Period
to 25 April 2019

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 25 April 2019 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
25 Apr 2019
Same period 2018 Same period 2017
Rank 223 272 291
Rank change year-on-year +49 +19 +15
Contract jobs citing Data Structures 511 435 325
As % of all contract IT jobs advertised in London 1.22% 0.94% 0.82%
As % of the Miscellaneous category 3.28% 2.55% 2.25%
Number of daily rates quoted 361 298 230
London median daily rate £560 £550 £500
Median daily rate % change year-on-year +1.82% +10.00% -4.76%
10th Percentile £400 £397 £325
90th Percentile £725 £675 £675
England median daily rate £525 £500 £459
% change year-on-year +5.00% +8.99% -3.42%
Number of hourly rates quoted 0 6 3
London median hourly rate - £41.00 £32.50
Median hourly rate % change year-on-year - +26.15% -25.29%
England median hourly rate £45.00 £67.50 £32.50
% change year-on-year -33.33% +107.69% -7.14%

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 15,582 17,067 14,417
As % of all contract IT jobs advertised in London 37.17% 37.06% 36.26%
Number of daily rates quoted 11,046 12,256 10,132
London median daily rate £525 £500 £485
Median daily rate % change year-on-year +5.00% +3.09% +3.74%
10th Percentile £325 £313 £306
90th Percentile £700 £700 £675
England median daily rate £475 £470 £450
% change year-on-year +1.06% +4.44% +5.88%
Number of hourly rates quoted 251 292 234
London median hourly rate £25.30 £22.73 £24.41
Median hourly rate % change year-on-year +11.31% -6.90% +14.23%
10th Percentile £13.25 £13.00 £12.75
90th Percentile £52.50 £50.00 £51.25
England median hourly rate £21.50 £21.60 £20.50
% change year-on-year -0.46% +5.37% -2.38%

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 25 April 2019.

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 25 April 2019. 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 +28 135 £568 +13.50% 19
West London +25 19 £450 -16.28% 3
South London +15 11 £538 +2.38% 3
East London -16 10 £700 +21.74% 2
Data Structures
England

For the 6 months to 25 April 2019, 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.

1 221 (43.25%) Agile Software Development
2 219 (42.86%) Algorithms
3 188 (36.79%) Java
4 182 (35.62%) Finance
5 172 (33.66%) SQL
6 145 (28.38%) Python
7 136 (26.61%) OO
8 114 (22.31%) JavaScript
9 110 (21.53%) Computer Science
10 105 (20.55%) Amazon AWS
11 104 (20.35%) Data Modelling
12 100 (19.57%) REST
13 92 (18.00%) Linux
14 89 (17.42%) TDD
15 87 (17.03%) Problem-Solving
16 78 (15.26%) Git (software)
17 76 (14.87%) Analytical Skills
18 74 (14.48%) Analytics
18 74 (14.48%) Multithreading
18 74 (14.48%) HTML
19 73 (14.29%) Migration
19 73 (14.29%) Kafka
20 72 (14.09%) Oracle
20 72 (14.09%) NoSQL
21 71 (13.89%) Spring
21 71 (13.89%) Microservices
21 71 (13.89%) Relational Database
22 67 (13.11%) SQL Server
22 67 (13.11%) ETL
22 67 (13.11%) Degree

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 39 (7.63%) Apache Spark
2 34 (6.65%) Apache
3 19 (3.72%) IPython
4 13 (2.54%) Confluence
5 7 (1.37%) WebLogic
6 6 (1.17%) SAS
7 4 (0.78%) CMS
7 4 (0.78%) IBM HTTP Server
7 4 (0.78%) OpenStack
8 3 (0.59%) Apache Pig
8 3 (0.59%) Jupyter
8 3 (0.59%) Magnolia
8 3 (0.59%) WebSphere
9 2 (0.39%) Apache Airflow
9 2 (0.39%) Cloud Foundry
9 2 (0.39%) Elasticsearch
9 2 (0.39%) Luigi
9 2 (0.39%) nginx
9 2 (0.39%) Oracle SOA Suite
9 2 (0.39%) Tomcat
Applications
1 25 (4.89%) Microsoft Excel
2 7 (1.37%) Spreadsheet
3 6 (1.17%) MS Visio
4 5 (0.98%) Microsoft Office
5 2 (0.39%) Microsoft PowerPoint
6 1 (0.20%) Chatbot
Business Applications
1 8 (1.57%) Oracle Financials
1 8 (1.57%) SAP S/4HANA
2 4 (0.78%) SAP BPC
3 2 (0.39%) SAP FI
3 2 (0.39%) SAP Retail
3 2 (0.39%) Teamcenter
4 1 (0.20%) Dynamics CRM
4 1 (0.20%) Markit EDM
4 1 (0.20%) Raiser's Edge
4 1 (0.20%) SAP ERP
4 1 (0.20%) SAP EWM
4 1 (0.20%) SAP Oil and Gas
4 1 (0.20%) SAP WM
Cloud Services
1 105 (20.55%) Amazon AWS
2 57 (11.15%) Microsoft Azure
3 35 (6.85%) Google Cloud Platform
4 34 (6.65%) Amazon S3
5 20 (3.91%) Amazon EC2
6 17 (3.33%) Amazon SQS
6 17 (3.33%) AWS CloudFormation
6 17 (3.33%) GitHub
7 16 (3.13%) Amazon CloudWatch
7 16 (3.13%) Amazon Glacier
7 16 (3.13%) AWS CloudTrail
7 16 (3.13%) Virtual Private Cloud
8 15 (2.94%) Heroku
9 10 (1.96%) SaaS
10 9 (1.76%) PaaS
11 5 (0.98%) Amazon EMR
11 5 (0.98%) Cloud Computing
12 3 (0.59%) Amazon Kinesis
12 3 (0.59%) Azure Data Factory
12 3 (0.59%) Dynamics 365
Communications & Networking
1 10 (1.96%) HTTP
2 1 (0.20%) BIG-IP
2 1 (0.20%) Firewall
2 1 (0.20%) FTP
2 1 (0.20%) HTTPS
2 1 (0.20%) Internet
2 1 (0.20%) Intranet
2 1 (0.20%) NetScaler
2 1 (0.20%) RFID
2 1 (0.20%) TCP/IP
Database & Business Intelligence
1 72 (14.09%) NoSQL
2 71 (13.89%) Relational Database
3 67 (13.11%) SQL Server
4 62 (12.13%) Big Data
5 39 (7.63%) Data Warehouse
6 32 (6.26%) MySQL
7 31 (6.07%) MongoDB
8 29 (5.68%) Apache Cassandra
9 26 (5.09%) Amazon RDS
10 24 (4.70%) Hadoop
11 23 (4.50%) Power BI
12 18 (3.52%) PostgreSQL
13 14 (2.74%) Data Lake
14 13 (2.54%) Apache Hive
15 12 (2.35%) Redis
15 12 (2.35%) SQL Server Analysis Services
15 12 (2.35%) SQL Server Integration Services
16 11 (2.15%) SQL Server 2012
17 10 (1.96%) Microsoft Analysis Services
17 10 (1.96%) MS Access
Development Applications
1 78 (15.26%) Git (software)
2 51 (9.98%) Jenkins
3 31 (6.07%) JUnit
4 20 (3.91%) Maven
5 19 (3.72%) JIRA
6 14 (2.74%) webpack
7 13 (2.54%) PostCSS
8 11 (2.15%) Subversion
9 9 (1.76%) Mockito
10 7 (1.37%) Cucumber
10 7 (1.37%) ERwin
11 5 (0.98%) Bitbucket
11 5 (0.98%) Gerrit
11 5 (0.98%) Selenium
11 5 (0.98%) TeamCity
11 5 (0.98%) Visual Studio
12 4 (0.78%) SQL Server Management Studio (SSMS)
12 4 (0.78%) TestNG
13 3 (0.59%) Team Foundation Server
14 2 (0.39%) WebDriver
General
1 182 (35.62%) Finance
2 57 (11.15%) Banking
3 37 (7.24%) Front Office
4 19 (3.72%) Investment Banking
5 16 (3.13%) Marketing
6 14 (2.74%) Retail
7 13 (2.54%) Financial Institution
8 8 (1.57%) Telecoms
9 6 (1.17%) Games
10 5 (0.98%) Legal
10 5 (0.98%) Manufacturing
11 4 (0.78%) Pharmaceutical
12 3 (0.59%) Back Office
12 3 (0.59%) Electronics
13 1 (0.20%) Danish Language
13 1 (0.20%) Law
13 1 (0.20%) Publishing
13 1 (0.20%) Spanish Language
Job Titles
1 322 (63.01%) Developer
2 124 (24.27%) Java Developer
3 48 (9.39%) Python Developer
4 47 (9.20%) Analyst
5 42 (8.22%) Senior Developer
6 35 (6.85%) Architect
7 24 (4.70%) SQL Developer
8 23 (4.50%) Data Architect
8 23 (4.50%) Data Engineer
8 23 (4.50%) Quantitative Developer
8 23 (4.50%) React Developer
9 22 (4.31%) C# Developer
9 22 (4.31%) Hybris Developer
10 21 (4.11%) Front Office Developer
10 21 (4.11%) Software Developer
11 19 (3.72%) Senior Java Developer
12 18 (3.52%) .NET Developer
12 18 (3.52%) Data Analyst
12 18 (3.52%) Scala Developer
13 14 (2.74%) E-Commerce Developer
Libraries, Frameworks & Software Standards
1 100 (19.57%) REST
2 74 (14.48%) HTML
3 73 (14.29%) Kafka
4 71 (13.89%) Spring
5 60 (11.74%) CSS
6 53 (10.37%) JSON
6 53 (10.37%) SOAP
7 52 (10.18%) React
7 52 (10.18%) Web Services
8 45 (8.81%) Node.js
9 44 (8.61%) RESTful
10 42 (8.22%) HTML5
10 42 (8.22%) Middleware
11 35 (6.85%) .NET
11 35 (6.85%) AngularJS
12 33 (6.46%) XML
13 31 (6.07%) RabbitMQ
14 29 (5.68%) NumPy
15 28 (5.48%) Pandas
16 26 (5.09%) Spring Boot
Miscellaneous
1 219 (42.86%) Algorithms
2 76 (14.87%) Analytical Skills
3 39 (7.63%) Hedge funds
4 32 (6.26%) User Experience
5 28 (5.48%) Fintech
6 24 (4.70%) Client/Server
7 23 (4.50%) Fixed Income
8 22 (4.31%) Greenfield Project
9 16 (3.13%) Equities
10 14 (2.74%) Foreign Exchange (FX)
10 14 (2.74%) Management Information System
11 13 (2.54%) Self-Motivation
12 11 (2.15%) Public Cloud
13 10 (1.96%) Derivative
14 8 (1.57%) Analytical Mindset
15 7 (1.37%) Mobile App
16 6 (1.17%) Credit Risk
16 6 (1.17%) Interest Rate Derivative
16 6 (1.17%) Linux Command Line
16 6 (1.17%) Virtual Team
Operating Systems
1 92 (18.00%) Linux
2 23 (4.50%) Windows
3 22 (4.31%) Unix
4 7 (1.37%) Android
5 4 (0.78%) Apple iOS
6 1 (0.20%) Red Hat Enterprise Linux
6 1 (0.20%) Windows Server
Processes & Methodologies
1 221 (43.25%) Agile Software Development
2 136 (26.61%) OO
3 110 (21.53%) Computer Science
4 104 (20.35%) Data Modelling
5 89 (17.42%) TDD
6 87 (17.03%) Problem-Solving
7 74 (14.48%) Analytics
7 74 (14.48%) Multithreading
8 73 (14.29%) Migration
9 71 (13.89%) Microservices
10 67 (13.11%) ETL
11 65 (12.72%) Continuous Integration
12 64 (12.52%) OOD
13 60 (11.74%) Test Automation
14 58 (11.35%) Software Engineering
15 48 (9.39%) Open Source
16 47 (9.20%) DevOps
17 45 (8.81%) Data Analysis
18 43 (8.41%) Data Migration
18 43 (8.41%) Unit Testing
Programming Languages
1 188 (36.79%) Java
2 172 (33.66%) SQL
3 145 (28.38%) Python
4 114 (22.31%) JavaScript
5 60 (11.74%) Scala
6 56 (10.96%) Java 8
7 49 (9.59%) C#
8 48 (9.39%) C++
9 35 (6.85%) Bash Shell
10 34 (6.65%) ES6
10 34 (6.65%) TypeScript
11 19 (3.72%) Cython
12 18 (3.52%) Clojure
13 17 (3.33%) Groovy
14 16 (3.13%) T-SQL
15 15 (2.94%) Go
16 14 (2.74%) R
17 9 (1.76%) PHP
18 8 (1.57%) Perl
19 7 (1.37%) PL/SQL
Qualifications
1 67 (13.11%) Degree
2 38 (7.44%) Security Cleared
3 34 (6.65%) SC Cleared
4 21 (4.11%) Computer Science Degree
5 11 (2.15%) CTC Cleared
6 10 (1.96%) ACCA
7 6 (1.17%) Master's Degree
7 6 (1.17%) PhD
8 3 (0.59%) DV Cleared
9 2 (0.39%) MBA
9 2 (0.39%) MCSA
9 2 (0.39%) Microsoft Certification
9 2 (0.39%) Numerate Degree
10 1 (0.20%) BPSS Clearance
10 1 (0.20%) DBS Check
Quality Assurance & Compliance
1 60 (11.74%) QA
2 36 (7.05%) Data Quality
3 4 (0.78%) SEPA
4 2 (0.39%) GDPR
4 2 (0.39%) IFRS
4 2 (0.39%) MiFID
5 1 (0.20%) IFRS 9
5 1 (0.20%) PCI DSS
System Software
1 58 (11.35%) Docker
2 8 (1.57%) HDFS
3 6 (1.17%) Apache ZooKeeper
4 2 (0.39%) Apache Flume
4 2 (0.39%) etcd
4 2 (0.39%) Firmware
5 1 (0.20%) KVM
5 1 (0.20%) LXC
5 1 (0.20%) Virtual Machines
Systems Management
1 56 (10.96%) Kubernetes
2 27 (5.28%) Ansible
3 4 (0.78%) Control-M
3 4 (0.78%) Hadoop YARN
3 4 (0.78%) Kibana
4 3 (0.59%) Opscode Chef
4 3 (0.59%) Puppet
5 2 (0.39%) Consul
5 2 (0.39%) Terraform
6 1 (0.20%) Single Sign-On
Vendors
1 72 (14.09%) Oracle
2 32 (6.26%) Microsoft
3 22 (4.31%) hybris
4 19 (3.72%) Google
5 17 (3.33%) SAP
6 12 (2.35%) Twitter
7 11 (2.15%) Atlassian
8 10 (1.96%) Salesforce.com
8 10 (1.96%) Sybase
9 8 (1.57%) Xerox
10 7 (1.37%) MuleSoft
11 6 (1.17%) Informatica
12 5 (0.98%) Tableau
13 4 (0.78%) BMC
13 4 (0.78%) Cadence
13 4 (0.78%) Hortonworks
13 4 (0.78%) IBM
13 4 (0.78%) LabWare
13 4 (0.78%) OutSystems
13 4 (0.78%) Rackspace