Period
to

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 1 July 2022 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
1 Jul 2022
Same period 2021 Same period 2020
Rank 153 125 117
Rank change year-on-year -28 -8 +40
Contract jobs citing Data Structures 42 42 24
As % of all contract jobs advertised in the City of London 0.97% 1.33% 0.88%
As % of the Miscellaneous category 2.87% 3.38% 2.69%
Number of daily rates quoted 23 36 13
10th Percentile £425 £400 £401
25th Percentile £500 £544 £413
Median daily rate (50th Percentile) £625 £588 £525
Median % change year-on-year +6.38% +11.90% -8.70%
75th Percentile £753 £628 £588
90th Percentile £800 £663 £794
Central London median daily rate £588 £588 £525
% change year-on-year - +11.90% -8.70%
Number of hourly rates quoted 0 0 1
10th Percentile - - -
25th Percentile - - £53.75
Median hourly rate - - £57.50
75th Percentile - - £61.25
90th Percentile - - -
Central London median hourly rate - - £57.50
% change year-on-year - - +360.00%

Data Structures is in the General and Transferable 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 Skills
City of London
Contract vacancies with a requirement for generic IT skills 1,465 1,243 891
As % of all contract IT jobs advertised in the City of London 33.81% 39.26% 32.75%
Number of daily rates quoted 1,039 867 634
10th Percentile £400 £375 £307
25th Percentile £494 £463 £414
Median daily rate (50th Percentile) £580 £583 £525
Median % change year-on-year -0.43% +10.95% -
75th Percentile £707 £675 £625
90th Percentile £825 £738 £688
Central London median daily rate £575 £575 £525
% change year-on-year - +9.52% -
Number of hourly rates quoted 27 21 29
10th Percentile £18.50 £8.00 £12.42
25th Percentile £27.25 £12.38 £15.00
Median hourly rate £45.50 £21.50 £32.25
Median % change year-on-year +111.63% -33.33% +59.26%
75th Percentile £54.50 £37.25 £39.25
90th Percentile £63.35 £42.25 £49.50
Central London median hourly rate £45.50 £20.00 £33.50
% change year-on-year +127.50% -40.30% +63.41%

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 1 July 2022.

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

For the 6 months to 1 July 2022, 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 23 (54.76%) Python
2 16 (38.10%) SQL
3 12 (28.57%) Big Data
3 12 (28.57%) Analytical Skills
3 12 (28.57%) Algorithms
4 11 (26.19%) Data Modelling
4 11 (26.19%) Finance
5 10 (23.81%) OO
5 10 (23.81%) Oracle
5 10 (23.81%) Apache Spark
6 9 (21.43%) Metadata
6 9 (21.43%) Data Pipeline
6 9 (21.43%) GDPR
6 9 (21.43%) Microservices
6 9 (21.43%) Legal
6 9 (21.43%) Financial Institution
6 9 (21.43%) Agile
6 9 (21.43%) Data Management
6 9 (21.43%) AOP
6 9 (21.43%) Data Protection
6 9 (21.43%) Azure
6 9 (21.43%) Hedge funds
7 7 (16.67%) AWS
7 7 (16.67%) Data Architecture
7 7 (16.67%) Scala
7 7 (16.67%) Java
8 6 (14.29%) Hadoop
8 6 (14.29%) Scrum
8 6 (14.29%) React
8 6 (14.29%) Kafka

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 10 (23.81%) Apache Spark
2 4 (9.52%) Apache Pig
2 4 (9.52%) Tomcat
3 3 (7.14%) WebLogic
4 2 (4.76%) Apache
5 1 (2.38%) Confluence
5 1 (2.38%) JBoss
5 1 (2.38%) WebSphere
Applications
1 4 (9.52%) Microsoft Excel
Business Applications
1 1 (2.38%) Orchestrade
1 1 (2.38%) Sparx Enterprise Architect
Cloud Services
1 9 (21.43%) Azure
2 7 (16.67%) AWS
3 3 (7.14%) Power Platform
4 2 (4.76%) Snowflake
5 1 (2.38%) Azure Data Factory
5 1 (2.38%) Azure DevOps
5 1 (2.38%) Azure Functions
5 1 (2.38%) GCP
5 1 (2.38%) GitHub
5 1 (2.38%) IaaS
5 1 (2.38%) PaaS
5 1 (2.38%) Salesforce Service Cloud
5 1 (2.38%) Serverless
Database & Business Intelligence
1 12 (28.57%) Big Data
2 9 (21.43%) Metadata
3 6 (14.29%) Data Lake
3 6 (14.29%) Hadoop
4 4 (9.52%) Apache Hive
4 4 (9.52%) Data Warehouse
4 4 (9.52%) HBase
4 4 (9.52%) SQL Server
5 3 (7.14%) Oracle Database
5 3 (7.14%) Power BI
5 3 (7.14%) Relational Database
6 2 (4.76%) Data Mart
7 1 (2.38%) Azure SQL Database
7 1 (2.38%) BusinessObjects
7 1 (2.38%) BusinessObjects Business Intelligence
7 1 (2.38%) PostgreSQL
7 1 (2.38%) QlikView
7 1 (2.38%) RDBMS
Development Applications
1 4 (9.52%) Eclipse
1 4 (9.52%) IntelliJ
1 4 (9.52%) JIRA
2 2 (4.76%) PowerDesigner
3 1 (2.38%) ERwin
3 1 (2.38%) Gerrit
3 1 (2.38%) Git (software)
3 1 (2.38%) JUnit
3 1 (2.38%) NetBeans
3 1 (2.38%) Postman
3 1 (2.38%) PyCharm
3 1 (2.38%) Visual Studio Code
3 1 (2.38%) VSS/SourceSafe
General
1 12 (28.57%) Analytical Skills
2 11 (26.19%) Finance
3 9 (21.43%) Financial Institution
3 9 (21.43%) Legal
4 3 (7.14%) Social Skills
5 2 (4.76%) Banking
5 2 (4.76%) Games
6 1 (2.38%) Front Office
6 1 (2.38%) Presentation Skills
Job Titles
1 19 (45.24%) Developer
2 6 (14.29%) Architect
2 6 (14.29%) Data Engineer
3 5 (11.90%) Cloud Engineer
3 5 (11.90%) Data Architect
4 4 (9.52%) Big Data Developer
5 3 (7.14%) Analyst
5 3 (7.14%) AWS Developer
5 3 (7.14%) Python Developer
5 3 (7.14%) Senior Cloud Engineer
5 3 (7.14%) Senior Data Engineer
5 3 (7.14%) Senior Developer
6 2 (4.76%) Administrator
6 2 (4.76%) Azure Engineer
6 2 (4.76%) Data Analyst
6 2 (4.76%) Full Stack Developer
6 2 (4.76%) Java Developer
6 2 (4.76%) Python Web Developer
6 2 (4.76%) React Developer
6 2 (4.76%) Web Developer
Libraries, Frameworks & Software Standards
1 6 (14.29%) Kafka
1 6 (14.29%) React
2 5 (11.90%) Node.js
2 5 (11.90%) PySpark
2 5 (11.90%) REST
2 5 (11.90%) Spark Streaming
3 4 (9.52%) AngularJS
3 4 (9.52%) CSS
3 4 (9.52%) HTML
3 4 (9.52%) J2EE
3 4 (9.52%) RabbitMQ
4 3 (7.14%) .NET
5 2 (4.76%) CSS3
5 2 (4.76%) Django
5 2 (4.76%) HTML5
5 2 (4.76%) jQuery
5 2 (4.76%) TinkerPop
5 2 (4.76%) Vue.js
6 1 (2.38%) GraphQL
6 1 (2.38%) gRPC
Miscellaneous
1 12 (28.57%) Algorithms
2 9 (21.43%) Hedge funds
3 3 (7.14%) Cloud Native
3 3 (7.14%) Credit Risk
4 1 (2.38%) Blockchain
4 1 (2.38%) Foreign Exchange (FX)
4 1 (2.38%) Management Information System
4 1 (2.38%) Reference Data
4 1 (2.38%) Virtual Team
Operating Systems
1 1 (2.38%) Linux
1 1 (2.38%) Unix
Processes & Methodologies
1 11 (26.19%) Data Modelling
2 10 (23.81%) OO
3 9 (21.43%) Agile
3 9 (21.43%) AOP
3 9 (21.43%) Data Management
3 9 (21.43%) Data Pipeline
3 9 (21.43%) Data Protection
3 9 (21.43%) Microservices
4 7 (16.67%) Data Architecture
5 6 (14.29%) Scrum
6 5 (11.90%) Analytics
6 5 (11.90%) Data Munging
6 5 (11.90%) Data Transformation
6 5 (11.90%) DevOps
6 5 (11.90%) ETL
6 5 (11.90%) Software Engineering
6 5 (11.90%) Test Automation
6 5 (11.90%) Workload Management
7 4 (9.52%) Data Flow Diagram
7 4 (9.52%) Full Stack Development
Programming Languages
1 23 (54.76%) Python
2 16 (38.10%) SQL
3 7 (16.67%) Java
3 7 (16.67%) Scala
4 4 (9.52%) JavaScript
5 2 (4.76%) Gremlin
5 2 (4.76%) R
5 2 (4.76%) VB.NET
5 2 (4.76%) VBA
6 1 (2.38%) C#
6 1 (2.38%) C++
6 1 (2.38%) PL/SQL
6 1 (2.38%) Shell Script
6 1 (2.38%) T-SQL
Qualifications
1 2 (4.76%) Degree
1 2 (4.76%) Numerate Degree
2 1 (2.38%) ISEB
2 1 (2.38%) Sun Certification
Quality Assurance & Compliance
1 9 (21.43%) GDPR
2 4 (9.52%) Data Quality
3 2 (4.76%) QA
Systems Management
1 1 (2.38%) Ambari
Vendors
1 10 (23.81%) Oracle
2 5 (11.90%) Databricks
3 3 (7.14%) SAP
4 2 (4.76%) Microsoft
5 1 (2.38%) Avaloq
5 1 (2.38%) Cloudera
5 1 (2.38%) Google
5 1 (2.38%) IBM
5 1 (2.38%) Salesforce.com
5 1 (2.38%) Sparx
5 1 (2.38%) Sun
5 1 (2.38%) Teradata
5 1 (2.38%) Workday