Period
to 18 September 2020

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in Central London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 18 September 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
London > Central London
6 months to
18 Sep 2020
Same period 2019 Same period 2018
Rank 110 185 173
Rank change year-on-year +75 -12 -10
Contract jobs citing Data Structures 17 77 122
As % of all contract jobs advertised in Central London 0.83% 0.96% 1.34%
As % of the Miscellaneous category 2.34% 2.99% 3.44%
Number of daily rates quoted 11 66 76
Median daily rate £545 £550 £500
Median daily rate % change year-on-year -0.91% +10.00% -6.10%
10th Percentile £425 £372 £416
90th Percentile £775 £694 £650
London median daily rate £600 £550 £540
% change year-on-year +9.09% +1.85% +4.60%
Number of hourly rates quoted 0 1 3
Median hourly rate - £12.50 £37.09
Median hourly rate % change year-on-year - -66.30% -
London median hourly rate - £47.50 £37.09
% change year-on-year - +28.07% -

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 Central London with a requirement for generic IT skills.

All Generic IT Skills
Central London
Contract vacancies with a requirement for generic IT skills 728 2,573 3,551
As % of all contract IT jobs advertised in Central London 35.70% 32.04% 38.89%
Number of daily rates quoted 458 1,944 2,682
Median daily rate £516 £525 £516
Median daily rate % change year-on-year -1.67% +1.74% -1.71%
10th Percentile £306 £313 £313
90th Percentile £696 £688 £713
London median daily rate £525 £525 £515
% change year-on-year - +1.94% +3.00%
Number of hourly rates quoted 30 43 61
Median hourly rate £35.75 £20.50 £19.25
Median hourly rate % change year-on-year +74.39% +6.49% +1.32%
10th Percentile £16.80 £11.25 £13.31
90th Percentile £48.63 £50.83 £37.09
Median hourly rate £35.00 £23.50 £23.50
% change year-on-year +48.94% - +6.82%

Data Structures
Job Vacancy Trend in Central London

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

Job vacancy trend for Data Structures in Central London

Data Structures
Contractor Daily Rate Trend in Central London

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

Daily rate trend for Data Structures in Central London

Data Structures
Daily Rate Histogram in Central London

Daily rate distribution for jobs citing Data Structures in Central London over the 6 months to 18 September 2020.

Daily rate histogram for Data Structures in Central London

Data Structures
Contractor Hourly Rate Trend in Central London

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

Hourly rate trend for Data Structures in Central London

Data Structures
Contract Job Locations in Central 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 Central London region over the 6 months to 18 September 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
City of London +72 15 £551 -4.17% 44
Data Structures
London

For the 6 months to 18 September 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 Central London region with a requirement for Data Structures.

1 10 (58.82%) Java
2 8 (47.06%) QA
3 7 (41.18%) Agile Software Development
3 7 (41.18%) SQL
4 6 (35.29%) Banking
4 6 (35.29%) Multithreading
4 6 (35.29%) AWS
4 6 (35.29%) Relational Database
4 6 (35.29%) Algorithms
4 6 (35.29%) Multithreaded Programming
5 5 (29.41%) Problem-Solving
5 5 (29.41%) Enterprise Software
5 5 (29.41%) Analytics
5 5 (29.41%) Unit Testing
5 5 (29.41%) HTML
5 5 (29.41%) Oracle
5 5 (29.41%) OOD
5 5 (29.41%) OO
5 5 (29.41%) Python
6 4 (23.53%) Swing
6 4 (23.53%) Business Intelligence
6 4 (23.53%) RDBMS
6 4 (23.53%) SQL Server
6 4 (23.53%) Ant
6 4 (23.53%) Linux
6 4 (23.53%) Data Analysis
6 4 (23.53%) Software Engineering
6 4 (23.53%) Finance
6 4 (23.53%) HTML5
6 4 (23.53%) Electronic Trading

Data Structures
Co-occurring IT Skills in Central 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 1 (5.88%) NetWeaver
1 1 (5.88%) Oracle SOA Suite
Business Applications
1 1 (5.88%) SAP BPC
Cloud Services
1 6 (35.29%) AWS
2 4 (23.53%) Azure
3 3 (17.65%) Dynamics 365
3 3 (17.65%) Power Platform
4 2 (11.76%) GCP
5 1 (5.88%) AWS CloudFormation
5 1 (5.88%) Cloud Computing
5 1 (5.88%) Heroku
5 1 (5.88%) Serverless
Communications & Networking
1 1 (5.88%) WebEx
Database & Business Intelligence
1 6 (35.29%) Relational Database
2 4 (23.53%) RDBMS
2 4 (23.53%) SQL Server
3 3 (17.65%) NoSQL
3 3 (17.65%) PostgreSQL
3 3 (17.65%) Power BI
4 2 (11.76%) Data Lake
4 2 (11.76%) Data Warehouse
4 2 (11.76%) Semantic Layer
5 1 (5.88%) Apache Cassandra
5 1 (5.88%) BusinessObjects
5 1 (5.88%) Redis
5 1 (5.88%) SAP BW
Development Applications
1 4 (23.53%) Ant
2 2 (11.76%) Git (software)
2 2 (11.76%) Selenium
3 1 (5.88%) Appium
3 1 (5.88%) Cucumber
3 1 (5.88%) Hudson
3 1 (5.88%) Jenkins
3 1 (5.88%) JIRA
3 1 (5.88%) JMeter
3 1 (5.88%) JUnit
3 1 (5.88%) LoadRunner
3 1 (5.88%) Maven
3 1 (5.88%) TestNG
3 1 (5.88%) WebDriver
3 1 (5.88%) webpack
General
1 6 (35.29%) Banking
2 4 (23.53%) Finance
3 2 (11.76%) Front Office
4 1 (5.88%) Law
Job Titles
1 10 (58.82%) Developer
2 8 (47.06%) Java Developer
3 2 (11.76%) Data Engineer
3 2 (11.76%) Python Developer
4 1 (5.88%) Algorithmic Trading Developer
4 1 (5.88%) AWS Developer
4 1 (5.88%) Chief Technology Officer
4 1 (5.88%) Consultant
4 1 (5.88%) Data Integration Engineer
4 1 (5.88%) Data Modeller
4 1 (5.88%) Full Stack Developer
4 1 (5.88%) Integration Engineer
4 1 (5.88%) Java Developer - Algorithmic Trading
4 1 (5.88%) Low Latency Java Developer
4 1 (5.88%) SAP BPC Consultant
4 1 (5.88%) SAP Consultant
4 1 (5.88%) Senior Data Warehouse Specialist
Libraries, Frameworks & Software Standards
1 5 (29.41%) HTML
2 4 (23.53%) HTML5
2 4 (23.53%) Swing
3 2 (11.76%) CSS
3 2 (11.76%) FIX Protocol
3 2 (11.76%) Kafka
3 2 (11.76%) REST
3 2 (11.76%) Spring
4 1 (5.88%) AngularJS
4 1 (5.88%) Celery
4 1 (5.88%) Flask
4 1 (5.88%) Hibernate
4 1 (5.88%) Natural Language Processing
4 1 (5.88%) Node.js
4 1 (5.88%) NumPy
4 1 (5.88%) Pandas
4 1 (5.88%) SOAP
4 1 (5.88%) Web Services
4 1 (5.88%) WebSockets
4 1 (5.88%) ZeroMQ
Miscellaneous
1 6 (35.29%) Algorithms
2 5 (29.41%) Enterprise Software
3 4 (23.53%) Analytical Skills
3 4 (23.53%) Fixed Income
4 2 (11.76%) Foreign Exchange (FX)
4 2 (11.76%) Management Information System
5 1 (5.88%) Blog
5 1 (5.88%) Self-Motivation
5 1 (5.88%) User Experience
Operating Systems
1 4 (23.53%) Linux
Processes & Methodologies
1 7 (41.18%) Agile Software Development
2 6 (35.29%) Multithreaded Programming
2 6 (35.29%) Multithreading
3 5 (29.41%) Analytics
3 5 (29.41%) OO
3 5 (29.41%) OOD
3 5 (29.41%) Problem-Solving
3 5 (29.41%) Unit Testing
4 4 (23.53%) Business Intelligence
4 4 (23.53%) Concurrent Programming
4 4 (23.53%) Data Analysis
4 4 (23.53%) Data Transformation
4 4 (23.53%) Electronic Trading
4 4 (23.53%) Software Engineering
5 3 (17.65%) Data Integration
6 2 (11.76%) Algorithmic Trading
6 2 (11.76%) Continuous Integration
6 2 (11.76%) Data Architecture
6 2 (11.76%) Memory Management
6 2 (11.76%) Test Automation
Programming Languages
1 10 (58.82%) Java
2 7 (41.18%) SQL
3 5 (29.41%) Python
4 3 (17.65%) JavaScript
5 2 (11.76%) Java 8
5 2 (11.76%) TypeScript
6 1 (5.88%) ABAP
6 1 (5.88%) Bash Shell
6 1 (5.88%) C++
6 1 (5.88%) ES6
6 1 (5.88%) Kotlin
6 1 (5.88%) PL/SQL
6 1 (5.88%) VBA
Qualifications
1 2 (11.76%) Degree
2 1 (5.88%) ITIL Certification
2 1 (5.88%) SAP Certification
Quality Assurance & Compliance
1 8 (47.06%) QA
2 1 (5.88%) ISO 9001
2 1 (5.88%) ISO/IEC 27001
System Software
1 3 (17.65%) Docker
Systems Management
1 4 (23.53%) Kubernetes
2 3 (17.65%) Terraform
3 1 (5.88%) Rundeck
Vendors
1 5 (29.41%) Oracle
2 3 (17.65%) Microsoft
3 2 (11.76%) SAP
4 1 (5.88%) Bloomberg
4 1 (5.88%) Infor