Data Structures Contracts

Data Structures
UK

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 cited Data Structures over the 6 months leading up to 30 April 2025, comparing them to the same period in the previous two years.

6 months to
30 Apr 2025
Same period 2024 Same period 2023
Rank 252 302 319
Rank change year-on-year +50 +17 -49
Contract jobs citing Data Structures 311 332 474
As % of all contract jobs advertised in the UK 1.06% 0.76% 0.79%
As % of the Miscellaneous category 3.14% 2.51% 2.38%
Number of daily rates quoted 208 231 325
10th Percentile £350 £385 £411
25th Percentile £425 £450 £500
Median daily rate (50th Percentile) £525 £550 £575
Median % change year-on-year -4.55% -4.35% -8.00%
75th Percentile £638 £700 £749
90th Percentile £738 £775 £921
UK excluding London median daily rate £510 £500 £550
% change year-on-year +2.00% -9.09% +10.00%
Number of hourly rates quoted 1 3 6
10th Percentile - £40.10 £18.88
25th Percentile £43.25 £40.25 £27.44
Median hourly rate £44.50 £40.50 £57.72
Median % change year-on-year +9.88% -29.83% +243.16%
75th Percentile £45.75 £55.25 £79.19
90th Percentile - £64.10 -
UK excluding London median hourly rate - £40.25 £79.19
% change year-on-year - -49.17% +370.81%

All Generic Skills
UK

Data Structures falls under the General and Transferable Skills category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring generic IT skills.

Contract vacancies with a requirement for generic IT skills 9,915 13,252 19,898
As % of all contract IT jobs advertised in the UK 33.91% 30.40% 33.34%
Number of daily rates quoted 6,331 8,505 13,670
10th Percentile £300 £263 £308
25th Percentile £413 £413 £450
Median daily rate (50th Percentile) £525 £538 £550
Median % change year-on-year -2.42% -2.18% -
75th Percentile £650 £660 £680
90th Percentile £775 £788 £800
UK excluding London median daily rate £496 £500 £500
% change year-on-year -0.90% - +5.26%
Number of hourly rates quoted 394 910 640
10th Percentile £16.46 £12.25 £9.80
25th Percentile £21.00 £15.17 £10.63
Median hourly rate £32.05 £30.00 £22.49
Median % change year-on-year +6.83% +33.42% -18.24%
75th Percentile £63.75 £60.66 £65.00
90th Percentile £82.99 £70.00 £75.00
UK excluding London median hourly rate £30.93 £27.75 £22.00
% change year-on-year +11.46% +26.14% +9.64%

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 30 April 2025.

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 18 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 30 April 2025. 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 +23 237 £545 -3.11% 372
London +12 142 £575 -11.54% 253
UK excluding London +82 141 £510 +2.00% 159
Work from Home +29 125 £550 -8.33% 173
Scotland +39 48 £508 +26.88% 23
Midlands +32 31 £505 -13.12% 21
North of England +9 26 £390 -29.09% 27
West Midlands +21 25 £500 -5.88% 15
South East +59 24 £584 +3.78% 40
North West -7 14 £489 -9.12% 13
Yorkshire +14 9 £275 -56.69% 3
East of England +29 7 £490 +5.95% 20
East Midlands +14 6 £545 -14.51% 6
Northern Ireland -6 4 £500 - 6
North East -3 3 £335 +1.52% 11
South West +34 2 £588 +11.90% 17
Wales +6 2 £453 +158.91% 6
Channel Islands - 1 - -

Data Structures
Co-occurring Skills and Capabilities by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 17 (5.47%) Confluence
2 14 (4.50%) Apache Spark
3 10 (3.22%) Apache
4 8 (2.57%) Jupyter
5 3 (0.96%) SAS
6 2 (0.64%) Apache Airflow
6 2 (0.64%) Oracle SOA Suite
6 2 (0.64%) Oracle Workflow
7 1 (0.32%) ArcGIS
7 1 (0.32%) CMS
7 1 (0.32%) Mattermost
7 1 (0.32%) OpenStack
7 1 (0.32%) Umbraco
Applications
1 13 (4.18%) Microsoft Excel
2 3 (0.96%) Microsoft Office
3 2 (0.64%) Maya
3 2 (0.64%) MS Visio
3 2 (0.64%) NUKE
4 1 (0.32%) Adobe Captivate
4 1 (0.32%) Microsoft PowerPoint
Business Applications
1 14 (4.50%) SAP S/4HANA
2 8 (2.57%) Sparx Enterprise Architect
3 6 (1.93%) Dynamics CRM
4 3 (0.96%) Aladdin
4 3 (0.96%) Oracle EBS
4 3 (0.96%) Shopify
5 2 (0.64%) Exstream
5 2 (0.64%) Magento
5 2 (0.64%) NetSuite
5 2 (0.64%) Oracle Retail
5 2 (0.64%) SAP CX
6 1 (0.32%) CA PPM
6 1 (0.32%) Dynamics AX
6 1 (0.32%) NEC Housing
6 1 (0.32%) Oracle iRecruitment
6 1 (0.32%) SAP MDG
6 1 (0.32%) Temenos T24
Cloud Services
1 49 (15.76%) Azure
2 36 (11.58%) Power Platform
3 35 (11.25%) AWS
4 22 (7.07%) GCP
5 9 (2.89%) Dynamics 365
5 9 (2.89%) Snowflake
6 8 (2.57%) GitHub
7 6 (1.93%) Amazon S3
7 6 (1.93%) Serverless
8 5 (1.61%) Azure Data Factory
8 5 (1.61%) Azure DevOps
8 5 (1.61%) SaaS
9 4 (1.29%) AWS Lambda
9 4 (1.29%) Power Automate
10 3 (0.96%) Amazon Cognito
10 3 (0.96%) Amazon SQS
10 3 (0.96%) dbt
10 3 (0.96%) PowerApps
11 2 (0.64%) Microsoft 365
11 2 (0.64%) Salesforce Commerce Cloud
Communications & Networking
1 7 (2.25%) SSH
2 3 (0.96%) HTTP
3 2 (0.64%) Intrusion Detection
3 2 (0.64%) TCP/IP
4 1 (0.32%) Unified Communications
Database & Business Intelligence
1 58 (18.65%) Relational Database
2 43 (13.83%) DB2
2 43 (13.83%) MongoDB
3 32 (10.29%) Power BI
4 25 (8.04%) Data Warehouse
5 17 (5.47%) SQL Server
6 16 (5.14%) PostgreSQL
7 15 (4.82%) NoSQL
7 15 (4.82%) Tableau
8 8 (2.57%) Azure SQL Database
8 8 (2.57%) BigQuery
8 8 (2.57%) Metadata
8 8 (2.57%) Snowflake Schema
9 7 (2.25%) Apache Hive
9 7 (2.25%) Delta Lake
10 6 (1.93%) MySQL
10 6 (1.93%) RDBMS
11 5 (1.61%) BusinessObjects
11 5 (1.61%) Oracle Database
12 4 (1.29%) DynamoDB
Development Applications
1 48 (15.43%) JUnit
2 33 (10.61%) Git
3 24 (7.72%) JIRA
4 12 (3.86%) ERwin
4 12 (3.86%) Selenium
5 8 (2.57%) Jenkins
5 8 (2.57%) Postman
6 7 (2.25%) PowerDesigner
7 6 (1.93%) Gradle
7 6 (1.93%) RStudio
8 5 (1.61%) IntelliJ
8 5 (1.61%) Maven
9 4 (1.29%) Bitbucket
9 4 (1.29%) CA Release Automation
9 4 (1.29%) Cypress.io
9 4 (1.29%) ER Studio
9 4 (1.29%) GitLab
9 4 (1.29%) HP UFT
9 4 (1.29%) NetBeans
9 4 (1.29%) Subversion
General
1 134 (43.09%) Social Skills
2 107 (34.41%) Analytical Skills
3 99 (31.83%) Finance
4 46 (14.79%) Banking
5 30 (9.65%) Investment Banking
6 23 (7.40%) Front Office
7 11 (3.54%) Financial Institution
7 11 (3.54%) Public Sector
7 11 (3.54%) Retail
8 7 (2.25%) Marketing
9 5 (1.61%) Manufacturing
9 5 (1.61%) Pharmaceutical
10 4 (1.29%) Presentation Skills
11 3 (0.96%) Automotive
11 3 (0.96%) Inclusion and Diversity
11 3 (0.96%) Law
11 3 (0.96%) Organisational Skills
12 2 (0.64%) Influencing Skills
12 2 (0.64%) Legal
12 2 (0.64%) Telecoms
Job Titles
1 98 (31.51%) Developer
2 61 (19.61%) Java Developer
3 49 (15.76%) Analyst
4 37 (11.90%) Architect
5 33 (10.61%) Senior
6 31 (9.97%) Data Analyst
7 29 (9.32%) Data Engineer
8 24 (7.72%) Data Architect
9 23 (7.40%) SQL Developer
10 20 (6.43%) Lead
11 18 (5.79%) Investment Banking Java Developer
11 18 (5.79%) Senior Developer
12 17 (5.47%) Consultant
13 16 (5.14%) Software Engineer
14 15 (4.82%) Data Modeller
15 14 (4.50%) Linux Developer
15 14 (4.50%) Senior Java Developer
16 13 (4.18%) Business Analyst
17 11 (3.54%) Senior Investment Banking Java Developer
17 11 (3.54%) Senior SQL Developer
Libraries, Frameworks & Software Standards
1 51 (16.40%) Spring
2 49 (15.76%) Kafka
3 35 (11.25%) JMS
4 22 (7.07%) REST
5 20 (6.43%) JSON
6 15 (4.82%) HTML
7 14 (4.50%) CSS
8 13 (4.18%) SOAP
9 12 (3.86%) PySpark
9 12 (3.86%) Web Services
10 10 (3.22%) React
10 10 (3.22%) Spring Boot
11 9 (2.89%) Middleware
11 9 (2.89%) Node.js
11 9 (2.89%) YAML
12 8 (2.57%) HTML5
13 7 (2.25%) .NET
13 7 (2.25%) J2EE
13 7 (2.25%) pydantic
13 7 (2.25%) XML
Miscellaneous
1 49 (15.76%) Algorithms
2 31 (9.97%) Equities
3 18 (5.79%) Legacy Systems
4 14 (4.50%) Enterprise Software
5 13 (4.18%) Distributed Systems
6 12 (3.86%) Reference Data
7 11 (3.54%) Product Ownership
8 10 (3.22%) Linux Command Line
9 9 (2.89%) Hedge funds
10 7 (2.25%) IoT
11 6 (1.93%) Blockchain
11 6 (1.93%) Derivative
12 5 (1.61%) Fixed Income
12 5 (1.61%) Onboarding
13 4 (1.29%) Clustering
13 4 (1.29%) Data Protection Act
13 4 (1.29%) Self-Motivation
14 3 (0.96%) Greenfield Project
14 3 (0.96%) Vector Graphics
14 3 (0.96%) Virtual Team
Operating Systems
1 69 (22.19%) Linux
2 6 (1.93%) Unix
3 5 (1.61%) Android
4 2 (0.64%) Windows
5 1 (0.32%) Apple iOS
5 1 (0.32%) Mac OS
5 1 (0.32%) Red Hat Enterprise Linux
5 1 (0.32%) VMS
Processes & Methodologies
1 120 (38.59%) Problem-Solving
2 112 (36.01%) Agile
3 81 (26.05%) Data Modelling
4 59 (18.97%) ETL
5 57 (18.33%) Migration
6 49 (15.76%) SDLC
7 44 (14.15%) Multithreading
8 43 (13.83%) Software Engineering
9 42 (13.50%) Computer Science
9 42 (13.50%) Data Analysis
9 42 (13.50%) Data Migration
10 41 (13.18%) Analytics
11 40 (12.86%) Performance Tuning
12 38 (12.22%) Data Governance
12 38 (12.22%) Open Source
13 31 (9.97%) CI/CD
13 31 (9.97%) Data Architecture
14 30 (9.65%) Business Intelligence
14 30 (9.65%) Data Management
15 29 (9.32%) Database Tuning
Programming Languages
1 151 (48.55%) SQL
2 106 (34.08%) Python
3 95 (30.55%) Java
4 39 (12.54%) Shell Script
5 34 (10.93%) JavaScript
6 14 (4.50%) TypeScript
7 12 (3.86%) C++
8 11 (3.54%) Bash
9 10 (3.22%) Scala
10 7 (2.25%) C#
10 7 (2.25%) PL/SQL
10 7 (2.25%) R
11 6 (1.93%) ABAP
11 6 (1.93%) C
11 6 (1.93%) Kotlin
12 4 (1.29%) Data Analysis Expressions
13 3 (0.96%) Go
13 3 (0.96%) PowerShell
14 2 (0.64%) Rust
14 2 (0.64%) T-SQL
Qualifications
1 36 (11.58%) Degree
2 28 (9.00%) Security Cleared
3 24 (7.72%) SC Cleared
4 21 (6.75%) Computer Science Degree
5 13 (4.18%) Master's Degree
6 3 (0.96%) AWS Certification
6 3 (0.96%) BPSS Clearance
7 2 (0.64%) AWS Certified Cloud Practitioner
7 2 (0.64%) MBA
8 1 (0.32%) ACCA
8 1 (0.32%) CIMA
8 1 (0.32%) DV Cleared
8 1 (0.32%) Microsoft Certification
8 1 (0.32%) PhD
8 1 (0.32%) PMI Certification
8 1 (0.32%) PMP
Quality Assurance & Compliance
1 37 (11.90%) Data Quality
2 18 (5.79%) GDPR
3 14 (4.50%) QA
4 9 (2.89%) Accessibility
5 7 (2.25%) Disclosure Scotland
6 3 (0.96%) NIST
7 2 (0.64%) HIPAA
7 2 (0.64%) IFRS
7 2 (0.64%) IFRS 9
7 2 (0.64%) PCI DSS
7 2 (0.64%) Sarbanes-Oxley
8 1 (0.32%) NCSC
System Software
1 8 (2.57%) Docker
2 1 (0.32%) Virtual Machines
Systems Management
1 7 (2.25%) Kubernetes
2 5 (1.61%) Progress Chef
3 4 (1.29%) Ansible
3 4 (1.29%) Puppet
4 2 (0.64%) Terraform
5 1 (0.32%) Cobbler
5 1 (0.32%) Prometheus
Vendors
1 38 (12.22%) Sybase
2 31 (9.97%) Microsoft
3 30 (9.65%) SAP
4 26 (8.36%) Oracle
5 14 (4.50%) Databricks
6 11 (3.54%) Google
7 10 (3.22%) Salesforce
8 8 (2.57%) Foundry
8 8 (2.57%) Palantir
8 8 (2.57%) Sparx
8 8 (2.57%) Talend
9 5 (1.61%) CA Agile Central
9 5 (1.61%) IBM
10 4 (1.29%) Denodo
10 4 (1.29%) Informatica
10 4 (1.29%) ServiceNow
11 3 (0.96%) Adobe
11 3 (0.96%) IDERA
11 3 (0.96%) MuleSoft
11 3 (0.96%) Workday