Period
to 21 November 2019

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 21 November 2019 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
21 Nov 2019
Same period 2018 Same period 2017
Rank 251 250 227
Rank change year-on-year -1 -23 +106
Contract jobs citing Data Structures 352 485 571
As % of all contract IT jobs advertised in London 0.99% 1.04% 1.21%
As % of the Miscellaneous category 2.95% 2.90% 3.22%
Number of daily rates quoted 243 325 418
London median daily rate £550 £550 £525
Median daily rate % change year-on-year - +4.76% +9.03%
10th Percentile £350 £413 £388
90th Percentile £725 £750 £708
England median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 0 6 2
London median hourly rate - £37.09 £41.50
Median hourly rate % change year-on-year - -10.63% +27.69%
England median hourly rate £42.50 £39.50 £35.00
% change year-on-year +7.59% +12.86% +2.94%

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 11,916 16,702 17,750
As % of all contract IT jobs advertised in London 33.45% 35.96% 37.70%
Number of daily rates quoted 8,301 11,911 12,587
London median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +5.26%
10th Percentile £306 £313 £311
90th Percentile £700 £700 £688
England median daily rate £475 £475 £450
% change year-on-year - +5.56% +5.88%
Number of hourly rates quoted 173 275 231
London median hourly rate £23.00 £22.93 £21.90
Median hourly rate % change year-on-year +0.31% +4.70% +9.72%
10th Percentile £12.76 £13.00 £12.75
90th Percentile £52.90 £53.75 £47.83
England median hourly rate £22.50 £20.00 £20.00
% change year-on-year +12.50% - -

Data Structures
Job Vacancy Trend in London

Job postings citing Data Structures as a percentage of all IT jobs advertised in London.

Job vacancy trend for Data Structures in London

Data Structures
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Data Structures in London

Data Structures
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Data Structures in London over the 6 months to 21 November 2019.

Contractor daily rate histogram for Data Structures in London

Data Structures
Contractor Hourly Rate Trend in London

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

Contractor 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 21 November 2019. 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 +4 91 £550 +4.76% 65
West London +47 32 £513 -6.82% 24
South London +36 6 £325 -18.75% 1
East London +24 4 £414 -27.96% 13
North London +4 2 £350 -44.00% 4
Data Structures
England

For the 6 months to 21 November 2019, 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.

1 144 (40.91%) Agile Software Development
2 141 (40.06%) Java
3 128 (36.36%) Algorithms
4 125 (35.51%) SQL
5 120 (34.09%) Finance
6 109 (30.97%) OO
7 89 (25.28%) Python
8 82 (23.30%) JavaScript
9 75 (21.31%) Analytical Skills
10 71 (20.17%) Computer Science
11 68 (19.32%) Analytics
12 67 (19.03%) TDD
13 65 (18.47%) AWS
13 65 (18.47%) Problem-Solving
14 61 (17.33%) Big Data
14 61 (17.33%) Banking
15 59 (16.76%) NoSQL
16 56 (15.91%) Test Automation
16 56 (15.91%) Degree
17 54 (15.34%) Multithreading
18 53 (15.06%) Apache Spark
19 51 (14.49%) DevOps
19 51 (14.49%) Linux
20 50 (14.20%) Business Intelligence
21 48 (13.64%) Data Modelling
21 48 (13.64%) Azure
22 47 (13.35%) ETL
22 47 (13.35%) Data Science
23 44 (12.50%) Front Office
23 44 (12.50%) Hadoop

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 53 (15.06%) Apache Spark
2 9 (2.56%) Apache Airflow
3 8 (2.27%) Apache
3 8 (2.27%) Cloud Foundry
3 8 (2.27%) Confluence
4 7 (1.99%) Luigi
5 6 (1.70%) CMS
6 5 (1.42%) Elasticsearch
6 5 (1.42%) Jupyter
6 5 (1.42%) Magnolia
7 3 (0.85%) Camunda
7 3 (0.85%) SharePoint
8 2 (0.57%) BizTalk Server
8 2 (0.57%) Ethereum
8 2 (0.57%) Hyperledger
8 2 (0.57%) OpenStack
8 2 (0.57%) SharePoint 2010
8 2 (0.57%) Tomcat
8 2 (0.57%) WebLogic
8 2 (0.57%) WebSphere
Applications
1 15 (4.26%) Microsoft Excel
2 2 (0.57%) Adobe Illustrator
2 2 (0.57%) InfoPath
2 2 (0.57%) InVision
2 2 (0.57%) Microsoft Office
2 2 (0.57%) Sketch
2 2 (0.57%) Spreadsheet
2 2 (0.57%) Zeplin
Business Applications
1 9 (2.56%) SAP ERP
2 8 (2.27%) SAP EWM
2 8 (2.27%) SAP WM
3 3 (0.85%) Dynamics NAV
3 3 (0.85%) FINCAD Analytics
4 2 (0.57%) Distributed Ledger
4 2 (0.57%) Dynamics AX
4 2 (0.57%) Maximo
4 2 (0.57%) Oracle Assets
4 2 (0.57%) Oracle Cash Management
4 2 (0.57%) Oracle FAH
4 2 (0.57%) Oracle General Ledger
4 2 (0.57%) Oracle Internet Expenses
4 2 (0.57%) Oracle iProcurement
4 2 (0.57%) Oracle Payables
4 2 (0.57%) Oracle Receivables
4 2 (0.57%) Oracle Subledger Accounting
4 2 (0.57%) R3 Corda
4 2 (0.57%) SAP HR
5 1 (0.28%) PeopleSoft CRM
Cloud Services
1 65 (18.47%) AWS
2 48 (13.64%) Azure
3 30 (8.52%) GCP
4 26 (7.39%) Power Platform
5 16 (4.55%) Amazon S3
6 11 (3.13%) Serverless
7 10 (2.84%) AWS Lambda
8 9 (2.56%) Amazon EC2
8 9 (2.56%) Amazon EMR
9 8 (2.27%) Amazon SQS
9 8 (2.27%) Heroku
10 7 (1.99%) Cloud Computing
11 6 (1.70%) AWS CloudFormation
12 5 (1.42%) Amazon ECS
13 4 (1.14%) Dynamics 365
13 4 (1.14%) PaaS
14 3 (0.85%) Amazon Kinesis
14 3 (0.85%) Amazon SageMaker
14 3 (0.85%) npm
14 3 (0.85%) SaaS
Communications & Networking
1 13 (3.69%) Multicast
2 9 (2.56%) RFID
3 3 (0.85%) HTTP
4 2 (0.57%) Peer-to-Peer Networking
4 2 (0.57%) VPN
5 1 (0.28%) Skype
5 1 (0.28%) SSH
Database & Business Intelligence
1 61 (17.33%) Big Data
2 59 (16.76%) NoSQL
3 44 (12.50%) Hadoop
4 39 (11.08%) SQL Server
5 37 (10.51%) Data Warehouse
6 26 (7.39%) Power BI
7 23 (6.53%) Amazon Redshift
8 22 (6.25%) MongoDB
9 19 (5.40%) Relational Database
10 17 (4.83%) PostgreSQL
11 16 (4.55%) Apache Cassandra
12 15 (4.26%) SQL Server Integration Services
13 13 (3.69%) Data Lake
14 12 (3.41%) Apache Hive
14 12 (3.41%) MySQL
15 11 (3.13%) Snowflake Schema
16 9 (2.56%) Amazon Athena
16 9 (2.56%) Redis
16 9 (2.56%) SQL Server Reporting Services
17 8 (2.27%) Amazon Aurora
Development Applications
1 30 (8.52%) Git (software)
2 29 (8.24%) Jenkins
3 23 (6.53%) JUnit
4 19 (5.40%) Maven
5 17 (4.83%) JIRA
6 7 (1.99%) TestNG
6 7 (1.99%) webpack
7 6 (1.70%) CircleCI
8 5 (1.42%) Gradle
9 4 (1.14%) Sonatype Nexus
9 4 (1.14%) Subversion
9 4 (1.14%) TeamCity
10 3 (0.85%) Artifactory
10 3 (0.85%) ER Studio
10 3 (0.85%) ERwin
11 2 (0.57%) Atlassian Bamboo
11 2 (0.57%) Axure RP
11 2 (0.57%) Hudson
11 2 (0.57%) Mockito
11 2 (0.57%) Visual Studio Team System
General
1 120 (34.09%) Finance
2 61 (17.33%) Banking
3 44 (12.50%) Front Office
4 25 (7.10%) Investment Banking
5 19 (5.40%) Pharmaceutical
6 14 (3.98%) Manufacturing
7 9 (2.56%) Public Sector
8 8 (2.27%) Retail
9 6 (1.70%) Games
10 4 (1.14%) Financial Institution
10 4 (1.14%) Marketing
11 3 (0.85%) Legal
11 3 (0.85%) Telecoms
12 2 (0.57%) General Ledger
12 2 (0.57%) International Banking
12 2 (0.57%) Law
13 1 (0.28%) Advertising
13 1 (0.28%) Billing
13 1 (0.28%) Electronics
13 1 (0.28%) Local Government
Job Titles
1 173 (49.15%) Developer
2 85 (24.15%) Java Developer
3 60 (17.05%) Senior Developer
4 51 (14.49%) Data Engineer
5 46 (13.07%) Analyst
6 39 (11.08%) Senior Java Developer
7 24 (6.82%) JavaScript Developer
8 22 (6.25%) Data Analyst
9 17 (4.83%) Architect
9 17 (4.83%) Investment Banking Java Developer
10 16 (4.55%) Python Developer
11 14 (3.98%) Consultant
11 14 (3.98%) Data Architect
11 14 (3.98%) Digital Developer
11 14 (3.98%) React Developer
12 12 (3.41%) Data Manager
12 12 (3.41%) Software Engineer
13 11 (3.13%) Senior React Developer
14 10 (2.84%) Electronic Trading Developer
14 10 (2.84%) Senior Data Engineer
Libraries, Frameworks & Software Standards
1 38 (10.80%) Kafka
2 34 (9.66%) REST
3 31 (8.81%) Node.js
3 31 (8.81%) Spring
4 25 (7.10%) CSS
4 25 (7.10%) HTML
5 24 (6.82%) Web Services
6 20 (5.68%) React
6 20 (5.68%) Spring Boot
6 20 (5.68%) XML
7 17 (4.83%) FIX Protocol
7 17 (4.83%) HTML5
8 16 (4.55%) Redux
9 15 (4.26%) D3.js
9 15 (4.26%) NumPy
10 12 (3.41%) AngularJS
11 11 (3.13%) JSON
11 11 (3.13%) RESTful
12 10 (2.84%) .NET
12 10 (2.84%) SOAP
Miscellaneous
1 128 (36.36%) Algorithms
2 75 (21.31%) Analytical Skills
3 40 (11.36%) Equities
4 36 (10.23%) User Experience
5 18 (5.11%) Derivative
6 16 (4.55%) Greenfield Project
7 13 (3.69%) Fixed Income
8 12 (3.41%) Foreign Exchange (FX)
8 12 (3.41%) Self-Motivation
9 11 (3.13%) Linux Command Line
10 10 (2.84%) LIMS
11 9 (2.56%) Life Science
11 9 (2.56%) Video on Demand
11 9 (2.56%) Video\Live Streaming
12 8 (2.27%) Grid Computing
12 8 (2.27%) Management Information System
13 7 (1.99%) Cloud Native
13 7 (1.99%) Hedge funds
13 7 (1.99%) Public Cloud
14 5 (1.42%) Market Risk
Operating Systems
1 51 (14.49%) Linux
2 31 (8.81%) Unix
3 10 (2.84%) Windows
4 6 (1.70%) Apple iOS
5 5 (1.42%) Android
6 1 (0.28%) Red Hat Enterprise Linux
6 1 (0.28%) Windows Server
6 1 (0.28%) Windows Server 2008
6 1 (0.28%) Windows Server 2012
Processes & Methodologies
1 144 (40.91%) Agile Software Development
2 109 (30.97%) OO
3 71 (20.17%) Computer Science
4 68 (19.32%) Analytics
5 67 (19.03%) TDD
6 65 (18.47%) Problem-Solving
7 56 (15.91%) Test Automation
8 54 (15.34%) Multithreading
9 51 (14.49%) DevOps
10 50 (14.20%) Business Intelligence
11 48 (13.64%) Data Modelling
12 47 (13.35%) Data Science
12 47 (13.35%) ETL
13 40 (11.36%) Continuous Integration
14 39 (11.08%) Software Engineering
15 34 (9.66%) Microservices
16 33 (9.38%) Machine Learning
17 32 (9.09%) Scrum
18 29 (8.24%) Low Latency
19 27 (7.67%) Visualisation
Programming Languages
1 141 (40.06%) Java
2 125 (35.51%) SQL
3 89 (25.28%) Python
4 82 (23.30%) JavaScript
5 38 (10.80%) C++
6 35 (9.94%) Java 8
6 35 (9.94%) Scala
7 22 (6.25%) TypeScript
8 21 (5.97%) C#
9 18 (5.11%) Kotlin
10 14 (3.98%) Go
11 11 (3.13%) ES6
11 11 (3.13%) R
12 8 (2.27%) Haskell
13 7 (1.99%) C
13 7 (1.99%) Clojure
13 7 (1.99%) VBA
14 6 (1.70%) Apple Swift
15 5 (1.42%) AWK
15 5 (1.42%) Groovy
Qualifications
1 56 (15.91%) Degree
2 22 (6.25%) Computer Science Degree
3 7 (1.99%) PhD
4 5 (1.42%) Master's Degree
5 2 (0.57%) ISEB
5 2 (0.57%) ISEB Practitioner
5 2 (0.57%) SC Cleared
5 2 (0.57%) Security Cleared
6 1 (0.28%) BPSS Clearance
6 1 (0.28%) Numerate Degree
Quality Assurance & Compliance
1 10 (2.84%) Data Quality
1 10 (2.84%) QA
2 3 (0.85%) GDPR
3 1 (0.28%) EMIR
3 1 (0.28%) MiFID
System Software
1 44 (12.50%) Docker
2 1 (0.28%) HDFS
2 1 (0.28%) Oracle RAC
2 1 (0.28%) VirtualBox
Systems Management
1 25 (7.10%) Kubernetes
2 22 (6.25%) Terraform
3 9 (2.56%) Ansible
4 2 (0.57%) Grafana
4 2 (0.57%) Kibana
4 2 (0.57%) Packer
4 2 (0.57%) Puppet
4 2 (0.57%) Single Sign-On
5 1 (0.28%) Prometheus
Vendors
1 41 (11.65%) Oracle
2 31 (8.81%) Microsoft
3 22 (6.25%) SAP
4 18 (5.11%) Google
5 13 (3.69%) Solace
6 12 (3.41%) LabWare
6 12 (3.41%) Talend
7 9 (2.56%) Informatica
8 7 (1.99%) hybris
9 6 (1.70%) Ab Initio
9 6 (1.70%) Tableau
9 6 (1.70%) Teradata
10 5 (1.42%) Databricks
11 4 (1.14%) Charles River
11 4 (1.14%) ServiceNow
12 3 (0.85%) Bloomberg
13 2 (0.57%) Adobe
13 2 (0.57%) Fiserv
13 2 (0.57%) Netezza
13 2 (0.57%) Salesforce.com