Period
to 7 April 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 7 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
England > London
6 months to
7 Apr 2020
Same period 2019 Same period 2018
Rank 208 224 268
Rank change year-on-year +16 +44 +31
Contract jobs citing Data Structures 304 529 475
As % of all contract jobs advertised in London 1.23% 1.24% 1.02%
As % of the Miscellaneous category 3.49% 3.53% 2.83%
Number of daily rates quoted 187 378 337
Median daily rate £550 £575 £550
Median daily rate % change year-on-year -4.35% +4.55% +10.00%
10th Percentile £373 £400 £391
90th Percentile £763 £725 £688
England median daily rate £525 £515 £500
% change year-on-year +1.94% +3.00% +6.38%
Number of hourly rates quoted 1 0 6
Median hourly rate £57.50 - £41.00
10th Percentile £53.75 - £20.00
90th Percentile £61.25 - £63.13
England median hourly rate £35.00 £39.50 £61.25
% change year-on-year -11.39% -35.51% +88.46%

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 8,707 14,971 16,807
As % of all contract IT jobs advertised in London 35.09% 35.04% 36.06%
Number of daily rates quoted 6,050 10,511 11,986
Median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +5.26%
10th Percentile £305 £315 £308
90th Percentile £713 £700 £700
England median daily rate £475 £475 £463
% change year-on-year - +2.70% +5.11%
Number of hourly rates quoted 167 239 293
Median hourly rate £31.94 £25.00 £22.42
Median hourly rate % change year-on-year +27.76% +11.51% -5.28%
10th Percentile £12.63 £13.50 £12.49
90th Percentile £52.50 £52.10 £48.70
Median hourly rate £25.50 £21.34 £21.70
% change year-on-year +19.49% -1.66% +8.79%

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 7 April 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 7 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
Central London +42 82 £509 -9.15% 38
West London +36 11 £450 +2.86% 16
South London +35 9 £500 -6.98% 2
East London +43 1 - - 9
Data Structures
England

For the 6 months to 7 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 London region with a requirement for Data Structures.

1 136 (44.74%) Agile Software Development
2 120 (39.47%) Java
3 116 (38.16%) SQL
4 108 (35.53%) Finance
5 95 (31.25%) Algorithms
6 93 (30.59%) OO
7 76 (25.00%) Computer Science
8 75 (24.67%) JavaScript
9 74 (24.34%) Python
10 69 (22.70%) Multithreading
11 68 (22.37%) AWS
12 66 (21.71%) Analytical Skills
13 61 (20.07%) Problem-Solving
14 59 (19.41%) SQL Server
14 59 (19.41%) Azure
15 57 (18.75%) Analytics
16 55 (18.09%) NoSQL
16 55 (18.09%) Banking
17 54 (17.76%) User Experience
18 50 (16.45%) TDD
19 47 (15.46%) Data Modelling
20 46 (15.13%) OOD
20 46 (15.13%) Linux
21 45 (14.80%) Front Office
21 45 (14.80%) GCP
22 44 (14.47%) Test Automation
22 44 (14.47%) CSS
22 44 (14.47%) Web Services
23 43 (14.14%) Business Intelligence
24 42 (13.82%) Oracle

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 26 (8.55%) Apache Spark
2 8 (2.63%) WebLogic
2 8 (2.63%) WebSphere
3 7 (2.30%) Cloud Foundry
3 7 (2.30%) Confluence
4 6 (1.97%) Elasticsearch
5 5 (1.64%) Apache Airflow
5 5 (1.64%) BizTalk Server
5 5 (1.64%) IBM Notes
6 4 (1.32%) Luigi
7 2 (0.66%) Apache
7 2 (0.66%) IIS
7 2 (0.66%) Jupyter
7 2 (0.66%) NetWeaver
7 2 (0.66%) SAS
8 1 (0.33%) Drupal
8 1 (0.33%) SugarCRM
8 1 (0.33%) Tomcat
Applications
1 12 (3.95%) Microsoft Excel
2 7 (2.30%) InVision
2 7 (2.30%) Sketch
2 7 (2.30%) Zeplin
Business Applications
1 2 (0.66%) Maximo
1 2 (0.66%) Oracle Financials
1 2 (0.66%) SAP BPC
1 2 (0.66%) SAP HR
2 1 (0.33%) FINCAD Analytics
2 1 (0.33%) Infor M3
2 1 (0.33%) ION MarketView
2 1 (0.33%) NetSuite
2 1 (0.33%) SAP MDM
2 1 (0.33%) Teamcenter
Cloud Services
1 68 (22.37%) AWS
2 59 (19.41%) Azure
3 45 (14.80%) GCP
4 17 (5.59%) Heroku
5 13 (4.28%) Amazon S3
6 11 (3.62%) Amazon EC2
6 11 (3.62%) Power Platform
7 9 (2.96%) Amazon EMR
7 9 (2.96%) AWS Lambda
7 9 (2.96%) GitHub
7 9 (2.96%) Serverless
8 7 (2.30%) Amazon Kinesis
9 6 (1.97%) Amazon Glacier
10 4 (1.32%) AWS CloudFormation
11 3 (0.99%) Amazon ECS
12 2 (0.66%) Cloud Computing
12 2 (0.66%) PaaS
13 1 (0.33%) Amazon SQS
13 1 (0.33%) Azure Stack
13 1 (0.33%) IaaS
Communications & Networking
1 19 (6.25%) HTTP
2 5 (1.64%) DKIM
3 2 (0.66%) Multicast
3 2 (0.66%) TCP/IP
4 1 (0.33%) Kerberos
4 1 (0.33%) NAS
4 1 (0.33%) Skype
Database & Business Intelligence
1 59 (19.41%) SQL Server
2 55 (18.09%) NoSQL
3 32 (10.53%) Big Data
3 32 (10.53%) Relational Database
4 24 (7.89%) Data Warehouse
5 23 (7.57%) Hadoop
6 18 (5.92%) Azure SQL Database
6 18 (5.92%) MongoDB
7 16 (5.26%) SQL Server Integration Services
8 13 (4.28%) Apache Cassandra
9 12 (3.95%) BigQuery
10 11 (3.62%) PostgreSQL
10 11 (3.62%) Power BI
11 10 (3.29%) Amazon Redshift
11 10 (3.29%) PowerCenter
12 8 (2.63%) Looker
12 8 (2.63%) MySQL
12 8 (2.63%) RDBMS
12 8 (2.63%) SAP HANA
13 7 (2.30%) Data Lake
Development Applications
1 36 (11.84%) Git (software)
2 33 (10.86%) Jenkins
3 22 (7.24%) JUnit
4 20 (6.58%) JIRA
5 19 (6.25%) Maven
5 19 (6.25%) webpack
6 14 (4.61%) Ant
7 10 (3.29%) Subversion
8 8 (2.63%) git-flow
8 8 (2.63%) Gradle
8 8 (2.63%) JMeter
8 8 (2.63%) Mockito
9 6 (1.97%) Axure RP
9 6 (1.97%) ERwin
9 6 (1.97%) TestNG
10 5 (1.64%) ER Studio
11 3 (0.99%) GitLab
11 3 (0.99%) TeamCity
12 2 (0.66%) Atlassian Bamboo
12 2 (0.66%) PROIV
General
1 108 (35.53%) Finance
2 55 (18.09%) Banking
3 45 (14.80%) Front Office
4 20 (6.58%) Public Sector
5 15 (4.93%) Investment Banking
6 11 (3.62%) Games
7 9 (2.96%) Manufacturing
8 6 (1.97%) Marketing
9 4 (1.32%) Electronics
9 4 (1.32%) Retail
9 4 (1.32%) Telecoms
10 3 (0.99%) Back Office
10 3 (0.99%) Financial Institution
10 3 (0.99%) Legal
10 3 (0.99%) Local Government
10 3 (0.99%) Publishing
11 1 (0.33%) Multimedia
Job Titles
1 159 (52.30%) Developer
2 68 (22.37%) Senior Developer
3 61 (20.07%) Java Developer
4 40 (13.16%) Data Engineer
5 30 (9.87%) Digital Developer
5 30 (9.87%) Senior Java Developer
6 19 (6.25%) React Developer
7 16 (5.26%) Python Developer
8 15 (4.93%) Analyst
8 15 (4.93%) Senior React Developer
9 14 (4.61%) Node.js Developer
10 12 (3.95%) Consultant
10 12 (3.95%) Java Engineer
10 12 (3.95%) Python Engineer
10 12 (3.95%) SQL Developer
11 11 (3.62%) Algorithmic Trading Developer
11 11 (3.62%) AWS Engineer
11 11 (3.62%) Java Developer - Algorithmic Trading
12 10 (3.29%) Architect
12 10 (3.29%) Senior Algorithmic Trading Developer
Libraries, Frameworks & Software Standards
1 44 (14.47%) CSS
1 44 (14.47%) Web Services
2 34 (11.18%) HTML
3 33 (10.86%) REST
4 32 (10.53%) HTML5
5 26 (8.55%) Kafka
6 24 (7.89%) Spring
7 23 (7.57%) React
8 21 (6.91%) Redux
9 20 (6.58%) Node.js
10 19 (6.25%) Jest
11 18 (5.92%) JSON
12 17 (5.59%) GraphQL
13 16 (5.26%) RESTful
14 15 (4.93%) D3.js
14 15 (4.93%) FIX Protocol
14 15 (4.93%) SOAP
15 13 (4.28%) .NET
16 12 (3.95%) AngularJS
16 12 (3.95%) XML
Miscellaneous
1 95 (31.25%) Algorithms
2 66 (21.71%) Analytical Skills
3 54 (17.76%) User Experience
4 30 (9.87%) Foreign Exchange (FX)
5 20 (6.58%) Enterprise Software
6 16 (5.26%) Equities
7 13 (4.28%) Fixed Income
8 8 (2.63%) Mobile App
8 8 (2.63%) Mobile Payment
9 6 (1.97%) Grid Computing
9 6 (1.97%) Management Information System
10 5 (1.64%) Cloud Native
10 5 (1.64%) Self-Motivation
11 4 (1.32%) Derivative
11 4 (1.32%) Mobile Games
12 3 (0.99%) Greenfield Project
12 3 (0.99%) Linux Command Line
12 3 (0.99%) Video on Demand
12 3 (0.99%) Video\Live Streaming
13 2 (0.66%) PDA
Operating Systems
1 46 (15.13%) Linux
2 22 (7.24%) Unix
3 14 (4.61%) Windows
4 8 (2.63%) Android
5 7 (2.30%) Apple iOS
6 2 (0.66%) Windows Server 2008
6 2 (0.66%) Windows Server 2012
7 1 (0.33%) Windows Server
Processes & Methodologies
1 136 (44.74%) Agile Software Development
2 93 (30.59%) OO
3 76 (25.00%) Computer Science
4 69 (22.70%) Multithreading
5 61 (20.07%) Problem-Solving
6 57 (18.75%) Analytics
7 50 (16.45%) TDD
8 47 (15.46%) Data Modelling
9 46 (15.13%) OOD
10 44 (14.47%) Test Automation
11 43 (14.14%) Business Intelligence
12 37 (12.17%) Multithreaded Programming
13 34 (11.18%) ETL
14 31 (10.20%) Concurrent Programming
15 30 (9.87%) Continuous Integration
15 30 (9.87%) Visualisation
16 29 (9.54%) Data Transformation
17 28 (9.21%) Low Latency
18 27 (8.88%) Open Source
19 23 (7.57%) Algorithmic Trading
Programming Languages
1 120 (39.47%) Java
2 116 (38.16%) SQL
3 75 (24.67%) JavaScript
4 74 (24.34%) Python
5 37 (12.17%) C#
6 22 (7.24%) Scala
7 21 (6.91%) C++
7 21 (6.91%) TypeScript
8 19 (6.25%) Kotlin
9 18 (5.92%) ES6
9 18 (5.92%) Java 8
10 14 (4.61%) Go
11 7 (2.30%) R
12 6 (1.97%) Clojure
12 6 (1.97%) Groovy
12 6 (1.97%) Haskell
12 6 (1.97%) T-SQL
13 4 (1.32%) ABAP
14 3 (0.99%) PL/SQL
14 3 (0.99%) PowerShell
Qualifications
1 31 (10.20%) Degree
2 15 (4.93%) Computer Science Degree
2 15 (4.93%) Security Cleared
3 13 (4.28%) SC Cleared
4 7 (2.30%) Master's Degree
5 4 (1.32%) PhD
6 3 (0.99%) CISM
7 2 (0.66%) ISEB
7 2 (0.66%) ISEB Practitioner
7 2 (0.66%) ITIL Certification
7 2 (0.66%) SAP Certification
8 1 (0.33%) CTC Cleared
8 1 (0.33%) DV Cleared
8 1 (0.33%) Numerate Degree
Quality Assurance & Compliance
1 18 (5.92%) Data Quality
2 13 (4.28%) QA
3 3 (0.99%) COBIT
4 2 (0.66%) GDPR
4 2 (0.66%) SLA
5 1 (0.33%) IFRS
5 1 (0.33%) MiFID
5 1 (0.33%) WCAG
System Software
1 31 (10.20%) Docker
2 1 (0.33%) Active Directory
2 1 (0.33%) DFS Replication
2 1 (0.33%) HDFS
2 1 (0.33%) Oracle Clusterware
2 1 (0.33%) Oracle RAC
Systems Management
1 29 (9.54%) Kubernetes
2 19 (6.25%) Terraform
3 1 (0.33%) Ansible
3 1 (0.33%) Control-M
3 1 (0.33%) Data Guard
3 1 (0.33%) Galera Cluster
3 1 (0.33%) Kibana
3 1 (0.33%) Opscode Chef
3 1 (0.33%) Oracle Flashback
3 1 (0.33%) Oracle RMAN
3 1 (0.33%) Puppet
3 1 (0.33%) Tivoli
Vendors
1 42 (13.82%) Oracle
2 23 (7.57%) Microsoft
3 21 (6.91%) SAP
4 17 (5.59%) Informatica
4 17 (5.59%) Talend
5 15 (4.93%) Google
6 10 (3.29%) Ab Initio
7 9 (2.96%) Tableau
8 6 (1.97%) Adobe
8 6 (1.97%) hybris
9 5 (1.64%) Charles River
9 5 (1.64%) Lotus
9 5 (1.64%) Teradata
9 5 (1.64%) TIBCO
10 4 (1.32%) Salesforce.com
10 4 (1.32%) Sybase
11 3 (0.99%) DevExpress
11 3 (0.99%) Netezza
11 3 (0.99%) Northgate
11 3 (0.99%) Splunk