Period
to 17 February 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 17 February 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
17 Feb 2020
Same period 2019 Same period 2018
Rank 138 162 167
Rank change year-on-year +24 +5 +39
Contract jobs citing Data Structures 89 135 126
As % of all contract IT jobs advertised in Central London 1.50% 1.53% 1.42%
As % of the Miscellaneous category 4.42% 4.09% 3.58%
Number of daily rates quoted 48 78 103
Central London median daily rate £523 £560 £575
Median daily rate % change year-on-year -6.70% -2.61% +21.05%
10th Percentile £350 £421 £369
90th Percentile £700 £740 £813
London median daily rate £550 £575 £550
% change year-on-year -4.35% +4.55% +10.00%
Number of hourly rates quoted 1 4 1
Central London median hourly rate £57.50 £37.09 £28.00
Median hourly rate % change year-on-year +55.03% +32.46% -
10th Percentile £53.75 £37.09 £26.00
90th Percentile £61.25 £40.66 £30.00
London median hourly rate £57.50 £37.09 £55.00
% change year-on-year +55.03% -32.56% +69.23%

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 2,012 3,298 3,521
As % of all contract IT jobs advertised in Central London 34.00% 37.41% 39.59%
Number of daily rates quoted 1,469 2,421 2,735
Central London median daily rate £505 £525 £525
Median daily rate % change year-on-year -3.81% - +10.53%
10th Percentile £281 £300 £313
90th Percentile £688 £700 £713
London median daily rate £513 £525 £500
% change year-on-year -2.38% +5.00% +5.26%
Number of hourly rates quoted 39 52 45
Central London median hourly rate £22.50 £18.70 £21.50
Median hourly rate % change year-on-year +20.32% -13.02% +13.16%
10th Percentile £12.42 £13.00 £12.60
90th Percentile £52.25 £36.83 £47.35
London median hourly rate £25.00 £23.50 £22.75
% change year-on-year +6.38% +3.30% +3.41%

Data Structures
Job Vacancy Trend in Central London

Job postings citing Data Structures as a percentage 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

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Data Structures in Central London.

Contractor daily rate trend for Data Structures in Central London

Data Structures
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing Data Structures in Central London over the 6 months to 17 February 2020.

Contractor daily rate histogram for Data Structures in Central London

Data Structures
Contractor Hourly Rate Trend in Central London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Data Structures in Central London.

Contractor 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 17 February 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 +16 50 £523 -5.86% 48
City of Westminster - 2 £525 -
Data Structures
London

For the 6 months to 17 February 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 48 (53.93%) SQL
2 47 (52.81%) Agile Software Development
3 42 (47.19%) OO
4 38 (42.70%) Computer Science
5 37 (41.57%) Finance
5 37 (41.57%) Algorithms
6 36 (40.45%) JavaScript
7 33 (37.08%) Test Automation
8 29 (32.58%) User Experience
8 29 (32.58%) Problem-Solving
9 28 (31.46%) Analytical Skills
9 28 (31.46%) Java
10 25 (28.09%) Azure
11 24 (26.97%) NoSQL
11 24 (26.97%) OOD
12 22 (24.72%) AWS
13 19 (21.35%) Python
14 18 (20.22%) Degree
14 18 (20.22%) Analytics
15 17 (19.10%) Multithreading
15 17 (19.10%) CSS
16 16 (17.98%) GCP
17 15 (16.85%) C++
17 15 (16.85%) ETL
17 15 (16.85%) Data Modelling
17 15 (16.85%) Docker
18 14 (15.73%) Data Visualisation
18 14 (15.73%) Big Data
18 14 (15.73%) Hadoop
18 14 (15.73%) Visualisation

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 12 (13.48%) Apache Spark
2 5 (5.62%) Confluence
2 5 (5.62%) WebLogic
2 5 (5.62%) WebSphere
3 4 (4.49%) Apache Airflow
4 3 (3.37%) Camunda
4 3 (3.37%) Elasticsearch
4 3 (3.37%) Luigi
5 2 (2.25%) Cloud Foundry
5 2 (2.25%) Ethereum
5 2 (2.25%) Hyperledger
5 2 (2.25%) OpenStack
6 1 (1.12%) BizTalk Server
6 1 (1.12%) CMS
6 1 (1.12%) Drupal
6 1 (1.12%) IBM Notes
6 1 (1.12%) SugarCRM
Applications
1 5 (5.62%) Microsoft Excel
Business Applications
1 2 (2.25%) Distributed Ledger
1 2 (2.25%) R3 Corda
2 1 (1.12%) Dynamics AX
2 1 (1.12%) SAP MDM
Cloud Services
1 25 (28.09%) Azure
2 22 (24.72%) AWS
3 16 (17.98%) GCP
4 11 (12.36%) Heroku
5 5 (5.62%) GitHub
5 5 (5.62%) Power Platform
6 3 (3.37%) Amazon EC2
7 2 (2.25%) Amazon ELB
7 2 (2.25%) Amazon EMR
7 2 (2.25%) Amazon S3
7 2 (2.25%) IaaS
7 2 (2.25%) OpenShift
7 2 (2.25%) PaaS
7 2 (2.25%) SaaS
8 1 (1.12%) Amazon Kinesis
8 1 (1.12%) AWS CloudFormation
8 1 (1.12%) Cloud Computing
8 1 (1.12%) Dynamics 365
8 1 (1.12%) Serverless
8 1 (1.12%) Virtual Private Cloud
Communications & Networking
1 7 (7.87%) Multicast
2 6 (6.74%) HTTP
3 2 (2.25%) Peer-to-Peer Networking
3 2 (2.25%) VPN
4 1 (1.12%) DKIM
4 1 (1.12%) NAS
Database & Business Intelligence
1 24 (26.97%) NoSQL
2 14 (15.73%) Big Data
2 14 (15.73%) Hadoop
3 12 (13.48%) SQL Server
4 10 (11.24%) Data Warehouse
5 7 (7.87%) Azure SQL Database
5 7 (7.87%) Relational Database
6 6 (6.74%) PowerCenter
6 6 (6.74%) SQL Server Integration Services
7 5 (5.62%) Power BI
8 4 (4.49%) Redis
9 3 (3.37%) Apache Cassandra
9 3 (3.37%) Azkaban
9 3 (3.37%) DB2
9 3 (3.37%) MongoDB
9 3 (3.37%) PostgreSQL
9 3 (3.37%) SAP HANA
10 2 (2.25%) Blockchain
10 2 (2.25%) Looker
10 2 (2.25%) SAP BW
Development Applications
1 11 (12.36%) webpack
2 10 (11.24%) JUnit
3 9 (10.11%) Git (software)
3 9 (10.11%) Jenkins
4 8 (8.99%) Maven
5 6 (6.74%) Ant
6 5 (5.62%) git-flow
6 5 (5.62%) Gradle
6 5 (5.62%) JIRA
6 5 (5.62%) JMeter
6 5 (5.62%) Mockito
7 4 (4.49%) TestNG
8 1 (1.12%) ER Studio
8 1 (1.12%) ERwin
8 1 (1.12%) TeamCity
8 1 (1.12%) Visual Studio Team System
General
1 37 (41.57%) Finance
2 9 (10.11%) Banking
3 8 (8.99%) Front Office
4 7 (7.87%) Manufacturing
5 6 (6.74%) Public Sector
6 2 (2.25%) Marketing
6 2 (2.25%) Retail
7 1 (1.12%) Financial Institution
7 1 (1.12%) Investment Banking
Job Titles
1 48 (53.93%) Developer
2 28 (31.46%) Senior Developer
3 20 (22.47%) Digital Developer
4 17 (19.10%) Java Developer
5 16 (17.98%) Data Engineer
6 14 (15.73%) Analyst
7 11 (12.36%) React Developer
7 11 (12.36%) Senior React Developer
8 8 (8.99%) Node.js Developer
9 7 (7.87%) Senior Java Developer
10 5 (5.62%) Azure Engineer
11 4 (4.49%) Business Process Analyst
11 4 (4.49%) Data Analyst
11 4 (4.49%) Process Analyst
12 3 (3.37%) Business Analyst
12 3 (3.37%) Energy Trading Developer
12 3 (3.37%) JavaScript Developer
12 3 (3.37%) Python Developer
13 2 (2.25%) Electronic Trading Developer
13 2 (2.25%) Electronic Trading Java Developer
Libraries, Frameworks & Software Standards
1 17 (19.10%) CSS
2 11 (12.36%) D3.js
2 11 (12.36%) GraphQL
2 11 (12.36%) Jest
2 11 (12.36%) Node.js
2 11 (12.36%) React
2 11 (12.36%) Redux
2 11 (12.36%) RESTful
3 8 (8.99%) FIX Protocol
3 8 (8.99%) REST
4 7 (7.87%) HTML
4 7 (7.87%) HTML5
4 7 (7.87%) Kafka
4 7 (7.87%) Web Services
5 6 (6.74%) Spring
5 6 (6.74%) XML
6 5 (5.62%) J2EE
6 5 (5.62%) JSON
6 5 (5.62%) RxJava
6 5 (5.62%) SOAP
Miscellaneous
1 37 (41.57%) Algorithms
2 29 (32.58%) User Experience
3 28 (31.46%) Analytical Skills
4 8 (8.99%) Equities
5 6 (6.74%) Enterprise Software
6 5 (5.62%) Greenfield Project
6 5 (5.62%) Mobile App
6 5 (5.62%) Mobile Payment
7 1 (1.12%) Clustering
7 1 (1.12%) Fixed Income
7 1 (1.12%) Management Information System
7 1 (1.12%) Public Cloud
7 1 (1.12%) Reinsurance
Operating Systems
1 3 (3.37%) Linux
1 3 (3.37%) Windows
2 2 (2.25%) Unix
3 1 (1.12%) Windows Server
3 1 (1.12%) Windows Server 2008
3 1 (1.12%) Windows Server 2012
Processes & Methodologies
1 47 (52.81%) Agile Software Development
2 42 (47.19%) OO
3 38 (42.70%) Computer Science
4 33 (37.08%) Test Automation
5 29 (32.58%) Problem-Solving
6 24 (26.97%) OOD
7 18 (20.22%) Analytics
8 17 (19.10%) Multithreading
9 15 (16.85%) Data Modelling
9 15 (16.85%) ETL
10 14 (15.73%) Data Visualisation
10 14 (15.73%) Visualisation
11 13 (14.61%) Multithreaded Programming
12 11 (12.36%) API Design
12 11 (12.36%) Business Intelligence
12 11 (12.36%) Data Transformation
12 11 (12.36%) DevOps
12 11 (12.36%) Low Latency
12 11 (12.36%) Open Source
12 11 (12.36%) SDLC
Programming Languages
1 48 (53.93%) SQL
2 36 (40.45%) JavaScript
3 28 (31.46%) Java
4 19 (21.35%) Python
5 15 (16.85%) C++
6 11 (12.36%) ES6
6 11 (12.36%) TypeScript
7 6 (6.74%) Java 8
8 5 (5.62%) Kotlin
9 4 (4.49%) R
9 4 (4.49%) Scala
10 3 (3.37%) AWK
10 3 (3.37%) sed
11 2 (2.25%) C#
11 2 (2.25%) Go
11 2 (2.25%) MATLAB
11 2 (2.25%) PHP
12 1 (1.12%) PowerShell
12 1 (1.12%) VBA
12 1 (1.12%) X++
Qualifications
1 18 (20.22%) Degree
2 9 (10.11%) Computer Science Degree
3 2 (2.25%) Master's Degree
4 1 (1.12%) BPSS Clearance
4 1 (1.12%) ISEB
4 1 (1.12%) ISEB Practitioner
Quality Assurance & Compliance
1 5 (5.62%) QA
2 4 (4.49%) Data Quality
3 1 (1.12%) GDPR
3 1 (1.12%) MiFID
System Software
1 15 (16.85%) Docker
2 1 (1.12%) Active Directory
2 1 (1.12%) DFS Replication
2 1 (1.12%) HDFS
Systems Management
1 12 (13.48%) Terraform
2 11 (12.36%) Kubernetes
3 3 (3.37%) Ansible
3 3 (3.37%) Puppet
4 2 (2.25%) Kibana
5 1 (1.12%) Galera Cluster
5 1 (1.12%) Opscode Chef
Vendors
1 7 (7.87%) Informatica
1 7 (7.87%) Microsoft
1 7 (7.87%) Solace
1 7 (7.87%) Talend
2 6 (6.74%) Ab Initio
2 6 (6.74%) Oracle
2 6 (6.74%) SAP
3 4 (4.49%) Teradata
4 3 (3.37%) Google
4 3 (3.37%) Netezza
4 3 (3.37%) Sybase
5 2 (2.25%) Tableau
6 1 (1.12%) Lotus
6 1 (1.12%) Splunk
6 1 (1.12%) TIBCO
6 1 (1.12%) Varonis
6 1 (1.12%) Veracode