Period
to 17 October 2021

The table below looks at the prevalence of the term Data Structures in contract job vacancies advertised in England. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 17 October 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
UK > England
6 months to
17 Oct 2021
Same period 2020 Same period 2019
Rank 265 273 349
Rank change year-on-year +8 +76 +13
Contract jobs citing Data Structures 695 234 580
As % of all contract jobs advertised in England 1.04% 0.88% 0.75%
As % of the Miscellaneous category 3.40% 2.73% 2.57%
Number of daily rates quoted 466 164 384
10th Percentile £402 £325 £350
25th Percentile £475 £409 £416
Median daily rate (50th Percentile) £575 £513 £525
Median % change year-on-year +12.20% -2.38% +5.00%
75th Percentile £675 £631 £638
90th Percentile £811 £696 £713
UK median daily rate £575 £500 £525
% change year-on-year +15.00% -4.76% +5.00%
Number of hourly rates quoted 10 3 10
10th Percentile £18.59 £27.35 £28.32
25th Percentile £24.75 £37.25 £41.88
Median hourly rate £26.00 £57.50 £47.50
Median % change year-on-year -54.78% +21.05% +16.29%
75th Percentile £27.52 £61.64 £67.81
90th Percentile £33.75 £61.87 £72.63
UK median hourly rate £26.14 £57.50 £47.50
% change year-on-year -54.55% +21.05% +16.29%

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 England with a requirement for generic IT skills.

All Generic IT Skills
England
Contract vacancies with a requirement for generic IT skills 20,418 8,571 22,540
As % of all contract IT jobs advertised in England 30.67% 32.27% 28.99%
Number of daily rates quoted 14,424 5,912 14,980
10th Percentile £300 £275 £275
25th Percentile £413 £375 £375
Median daily rate (50th Percentile) £525 £500 £475
Median % change year-on-year +5.00% +5.26% -
75th Percentile £638 £619 £588
90th Percentile £725 £725 £675
UK median daily rate £525 £486 £475
% change year-on-year +8.02% +2.32% -
Number of hourly rates quoted 623 259 773
10th Percentile £12.00 £12.20 £11.27
25th Percentile £15.04 £16.59 £14.28
Median hourly rate £24.08 £30.85 £20.50
Median % change year-on-year -21.94% +50.49% -
75th Percentile £48.75 £46.00 £47.50
90th Percentile £64.04 £61.25 £53.75
UK median hourly rate £25.00 £26.96 £20.50
% change year-on-year -7.27% +31.51% +2.50%

Data Structures
Job Vacancy Trend in England

Job postings citing Data Structures as a proportion of all IT jobs advertised in England.

Job vacancy trend for Data Structures in England

Data Structures
Contractor Daily Rate Trend in England

3-month moving average daily rate quoted in jobs citing Data Structures in England.

Daily rate trend for Data Structures in England

Data Structures
Daily Rate Histogram in England

Daily rate distribution for jobs citing Data Structures in England over the 6 months to 17 October 2021.

Daily rate histogram for Data Structures in England

Data Structures
Contractor Hourly Rate Trend in England

3-month moving average hourly rates quoted in jobs citing Data Structures in England.

Hourly rate trend for Data Structures in England

Data Structures
Hourly Rate Histogram in England

Hourly rate distribution of jobs citing Data Structures in England over the 6 months to 17 October 2021.

Hourly rate histogram for Data Structures in England

Data Structures
Contract Job Locations in England

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 England region over the 6 months to 17 October 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 +40 529 £600 +9.09% 173
South East -65 53 £465 +3.33% 14
South West -29 25 £490 -6.67% 13
Midlands -67 18 £508 +61.11% 28
North of England -93 18 £450 -5.36% 17
East of England -45 17 £550 -6.38% 8
West Midlands -56 14 £508 -5.58% 17
North West -63 12 £450 -21.74% 9
Yorkshire -55 4 £400 -4.19% 6
East Midlands -41 3 £475 +50.79% 11
North East -10 2 - - 2
Data Structures
UK

For the 6 months to 17 October 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 England region with a requirement for Data Structures.

1 283 (40.72%) Agile Software Development
2 266 (38.27%) SQL
3 248 (35.68%) Java
4 202 (29.06%) Algorithms
5 180 (25.90%) Finance
6 162 (23.31%) Python
7 144 (20.72%) Azure
8 140 (20.14%) Analytical Skills
8 140 (20.14%) Social Skills
9 139 (20.00%) Analytics
10 125 (17.99%) Banking
11 120 (17.27%) DevOps
12 118 (16.98%) Multithreading
13 116 (16.69%) AWS
14 102 (14.68%) Performance Tuning
15 99 (14.24%) Linux
16 96 (13.81%) JavaScript
17 95 (13.67%) Oracle
17 95 (13.67%) Problem-Solving
18 94 (13.53%) OO
19 93 (13.38%) Git (software)
20 92 (13.24%) Scala
21 91 (13.09%) Foreign Exchange (FX)
22 88 (12.66%) Investment Banking
22 88 (12.66%) Software Engineering
23 87 (12.52%) Data Modelling
23 87 (12.52%) C#
24 86 (12.37%) Scrum
25 85 (12.23%) Computer Science
26 84 (12.09%) Docker

Data Structures
Co-occurring IT Skills in England 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 57 (8.20%) Apache Spark
2 30 (4.32%) Elasticsearch
3 22 (3.17%) Apache Airflow
4 19 (2.73%) Luigi
5 17 (2.45%) Apache
5 17 (2.45%) Tomcat
6 12 (1.73%) Confluence
7 11 (1.58%) CMS
7 11 (1.58%) GemFire
8 7 (1.01%) EPiServer
8 7 (1.01%) SAS
8 7 (1.01%) SharePoint
9 6 (0.86%) JBoss
10 5 (0.72%) Apache Qpid
10 5 (0.72%) BizTalk Server
10 5 (0.72%) OpenStack
10 5 (0.72%) Oracle Workflow
11 4 (0.58%) IIS
11 4 (0.58%) nginx
12 2 (0.29%) Oracle Coherence
Applications
1 15 (2.16%) Microsoft Excel
2 7 (1.01%) Photoshop
3 2 (0.29%) Microsoft PowerPoint
4 1 (0.14%) Chatbot
4 1 (0.14%) Microsoft Office
4 1 (0.14%) MS Visio
4 1 (0.14%) SPSS
Business Applications
1 11 (1.58%) Dynamics CRM
2 7 (1.01%) Adobe Campaign
3 4 (0.58%) SAP S/4HANA
4 3 (0.43%) NetSuite
4 3 (0.43%) Oracle Procure-to-Pay
5 2 (0.29%) Cerner Millennium
5 2 (0.29%) Dynamics NAV
5 2 (0.29%) SAP Hybris
5 2 (0.29%) SAP R/3
6 1 (0.14%) Elite 3E
6 1 (0.14%) Magento
6 1 (0.14%) Oracle EBS
6 1 (0.14%) Oracle EBS R12
6 1 (0.14%) Salesforce.com CRM
6 1 (0.14%) SAP HCM
6 1 (0.14%) SAP MDG
6 1 (0.14%) SAP Oil and Gas
6 1 (0.14%) Siebel CRM
Cloud Services
1 144 (20.72%) Azure
2 116 (16.69%) AWS
3 58 (8.35%) GCP
4 42 (6.04%) Power Platform
4 42 (6.04%) Serverless
5 24 (3.45%) IaaS
6 21 (3.02%) Azure Data Factory
7 20 (2.88%) PaaS
8 19 (2.73%) AWS Lambda
9 18 (2.59%) Azure Cosmos DB
10 15 (2.16%) Azure Functions
10 15 (2.16%) Azure Synapse Analytics
10 15 (2.16%) GitHub
11 14 (2.01%) SaaS
12 12 (1.73%) Amazon S3
12 12 (1.73%) Datadog
13 9 (1.29%) Snowflake
14 8 (1.15%) Amazon EC2
14 8 (1.15%) Azure Service Bus
14 8 (1.15%) Google Analytics
Communications & Networking
1 27 (3.88%) TCP/IP
2 24 (3.45%) SSL
3 6 (0.86%) Firewall
4 4 (0.58%) HTTP
5 3 (0.43%) Internet
6 2 (0.29%) DNS
6 2 (0.29%) SMTP
6 2 (0.29%) SSH
6 2 (0.29%) VPN
7 1 (0.14%) Cisco ASA
7 1 (0.14%) DHCP
7 1 (0.14%) Ethernet
7 1 (0.14%) HTTPS
7 1 (0.14%) IMAP
7 1 (0.14%) IPv4
7 1 (0.14%) IPv6
7 1 (0.14%) SNMP
7 1 (0.14%) WAN
7 1 (0.14%) Wi-Fi
7 1 (0.14%) WLAN
Database & Business Intelligence
1 84 (12.09%) Big Data
2 81 (11.65%) Relational Database
3 66 (9.50%) NoSQL
4 65 (9.35%) Data Warehouse
4 65 (9.35%) SQL Server
5 59 (8.49%) Hadoop
6 50 (7.19%) Metadata
7 42 (6.04%) Redis
8 41 (5.90%) PostgreSQL
9 39 (5.61%) Power BI
10 36 (5.18%) RDBMS
11 35 (5.04%) Data Lake
12 32 (4.60%) Apache Hive
13 31 (4.46%) Apache Cassandra
14 28 (4.03%) SQL Server Integration Services
15 26 (3.74%) Hazelcast
16 23 (3.31%) Azure SQL Database
16 23 (3.31%) MySQL
17 22 (3.17%) BigQuery
17 22 (3.17%) MongoDB
Development Applications
1 93 (13.38%) Git (software)
2 48 (6.91%) Jenkins
3 39 (5.61%) Maven
4 38 (5.47%) JIRA
5 24 (3.45%) JUnit
6 23 (3.31%) Selenium
7 19 (2.73%) Subversion
8 18 (2.59%) Gradle
9 17 (2.45%) Artifactory
10 15 (2.16%) JMeter
11 14 (2.01%) Cucumber
11 14 (2.01%) SpecFlow
11 14 (2.01%) webpack
12 13 (1.87%) Visual Studio
13 12 (1.73%) TeamCity
14 11 (1.58%) Mockito
15 9 (1.29%) Bitbucket
16 8 (1.15%) EasyMock
16 8 (1.15%) git-flow
16 8 (1.15%) gulp
General
1 180 (25.90%) Finance
2 140 (20.14%) Analytical Skills
2 140 (20.14%) Social Skills
3 125 (17.99%) Banking
4 88 (12.66%) Investment Banking
5 74 (10.65%) Front Office
6 38 (5.47%) Public Sector
7 25 (3.60%) Presentation Skills
8 24 (3.45%) Marketing
9 19 (2.73%) Organisational Skills
10 17 (2.45%) Retail
11 10 (1.44%) Documentation Skills
11 10 (1.44%) Manufacturing
12 9 (1.29%) German Language
13 7 (1.01%) French Language
13 7 (1.01%) Italian Language
13 7 (1.01%) Publishing
14 6 (0.86%) Influencing Skills
14 6 (0.86%) Local Government
14 6 (0.86%) Telecoms
Job Titles
1 318 (45.76%) Developer
2 139 (20.00%) Java Developer
3 92 (13.24%) Analyst
4 78 (11.22%) Senior Developer
5 74 (10.65%) Data Engineer
6 61 (8.78%) Senior Java Developer
7 56 (8.06%) Architect
8 43 (6.19%) Business Analyst
9 35 (5.04%) Python Developer
10 33 (4.75%) Full Stack Developer
11 30 (4.32%) Data Analyst
12 28 (4.03%) Software Engineer
13 26 (3.74%) Consultant
14 24 (3.45%) Investment Banking Java Developer
15 22 (3.17%) Azure Engineer
15 22 (3.17%) SQL Analyst
16 21 (3.02%) Core Java Developer
17 19 (2.73%) Data Architect
18 18 (2.59%) Java Consultant
18 18 (2.59%) Technical Architect
Libraries, Frameworks & Software Standards
1 77 (11.08%) RESTful
2 74 (10.65%) HTML
3 70 (10.07%) Kafka
4 65 (9.35%) .NET
5 64 (9.21%) Spring
6 60 (8.63%) REST
7 53 (7.63%) CSS
8 47 (6.76%) React
9 39 (5.61%) AngularJS
9 39 (5.61%) Spring Boot
9 39 (5.61%) Web Services
10 36 (5.18%) JSON
10 36 (5.18%) Node.js
11 28 (4.03%) HTML5
12 26 (3.74%) GraphQL
12 26 (3.74%) Memcached
13 25 (3.60%) .NET Core
14 23 (3.31%) jQuery
15 22 (3.17%) PySpark
16 21 (3.02%) Middleware
Miscellaneous
1 202 (29.06%) Algorithms
2 91 (13.09%) Foreign Exchange (FX)
3 60 (8.63%) Derivative
4 42 (6.04%) Management Information System
5 37 (5.32%) Fixed Income
6 30 (4.32%) User Experience
7 25 (3.60%) Cloud Native
8 24 (3.45%) Greenfield Project
9 18 (2.59%) CMDB
10 15 (2.16%) Enterprise Software
11 14 (2.01%) Equities
11 14 (2.01%) Legacy Systems
12 13 (1.87%) Virtual Team
13 11 (1.58%) Data Centre
14 10 (1.44%) N-Tier
15 8 (1.15%) Linux Command Line
15 8 (1.15%) Self-Motivation
16 7 (1.01%) Hedge funds
16 7 (1.01%) Marketing Technology
16 7 (1.01%) NHS
Operating Systems
1 99 (14.24%) Linux
2 47 (6.76%) Unix
3 35 (5.04%) Windows
4 4 (0.58%) Apple iOS
4 4 (0.58%) Red Hat Enterprise Linux
5 2 (0.29%) Android
5 2 (0.29%) Solaris
5 2 (0.29%) Ubuntu
6 1 (0.14%) AIX
6 1 (0.14%) CentOS
6 1 (0.14%) Debian
6 1 (0.14%) HPUX
6 1 (0.14%) Mac OS X
6 1 (0.14%) MVS
6 1 (0.14%) Oracle Linux
6 1 (0.14%) Slackware
6 1 (0.14%) Windows Server
Processes & Methodologies
1 283 (40.72%) Agile Software Development
2 139 (20.00%) Analytics
3 120 (17.27%) DevOps
4 118 (16.98%) Multithreading
5 102 (14.68%) Performance Tuning
6 95 (13.67%) Problem-Solving
7 94 (13.53%) OO
8 88 (12.66%) Software Engineering
9 87 (12.52%) Data Modelling
10 86 (12.37%) Scrum
11 85 (12.23%) Computer Science
12 76 (10.94%) Microservices
13 75 (10.79%) Business Intelligence
14 74 (10.65%) API Design
15 72 (10.36%) ETL
16 69 (9.93%) Test Automation
17 67 (9.64%) Low Latency
18 65 (9.35%) Full Stack Development
19 62 (8.92%) API Development
20 60 (8.63%) Data Pipeline
Programming Languages
1 266 (38.27%) SQL
2 248 (35.68%) Java
3 162 (23.31%) Python
4 96 (13.81%) JavaScript
5 92 (13.24%) Scala
6 87 (12.52%) C#
7 64 (9.21%) Java 8
8 56 (8.06%) C++
9 44 (6.33%) PL/SQL
10 34 (4.89%) TypeScript
11 25 (3.60%) Haskell
12 21 (3.02%) T-SQL
13 19 (2.73%) ES6
14 13 (1.87%) Apex Code
14 13 (1.87%) Go
15 12 (1.73%) R
16 11 (1.58%) PowerShell
17 10 (1.44%) Java 11
17 10 (1.44%) PHP
18 7 (1.01%) Shell Script
Qualifications
1 61 (8.78%) Degree
2 52 (7.48%) Security Cleared
3 37 (5.32%) SC Cleared
4 31 (4.46%) Computer Science Degree
5 8 (1.15%) PhD
6 7 (1.01%) DV Cleared
7 4 (0.58%) AWS Certification
7 4 (0.58%) BPSS Clearance
7 4 (0.58%) ISEB
8 3 (0.43%) DBS Check
9 2 (0.29%) Master's Degree
9 2 (0.29%) SAS Certification
10 1 (0.14%) CTC Cleared
Quality Assurance & Compliance
1 51 (7.34%) QA
2 35 (5.04%) Data Quality
3 14 (2.01%) Accessibility
4 4 (0.58%) GDPR
4 4 (0.58%) PMO
5 3 (0.43%) SLA
6 2 (0.29%) COBIT
6 2 (0.29%) ISO/IEC 27001
6 2 (0.29%) MiFID
6 2 (0.29%) NIST
7 1 (0.14%) PCI DSS
7 1 (0.14%) WCAG
System Software
1 84 (12.09%) Docker
2 8 (1.15%) Active Directory
3 4 (0.58%) HDFS
4 1 (0.14%) Virtual Machines
Systems Management
1 68 (9.78%) Kubernetes
2 31 (4.46%) Terraform
3 22 (3.17%) Ansible
4 16 (2.30%) BladeLogic
4 16 (2.30%) ITRS Geneos
4 16 (2.30%) Prometheus
5 13 (1.87%) MIIS
6 11 (1.58%) Kibana
6 11 (1.58%) logstash
7 10 (1.44%) Graphite
8 9 (1.29%) Opscode Chef
9 4 (0.58%) Control-M
9 4 (0.58%) Istio
9 4 (0.58%) Puppet
10 3 (0.43%) Core Impact
10 3 (0.43%) Kubeflow
10 3 (0.43%) Oracle Enterprise Manager
11 2 (0.29%) Data Guard
12 1 (0.14%) Nagios
12 1 (0.14%) SCCM
Vendors
1 95 (13.67%) Oracle
2 58 (8.35%) Microsoft
3 39 (5.61%) Databricks
4 32 (4.60%) Salesforce.com
5 30 (4.32%) Google
6 22 (3.17%) SAP
7 16 (2.30%) Altiris
8 14 (2.01%) Adobe
9 11 (1.58%) Cloudera
10 8 (1.15%) hybris
11 7 (1.01%) Marketo
11 7 (1.01%) Talend
12 6 (0.86%) Blackboard
12 6 (0.86%) New Relic
12 6 (0.86%) Telerik
12 6 (0.86%) Teradata
13 5 (0.72%) Dynatrace
13 5 (0.72%) Informatica
13 5 (0.72%) PagerDuty
13 5 (0.72%) Splunk