Period
to 10 May 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 10 May 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
10 May 2021
Same period 2020 Same period 2019
Rank 232 282 307
Rank change year-on-year +50 +25 +53
Contract jobs citing Data Structures 507 414 768
As % of all contract jobs advertised in England 1.15% 0.89% 0.90%
As % of the Miscellaneous category 3.80% 3.09% 3.14%
Number of daily rates quoted 336 260 506
10th Percentile £400 £370 £363
25th Percentile £463 £425 £419
Median daily rate (50th Percentile) £575 £522 £523
Median % change year-on-year +10.15% -0.10% +3.47%
75th Percentile £675 £624 £622
90th Percentile £775 £725 £713
UK median daily rate £550 £518 £513
% change year-on-year +6.18% +1.07% +2.50%
Number of hourly rates quoted 1 3 4
10th Percentile " £32.07 £28.00
25th Percentile £36.75 £40.20 £38.13
Median hourly rate £44.50 £57.50 £50.00
Median % change year-on-year -22.61% +15.00% -27.27%
75th Percentile £52.25 £67.50 £57.50
90th Percentile " £71.25 £64.25
UK median hourly rate £43.50 £57.50 £50.00
% change year-on-year -24.35% +15.00% -27.27%

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 13,333 13,381 24,458
As % of all contract IT jobs advertised in England 30.14% 28.74% 28.78%
Number of daily rates quoted 8,915 8,840 16,339
10th Percentile £275 £250 £297
25th Percentile £388 £369 £388
Median daily rate (50th Percentile) £500 £475 £475
Median % change year-on-year +5.26% - -
75th Percentile £606 £600 £588
90th Percentile £700 £700 £675
UK median daily rate £500 £475 £475
% change year-on-year +5.16% - +2.70%
Number of hourly rates quoted 541 556 785
10th Percentile £12.38 £12.61 £11.85
25th Percentile £16.50 £15.98 £14.61
Median hourly rate £26.00 £21.51 £21.00
Median % change year-on-year +20.86% +2.44% -2.33%
75th Percentile £47.50 £43.75 £44.27
90th Percentile £58.75 £53.00 £51.25
UK median hourly rate £25.75 £22.14 £20.50
% change year-on-year +16.29% +8.01% -4.65%

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 10 May 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
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 10 May 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 +43 368 £600 +9.09% 146
South East +30 45 £500 +1.01% 27
South West +44 19 £500 +13.64% 5
Midlands +36 19 £475 -15.56% 4
West Midlands +17 16 £495 - 4
North of England +10 11 £538 +6.38% 13
East of England +18 10 £450 +9.09% 7
North West +2 7 £488 -2.50% 6
Yorkshire +7 3 £575 -4.17% 7
East Midlands +18 2 £398 -29.33%
North East +23 1 - -
Data Structures
UK

For the 6 months to 10 May 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.

1 191 (37.67%) SQL
2 188 (37.08%) Agile Software Development
3 159 (31.36%) Algorithms
4 148 (29.19%) Java
5 141 (27.81%) Finance
6 137 (27.02%) AWS
7 126 (24.85%) Social Skills
8 120 (23.67%) Python
9 110 (21.70%) Azure
10 96 (18.93%) Banking
11 94 (18.54%) Computer Science
11 94 (18.54%) Multithreading
12 88 (17.36%) Analytical Skills
13 86 (16.96%) Analytics
14 85 (16.77%) C++
15 80 (15.78%) Problem-Solving
16 75 (14.79%) C#
16 75 (14.79%) Linux
16 75 (14.79%) ETL
17 73 (14.40%) Software Engineering
17 73 (14.40%) DevOps
18 72 (14.20%) SQL Server
18 72 (14.20%) Foreign Exchange (FX)
19 70 (13.81%) JavaScript
20 69 (13.61%) Oracle
21 68 (13.41%) HTML
21 68 (13.41%) Performance Tuning
22 66 (13.02%) Business Intelligence
23 64 (12.62%) Scrum
24 63 (12.43%) Front Office

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 45 (8.88%) Apache Spark
2 17 (3.35%) Apache Airflow
3 12 (2.37%) SAS
3 12 (2.37%) SharePoint
4 9 (1.78%) IIS
5 7 (1.38%) Apache
5 7 (1.38%) Tomcat
6 6 (1.18%) CMS
7 5 (0.99%) Apache Qpid
7 5 (0.99%) Confluence
7 5 (0.99%) Luigi
8 4 (0.79%) Oracle Coherence
9 3 (0.59%) Headless CMS
9 3 (0.59%) Oracle Workflow
10 2 (0.39%) EPiServer
10 2 (0.39%) IBM Domino
10 2 (0.39%) JBoss
10 2 (0.39%) Jupyter
10 2 (0.39%) nginx
10 2 (0.39%) Oracle SOA Suite
Applications
1 20 (3.94%) Microsoft Excel
2 11 (2.17%) Microsoft PowerPoint
3 8 (1.58%) Microsoft Office
4 4 (0.79%) Photoshop
5 1 (0.20%) Microsoft Project
5 1 (0.20%) MS Visio
Business Applications
1 10 (1.97%) Dynamics CRM
2 4 (0.79%) Adobe Campaign
3 2 (0.39%) Elite 3E
3 2 (0.39%) NetSuite
3 2 (0.39%) SAP HCM
4 1 (0.20%) Dynamics GP
4 1 (0.20%) Loan IQ
4 1 (0.20%) Magento
4 1 (0.20%) Oracle EBS
4 1 (0.20%) SAP MDM
4 1 (0.20%) SAP S/4HANA
Cloud Services
1 137 (27.02%) AWS
2 110 (21.70%) Azure
3 30 (5.92%) AWS CloudFormation
3 30 (5.92%) GCP
4 23 (4.54%) Power Platform
4 23 (4.54%) Serverless
5 17 (3.35%) GitHub
6 16 (3.16%) Amazon S3
7 15 (2.96%) AWS Lambda
8 14 (2.76%) Heroku
9 12 (2.37%) Amazon Kinesis
9 12 (2.37%) IaaS
10 11 (2.17%) Google Analytics
10 11 (2.17%) PaaS
11 9 (1.78%) Amazon ECS
11 9 (1.78%) Azure Data Factory
11 9 (1.78%) SaaS
12 7 (1.38%) Azure Synapse Analytics
13 6 (1.18%) Cloud Computing
14 5 (0.99%) Amazon EC2
Communications & Networking
1 12 (2.37%) HTTP
2 8 (1.58%) SSL
3 5 (0.99%) TCP/IP
4 2 (0.39%) Internet
5 1 (0.20%) Firewall
5 1 (0.20%) OpenVPN
Database & Business Intelligence
1 72 (14.20%) SQL Server
2 57 (11.24%) Data Warehouse
3 54 (10.65%) NoSQL
4 44 (8.68%) Big Data
5 40 (7.89%) PostgreSQL
6 35 (6.90%) Relational Database
7 34 (6.71%) Hadoop
8 30 (5.92%) Data Lake
9 24 (4.73%) Snowflake Schema
10 22 (4.34%) Power BI
11 21 (4.14%) Data Mining
11 21 (4.14%) Tableau
12 20 (3.94%) SQL Server Integration Services
13 17 (3.35%) Amazon Redshift
14 16 (3.16%) MySQL
15 15 (2.96%) Parquet
16 14 (2.76%) Oracle Database
16 14 (2.76%) Star Schema
17 12 (2.37%) Redis
18 11 (2.17%) Apache Hive
Development Applications
1 44 (8.68%) JIRA
2 33 (6.51%) Git (software)
3 24 (4.73%) Jenkins
4 20 (3.94%) Visual Studio
5 18 (3.55%) webpack
6 17 (3.35%) JUnit
7 16 (3.16%) git-flow
8 15 (2.96%) SQL Server Management Studio (SSMS)
9 13 (2.56%) TeamCity
10 12 (2.37%) Mockito
11 11 (2.17%) Maven
12 10 (1.97%) Gradle
13 9 (1.78%) Cucumber
14 7 (1.38%) Subversion
15 6 (1.18%) GitLab
16 5 (0.99%) Concordion
16 5 (0.99%) JBehave
16 5 (0.99%) PHPUnit
17 4 (0.79%) Storybook
17 4 (0.79%) Xcode
General
1 141 (27.81%) Finance
2 126 (24.85%) Social Skills
3 96 (18.93%) Banking
4 88 (17.36%) Analytical Skills
5 63 (12.43%) Front Office
6 54 (10.65%) Investment Banking
7 12 (2.37%) Legal
7 12 (2.37%) Retail
8 11 (2.17%) Telecoms
9 9 (1.78%) Public Sector
10 8 (1.58%) Influencing Skills
10 8 (1.58%) Organisational Skills
11 7 (1.38%) Presentation Skills
12 6 (1.18%) German Language
12 6 (1.18%) Marketing
13 4 (0.79%) Financial Institution
13 4 (0.79%) French Language
13 4 (0.79%) Italian Language
13 4 (0.79%) Pharmaceutical
14 2 (0.39%) Games
Job Titles
1 264 (52.07%) Developer
2 95 (18.74%) Java Developer
3 51 (10.06%) Data Engineer
4 49 (9.66%) Analyst
5 48 (9.47%) Architect
5 48 (9.47%) C# Developer
6 33 (6.51%) Front Office Developer
7 30 (5.92%) Investment Banking Java Developer
8 29 (5.72%) Business Analyst
9 28 (5.52%) Data Architect
10 26 (5.13%) Quantitative Developer
11 25 (4.93%) Full Stack Developer
12 24 (4.73%) React Developer
13 22 (4.34%) C# Quant Developer
13 22 (4.34%) Senior Developer
14 20 (3.94%) .NET Developer
15 19 (3.75%) Consultant
16 18 (3.55%) Python Developer
17 17 (3.35%) SQL Developer
18 15 (2.96%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 68 (13.41%) HTML
2 59 (11.64%) .NET
3 51 (10.06%) Kafka
4 46 (9.07%) Spring
4 46 (9.07%) Web Services
5 44 (8.68%) CSS
6 42 (8.28%) .NET Core
7 40 (7.89%) REST
8 37 (7.30%) React
9 36 (7.10%) FIX Protocol
10 29 (5.72%) AngularJS
11 28 (5.52%) Spring Boot
12 27 (5.33%) GraphQL
13 25 (4.93%) HTML5
13 25 (4.93%) XML
14 23 (4.54%) Node.js
14 23 (4.54%) RESTful
15 21 (4.14%) Redux
16 19 (3.75%) JSON
17 18 (3.55%) NumPy
Miscellaneous
1 159 (31.36%) Algorithms
2 72 (14.20%) Foreign Exchange (FX)
3 48 (9.47%) Derivative
4 43 (8.48%) User Experience
5 41 (8.09%) Greenfield Project
6 33 (6.51%) Enterprise Software
6 33 (6.51%) Management Information System
7 28 (5.52%) Hedge funds
8 21 (4.14%) Virtual Team
9 15 (2.96%) Cloud Native
10 12 (2.37%) Fixed Income
11 11 (2.17%) Clustering
11 11 (2.17%) Self-Motivation
12 10 (1.97%) CMDB
12 10 (1.97%) Reference Data
13 9 (1.78%) Taxonomies
14 8 (1.58%) Equities
15 7 (1.38%) Linux Command Line
16 4 (0.79%) Cyber Defence
16 4 (0.79%) Mobile App
Operating Systems
1 75 (14.79%) Linux
2 31 (6.11%) Unix
3 9 (1.78%) Windows
4 7 (1.38%) Apple iOS
4 7 (1.38%) CentOS
5 6 (1.18%) Android
5 6 (1.18%) Ubuntu
6 2 (0.39%) Mac OS
Processes & Methodologies
1 188 (37.08%) Agile Software Development
2 94 (18.54%) Computer Science
2 94 (18.54%) Multithreading
3 86 (16.96%) Analytics
4 80 (15.78%) Problem-Solving
5 75 (14.79%) ETL
6 73 (14.40%) DevOps
6 73 (14.40%) Software Engineering
7 68 (13.41%) Performance Tuning
8 66 (13.02%) Business Intelligence
9 64 (12.62%) Scrum
10 61 (12.03%) OO
11 59 (11.64%) Data Modelling
12 56 (11.05%) TDD
13 50 (9.86%) Low Latency
13 50 (9.86%) Multithreaded Programming
14 49 (9.66%) Data Science
14 49 (9.66%) Machine Learning
15 47 (9.27%) Data Management
15 47 (9.27%) Data Pipeline
Programming Languages
1 191 (37.67%) SQL
2 148 (29.19%) Java
3 120 (23.67%) Python
4 85 (16.77%) C++
5 75 (14.79%) C#
6 70 (13.81%) JavaScript
7 57 (11.24%) Scala
8 33 (6.51%) PL/SQL
9 31 (6.11%) TypeScript
10 29 (5.72%) Java 8
11 19 (3.75%) R
12 14 (2.76%) ES6
12 14 (2.76%) T-SQL
13 10 (1.97%) Haskell
13 10 (1.97%) PowerShell
14 9 (1.78%) C
14 9 (1.78%) Go
15 8 (1.58%) MATLAB
16 7 (1.38%) Apple Swift
16 7 (1.38%) Shell Script
Qualifications
1 46 (9.07%) Degree
1 46 (9.07%) Security Cleared
2 45 (8.88%) SC Cleared
3 28 (5.52%) Computer Science Degree
4 19 (3.75%) DV Cleared
5 8 (1.58%) AWS Certification
5 8 (1.58%) Master's Degree
5 8 (1.58%) PhD
6 5 (0.99%) SAS Certification
7 3 (0.59%) ISEB
8 2 (0.39%) ACCA
8 2 (0.39%) CIMA
9 1 (0.20%) BPSS Clearance
9 1 (0.20%) DBS Check
9 1 (0.20%) ISTQB
Quality Assurance & Compliance
1 36 (7.10%) Data Quality
2 32 (6.31%) QA
3 4 (0.79%) GDPR
3 4 (0.79%) IFRS
3 4 (0.79%) Sarbanes-Oxley
4 3 (0.59%) MiFID
5 2 (0.39%) Dodd-Frank
5 2 (0.39%) IFRS 9
6 1 (0.20%) ISO 20022
6 1 (0.20%) PCI DSS
6 1 (0.20%) WCAG
System Software
1 36 (7.10%) Docker
2 5 (0.99%) HDFS
3 4 (0.79%) ISA Server
4 1 (0.20%) Active Directory
4 1 (0.20%) Ceph
4 1 (0.20%) Oracle RAC
Systems Management
1 35 (6.90%) Kubernetes
2 30 (5.92%) Terraform
3 8 (1.58%) Prometheus
4 6 (1.18%) MIIS
4 6 (1.18%) Puppet
5 5 (0.99%) Ansible
6 4 (0.79%) Control-M
6 4 (0.79%) Istio
7 3 (0.59%) Opscode Chef
8 2 (0.39%) Kubeflow
9 1 (0.20%) Core Impact
9 1 (0.20%) Data Guard
9 1 (0.20%) Hadoop YARN
9 1 (0.20%) HP ALM
9 1 (0.20%) Oracle EDQ
9 1 (0.20%) Oracle Enterprise Manager
9 1 (0.20%) Oracle RMAN
Vendors
1 69 (13.61%) Oracle
2 45 (8.88%) Microsoft
3 40 (7.89%) Google
4 17 (3.35%) Salesforce.com
5 12 (2.37%) Databricks
5 12 (2.37%) Teradata
6 11 (2.17%) SAP
7 7 (1.38%) DevExpress
8 6 (1.18%) IBM
9 5 (0.99%) Apple
10 4 (0.79%) Adobe
10 4 (0.79%) Marketo
11 3 (0.59%) Cloudera
11 3 (0.59%) Splunk
11 3 (0.59%) Talend
12 2 (0.39%) Atlassian
12 2 (0.39%) New Relic
12 2 (0.39%) PagerDuty
12 2 (0.39%) StreamSets
12 2 (0.39%) Xerox