Period
to 14 May 2021

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 14 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
6 months to
14 May 2021
Same period 2020 Same period 2019
Rank 243 286 309
Rank change year-on-year +43 +23 +35
Contract jobs citing Data Structures 608 437 807
As % of all contract jobs advertised in the UK 1.06% 0.87% 0.88%
As % of the Miscellaneous category 3.62% 3.04% 3.11%
Number of daily rates quoted 388 274 526
10th Percentile £400 £375 £363
25th Percentile £462 £425 £413
Median daily rate (50th Percentile) £550 £518 £513
Median % change year-on-year +6.28% +0.98% +2.50%
75th Percentile £656 £613 £608
90th Percentile £775 £725 £706
UK excluding London median daily rate £493 £498 £450
% change year-on-year -0.90% +10.56% -
Number of hourly rates quoted 2 3 4
10th Percentile £37.20 £32.07 £28.00
25th Percentile £37.88 £40.20 £38.13
Median hourly rate £43.50 £57.50 £50.00
Median % change year-on-year -24.35% +15.00% -28.57%
75th Percentile £50.13 £67.50 £57.50
90th Percentile £51.40 £71.25 £64.25
UK excluding London median hourly rate - £49.96 £52.50
% change year-on-year - -4.83% -34.97%

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 16,778 14,397 25,943
As % of all contract IT jobs advertised in the UK 29.36% 28.55% 28.43%
Number of daily rates quoted 11,258 9,350 17,162
10th Percentile £288 £231 £286
25th Percentile £400 £363 £375
Median daily rate (50th Percentile) £500 £475 £475
Median % change year-on-year +5.26% - +2.70%
75th Percentile £600 £588 £575
90th Percentile £700 £700 £675
UK excluding London median daily rate £425 £425 £425
Number of hourly rates quoted 645 627 857
10th Percentile £12.11 £12.61 £11.80
25th Percentile £16.00 £16.20 £14.00
Median hourly rate £26.00 £22.50 £20.50
Median % change year-on-year +15.56% +9.76% -4.65%
75th Percentile £47.96 £46.33 £43.75
90th Percentile £60.00 £53.75 £50.10
UK excluding London median hourly rate £24.00 £20.11 £18.73
% change year-on-year +19.34% +7.40% -7.80%

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 14 May 2021.

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
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 14 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
England +51 525 £565 +8.61% 195
London +31 386 £600 +9.09% 137
UK excluding London +22 146 £493 -0.90% 66
Work from Home -149 138 £525 -4.55% 67
South East +8 45 £500 +1.01% 24
Scotland +5 27 £438 -27.08% 5
South West +43 19 £500 +13.64% 5
Midlands +23 19 £475 - 5
West Midlands +16 16 £495 - 3
North of England -1 11 £538 +7.39% 16
East of England +19 10 £450 +9.09% 8
Northern Ireland +12 8 - - 1
Wales +7 7 £500 +2.04% 2
North West -4 7 £488 -2.50% 8
Yorkshire +19 3 £575 -2.54% 8
East Midlands - 2 £398 - 2
North East +15 1 - -

For the 6 months to 14 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 with a requirement for Data Structures.

1 235 (38.65%) SQL
1 235 (38.65%) Agile Software Development
2 187 (30.76%) Java
3 181 (29.77%) Algorithms
4 158 (25.99%) Finance
5 155 (25.49%) AWS
6 150 (24.67%) Social Skills
7 145 (23.85%) Python
8 131 (21.55%) Azure
9 109 (17.93%) Multithreading
10 104 (17.11%) Banking
11 102 (16.78%) Analytics
12 100 (16.45%) Computer Science
13 97 (15.95%) C++
13 97 (15.95%) Analytical Skills
14 95 (15.63%) ETL
15 93 (15.30%) DevOps
16 90 (14.80%) Problem-Solving
17 85 (13.98%) Linux
18 84 (13.82%) C#
18 84 (13.82%) Business Intelligence
19 83 (13.65%) Software Engineering
20 82 (13.49%) Oracle
21 81 (13.32%) JavaScript
22 80 (13.16%) SQL Server
23 77 (12.66%) Foreign Exchange (FX)
23 77 (12.66%) Scrum
24 76 (12.50%) Data Warehouse
25 74 (12.17%) HTML
26 72 (11.84%) OO

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 53 (8.72%) Apache Spark
2 21 (3.45%) Apache Airflow
3 14 (2.30%) SAS
4 12 (1.97%) SharePoint
5 11 (1.81%) Apache
6 9 (1.48%) IIS
7 7 (1.15%) CMS
7 7 (1.15%) Luigi
7 7 (1.15%) Tomcat
8 6 (0.99%) Confluence
8 6 (0.99%) Elasticsearch
9 5 (0.82%) Apache Qpid
9 5 (0.82%) Oracle Workflow
10 4 (0.66%) Oracle Coherence
11 3 (0.49%) Headless CMS
11 3 (0.49%) IBM Domino
12 2 (0.33%) EPiServer
12 2 (0.33%) JBoss
12 2 (0.33%) Jupyter
12 2 (0.33%) Oracle SOA Suite
Applications
1 23 (3.78%) Microsoft Excel
2 11 (1.81%) Microsoft PowerPoint
3 7 (1.15%) Microsoft Office
4 4 (0.66%) Photoshop
5 1 (0.16%) Microsoft Project
5 1 (0.16%) MS Visio
Business Applications
1 10 (1.64%) Dynamics CRM
2 4 (0.66%) Adobe Campaign
3 2 (0.33%) Elite 3E
3 2 (0.33%) NetSuite
3 2 (0.33%) SAP HCM
4 1 (0.16%) Dynamics GP
4 1 (0.16%) Loan IQ
4 1 (0.16%) Magento
4 1 (0.16%) Oracle EBS
4 1 (0.16%) SAP HR
4 1 (0.16%) SAP MDM
4 1 (0.16%) SAP S/4HANA
Cloud Services
1 155 (25.49%) AWS
2 131 (21.55%) Azure
3 34 (5.59%) GCP
3 34 (5.59%) Power Platform
4 31 (5.10%) AWS CloudFormation
5 26 (4.28%) Serverless
6 20 (3.29%) Amazon S3
7 18 (2.96%) GitHub
8 16 (2.63%) AWS Lambda
9 15 (2.47%) Google Analytics
9 15 (2.47%) IaaS
10 14 (2.30%) Heroku
11 12 (1.97%) Amazon Kinesis
11 12 (1.97%) Azure Data Factory
11 12 (1.97%) PaaS
12 9 (1.48%) Amazon ECS
12 9 (1.48%) Azure Synapse Analytics
12 9 (1.48%) SaaS
13 7 (1.15%) Amazon EC2
13 7 (1.15%) Cloud Computing
Communications & Networking
1 12 (1.97%) HTTP
2 11 (1.81%) SSL
3 7 (1.15%) TCP/IP
4 2 (0.33%) Firewall
4 2 (0.33%) Internet
5 1 (0.16%) DNS
5 1 (0.16%) OpenVPN
Database & Business Intelligence
1 80 (13.16%) SQL Server
2 76 (12.50%) Data Warehouse
3 67 (11.02%) NoSQL
4 53 (8.72%) Big Data
5 44 (7.24%) PostgreSQL
6 42 (6.91%) Data Lake
6 42 (6.91%) Relational Database
7 37 (6.09%) Hadoop
8 33 (5.43%) Power BI
9 28 (4.61%) Snowflake Schema
10 25 (4.11%) Tableau
11 24 (3.95%) Data Mining
11 24 (3.95%) SQL Server Integration Services
12 19 (3.13%) Amazon Redshift
12 19 (3.13%) MySQL
12 19 (3.13%) Oracle Database
13 18 (2.96%) Star Schema
14 17 (2.80%) Redis
15 16 (2.63%) SQL Server Reporting Services
16 15 (2.47%) SQL Server Analysis Services
Development Applications
1 53 (8.72%) Git (software)
2 51 (8.39%) JIRA
3 31 (5.10%) Jenkins
4 23 (3.78%) Visual Studio
5 20 (3.29%) webpack
6 19 (3.13%) JUnit
7 17 (2.80%) git-flow
7 17 (2.80%) Maven
8 15 (2.47%) Cucumber
8 15 (2.47%) SQL Server Management Studio (SSMS)
9 14 (2.30%) Mockito
9 14 (2.30%) TeamCity
10 12 (1.97%) Gradle
11 8 (1.32%) GitLab
11 8 (1.32%) Subversion
12 6 (0.99%) Concordion
12 6 (0.99%) JBehave
13 5 (0.82%) Babel
13 5 (0.82%) PHPUnit
13 5 (0.82%) Storybook
General
1 158 (25.99%) Finance
2 150 (24.67%) Social Skills
3 104 (17.11%) Banking
4 97 (15.95%) Analytical Skills
5 68 (11.18%) Front Office
6 58 (9.54%) Investment Banking
7 19 (3.13%) Public Sector
8 13 (2.14%) Legal
9 12 (1.97%) Telecoms
10 10 (1.64%) Retail
11 9 (1.48%) Influencing Skills
12 8 (1.32%) Organisational Skills
12 8 (1.32%) Presentation Skills
13 7 (1.15%) Marketing
14 6 (0.99%) Documentation Skills
14 6 (0.99%) German Language
15 5 (0.82%) French Language
16 4 (0.66%) Financial Institution
16 4 (0.66%) Italian Language
16 4 (0.66%) Pharmaceutical
Job Titles
1 316 (51.97%) Developer
2 122 (20.07%) Java Developer
3 63 (10.36%) Data Engineer
4 61 (10.03%) Analyst
5 52 (8.55%) Architect
6 50 (8.22%) C# Developer
7 37 (6.09%) Senior Developer
8 34 (5.59%) Business Analyst
8 34 (5.59%) Front Office Developer
9 32 (5.26%) Investment Banking Java Developer
10 29 (4.77%) Data Architect
10 29 (4.77%) Full Stack Developer
11 27 (4.44%) Quantitative Developer
11 27 (4.44%) React Developer
12 26 (4.28%) Senior Java Developer
13 23 (3.78%) C# Quant Developer
14 22 (3.62%) .NET Developer
15 21 (3.45%) Consultant
15 21 (3.45%) SQL Developer
16 20 (3.29%) Python Developer
Libraries, Frameworks & Software Standards
1 74 (12.17%) HTML
2 67 (11.02%) .NET
3 62 (10.20%) Kafka
4 61 (10.03%) REST
5 57 (9.38%) Spring
6 56 (9.21%) Web Services
7 46 (7.57%) CSS
8 44 (7.24%) React
9 43 (7.07%) .NET Core
10 40 (6.58%) AngularJS
11 39 (6.41%) FIX Protocol
12 37 (6.09%) JSON
13 34 (5.59%) XML
14 32 (5.26%) GraphQL
15 31 (5.10%) HTML5
15 31 (5.10%) Spring Boot
16 28 (4.61%) RESTful
17 24 (3.95%) Node.js
18 23 (3.78%) Redux
19 21 (3.45%) NumPy
Miscellaneous
1 181 (29.77%) Algorithms
2 77 (12.66%) Foreign Exchange (FX)
3 56 (9.21%) Greenfield Project
4 51 (8.39%) Derivative
5 48 (7.89%) User Experience
6 38 (6.25%) Management Information System
7 34 (5.59%) Enterprise Software
8 29 (4.77%) Hedge funds
9 25 (4.11%) Virtual Team
10 16 (2.63%) Cloud Native
11 14 (2.30%) Fixed Income
12 13 (2.14%) Self-Motivation
13 12 (1.97%) Clustering
14 10 (1.64%) CMDB
14 10 (1.64%) Reference Data
14 10 (1.64%) Taxonomies
15 8 (1.32%) Equities
16 7 (1.15%) Linux Command Line
17 6 (0.99%) Mobile App
18 5 (0.82%) Linked Data
Operating Systems
1 85 (13.98%) Linux
2 34 (5.59%) Unix
3 13 (2.14%) Windows
4 8 (1.32%) Android
4 8 (1.32%) Apple iOS
5 7 (1.15%) CentOS
6 6 (0.99%) Ubuntu
7 2 (0.33%) Mac OS
Processes & Methodologies
1 235 (38.65%) Agile Software Development
2 109 (17.93%) Multithreading
3 102 (16.78%) Analytics
4 100 (16.45%) Computer Science
5 95 (15.63%) ETL
6 93 (15.30%) DevOps
7 90 (14.80%) Problem-Solving
8 84 (13.82%) Business Intelligence
9 83 (13.65%) Software Engineering
10 77 (12.66%) Scrum
11 72 (11.84%) OO
12 71 (11.68%) Data Modelling
12 71 (11.68%) Performance Tuning
13 67 (11.02%) Microservices
14 59 (9.70%) Data Science
15 57 (9.38%) TDD
16 56 (9.21%) Data Pipeline
17 54 (8.88%) Data Management
17 54 (8.88%) Machine Learning
18 52 (8.55%) Low Latency
Programming Languages
1 235 (38.65%) SQL
2 187 (30.76%) Java
3 145 (23.85%) Python
4 97 (15.95%) C++
5 84 (13.82%) C#
6 81 (13.32%) JavaScript
7 70 (11.51%) Scala
8 39 (6.41%) PL/SQL
9 37 (6.09%) TypeScript
10 34 (5.59%) Java 8
11 22 (3.62%) R
12 19 (3.13%) T-SQL
13 14 (2.30%) ES6
14 12 (1.97%) Haskell
15 11 (1.81%) PowerShell
16 10 (1.64%) C
17 9 (1.48%) Go
18 8 (1.32%) Apple Swift
18 8 (1.32%) Groovy
18 8 (1.32%) MATLAB
Qualifications
1 64 (10.53%) Security Cleared
2 63 (10.36%) SC Cleared
3 52 (8.55%) Degree
4 31 (5.10%) Computer Science Degree
5 19 (3.13%) DV Cleared
6 9 (1.48%) Master's Degree
7 8 (1.32%) AWS Certification
7 8 (1.32%) PhD
8 5 (0.82%) SAS Certification
9 4 (0.66%) ISEB
10 3 (0.49%) BPSS Clearance
11 2 (0.33%) ACCA
11 2 (0.33%) CIMA
11 2 (0.33%) DBS Check
12 1 (0.16%) ISTQB
Quality Assurance & Compliance
1 47 (7.73%) Data Quality
2 37 (6.09%) QA
3 6 (0.99%) GDPR
4 4 (0.66%) IFRS
4 4 (0.66%) MiFID
4 4 (0.66%) Sarbanes-Oxley
5 2 (0.33%) Dodd-Frank
5 2 (0.33%) IFRS 9
6 1 (0.16%) Disclosure Scotland
6 1 (0.16%) ISO 20022
6 1 (0.16%) PCI DSS
6 1 (0.16%) WCAG
System Software
1 40 (6.58%) Docker
2 5 (0.82%) HDFS
3 4 (0.66%) Active Directory
3 4 (0.66%) ISA Server
4 3 (0.49%) Oracle RAC
5 1 (0.16%) Ceph
Systems Management
1 42 (6.91%) Kubernetes
2 35 (5.76%) Terraform
3 8 (1.32%) Prometheus
4 6 (0.99%) MIIS
4 6 (0.99%) Puppet
5 5 (0.82%) Ansible
6 4 (0.66%) Control-M
6 4 (0.66%) Istio
7 3 (0.49%) Data Guard
7 3 (0.49%) Opscode Chef
7 3 (0.49%) Oracle Enterprise Manager
7 3 (0.49%) Oracle RMAN
8 2 (0.33%) Kubeflow
9 1 (0.16%) Core Impact
9 1 (0.16%) Hadoop YARN
9 1 (0.16%) HP ALM
9 1 (0.16%) Oracle EDQ
Vendors
1 82 (13.49%) Oracle
2 54 (8.88%) Microsoft
3 46 (7.57%) Google
4 19 (3.13%) Salesforce.com
5 15 (2.47%) Databricks
6 13 (2.14%) SAP
6 13 (2.14%) Teradata
7 7 (1.15%) DevExpress
7 7 (1.15%) IBM
8 6 (0.99%) Apple
9 4 (0.66%) Adobe
9 4 (0.66%) Informatica
9 4 (0.66%) Marketo
9 4 (0.66%) Splunk
9 4 (0.66%) StreamSets
10 3 (0.49%) Cloudera
10 3 (0.49%) hybris
10 3 (0.49%) Kofax
10 3 (0.49%) Talend
10 3 (0.49%) Xerox