Period
to 27 January 2022

The table below looks at the prevalence of the term Data Structures in contract job vacancies. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Structures over the 6 months to 27 January 2022 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
6 months to
27 Jan 2022
Same period 2021 Same period 2020
Rank 250 278 328
Rank change year-on-year +28 +50 +2
Contract jobs citing Data Structures 954 393 553
As % of all contract jobs advertised in the UK 1.09% 0.93% 0.77%
As % of the Miscellaneous category 3.58% 2.97% 2.71%
Number of daily rates quoted 613 250 350
10th Percentile £405 £350 £356
25th Percentile £490 £425 £413
Median daily rate (50th Percentile) £588 £500 £515
Median % change year-on-year +17.50% -2.91% +3.00%
75th Percentile £750 £619 £595
90th Percentile £830 £750 £700
UK excluding London median daily rate £480 £450 £475
% change year-on-year +6.67% -5.26% +11.76%
Number of hourly rates quoted 8 6 9
10th Percentile £14.64 £29.38 £28.23
25th Percentile £18.05 £38.81 £37.50
Median hourly rate £26.14 £50.00 £42.50
Median % change year-on-year -47.73% +17.65% +10.98%
75th Percentile £28.62 £61.25 £73.75
90th Percentile £33.75 £61.64 -
UK excluding London median hourly rate £32.50 £57.50 £42.50
% change year-on-year -43.48% +35.29% +7.59%

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 with a requirement for generic IT skills.

All Generic IT Skills
UK
Contract vacancies with a requirement for generic IT skills 26,624 13,224 20,427
As % of all contract IT jobs advertised in the UK 30.32% 31.15% 28.55%
Number of daily rates quoted 18,739 8,986 13,361
10th Percentile £300 £258 £250
25th Percentile £415 £363 £363
Median daily rate (50th Percentile) £525 £475 £470
Median % change year-on-year +10.53% +1.06% -1.05%
75th Percentile £638 £588 £575
90th Percentile £744 £688 £675
UK excluding London median daily rate £450 £415 £425
% change year-on-year +8.43% -2.35% -
Number of hourly rates quoted 677 527 812
10th Percentile £12.43 £12.50 £12.30
25th Percentile £16.00 £16.88 £15.15
Median hourly rate £26.50 £26.27 £21.00
Median % change year-on-year +0.88% +25.10% +5.00%
75th Percentile £49.50 £46.75 £44.06
90th Percentile £65.00 £60.00 £52.95
UK excluding London median hourly rate £20.00 £25.00 £20.21
% change year-on-year -20.00% +23.73% +9.22%

Data Structures
Job Vacancy Trend

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

Job vacancy trend for Data Structures in the UK

Data Structures
Contractor Daily Rate Trend

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

Daily rate trend for Data Structures in the UK

Data Structures
Daily Rate Histogram

Daily rate distribution for jobs citing Data Structures over the 6 months to 27 January 2022.

Daily rate histogram for Data Structures in the UK

Data Structures
Contractor Hourly Rate Trend

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

Hourly rate trend for Data Structures in the UK

Data Structures
Hourly Rate Histogram

Hourly rate distribution of jobs citing Data Structures over the 6 months to 27 January 2022.

Hourly rate histogram for Data Structures in the UK

Data Structures
Top 17 Contract Locations

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 UK over the 6 months to 27 January 2022. 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
Jobs
England +25 768 £600 +14.29% 279
London +10 525 £638 +15.91% 176
Work from Home -3 273 £561 +17.54% 75
UK excluding London -9 262 £480 +6.67% 118
South East -14 89 £500 +13.31% 40
Scotland -19 46 £431 +1.47% 11
North of England -44 42 £450 -6.49% 28
South West -35 27 £490 +10.42% 8
Midlands -49 24 £488 +14.71% 20
Yorkshire -23 21 £500 +19.76% 10
East of England -30 21 £550 +15.79% 6
North West -47 19 £450 -16.28% 14
West Midlands -42 15 £400 -20.00% 12
Wales -16 10 £463 -7.50% 1
East Midlands -22 8 £488 +53.54% 8
Northern Ireland -11 3 - - 5
North East -3 2 £425 -15.00% 4

For the 6 months to 27 January 2022, 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 with a requirement for Data Structures.

1 371 (38.89%) Agile Software Development
2 327 (34.28%) Java
3 317 (33.23%) SQL
4 267 (27.99%) Finance
5 260 (27.25%) Python
6 253 (26.52%) Algorithms
7 215 (22.54%) Social Skills
8 174 (18.24%) Analytical Skills
9 160 (16.77%) Azure
10 156 (16.35%) Problem-Solving
11 146 (15.30%) Banking
12 142 (14.88%) Git (software)
13 141 (14.78%) Analytics
14 138 (14.47%) Data Modelling
14 138 (14.47%) OO
15 133 (13.94%) DevOps
16 124 (13.00%) JavaScript
17 121 (12.68%) Linux
18 115 (12.05%) AWS
19 111 (11.64%) C#
19 111 (11.64%) Multithreading
20 108 (11.32%) CI/CD
21 102 (10.69%) Performance Tuning
22 101 (10.59%) Microservices
23 98 (10.27%) Software Engineering
24 95 (9.96%) Investment Banking
25 94 (9.85%) Foreign Exchange (FX)
26 92 (9.64%) Front Office
27 90 (9.43%) Docker
28 89 (9.33%) Low Latency

Data Structures
Co-occurring IT Skills 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 50 (5.24%) Apache Spark
2 33 (3.46%) Tomcat
3 30 (3.14%) Elasticsearch
4 22 (2.31%) JBoss
5 20 (2.10%) Apache
5 20 (2.10%) Apache Airflow
5 20 (2.10%) Apache Qpid
6 19 (1.99%) SharePoint
7 16 (1.68%) CMS
7 16 (1.68%) EPiServer
8 11 (1.15%) SAS
9 10 (1.05%) Ethereum
10 9 (0.94%) GemFire
11 8 (0.84%) BizTalk Server
11 8 (0.84%) Camunda
12 7 (0.73%) Confluence
13 6 (0.63%) IIS
13 6 (0.63%) Oracle Workflow
14 4 (0.42%) nginx
14 4 (0.42%) Oracle Coherence
Applications
1 23 (2.41%) Microsoft Excel
2 7 (0.73%) Microsoft Office
3 5 (0.52%) Oracle Smart View
4 3 (0.31%) MS Visio
5 2 (0.21%) Microsoft PowerPoint
6 1 (0.10%) Spreadsheet
6 1 (0.10%) SPSS
Business Applications
1 23 (2.41%) Dynamics CRM
2 9 (0.94%) SAP S/4HANA
3 8 (0.84%) Payment Gateway
3 8 (0.84%) Shopify
4 6 (0.63%) Distributed Ledger
5 5 (0.52%) Oracle BPM
6 4 (0.42%) Dynamics AX
7 3 (0.31%) Cerner Millennium
8 2 (0.21%) Oracle ERP
8 2 (0.21%) R3 Corda
8 2 (0.21%) SAP CO
8 2 (0.21%) SAP ECC
8 2 (0.21%) SAP MDG
9 1 (0.10%) Dynamics GP
9 1 (0.10%) Dynamics NAV
9 1 (0.10%) Maximo
9 1 (0.10%) SAP FI
9 1 (0.10%) SAP FI/CO
9 1 (0.10%) SAP MDM
9 1 (0.10%) SAP Oil and Gas
Cloud Services
1 160 (16.77%) Azure
2 115 (12.05%) AWS
3 53 (5.56%) GCP
3 53 (5.56%) Power Platform
4 35 (3.67%) Serverless
5 29 (3.04%) Azure Data Factory
6 19 (1.99%) Azure Synapse Analytics
7 16 (1.68%) AWS CloudFormation
7 16 (1.68%) AWS Lambda
7 16 (1.68%) PaaS
8 14 (1.47%) npm
9 12 (1.26%) Amazon Kinesis
9 12 (1.26%) Datadog
9 12 (1.26%) Snowflake
10 11 (1.15%) SaaS
11 9 (0.94%) Amazon S3
11 9 (0.94%) Cloud Computing
11 9 (0.94%) Dynamics 365
11 9 (0.94%) IaaS
12 8 (0.84%) Azure Functions
Communications & Networking
1 12 (1.26%) Firewall
1 12 (1.26%) TCP/IP
2 10 (1.05%) DNS
2 10 (1.05%) Internet
2 10 (1.05%) Multicast
3 8 (0.84%) DMZ
4 4 (0.42%) HTTP
5 2 (0.21%) AMQP
5 2 (0.21%) HTTPS
5 2 (0.21%) Peer-to-Peer Networking
5 2 (0.21%) SSL
6 1 (0.10%) DSL
6 1 (0.10%) iSCSI
6 1 (0.10%) Kerberos
6 1 (0.10%) MPLS
6 1 (0.10%) Network Security
6 1 (0.10%) PuTTY
6 1 (0.10%) Unified Communications
6 1 (0.10%) VLAN
6 1 (0.10%) VXLAN
Database & Business Intelligence
1 82 (8.60%) SQL Server
2 73 (7.65%) Big Data
3 72 (7.55%) Data Warehouse
4 70 (7.34%) Relational Database
5 59 (6.18%) NoSQL
6 58 (6.08%) Data Lake
7 51 (5.35%) Metadata
8 49 (5.14%) Hadoop
9 48 (5.03%) Power BI
10 35 (3.67%) SQL Server Integration Services
11 33 (3.46%) RDBMS
12 26 (2.73%) Azure SQL Database
13 24 (2.52%) PostgreSQL
14 21 (2.20%) Apache Cassandra
15 20 (2.10%) BigQuery
15 20 (2.10%) Tableau
16 19 (1.99%) MongoDB
17 18 (1.89%) Blockchain
17 18 (1.89%) MySQL
18 16 (1.68%) Oracle Reports
Development Applications
1 142 (14.88%) Git (software)
2 61 (6.39%) Jenkins
3 57 (5.97%) JIRA
4 48 (5.03%) Maven
5 31 (3.25%) Subversion
6 27 (2.83%) Selenium
7 23 (2.41%) webpack
8 21 (2.20%) Artifactory
9 19 (1.99%) Visual Studio
10 17 (1.78%) SpecFlow
11 15 (1.57%) Gradle
11 15 (1.57%) JMeter
11 15 (1.57%) JUnit
12 13 (1.36%) Cucumber
13 12 (1.26%) GitLab
13 12 (1.26%) TeamCity
14 11 (1.15%) gulp
15 10 (1.05%) Bitbucket
15 10 (1.05%) ERwin
15 10 (1.05%) Mocha
General
1 267 (27.99%) Finance
2 215 (22.54%) Social Skills
3 174 (18.24%) Analytical Skills
4 146 (15.30%) Banking
5 95 (9.96%) Investment Banking
6 92 (9.64%) Front Office
7 50 (5.24%) Public Sector
8 32 (3.35%) Organisational Skills
9 27 (2.83%) Retail
10 20 (2.10%) Games
11 16 (1.68%) Telecoms
12 13 (1.36%) Legal
12 13 (1.36%) Manufacturing
12 13 (1.36%) Presentation Skills
13 12 (1.26%) Financial Institution
13 12 (1.26%) Marketing
14 11 (1.15%) Documentation Skills
14 11 (1.15%) Influencing Skills
15 8 (0.84%) General Ledger
16 7 (0.73%) Publishing
Job Titles
1 388 (40.67%) Developer
2 170 (17.82%) Analyst
3 155 (16.25%) Java Developer
4 91 (9.54%) Architect
5 90 (9.43%) Senior Developer
6 89 (9.33%) Data Engineer
7 81 (8.49%) Business Analyst
8 72 (7.55%) Senior Java Developer
9 55 (5.77%) Python Developer
10 37 (3.88%) Consultant
10 37 (3.88%) Software Engineer
11 36 (3.77%) Data Architect
11 36 (3.77%) Full Stack Developer
12 34 (3.56%) Core Java Developer
13 33 (3.46%) Data Analyst
14 27 (2.83%) Azure Engineer
15 24 (2.52%) Java Consultant
16 23 (2.41%) Python Engineer
17 22 (2.31%) Solutions Architect
17 22 (2.31%) SQL Analyst
Libraries, Frameworks & Software Standards
1 82 (8.60%) JSON
2 80 (8.39%) REST
3 74 (7.76%) React
4 73 (7.65%) .NET
4 73 (7.65%) RESTful
5 68 (7.13%) Kafka
6 67 (7.02%) HTML
7 62 (6.50%) Web Services
8 47 (4.93%) CSS
8 47 (4.93%) Spring
9 46 (4.82%) Node.js
10 41 (4.30%) XML
11 38 (3.98%) PySpark
12 35 (3.67%) AngularJS
13 34 (3.56%) jQuery
14 29 (3.04%) Middleware
14 29 (3.04%) Spark Streaming
15 25 (2.62%) HTML5
16 24 (2.52%) FIX Protocol
17 20 (2.10%) Spring Boot
Miscellaneous
1 253 (26.52%) Algorithms
2 94 (9.85%) Foreign Exchange (FX)
3 61 (6.39%) User Experience
4 54 (5.66%) Derivative
5 31 (3.25%) Fixed Income
5 31 (3.25%) Management Information System
6 28 (2.94%) Greenfield Project
7 22 (2.31%) Legacy Systems
8 21 (2.20%) Equities
9 19 (1.99%) Self-Motivation
9 19 (1.99%) Virtual Team
10 18 (1.89%) Cloud Native
10 18 (1.89%) Data Centre
11 17 (1.78%) Data Protection Act
12 16 (1.68%) Renewable Energy
13 12 (1.26%) Contract for Difference
13 12 (1.26%) Spread Betting
14 11 (1.15%) Hedge funds
15 9 (0.94%) N-Tier
15 9 (0.94%) VLE
Operating Systems
1 121 (12.68%) Linux
2 73 (7.65%) Windows
3 43 (4.51%) Unix
4 6 (0.63%) Android
5 5 (0.52%) Apple iOS
6 2 (0.21%) Red Hat Enterprise Linux
6 2 (0.21%) Windows Server
7 1 (0.10%) HPUX
7 1 (0.10%) Mac OS
7 1 (0.10%) Mac OS X
7 1 (0.10%) MVS
7 1 (0.10%) Solaris
7 1 (0.10%) Ubuntu
7 1 (0.10%) VMS
Processes & Methodologies
1 371 (38.89%) Agile Software Development
2 156 (16.35%) Problem-Solving
3 141 (14.78%) Analytics
4 138 (14.47%) Data Modelling
4 138 (14.47%) OO
5 133 (13.94%) DevOps
6 111 (11.64%) Multithreading
7 108 (11.32%) CI/CD
8 102 (10.69%) Performance Tuning
9 101 (10.59%) Microservices
10 98 (10.27%) Software Engineering
11 89 (9.33%) Low Latency
12 80 (8.39%) Business Intelligence
13 75 (7.86%) Computer Science
14 73 (7.65%) Test Automation
15 72 (7.55%) ETL
16 70 (7.34%) Scrum
17 66 (6.92%) Algorithmic Trading
17 66 (6.92%) Data Transformation
17 66 (6.92%) Migration
Programming Languages
1 327 (34.28%) Java
2 317 (33.23%) SQL
3 260 (27.25%) Python
4 124 (13.00%) JavaScript
5 111 (11.64%) C#
6 80 (8.39%) C++
7 56 (5.87%) Java 8
8 46 (4.82%) Scala
9 38 (3.98%) TypeScript
10 30 (3.14%) PL/SQL
10 30 (3.14%) T-SQL
11 24 (2.52%) Shell Script
12 21 (2.20%) Bash
13 20 (2.10%) ES6
14 18 (1.89%) PHP
15 16 (1.68%) PowerShell
16 14 (1.47%) Kotlin
17 12 (1.26%) R
18 11 (1.15%) C
19 9 (0.94%) SPARQL
Qualifications
1 89 (9.33%) Security Cleared
2 55 (5.77%) Degree
3 52 (5.45%) SC Cleared
4 24 (2.52%) Computer Science Degree
5 17 (1.78%) PhD
6 13 (1.36%) DV Cleared
7 10 (1.05%) Numerate Degree
8 9 (0.94%) Master's Degree
9 8 (0.84%) OSCP
10 4 (0.42%) BPSS Clearance
11 2 (0.21%) DBS Check
12 1 (0.10%) ISEB
12 1 (0.10%) MCITP
12 1 (0.10%) Microsoft Certification
Quality Assurance & Compliance
1 62 (6.50%) QA
2 49 (5.14%) Data Quality
3 16 (1.68%) Accessibility
4 12 (1.26%) GDPR
5 8 (0.84%) PCI DSS
6 6 (0.63%) PMO
7 5 (0.52%) SLA
8 2 (0.21%) COBIT
8 2 (0.21%) NIST
9 1 (0.10%) Disclosure Scotland
9 1 (0.10%) IFRS
9 1 (0.10%) ISO 20022
9 1 (0.10%) MiFID
9 1 (0.10%) SEPA
9 1 (0.10%) Solvency II
System Software
1 90 (9.43%) Docker
2 3 (0.31%) Active Directory
2 3 (0.31%) Apache Flume
3 2 (0.21%) HDFS
3 2 (0.21%) Virtual Machines
4 1 (0.10%) Hyper-V
4 1 (0.10%) LXC
4 1 (0.10%) VMware Infrastructure
4 1 (0.10%) vSphere
Systems Management
1 63 (6.60%) Kubernetes
2 45 (4.72%) Ansible
3 25 (2.62%) Terraform
4 17 (1.78%) Kibana
5 15 (1.57%) BladeLogic
5 15 (1.57%) ITRS Geneos
6 14 (1.47%) Red Hat Satellite
7 10 (1.05%) logstash
8 9 (0.94%) Graphite
8 9 (0.94%) Opscode Chef
9 5 (0.52%) HP ALM
9 5 (0.52%) Puppet
10 3 (0.31%) Oozie
10 3 (0.31%) Oracle Enterprise Manager
11 2 (0.21%) Data Guard
11 2 (0.21%) Hadoop YARN
11 2 (0.21%) HP Quality Center
12 1 (0.10%) Core Impact
12 1 (0.10%) Istio
12 1 (0.10%) vCenter Server
Vendors
1 82 (8.60%) Microsoft
2 73 (7.65%) Oracle
3 38 (3.98%) SAP
4 30 (3.14%) Databricks
5 20 (2.10%) Salesforce.com
6 18 (1.89%) Red Hat
7 17 (1.78%) Google
8 15 (1.57%) Altiris
9 13 (1.36%) Telerik
10 12 (1.26%) Cloudera
11 9 (0.94%) Blackboard
12 8 (0.84%) PayPal
12 8 (0.84%) WorldPay
13 7 (0.73%) Adobe
13 7 (0.73%) Informatica
14 6 (0.63%) HP
14 6 (0.63%) ServiceNow
15 4 (0.42%) IBM
16 3 (0.31%) Cisco
16 3 (0.31%) Juniper