of hourly rates quoted 273 238 262
London median hourly rate £23.13 £21.40 £19.71
Median hourly rate % change year-on-year +8.08% +8.57% -2.67%
10th Percentile £13.00 £12.75 £11.75
90th Percentile £53.75 £47.83 £50.00
England median hourly rate £20.25 £20.66 £20.00
% change year-on-year -1.98% +3.28% +5.10%

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 14 December 2018.

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
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 14 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
Central London -15 140 £525 -8.70% 79
East London -22 16 £575 +4.55% 12
South London -11 12 £420 +10.53% 2
West London -9 11 £550 +13.99% 31
North London - 1 £625 - 1
Data Structures
England

For the 6 months to 14 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 London region with a requirement for Data Structures.

1 238 (46.39%) Algorithms
2 185 (36.06%) Agile Software Development
3 176 (34.31%) OO
4 157 (30.60%) Java
4 157 (30.60%) Finance
5 155 (30.21%) SQL
6 142 (27.68%) JavaScript
7 132 (25.73%) Python
8 125 (24.37%) Computer Science
9 111 (21.64%) Amazon AWS
10 109 (21.25%) TDD
11 97 (18.91%) HTML
12 93 (18.13%) OOD
13 91 (17.74%) Analytical Skills
13 91 (17.74%) Problem-Solving
14 88 (17.15%) CSS
15 84 (16.37%) Git (software)
16 76 (14.81%) Degree
17 75 (14.62%) Data Modelling
18 73 (14.23%) Multithreading
19 70 (13.65%) C#
20 69 (13.45%) User Experience
21 67 (13.06%) Test Automation
22 66 (12.87%) REST
23 65 (12.67%) C++
24 64 (12.48%) Redux
25 63 (12.28%) OOP
26 62 (12.09%) Analytics
27 61 (11.89%) Docker
28 60 (11.70%) Business Intelligence

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 37 (7.21%) Apache Spark
2 23 (4.48%) Apache
3 18 (3.51%) IPython
4 15 (2.92%) Confluence
5 9 (1.75%) Apache Pig
6 8 (1.56%) Elasticsearch
7 5 (0.97%) CMS
8 4 (0.78%) Apache Solr
8 4 (0.78%) IIS
8 4 (0.78%) WebLogic
9 3 (0.58%) OpenStack
9 3 (0.58%) SAS
9 3 (0.58%) SharePoint
10 2 (0.39%) Ethereum
10 2 (0.39%) Mule
10 2 (0.39%) WebSphere
11 1 (0.19%) Drupal
11 1 (0.19%) Kentico
11 1 (0.19%) Tomcat
11 1 (0.19%) WordPress
Applications
1 25 (4.87%) Microsoft Excel
2 7 (1.36%) MS Visio
2 7 (1.36%) Spreadsheet
3 3 (0.58%) Adobe Illustrator
3 3 (0.58%) InVision
3 3 (0.58%) Photoshop
4 1 (0.19%) Chatbot
Business Applications
1 8 (1.56%) SAP Oil and Gas
2 4 (0.78%) SAP MM
2 4 (0.78%) SAP R/3
3 3 (0.58%) Distributed Ledger
3 3 (0.58%) Salesforce.com CRM
4 2 (0.39%) Oracle EBS
4 2 (0.39%) SAP S/4HANA
5 1 (0.19%) Dynamics CRM
5 1 (0.19%) HFM
5 1 (0.19%) Hyperion Planning
5 1 (0.19%) Maximo
5 1 (0.19%) Oracle Assets
5 1 (0.19%) Oracle EBS R12
5 1 (0.19%) Oracle ERP
5 1 (0.19%) Oracle Financials
5 1 (0.19%) Oracle Payables
5 1 (0.19%) Oracle Receivables
5 1 (0.19%) SAP FI
5 1 (0.19%) SAP MDG
Cloud Services
1 111 (21.64%) Amazon AWS
2 55 (10.72%) Microsoft Azure
3 31 (6.04%) GitHub
4 29 (5.65%) Google Cloud Platform
5 21 (4.09%) Heroku
6 16 (3.12%) Amazon S3
7 10 (1.95%) PaaS
8 9 (1.75%) OpenShift
9 8 (1.56%) Google App Engine
9 8 (1.56%) npm
10 6 (1.17%) BrowserStack
10 6 (1.17%) Cloud Computing
10 6 (1.17%) Sauce Labs
11 5 (0.97%) Amazon EC2
12 4 (0.78%) Amazon Kinesis
12 4 (0.78%) AWS Lambda
12 4 (0.78%) IaaS
12 4 (0.78%) Serverless
13 3 (0.58%) Azure Active Directory
13 3 (0.58%) Dynamics 365
Communications & Networking
1 21 (4.09%) HTTP
2 10 (1.95%) Internet
2 10 (1.95%) TCP/IP
3 7 (1.36%) HTTPS
4 6 (1.17%) AMQP
4 6 (1.17%) MQTT
5 5 (0.97%) Firewall
6 4 (0.78%) BIG-IP
6 4 (0.78%) Intranet
6 4 (0.78%) NetScaler
7 2 (0.39%) IPFS
8 1 (0.19%) DMZ
8 1 (0.19%) Intrusion Detection
8 1 (0.19%) Kerberos
8 1 (0.19%) VoIP
8 1 (0.19%) VPN
Database & Business Intelligence
1 53 (10.33%) Data Warehouse
2 52 (10.14%) NoSQL
3 44 (8.58%) Big Data
4 43 (8.38%) SQL Server
5 42 (8.19%) Relational Database
6 33 (6.43%) Hadoop
7 26 (5.07%) Apache Hive
7 26 (5.07%) PostgreSQL
8 23 (4.48%) Power BI
9 21 (4.09%) SQL Server Integration Services
10 20 (3.90%) SQL Server Analysis Services
11 19 (3.70%) MongoDB
12 15 (2.92%) Apache Cassandra
13 13 (2.53%) Data Lake
13 13 (2.53%) SQL Server Reporting Services
14 11 (2.14%) BusinessObjects
14 11 (2.14%) Redis
15 10 (1.95%) MySQL
16 8 (1.56%) OLTP
16 8 (1.56%) SAP HANA
Development Applications
1 84 (16.37%) Git (software)
2 44 (8.58%) Jenkins
3 31 (6.04%) webpack
4 24 (4.68%) JIRA
5 23 (4.48%) PostCSS
6 21 (4.09%) JUnit
7 18 (3.51%) Maven
8 17 (3.31%) Cucumber
9 15 (2.92%) Selenium
10 11 (2.14%) Jasmine
11 10 (1.95%) Bitbucket
12 9 (1.75%) Hudson
12 9 (1.75%) JMeter
13 8 (1.56%) Grunt
13 8 (1.56%) gulp
13 8 (1.56%) Subversion
14 7 (1.36%) ERwin
14 7 (1.36%) Protractor
14 7 (1.36%) TeamCity
15 6 (1.17%) TestNG
General
1 157 (30.60%) Finance
2 51 (9.94%) Banking
3 41 (7.99%) Front Office
4 33 (6.43%) Telecoms
5 17 (3.31%) Marketing
6 15 (2.92%) Investment Banking
7 12 (2.34%) Legal
8 11 (2.14%) Games
9 8 (1.56%) Manufacturing
9 8 (1.56%) Retail
10 4 (0.78%) Advertising
11 3 (0.58%) Electronics
11 3 (0.58%) General Ledger
11 3 (0.58%) Pharmaceutical
12 2 (0.39%) Arabic Language
12 2 (0.39%) Financial Institution
12 2 (0.39%) French Language
12 2 (0.39%) German Language
13 1 (0.19%) Back Office
13 1 (0.19%) Publishing
Job Titles
1 339 (66.08%) Developer
2 90 (17.54%) Java Developer
3 49 (9.55%) Python Developer
3 49 (9.55%) Senior Developer
4 42 (8.19%) React Developer
5 39 (7.60%) Analyst
6 36 (7.02%) Front End Developer (Client-Side Developer)
7 28 (5.46%) Architect
8 27 (5.26%) C# Developer
8 27 (5.26%) Data Engineer
9 25 (4.87%) Front Office Developer
10 23 (4.48%) Quantitative Developer
11 20 (3.90%) Data Architect
12 19 (3.70%) Lead Developer
13 15 (2.92%) Senior Java Developer
13 15 (2.92%) Software Developer
13 15 (2.92%) SQL Developer
14 14 (2.73%) Digital Developer
14 14 (2.73%) Scala Developer
15 13 (2.53%) Full Stack Developer
Libraries, Frameworks & Software Standards
1 97 (18.91%) HTML
2 88 (17.15%) CSS
3 66 (12.87%) REST
4 64 (12.48%) Redux
5 49 (9.55%) Kafka
6 46 (8.97%) Node.js
7 45 (8.77%) AngularJS
8 37 (7.21%) .NET
8 37 (7.21%) HTML5
8 37 (7.21%) RESTful
9 36 (7.02%) JSON
9 36 (7.02%) React
9 36 (7.02%) Spring
9 36 (7.02%) Web Services
10 30 (5.85%) SOAP
11 29 (5.65%) XML
12 24 (4.68%) Chai
12 24 (4.68%) Flask
13 23 (4.48%) jQuery
14 22 (4.29%) Enzyme
Miscellaneous
1 238 (46.39%) Algorithms
2 91 (17.74%) Analytical Skills
3 69 (13.45%) User Experience
4 34 (6.63%) Hedge funds
5 28 (5.46%) Fintech
5 28 (5.46%) Mobile App
6 21 (4.09%) Self-Motivation
7 20 (3.90%) Cloud Native
7 20 (3.90%) Fixed Income
7 20 (3.90%) Management Information System
8 18 (3.51%) Client/Server
8 18 (3.51%) Equities
8 18 (3.51%) Foreign Exchange (FX)
9 17 (3.31%) Greenfield Project
10 13 (2.53%) Derivative
11 11 (2.14%) Public Cloud
12 9 (1.75%) Analytical Mindset
13 7 (1.36%) Data Centre
13 7 (1.36%) Private Cloud
14 6 (1.17%) Market Risk
Operating Systems
1 56 (10.92%) Linux
2 27 (5.26%) Apple iOS
3 25 (4.87%) Unix
4 22 (4.29%) Android
5 17 (3.31%) Windows
6 4 (0.78%) Red Hat Enterprise Linux
6 4 (0.78%) Windows Server
7 3 (0.58%) CentOS
7 3 (0.58%) Mac OS
7 3 (0.58%) Windows 7
7 3 (0.58%) Windows 8
8 2 (0.39%) DC/OS
8 2 (0.39%) Mac OS X
Processes & Methodologies
1 185 (36.06%) Agile Software Development
2 176 (34.31%) OO
3 125 (24.37%) Computer Science
4 109 (21.25%) TDD
5 93 (18.13%) OOD
6 91 (17.74%) Problem-Solving
7 75 (14.62%) Data Modelling
8 73 (14.23%) Multithreading
9 67 (13.06%) Test Automation
10 63 (12.28%) OOP
11 62 (12.09%) Analytics
12 60 (11.70%) Business Intelligence
13 55 (10.72%) Continuous Integration
14 53 (10.33%) DevOps
14 53 (10.33%) Front End Development
15 47 (9.16%) Software Engineering
16 43 (8.38%) BDD
16 43 (8.38%) ETL
17 42 (8.19%) Microservices
18 41 (7.99%) Scrum
Programming Languages
1 157 (30.60%) Java
2 155 (30.21%) SQL
3 142 (27.68%) JavaScript
4 132 (25.73%) Python
5 70 (13.65%) C#
6 65 (12.67%) C++
7 57 (11.11%) Scala
8 44 (8.58%) TypeScript
9 43 (8.38%) ES6
10 26 (5.07%) Apple Swift
10 26 (5.07%) Java 8
11 21 (4.09%) Rust
12 18 (3.51%) Cython
13 17 (3.31%) Go
14 14 (2.73%) PHP
14 14 (2.73%) T-SQL
15 11 (2.14%) PL/SQL
15 11 (2.14%) R
15 11 (2.14%) VBA
16 10 (1.95%) Bash Shell
Qualifications
1 76 (14.81%) Degree
2 36 (7.02%) Computer Science Degree
3 24 (4.68%) Security Cleared
4 22 (4.29%) SC Cleared
5 11 (2.14%) Master's Degree
6 4 (0.78%) DV Cleared
7 3 (0.58%) MCSA
7 3 (0.58%) Microsoft Certification
7 3 (0.58%) PhD
8 2 (0.39%) ACCA
8 2 (0.39%) IIBA
9 1 (0.19%) CCSP
9 1 (0.19%) CISA
9 1 (0.19%) Cisco Certification
9 1 (0.19%) CISM
9 1 (0.19%) CISSP
9 1 (0.19%) GIAC
9 1 (0.19%) ISEB
9 1 (0.19%) MBA
9 1 (0.19%) MCSE
Quality Assurance & Compliance
1 27 (5.26%) QA
2 18 (3.51%) Data Quality
3 2 (0.39%) IFRS
4 1 (0.19%) IFRS 9
4 1 (0.19%) PMO
System Software
1 61 (11.89%) Docker
2 13 (2.53%) HDFS
3 6 (1.17%) Apache Flume
3 6 (1.17%) Apache ZooKeeper
4 4 (0.78%) KVM
4 4 (0.78%) LXC
5 3 (0.58%) Active Directory
6 1 (0.19%) Cronacle
6 1 (0.19%) etcd
6 1 (0.19%) Varnish
6 1 (0.19%) Virtual Machines
Systems Management
1 44 (8.58%) Kubernetes
2 13 (2.53%) Ansible
3 6 (1.17%) Opscode Chef
4 5 (0.97%) Puppet
5 4 (0.78%) Prometheus
5 4 (0.78%) Single Sign-On
6 3 (0.58%) Consul
6 3 (0.58%) CSIRT
6 3 (0.58%) Grafana
6 3 (0.58%) Hadoop YARN
6 3 (0.58%) Kibana
6 3 (0.58%) logstash
6 3 (0.58%) Oozie
7 2 (0.39%) Apache Brooklyn
7 2 (0.39%) Docker Swarm
7 2 (0.39%) Marathon
7 2 (0.39%) Mesos
8 1 (0.19%) RSA Archer
8 1 (0.19%) RSA Security Analytics
8 1 (0.19%) Terraform
Vendors
1 40 (7.80%) Google
2 38 (7.41%) Oracle
3 32 (6.24%) Microsoft
4 23 (4.48%) Tableau
5 20 (3.90%) SAP
6 15 (2.92%) Twitter
7 8 (1.56%) Atlassian
8 7 (1.36%) Sybase
9 6 (1.17%) Cypress Semiconductor
9 6 (1.17%) Hortonworks
9 6 (1.17%) Perfecto Mobile
9 6 (1.17%) Salesforce.com
10 5 (0.97%) Alteryx
10 5 (0.97%) Infragistics
10 5 (0.97%) RapidMiner
10 5 (0.97%) Red Hat
11 4 (0.78%) Citrix
11 4 (0.78%) Cloudera
11 4 (0.78%) F5
11 4 (0.78%) LabWare