Period
to 29 November 2020

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 29 November 2020 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
29 Nov 2020
Same period 2019 Same period 2018
Rank 218 256 257
Rank change year-on-year +38 +1 -24
Contract jobs citing Data Structures 165 343 489
As % of all contract jobs advertised in London 1.04% 0.98% 1.05%
As % of the Miscellaneous category 2.69% 2.94% 2.94%
Number of daily rates quoted 119 233 342
Median daily rate £550 £550 £550
10th Percentile £398 £350 £409
90th Percentile £753 £725 £750
England median daily rate £532 £525 £500
% change year-on-year +1.29% +5.00% +5.26%
Number of hourly rates quoted 3 0 6
Median hourly rate £35.00 - £37.09
England median hourly rate £35.00 £41.25 £39.50
% change year-on-year -15.15% +4.43% +12.86%

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 6,137 11,664 16,612
As % of all contract IT jobs advertised in London 38.67% 33.40% 35.82%
Number of daily rates quoted 4,144 8,084 11,842
Median daily rate £525 £523 £525
Median daily rate % change year-on-year +0.48% -0.48% +5.00%
10th Percentile £313 £300 £313
90th Percentile £750 £700 £700
England median daily rate £475 £475 £475
Number of hourly rates quoted 108 168 276
Median hourly rate £35.00 £23.25 £22.74
Median hourly rate % change year-on-year +50.54% +2.27% +3.31%
10th Percentile £16.74 £12.44 £13.00
90th Percentile £49.24 £52.50 £53.75
Median hourly rate £35.00 £22.75 £20.00
% change year-on-year +53.85% +13.75% -

Data Structures
Job Vacancy Trend in London

Job postings citing Data Structures as a proportion of all IT jobs advertised in London.

Job vacancy trend for Data Structures in London

Data Structures
Contractor Daily Rate Trend in London

3-month moving average daily rate quoted in jobs citing Data Structures in London.

Daily rate trend for Data Structures in London

Data Structures
Daily Rate Histogram in London

Daily rate distribution for jobs citing Data Structures in London over the 6 months to 29 November 2020.

Daily rate histogram for Data Structures in London

Data Structures
Contractor Hourly Rate Trend in London

3-month moving average hourly rates quoted in jobs citing Data Structures in London.

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 29 November 2020. 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 +38 18 £500 -9.09% 73
West London +40 16 £600 +17.07% 11
Data Structures
England

For the 6 months to 29 November 2020, 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 75 (45.45%) Agile Software Development
2 59 (35.76%) Java
3 53 (32.12%) SQL
4 50 (30.30%) Analytics
5 49 (29.70%) Python
5 49 (29.70%) Finance
6 43 (26.06%) Algorithms
7 38 (23.03%) Analytical Skills
8 36 (21.82%) Computer Science
9 35 (21.21%) Data Modelling
9 35 (21.21%) Azure
10 34 (20.61%) Problem-Solving
11 33 (20.00%) Business Intelligence
12 31 (18.79%) JavaScript
12 31 (18.79%) Banking
12 31 (18.79%) SDLC
13 28 (16.97%) Data Warehouse
14 27 (16.36%) Scrum
14 27 (16.36%) DevOps
15 26 (15.76%) Machine Learning
15 26 (15.76%) Microsoft
15 26 (15.76%) Multithreading
16 25 (15.15%) React
16 25 (15.15%) Data Science
17 24 (14.55%) Jenkins
17 24 (14.55%) Git (software)
18 23 (13.94%) Test Automation
19 22 (13.33%) Software Engineering
20 21 (12.73%) Investment Banking
20 21 (12.73%) NoSQL

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 13 (7.88%) Apache Spark
2 9 (5.45%) WebLogic
2 9 (5.45%) WebSphere
3 8 (4.85%) SharePoint
4 6 (3.64%) CMS
4 6 (3.64%) SAS
5 5 (3.03%) Apache Airflow
6 4 (2.42%) Confluence
7 2 (1.21%) Apache
8 1 (0.61%) Apache Pig
8 1 (0.61%) Elasticsearch
8 1 (0.61%) IBM Domino
8 1 (0.61%) Luigi
8 1 (0.61%) Oracle SOA Suite
Applications
1 6 (3.64%) Microsoft Excel
1 6 (3.64%) Microsoft Office
2 1 (0.61%) Microsoft PowerPoint
2 1 (0.61%) MS Visio
2 1 (0.61%) SPSS
Business Applications
1 2 (1.21%) Advent Geneva
2 1 (0.61%) Dynamics CRM
2 1 (0.61%) Oracle EBS
2 1 (0.61%) Salesforce.com CRM
2 1 (0.61%) SAP HCM
2 1 (0.61%) SAP S/4HANA
Cloud Services
1 35 (21.21%) Azure
2 20 (12.12%) Power Platform
3 19 (11.52%) AWS
4 15 (9.09%) Cloud Computing
5 12 (7.27%) Dynamics 365
6 9 (5.45%) Serverless
7 8 (4.85%) GitHub
8 6 (3.64%) GCP
9 4 (2.42%) Azure Data Factory
9 4 (2.42%) Google Play
9 4 (2.42%) PaaS
10 3 (1.82%) Amazon S3
10 3 (1.82%) AWS CloudFormation
10 3 (1.82%) AWS CodePipeline
10 3 (1.82%) Office 365
11 2 (1.21%) Amazon Kinesis
11 2 (1.21%) AWS Lambda
11 2 (1.21%) Azure Machine Learning
11 2 (1.21%) SaaS
11 2 (1.21%) Slack
Communications & Networking
1 11 (6.67%) HTTP
2 2 (1.21%) Internet
2 2 (1.21%) WebEx
3 1 (0.61%) Firewall
3 1 (0.61%) TCP/IP
Database & Business Intelligence
1 28 (16.97%) Data Warehouse
2 21 (12.73%) NoSQL
3 20 (12.12%) Big Data
3 20 (12.12%) Power BI
4 17 (10.30%) Relational Database
5 13 (7.88%) Tableau
6 12 (7.27%) SQL Server
7 11 (6.67%) Oracle Database
8 10 (6.06%) Data Lake
8 10 (6.06%) PostgreSQL
9 9 (5.45%) Oracle Database 11g
9 9 (5.45%) Oracle Database 12c
10 8 (4.85%) Hadoop
10 8 (4.85%) RDBMS
10 8 (4.85%) SQL Server Integration Services
11 7 (4.24%) Apache Cassandra
11 7 (4.24%) Redis
12 6 (3.64%) Spotfire
13 4 (2.42%) Data Mining
13 4 (2.42%) MySQL
Development Applications
1 24 (14.55%) Git (software)
1 24 (14.55%) Jenkins
2 13 (7.88%) Maven
3 12 (7.27%) Ant
3 12 (7.27%) Gradle
4 10 (6.06%) JMeter
4 10 (6.06%) JUnit
5 9 (5.45%) Mockito
6 6 (3.64%) git-flow
6 6 (3.64%) JIRA
7 3 (1.82%) Android Studio
7 3 (1.82%) Grunt
7 3 (1.82%) gulp
7 3 (1.82%) Selenium
7 3 (1.82%) webpack
8 2 (1.21%) CircleCI
8 2 (1.21%) Cucumber
8 2 (1.21%) NUnit
8 2 (1.21%) Visual Studio
9 1 (0.61%) Toad
General
1 49 (29.70%) Finance
2 31 (18.79%) Banking
3 21 (12.73%) Investment Banking
4 15 (9.09%) Front Office
5 13 (7.88%) Retail
6 7 (4.24%) Pharmaceutical
7 6 (3.64%) Marketing
8 4 (2.42%) Manufacturing
9 3 (1.82%) Financial Institution
9 3 (1.82%) Publishing
9 3 (1.82%) Retail Banking
10 2 (1.21%) Games
10 2 (1.21%) Public Sector
11 1 (0.61%) Legal
11 1 (0.61%) Local Government
11 1 (0.61%) Prime Brokerage
11 1 (0.61%) Telecoms
Job Titles
1 69 (41.82%) Developer
2 25 (15.15%) Java Developer
3 14 (8.48%) Analyst
4 12 (7.27%) Data Engineer
5 11 (6.67%) Consultant
6 10 (6.06%) Architect
7 9 (5.45%) Data Architect
8 8 (4.85%) Oracle Developer
8 8 (4.85%) Senior Developer
9 7 (4.24%) Business Analyst
9 7 (4.24%) Data Consultant
9 7 (4.24%) Data Modeller
9 7 (4.24%) Front End Developer (Client-Side Developer)
10 6 (3.64%) Azure Engineer
10 6 (3.64%) Data Migration Consultant
10 6 (3.64%) Data Programmer
10 6 (3.64%) Investment Banking Java Developer
10 6 (3.64%) Programmer
10 6 (3.64%) Python Developer
10 6 (3.64%) Senior Programmer
Libraries, Frameworks & Software Standards
1 25 (15.15%) React
2 19 (11.52%) Web Services
3 18 (10.91%) RESTful
3 18 (10.91%) Spring
4 17 (10.30%) AngularJS
5 16 (9.70%) HTML
5 16 (9.70%) Kafka
6 15 (9.09%) JSON
7 14 (8.48%) CSS
8 13 (7.88%) REST
9 12 (7.27%) SOAP
10 11 (6.67%) Redux
10 11 (6.67%) XML
11 10 (6.06%) J2EE
12 9 (5.45%) .NET
12 9 (5.45%) FIX Protocol
12 9 (5.45%) HTML5
12 9 (5.45%) RxJava
13 7 (4.24%) Node.js
14 6 (3.64%) Shiny
Miscellaneous
1 43 (26.06%) Algorithms
2 38 (23.03%) Analytical Skills
3 20 (12.12%) User Experience
4 15 (9.09%) Enterprise Software
5 11 (6.67%) Foreign Exchange (FX)
6 10 (6.06%) Mobile App
7 9 (5.45%) Credit Risk
7 9 (5.45%) Mobile Payment
8 6 (3.64%) Management Information System
9 5 (3.03%) Contract for Difference
9 5 (3.03%) Spread Betting
9 5 (3.03%) Virtual Team
10 4 (2.42%) Greenfield Project
11 3 (1.82%) Market Risk
11 3 (1.82%) Media Streaming
11 3 (1.82%) Mobile Banking
12 2 (1.21%) Blog
12 2 (1.21%) Derivative
12 2 (1.21%) FMCG
12 2 (1.21%) Life Science
Operating Systems
1 20 (12.12%) Linux
2 3 (1.82%) Android
2 3 (1.82%) Unix
3 2 (1.21%) Apple iOS
3 2 (1.21%) Windows
Processes & Methodologies
1 75 (45.45%) Agile Software Development
2 50 (30.30%) Analytics
3 36 (21.82%) Computer Science
4 35 (21.21%) Data Modelling
5 34 (20.61%) Problem-Solving
6 33 (20.00%) Business Intelligence
7 31 (18.79%) SDLC
8 27 (16.36%) DevOps
8 27 (16.36%) Scrum
9 26 (15.76%) Machine Learning
9 26 (15.76%) Multithreading
10 25 (15.15%) Data Science
11 23 (13.94%) Test Automation
12 22 (13.33%) Software Engineering
13 20 (12.12%) Continuous Integration
13 20 (12.12%) OO
13 20 (12.12%) Risk Management
14 18 (10.91%) Migration
14 18 (10.91%) Performance Tuning
15 17 (10.30%) Visualisation
Programming Languages
1 59 (35.76%) Java
2 53 (32.12%) SQL
3 49 (29.70%) Python
4 31 (18.79%) JavaScript
5 14 (8.48%) Scala
6 13 (7.88%) Kotlin
7 12 (7.27%) R
8 10 (6.06%) TypeScript
9 8 (4.85%) C#
10 7 (4.24%) C++
11 6 (3.64%) Java 8
12 4 (2.42%) ES6
12 4 (2.42%) T-SQL
13 3 (1.82%) Apple Swift
13 3 (1.82%) Bash Shell
13 3 (1.82%) Objective-C
14 2 (1.21%) Go
14 2 (1.21%) Groovy
14 2 (1.21%) PL/SQL
14 2 (1.21%) PowerShell
Qualifications
1 19 (11.52%) Degree
2 14 (8.48%) Computer Science Degree
3 9 (5.45%) PhD
4 5 (3.03%) Security Cleared
5 3 (1.82%) SC Cleared
6 2 (1.21%) DV Cleared
6 2 (1.21%) Master's Degree
6 2 (1.21%) Numerate Degree
Quality Assurance & Compliance
1 12 (7.27%) QA
2 9 (5.45%) Data Quality
3 1 (0.61%) Cyber Essentials
3 1 (0.61%) Cyber Essentials PLUS
3 1 (0.61%) IFRS
3 1 (0.61%) IFRS 9
3 1 (0.61%) ISO 9001
3 1 (0.61%) ISO/IEC 27001
3 1 (0.61%) NCSC
3 1 (0.61%) Sarbanes-Oxley
System Software
1 12 (7.27%) Docker
2 2 (1.21%) Apache ZooKeeper
2 2 (1.21%) etcd
2 2 (1.21%) Varnish
3 1 (0.61%) HDFS
Systems Management
1 17 (10.30%) Kubernetes
2 9 (5.45%) Terraform
3 4 (2.42%) Ansible
4 3 (1.82%) Opscode Chef
4 3 (1.82%) Puppet
5 2 (1.21%) Consul
6 1 (0.61%) Hadoop YARN
6 1 (0.61%) Istio
6 1 (0.61%) Rundeck
6 1 (0.61%) Single Sign-On
Vendors
1 26 (15.76%) Microsoft
2 18 (10.91%) Oracle
3 11 (6.67%) Google
4 7 (4.24%) Databricks
5 4 (2.42%) Apple
5 4 (2.42%) Informatica
5 4 (2.42%) Splunk
6 3 (1.82%) SAP
7 2 (1.21%) Advent
7 2 (1.21%) Alteryx
7 2 (1.21%) Blue Prism
7 2 (1.21%) IBM
7 2 (1.21%) Talend
8 1 (0.61%) Atlassian
8 1 (0.61%) Dynatrace
8 1 (0.61%) hybris
8 1 (0.61%) Infor
8 1 (0.61%) Pega
8 1 (0.61%) Rackspace
8 1 (0.61%) Xerox