Period
to 6 April 2020

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 6 April 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
Central London > City of London
6 months to
6 Apr 2020
Same period 2019 Same period 2018
Rank 136 149 166
Rank change year-on-year +13 +17 +4
Contract jobs citing Data Structures 45 102 87
As % of all contract jobs advertised in the City of London 1.08% 1.49% 1.22%
As % of the Miscellaneous category 3.09% 4.02% 2.99%
Number of daily rates quoted 27 76 72
Median daily rate £500 £555 £525
Median daily rate % change year-on-year -9.91% +5.71% +16.67%
10th Percentile £350 £395 £384
90th Percentile £705 £650 £775
Central London median daily rate £508 £560 £525
% change year-on-year -9.38% +6.67% +13.51%
Number of hourly rates quoted 1 0 0
Median hourly rate £57.50 - -
Central London median hourly rate £57.50 - -

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 the City of London with a requirement for generic IT skills.

All Generic IT Skills
City of London
Contract vacancies with a requirement for generic IT skills 1,456 2,535 2,906
As % of all contract IT jobs advertised in the City of London 34.81% 37.13% 40.88%
Number of daily rates quoted 1,046 1,863 2,269
Median daily rate £525 £525 £525
10th Percentile £285 £306 £314
90th Percentile £700 £688 £725
Central London median daily rate £510 £525 £525
% change year-on-year -2.86% - +7.69%
Number of hourly rates quoted 48 43 53
Median hourly rate £25.72 £18.70 £21.50
Median hourly rate % change year-on-year +37.54% -13.02% +13.16%
10th Percentile £12.42 £13.01 £12.65
90th Percentile £52.25 £37.50 £48.45
Median hourly rate £26.72 £19.63 £21.50
% change year-on-year +36.15% -8.72% +16.22%

Data Structures
Job Vacancy Trend in the City of London

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

Job vacancy trend for Data Structures in the City of London

Data Structures
Contractor Daily Rate Trend in the City of London

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

Daily rate trend for Data Structures in the City of London

Data Structures
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing Data Structures in the City of London over the 6 months to 6 April 2020.

Daily rate histogram for Data Structures in the City of London

Data Structures
Contractor Hourly Rate Trend in the City of London

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

Hourly rate trend for Data Structures in the City of London

Data Structures
Contract Job Locations in the City of 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 City of London region over the 6 months to 6 April 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
Moorgate - 1 - -
Data Structures
Central London

For the 6 months to 6 April 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 City of London region with a requirement for Data Structures.

1 24 (53.33%) Agile Software Development
2 22 (48.89%) SQL
3 21 (46.67%) Java
4 18 (40.00%) OO
5 15 (33.33%) Degree
5 15 (33.33%) Multithreading
6 13 (28.89%) HTML5
6 13 (28.89%) Multithreaded Programming
6 13 (28.89%) JavaScript
6 13 (28.89%) HTML
7 12 (26.67%) Python
7 12 (26.67%) Computer Science
7 12 (26.67%) Finance
7 12 (26.67%) NoSQL
8 11 (24.44%) Enterprise Software
8 11 (24.44%) Oracle
9 10 (22.22%) Ant
9 10 (22.22%) Relational Database
9 10 (22.22%) SDLC
9 10 (22.22%) Git (software)
10 9 (20.00%) Data Transformation
10 9 (20.00%) Jenkins
10 9 (20.00%) Algorithms
10 9 (20.00%) JUnit
10 9 (20.00%) SQL Server
10 9 (20.00%) Data Modelling
10 9 (20.00%) QA
11 8 (17.78%) Maven
11 8 (17.78%) API Development
11 8 (17.78%) User Experience

Data Structures
Co-occurring IT Skills in the City of 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 5 (11.11%) Apache Spark
1 5 (11.11%) WebLogic
1 5 (11.11%) WebSphere
2 4 (8.89%) Apache Airflow
3 3 (6.67%) Luigi
4 2 (4.44%) Elasticsearch
5 1 (2.22%) Confluence
5 1 (2.22%) Drupal
5 1 (2.22%) NetWeaver
5 1 (2.22%) SugarCRM
Applications
1 2 (4.44%) Microsoft Excel
2 1 (2.22%) InVision
2 1 (2.22%) Sketch
2 1 (2.22%) Zeplin
Business Applications
1 1 (2.22%) SAP BPC
Cloud Services
1 7 (15.56%) AWS
2 5 (11.11%) GitHub
3 3 (6.67%) Azure
4 2 (4.44%) GCP
4 2 (4.44%) Power Platform
5 1 (2.22%) Amazon EMR
5 1 (2.22%) Amazon S3
5 1 (2.22%) Cloud Computing
5 1 (2.22%) PaaS
Communications & Networking
1 6 (13.33%) HTTP
2 2 (4.44%) Multicast
3 1 (2.22%) NAS
Database & Business Intelligence
1 12 (26.67%) NoSQL
2 10 (22.22%) Relational Database
3 9 (20.00%) SQL Server
4 6 (13.33%) Big Data
4 6 (13.33%) Hadoop
4 6 (13.33%) RDBMS
5 4 (8.89%) Data Warehouse
6 3 (6.67%) Apache Cassandra
6 3 (6.67%) Azkaban
6 3 (6.67%) DB2
6 3 (6.67%) MongoDB
6 3 (6.67%) PostgreSQL
6 3 (6.67%) Redis
7 2 (4.44%) Power BI
8 1 (2.22%) Apache Hive
8 1 (2.22%) Azure SQL Data Warehouse
8 1 (2.22%) Azure SQL Database
8 1 (2.22%) HBase
8 1 (2.22%) Looker
8 1 (2.22%) MariaDB
Development Applications
1 10 (22.22%) Ant
1 10 (22.22%) Git (software)
2 9 (20.00%) Jenkins
2 9 (20.00%) JUnit
3 8 (17.78%) Maven
4 5 (11.11%) git-flow
4 5 (11.11%) Gradle
4 5 (11.11%) JMeter
4 5 (11.11%) Mockito
5 3 (6.67%) TestNG
6 1 (2.22%) Axure RP
6 1 (2.22%) Eclipse
6 1 (2.22%) JIRA
6 1 (2.22%) Oracle Forms
6 1 (2.22%) TeamCity
General
1 12 (26.67%) Finance
2 7 (15.56%) Banking
3 2 (4.44%) Front Office
3 2 (4.44%) Public Sector
4 1 (2.22%) Financial Institution
4 1 (2.22%) Legal
4 1 (2.22%) Marketing
4 1 (2.22%) Retail
Job Titles
1 22 (48.89%) Developer
2 15 (33.33%) Java Developer
3 7 (15.56%) Analyst
3 7 (15.56%) Data Engineer
4 5 (11.11%) Data Analyst
5 4 (8.89%) Senior Developer
6 3 (6.67%) Business Analyst
6 3 (6.67%) Consultant
7 2 (4.44%) Python Developer
7 2 (4.44%) Python Engineer
7 2 (4.44%) Senior Analyst
7 2 (4.44%) Senior Data Analyst
7 2 (4.44%) Senior Java Developer
8 1 (2.22%) Data Consultant
8 1 (2.22%) Java Applications Developer
8 1 (2.22%) Junior Data Engineer
8 1 (2.22%) React Developer
8 1 (2.22%) Senior Data Engineer
8 1 (2.22%) Senior React Developer
8 1 (2.22%) Software Development Engineer
Libraries, Frameworks & Software Standards
1 13 (28.89%) HTML
1 13 (28.89%) HTML5
2 8 (17.78%) RESTful
3 7 (15.56%) CSS
3 7 (15.56%) REST
4 6 (13.33%) Spring
4 6 (13.33%) Web Services
5 5 (11.11%) J2EE
5 5 (11.11%) JSON
5 5 (11.11%) Kafka
5 5 (11.11%) RxJava
5 5 (11.11%) SOAP
5 5 (11.11%) Swing
5 5 (11.11%) XML
6 3 (6.67%) Spark Streaming
7 2 (4.44%) CSS3
7 2 (4.44%) FIX Protocol
7 2 (4.44%) JDBC
7 2 (4.44%) JMS
7 2 (4.44%) NumPy
Miscellaneous
1 11 (24.44%) Enterprise Software
2 9 (20.00%) Algorithms
3 8 (17.78%) User Experience
4 6 (13.33%) Fixed Income
5 5 (11.11%) Mobile App
5 5 (11.11%) Mobile Payment
6 3 (6.67%) Analytical Skills
7 2 (4.44%) Equities
7 2 (4.44%) Greenfield Project
7 2 (4.44%) Management Information System
8 1 (2.22%) Clustering
8 1 (2.22%) Derivative
8 1 (2.22%) OTC Derivatives
8 1 (2.22%) Reinsurance
Operating Systems
1 4 (8.89%) Linux
2 2 (4.44%) Windows
3 1 (2.22%) Unix
3 1 (2.22%) Windows Server
Processes & Methodologies
1 24 (53.33%) Agile Software Development
2 18 (40.00%) OO
3 15 (33.33%) Multithreading
4 13 (28.89%) Multithreaded Programming
5 12 (26.67%) Computer Science
6 10 (22.22%) SDLC
7 9 (20.00%) Data Modelling
7 9 (20.00%) Data Transformation
8 8 (17.78%) API Development
9 7 (15.56%) Analytics
9 7 (15.56%) Business Intelligence
9 7 (15.56%) Continuous Integration
9 7 (15.56%) DevOps
9 7 (15.56%) OOD
9 7 (15.56%) Web Development
10 6 (13.33%) Concurrent Programming
10 6 (13.33%) Electronic Trading
10 6 (13.33%) Open Source
10 6 (13.33%) Test Automation
10 6 (13.33%) Unit Testing
Programming Languages
1 22 (48.89%) SQL
2 21 (46.67%) Java
3 13 (28.89%) JavaScript
4 12 (26.67%) Python
5 7 (15.56%) C++
6 6 (13.33%) Java 8
7 5 (11.11%) Kotlin
8 3 (6.67%) AWK
8 3 (6.67%) R
8 3 (6.67%) Scala
8 3 (6.67%) sed
9 2 (4.44%) PHP
10 1 (2.22%) ABAP
10 1 (2.22%) C#
10 1 (2.22%) ES6
10 1 (2.22%) MATLAB
10 1 (2.22%) PowerShell
10 1 (2.22%) Ruby
10 1 (2.22%) VBA
Qualifications
1 15 (33.33%) Degree
2 7 (15.56%) Computer Science Degree
3 3 (6.67%) Master's Degree
4 1 (2.22%) CISM
4 1 (2.22%) ITIL Certification
4 1 (2.22%) SAP Certification
Quality Assurance & Compliance
1 9 (20.00%) QA
2 5 (11.11%) Data Quality
3 1 (2.22%) COBIT
3 1 (2.22%) GDPR
3 1 (2.22%) MiFID
System Software
1 1 (2.22%) Active Directory
1 1 (2.22%) DFS Replication
1 1 (2.22%) Docker
Systems Management
1 1 (2.22%) Ansible
1 1 (2.22%) Galera Cluster
1 1 (2.22%) Kibana
1 1 (2.22%) Kubernetes
1 1 (2.22%) Opscode Chef
1 1 (2.22%) Puppet
1 1 (2.22%) Terraform
Vendors
1 11 (24.44%) Oracle
2 4 (8.89%) Microsoft
3 3 (6.67%) Netezza
3 3 (6.67%) Sybase
3 3 (6.67%) Teradata
4 2 (4.44%) Solace
5 1 (2.22%) Adobe
5 1 (2.22%) Google
5 1 (2.22%) Informatica
5 1 (2.22%) SAP
5 1 (2.22%) Splunk
5 1 (2.22%) Tableau
5 1 (2.22%) Talend
5 1 (2.22%) Varonis
5 1 (2.22%) Veracode