Period
to 19 September 2021

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 19 September 2021 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
19 Sep 2021
Same period 2020 Same period 2019
Rank 112 110 178
Rank change year-on-year -2 +68 +3
Contract jobs citing Data Structures 54 15 59
As % of all contract jobs advertised in the City of London 1.51% 0.85% 0.94%
As % of the Miscellaneous category 3.92% 2.49% 3.17%
Number of daily rates quoted 41 10 48
10th Percentile £461 £425 £410
25th Percentile £550 £463 £509
Median daily rate (50th Percentile) £650 £551 £575
Median % change year-on-year +17.97% -4.17% +15.00%
75th Percentile £688 £646 £606
90th Percentile £813 £780 £644
Central London median daily rate £650 £545 £550
% change year-on-year +19.27% -0.91% +10.00%
Number of hourly rates quoted 0 0 1
Median hourly rate - - £12.50
Central London median hourly rate - - £12.50

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 1,378 602 1,864
As % of all contract IT jobs advertised in the City of London 38.44% 34.28% 29.78%
Number of daily rates quoted 994 396 1,420
10th Percentile £381 £313 £319
25th Percentile £489 £413 £431
Median daily rate (50th Percentile) £600 £525 £525
Median % change year-on-year +14.29% - -
75th Percentile £688 £620 £625
90th Percentile £775 £693 £688
Central London median daily rate £600 £525 £525
% change year-on-year +14.29% - -
Number of hourly rates quoted 26 25 34
10th Percentile £8.00 £16.00 £11.25
25th Percentile £19.44 £31.00 £12.76
Median hourly rate £33.45 £37.75 £20.25
Median % change year-on-year -11.39% +86.42% +5.19%
75th Percentile £42.63 £47.75 £33.61
90th Percentile £62.25 £53.00 £46.23
Central London median hourly rate £30.25 £37.50 £20.50
% change year-on-year -19.33% +82.93% +5.81%

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 19 September 2021.

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 19 September 2021. 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
London Bridge - 4 £650 -
Data Structures
Central London

For the 6 months to 19 September 2021, 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 20 (37.04%) Java
2 18 (33.33%) Agile Software Development
2 18 (33.33%) Multithreading
3 17 (31.48%) SQL
4 15 (27.78%) Analytical Skills
5 14 (25.93%) DevOps
5 14 (25.93%) JavaScript
6 13 (24.07%) HTML
6 13 (24.07%) Finance
7 12 (22.22%) Scala
8 11 (20.37%) Azure
8 11 (20.37%) CSS
9 10 (18.52%) Python
9 10 (18.52%) Spring
9 10 (18.52%) AWS
9 10 (18.52%) React
10 9 (16.67%) Algorithms
10 9 (16.67%) Microservices
11 8 (14.81%) GCP
11 8 (14.81%) BDD
11 8 (14.81%) AngularJS
11 8 (14.81%) Web Development
11 8 (14.81%) TDD
11 8 (14.81%) Banking
11 8 (14.81%) Oracle
12 7 (12.96%) Web Services
12 7 (12.96%) Analytics
13 6 (11.11%) HTML5
13 6 (11.11%) Docker
13 6 (11.11%) Vue.js

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 4 (7.41%) Apache Spark
2 2 (3.70%) CMS
3 1 (1.85%) Confluence
3 1 (1.85%) Elasticsearch
3 1 (1.85%) GemFire
Applications
1 1 (1.85%) Microsoft PowerPoint
Cloud Services
1 11 (20.37%) Azure
2 10 (18.52%) AWS
3 8 (14.81%) GCP
4 3 (5.56%) AWS CloudFormation
4 3 (5.56%) Serverless
5 2 (3.70%) Amazon ECS
5 2 (3.70%) Azure Service Bus
5 2 (3.70%) PaaS
6 1 (1.85%) Amazon S3
6 1 (1.85%) AWS CodePipeline
6 1 (1.85%) AWS Lambda
6 1 (1.85%) AWS Step Functions
6 1 (1.85%) Power Platform
Database & Business Intelligence
1 4 (7.41%) Apache Hive
1 4 (7.41%) Big Data
1 4 (7.41%) Hadoop
1 4 (7.41%) NoSQL
2 3 (5.56%) BigQuery
3 2 (3.70%) Data Warehouse
3 2 (3.70%) MariaDB
3 2 (3.70%) MySQL
3 2 (3.70%) Redis
3 2 (3.70%) Relational Database
3 2 (3.70%) Spark SQL
4 1 (1.85%) Amazon DynamoDB
4 1 (1.85%) Hazelcast
4 1 (1.85%) MongoDB
4 1 (1.85%) Oracle Database 11g
4 1 (1.85%) PostgreSQL
4 1 (1.85%) Power BI
4 1 (1.85%) RDBMS
4 1 (1.85%) SQL Server
4 1 (1.85%) SQL Server Integration Services
Development Applications
1 5 (9.26%) Git (software)
1 5 (9.26%) JIRA
1 5 (9.26%) webpack
2 4 (7.41%) Grunt
2 4 (7.41%) gulp
2 4 (7.41%) Jasmine
2 4 (7.41%) Jenkins
2 4 (7.41%) PhantomJS
3 3 (5.56%) Gradle
3 3 (5.56%) Maven
4 2 (3.70%) Subversion
5 1 (1.85%) Ant
5 1 (1.85%) ANTLR
5 1 (1.85%) Artifactory
5 1 (1.85%) Mocha
5 1 (1.85%) Visual Studio
5 1 (1.85%) Visual Studio Team System
General
1 15 (27.78%) Analytical Skills
2 13 (24.07%) Finance
3 8 (14.81%) Banking
4 6 (11.11%) Front Office
5 2 (3.70%) Investment Banking
5 2 (3.70%) Retail
6 1 (1.85%) Advertising
6 1 (1.85%) Marketing
6 1 (1.85%) Social Skills
6 1 (1.85%) Telecoms
Job Titles
1 36 (66.67%) Developer
2 15 (27.78%) Java Developer
3 7 (12.96%) Scala Developer
4 4 (7.41%) Analyst
4 4 (7.41%) Architect
4 4 (7.41%) Front End Developer (Client-Side Developer)
4 4 (7.41%) Java Scala Developer
4 4 (7.41%) Lead Developer
4 4 (7.41%) Lead Java Developer
4 4 (7.41%) Python Developer
4 4 (7.41%) SQL Developer
4 4 (7.41%) Technical Developer
4 4 (7.41%) Technical Leader
5 3 (5.56%) Analytics Developer
5 3 (5.56%) Apache Spark Developer
5 3 (5.56%) Data Analyst
5 3 (5.56%) Data Engineer
5 3 (5.56%) Technical Architect
6 2 (3.70%) Developer/Software Engineer
6 2 (3.70%) Scala Software Engineer
Libraries, Frameworks & Software Standards
1 13 (24.07%) HTML
2 11 (20.37%) CSS
3 10 (18.52%) React
3 10 (18.52%) Spring
4 8 (14.81%) AngularJS
5 7 (12.96%) Web Services
6 6 (11.11%) HTML5
6 6 (11.11%) RESTful
6 6 (11.11%) Vue.js
7 5 (9.26%) CSS3
7 5 (9.26%) Sass
7 5 (9.26%) Spring Boot
8 4 (7.41%) Jest
8 4 (7.41%) jQuery
8 4 (7.41%) REST
9 3 (5.56%) Node.js
10 2 (3.70%) Express
10 2 (3.70%) Flask
10 2 (3.70%) Kafka
10 2 (3.70%) RAML
Miscellaneous
1 9 (16.67%) Algorithms
2 3 (5.56%) Enterprise Software
3 2 (3.70%) Clustering
3 2 (3.70%) Derivative
3 2 (3.70%) Foreign Exchange (FX)
3 2 (3.70%) Greenfield Project
3 2 (3.70%) Interest Rate Derivative
3 2 (3.70%) Legacy Systems
4 1 (1.85%) Client/Server
4 1 (1.85%) Cloud Native
4 1 (1.85%) CMDB
4 1 (1.85%) Credit Risk
4 1 (1.85%) Data Centre
4 1 (1.85%) EPoS
4 1 (1.85%) Fixed Income
4 1 (1.85%) Management Information System
4 1 (1.85%) User Experience
Operating Systems
1 3 (5.56%) Linux
2 2 (3.70%) Red Hat Enterprise Linux
2 2 (3.70%) Unix
3 1 (1.85%) Windows
Processes & Methodologies
1 18 (33.33%) Agile Software Development
1 18 (33.33%) Multithreading
2 14 (25.93%) DevOps
3 9 (16.67%) Microservices
4 8 (14.81%) BDD
4 8 (14.81%) TDD
4 8 (14.81%) Web Development
5 7 (12.96%) Analytics
6 6 (11.11%) OO
7 5 (9.26%) API Design
7 5 (9.26%) Build Automation
7 5 (9.26%) Business Intelligence
7 5 (9.26%) Continuous Deployment
7 5 (9.26%) Data Modelling
7 5 (9.26%) Problem-Solving
7 5 (9.26%) User Stories
8 4 (7.41%) Front End Development
8 4 (7.41%) Machine Learning
8 4 (7.41%) Performance Tuning
8 4 (7.41%) Wireframes
Programming Languages
1 20 (37.04%) Java
2 17 (31.48%) SQL
3 14 (25.93%) JavaScript
4 12 (22.22%) Scala
5 10 (18.52%) Python
6 5 (9.26%) ES6
7 3 (5.56%) C#
7 3 (5.56%) Java 8
8 2 (3.70%) C++
8 2 (3.70%) F#
8 2 (3.70%) Java 11
8 2 (3.70%) PHP
9 1 (1.85%) Clojure
9 1 (1.85%) Go
9 1 (1.85%) Haskell
9 1 (1.85%) PL/SQL
9 1 (1.85%) Rust
9 1 (1.85%) TypeScript
Qualifications
1 1 (1.85%) DBS Check
1 1 (1.85%) Degree
1 1 (1.85%) SC Cleared
1 1 (1.85%) Security Cleared
Quality Assurance & Compliance
1 2 (3.70%) QA
2 1 (1.85%) Accessibility
2 1 (1.85%) Data Quality
2 1 (1.85%) GDPR
System Software
1 6 (11.11%) Docker
2 1 (1.85%) HDFS
Systems Management
1 5 (9.26%) Opscode Chef
2 3 (5.56%) Kubernetes
3 2 (3.70%) Ansible
4 1 (1.85%) BladeLogic
4 1 (1.85%) ITRS Geneos
4 1 (1.85%) Puppet
4 1 (1.85%) SCCM
4 1 (1.85%) Terraform
4 1 (1.85%) vCenter Server
Vendors
1 8 (14.81%) Oracle
2 2 (3.70%) Atlassian
2 2 (3.70%) Cisco
2 2 (3.70%) F5
2 2 (3.70%) Juniper
2 2 (3.70%) Microsoft
2 2 (3.70%) Red Hat
3 1 (1.85%) Adobe
3 1 (1.85%) Alteryx
3 1 (1.85%) Altiris
3 1 (1.85%) Anaplan
3 1 (1.85%) ServiceNow
3 1 (1.85%) SolarWinds