Period
to 17 August 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 17 August 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
17 Aug 2019
Same period 2018 Same period 2017
Rank 242 256 252
Rank change year-on-year +14 -4 +80
Contract jobs citing Data Structures 437 472 446
As % of all contract IT jobs advertised in London 1.09% 1.03% 1.04%
As % of the Miscellaneous category 3.10% 2.84% 2.83%
Number of daily rates quoted 330 295 312
London median daily rate £540 £550 £500
Median daily rate % change year-on-year -1.82% +10.00% +5.26%
10th Percentile £375 £408 £363
90th Percentile £713 £695 £675
England median daily rate £525 £500 £470
% change year-on-year +5.00% +6.38% +7.43%
Number of hourly rates quoted 3 3 0
London median hourly rate £47.50 £20.00 -
Median hourly rate % change year-on-year +137.50% - -
England median hourly rate £50.00 £32.75 £35.00
% change year-on-year +52.67% -6.43% -

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 14,115 16,596 15,786
As % of all contract IT jobs advertised in London 35.28% 36.17% 36.94%
Number of daily rates quoted 9,929 11,759 11,115
London median daily rate £525 £513 £500
Median daily rate % change year-on-year +2.44% +2.50% +5.26%
10th Percentile £325 £313 £313
90th Percentile £700 £700 £675
England median daily rate £475 £475 £450
% change year-on-year - +5.56% +5.88%
Number of hourly rates quoted 215 257 216
London median hourly rate £22.93 £23.50 £21.95
Median hourly rate % change year-on-year -2.43% +7.06% +9.75%
10th Percentile £13.35 £13.31 £12.88
90th Percentile £53.75 £52.25 £50.00
England median hourly rate £21.50 £21.33 £20.00
% change year-on-year +0.82% +6.63% -

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 17 August 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
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing Data Structures in London over the 6 months to 17 August 2019.

Contractor hourly rate histogram 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 17 August 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 +8 100 £575 +15.00% 54
West London +40 37 £513 -6.82% 28
South London +30 6 £375 -25.00% 5
East London +9 3 £279 -53.93% 14
North London -1 2 £350 - 2
Data Structures
England

For the 6 months to 17 August 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.

1 187 (42.79%) Agile Software Development
2 173 (39.59%) Algorithms
3 172 (39.36%) Java
4 144 (32.95%) SQL
5 141 (32.27%) Finance
6 130 (29.75%) Python
7 106 (24.26%) JavaScript
8 105 (24.03%) Data Modelling
9 104 (23.80%) OO
10 98 (22.43%) Amazon AWS
11 94 (21.51%) TDD
12 93 (21.28%) Linux
13 87 (19.91%) Computer Science
14 81 (18.54%) REST
15 79 (18.08%) Microservices
16 77 (17.62%) Big Data
17 74 (16.93%) Degree
18 66 (15.10%) NoSQL
19 65 (14.87%) ETL
20 63 (14.42%) Apache Spark
21 62 (14.19%) Docker
21 62 (14.19%) SQL Server
21 62 (14.19%) Banking
22 61 (13.96%) Oracle
22 61 (13.96%) Kafka
22 61 (13.96%) DevOps
23 60 (13.73%) Analytical Skills
23 60 (13.73%) Scala
24 59 (13.50%) Analytics
24 59 (13.50%) Problem-Solving

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 63 (14.42%) Apache Spark
2 23 (5.26%) Apache
3 10 (2.29%) CMS
4 9 (2.06%) Magnolia
5 6 (1.37%) IPython
6 5 (1.14%) Confluence
7 4 (0.92%) Apache Airflow
7 4 (0.92%) Elasticsearch
7 4 (0.92%) IBM HTTP Server
7 4 (0.92%) Jupyter
8 3 (0.69%) Luigi
8 3 (0.69%) SharePoint
9 2 (0.46%) Apache Solr
9 2 (0.46%) IIS
9 2 (0.46%) Oracle SOA Suite
9 2 (0.46%) SharePoint 2010
9 2 (0.46%) Tomcat
10 1 (0.23%) Drupal
10 1 (0.23%) MQSeries
10 1 (0.23%) WebSphere
Applications
1 23 (5.26%) Microsoft Excel
2 6 (1.37%) Microsoft Office
3 3 (0.69%) Spreadsheet
4 2 (0.46%) Adobe Illustrator
4 2 (0.46%) InfoPath
4 2 (0.46%) InVision
4 2 (0.46%) Sketch
4 2 (0.46%) Zeplin
5 1 (0.23%) Microsoft PowerPoint
5 1 (0.23%) MS Visio
Business Applications
1 10 (2.29%) SAP S/4HANA
2 8 (1.83%) SAP ERP
2 8 (1.83%) SAP EWM
2 8 (1.83%) SAP WM
3 6 (1.37%) SAP BPC
4 5 (1.14%) Oracle Financials
5 4 (0.92%) Dynamics NAV
6 3 (0.69%) SAP FI
7 2 (0.46%) Oracle Assets
7 2 (0.46%) Oracle Cash Management
7 2 (0.46%) Oracle FAH
7 2 (0.46%) Oracle General Ledger
7 2 (0.46%) Oracle Internet Expenses
7 2 (0.46%) Oracle iProcurement
7 2 (0.46%) Oracle Payables
7 2 (0.46%) Oracle Receivables
7 2 (0.46%) Oracle Subledger Accounting
7 2 (0.46%) SAP Retail
7 2 (0.46%) Teamcenter
8 1 (0.23%) SAP Hybris
Cloud Services
1 98 (22.43%) Amazon AWS
2 50 (11.44%) Microsoft Azure
3 44 (10.07%) Google Cloud Platform
4 32 (7.32%) Amazon S3
5 23 (5.26%) Amazon EC2
5 23 (5.26%) Amazon SQS
6 21 (4.81%) Power Platform
7 20 (4.58%) AWS CloudFormation
8 17 (3.89%) Amazon CloudWatch
8 17 (3.89%) Virtual Private Cloud
9 16 (3.66%) Amazon Glacier
9 16 (3.66%) AWS CloudTrail
10 14 (3.20%) Amazon SageMaker
11 11 (2.52%) Amazon EMR
12 7 (1.60%) Cloud Computing
12 7 (1.60%) GitHub
12 7 (1.60%) PaaS
13 5 (1.14%) Amazon ECS
13 5 (1.14%) Dynamics 365
14 4 (0.92%) npm
Communications & Networking
1 8 (1.83%) RFID
2 2 (0.46%) HTTP
3 1 (0.23%) BIG-IP
3 1 (0.23%) Firewall
3 1 (0.23%) Internet
3 1 (0.23%) Intranet
3 1 (0.23%) NetScaler
3 1 (0.23%) Skype
3 1 (0.23%) SSH
3 1 (0.23%) TCP/IP
Database & Business Intelligence
1 77 (17.62%) Big Data
2 66 (15.10%) NoSQL
3 62 (14.19%) SQL Server
4 52 (11.90%) Relational Database
5 51 (11.67%) Hadoop
6 37 (8.47%) Data Warehouse
7 33 (7.55%) MongoDB
8 29 (6.64%) MySQL
9 28 (6.41%) Apache Cassandra
10 25 (5.72%) Apache Hive
11 22 (5.03%) PostgreSQL
12 21 (4.81%) Amazon RDS
12 21 (4.81%) Power BI
13 16 (3.66%) Amazon Redshift
14 14 (3.20%) Data Lake
15 12 (2.75%) SQL Server Integration Services
16 10 (2.29%) SQL Server Reporting Services
17 8 (1.83%) Microsoft Analysis Services
17 8 (1.83%) Redis
17 8 (1.83%) SQL Server Analysis Services
Development Applications
1 58 (13.27%) Git (software)
2 48 (10.98%) Jenkins
3 21 (4.81%) JUnit
4 12 (2.75%) JIRA
5 11 (2.52%) Maven
6 6 (1.37%) Subversion
6 6 (1.37%) webpack
7 5 (1.14%) CircleCI
7 5 (1.14%) Gradle
7 5 (1.14%) Sonatype Nexus
7 5 (1.14%) TeamCity
8 4 (0.92%) Artifactory
8 4 (0.92%) Bitbucket
8 4 (0.92%) Gerrit
8 4 (0.92%) SQL Server Management Studio (SSMS)
9 3 (0.69%) Eclipse
9 3 (0.69%) ERwin
9 3 (0.69%) GitLab
9 3 (0.69%) PostCSS
9 3 (0.69%) TestNG
General
1 141 (32.27%) Finance
2 62 (14.19%) Banking
3 37 (8.47%) Front Office
4 20 (4.58%) Investment Banking
5 16 (3.66%) Financial Institution
6 14 (3.20%) Retail
7 13 (2.97%) Manufacturing
8 11 (2.52%) Pharmaceutical
9 8 (1.83%) Games
10 7 (1.60%) Telecoms
11 6 (1.37%) Electronics
11 6 (1.37%) Marketing
12 3 (0.69%) Legal
13 2 (0.46%) General Ledger
13 2 (0.46%) International Banking
13 2 (0.46%) Law
14 1 (0.23%) Advertising
14 1 (0.23%) Billing
14 1 (0.23%) Danish Language
14 1 (0.23%) Spanish Language
Job Titles
1 228 (52.17%) Developer
2 109 (24.94%) Java Developer
3 58 (13.27%) Data Engineer
4 56 (12.81%) Analyst
5 34 (7.78%) Senior Developer
6 27 (6.18%) JavaScript Developer
6 27 (6.18%) Senior Java Developer
7 25 (5.72%) Data Analyst
8 22 (5.03%) Architect
9 21 (4.81%) Python Engineer
10 20 (4.58%) Python Developer
11 19 (4.35%) Consultant
12 17 (3.89%) Business Analyst
12 17 (3.89%) Hybris Developer
13 16 (3.66%) C# Developer
13 16 (3.66%) Full Stack Developer
14 14 (3.20%) .NET Developer
14 14 (3.20%) Investment Banking Java Developer
15 13 (2.97%) SAP Consultant
16 12 (2.75%) Data Architect
Libraries, Frameworks & Software Standards
1 81 (18.54%) REST
2 61 (13.96%) Kafka
3 57 (13.04%) HTML
4 47 (10.76%) Spring
5 46 (10.53%) CSS
6 44 (10.07%) Node.js
7 39 (8.92%) HTML5
7 39 (8.92%) SOAP
7 39 (8.92%) Web Services
8 37 (8.47%) JSON
8 37 (8.47%) React
9 32 (7.32%) XML
10 26 (5.95%) RESTful
11 25 (5.72%) .NET
12 24 (5.49%) AngularJS
13 23 (5.26%) Spring Boot
14 17 (3.89%) Apache NiFi
15 16 (3.66%) JMS
15 16 (3.66%) Vue.js
16 15 (3.43%) OAuth
Miscellaneous
1 173 (39.59%) Algorithms
2 60 (13.73%) Analytical Skills
3 29 (6.64%) Equities
4 26 (5.95%) User Experience
5 15 (3.43%) Greenfield Project
5 15 (3.43%) Hedge funds
6 14 (3.20%) Self-Motivation
7 12 (2.75%) Foreign Exchange (FX)
7 12 (2.75%) Linux Command Line
8 11 (2.52%) Derivative
9 9 (2.06%) Management Information System
9 9 (2.06%) Public Cloud
10 8 (1.83%) Client/Server
10 8 (1.83%) Data Protection Act
10 8 (1.83%) Fixed Income
10 8 (1.83%) Life Science
10 8 (1.83%) Video on Demand
11 7 (1.60%) Video\Live Streaming
12 6 (1.37%) Cloud Native
12 6 (1.37%) Credit Risk
Operating Systems
1 93 (21.28%) Linux
2 30 (6.86%) Unix
3 17 (3.89%) Windows
4 3 (0.69%) Android
4 3 (0.69%) Apple iOS
5 2 (0.46%) Red Hat Enterprise Linux
5 2 (0.46%) Windows Server
Processes & Methodologies
1 187 (42.79%) Agile Software Development
2 105 (24.03%) Data Modelling
3 104 (23.80%) OO
4 94 (21.51%) TDD
5 87 (19.91%) Computer Science
6 79 (18.08%) Microservices
7 65 (14.87%) ETL
8 61 (13.96%) DevOps
9 59 (13.50%) Analytics
9 59 (13.50%) Problem-Solving
10 57 (13.04%) Continuous Integration
10 57 (13.04%) Data Science
11 50 (11.44%) Migration
12 49 (11.21%) Software Engineering
13 48 (10.98%) Scrum
14 46 (10.53%) Test Automation
15 45 (10.30%) Business Intelligence
15 45 (10.30%) Machine Learning
16 40 (9.15%) Kanban
17 39 (8.92%) Data Analysis
Programming Languages
1 172 (39.36%) Java
2 144 (32.95%) SQL
3 130 (29.75%) Python
4 106 (24.26%) JavaScript
5 60 (13.73%) Scala
6 55 (12.59%) Java 8
7 41 (9.38%) TypeScript
8 35 (8.01%) C++
9 30 (6.86%) C#
10 27 (6.18%) Bash Shell
11 22 (5.03%) Go
12 16 (3.66%) ES6
13 15 (3.43%) Clojure
14 12 (2.75%) Groovy
14 12 (2.75%) R
15 9 (2.06%) C
16 8 (1.83%) Kotlin
16 8 (1.83%) T-SQL
17 7 (1.60%) Perl
17 7 (1.60%) PHP
Qualifications
1 74 (16.93%) Degree
2 36 (8.24%) Computer Science Degree
3 25 (5.72%) Security Cleared
4 21 (4.81%) SC Cleared
5 11 (2.52%) CTC Cleared
6 6 (1.37%) Master's Degree
7 5 (1.14%) ACCA
7 5 (1.14%) PhD
8 1 (0.23%) BC Cleared
8 1 (0.23%) CBAP
8 1 (0.23%) DV Cleared
Quality Assurance & Compliance
1 40 (9.15%) QA
2 33 (7.55%) Data Quality
3 5 (1.14%) GDPR
4 4 (0.92%) SEPA
5 2 (0.46%) IFRS
6 1 (0.23%) EMIR
6 1 (0.23%) GAAP
6 1 (0.23%) MiFID
System Software
1 62 (14.19%) Docker
2 5 (1.14%) HDFS
3 3 (0.69%) Apache Flume
4 2 (0.46%) Oracle RAC
5 1 (0.23%) KVM
5 1 (0.23%) LXC
5 1 (0.23%) VirtualBox
Systems Management
1 53 (12.13%) Kubernetes
2 29 (6.64%) Ansible
3 12 (2.75%) Terraform
4 4 (0.92%) Control-M
4 4 (0.92%) Hadoop YARN
5 2 (0.46%) Grafana
6 1 (0.23%) Opscode Chef
6 1 (0.23%) Packer
6 1 (0.23%) Prometheus
6 1 (0.23%) Puppet
6 1 (0.23%) Single Sign-On
Vendors
1 61 (13.96%) Oracle
2 37 (8.47%) Microsoft
3 28 (6.41%) SAP
4 26 (5.95%) Google
5 18 (4.12%) hybris
6 13 (2.97%) Salesforce.com
7 9 (2.06%) Informatica
7 9 (2.06%) Tableau
8 7 (1.60%) MuleSoft
9 5 (1.14%) Teradata
10 4 (0.92%) BMC
10 4 (0.92%) Cadence
10 4 (0.92%) Cloudera
10 4 (0.92%) Hortonworks
10 4 (0.92%) LabWare
10 4 (0.92%) OutSystems
10 4 (0.92%) Talend
11 2 (0.46%) Databricks
11 2 (0.46%) ServiceNow
11 2 (0.46%) Xceptor