Period
to 2 March 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 2 March 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
2 Mar 2021
Same period 2020 Same period 2019
Rank 252 301 309
Rank change year-on-year +49 +8 -1
Contract jobs citing Data Structures 484 544 840
As % of all contract jobs advertised in the UK 1.01% 0.82% 0.86%
As % of the Miscellaneous category 3.00% 2.59% 2.69%
Number of daily rates quoted 387 347 565
Median daily rate £525 £515 £501
Median daily rate % change year-on-year +2.04% +2.80% +5.37%
10th Percentile £337 £357 £363
90th Percentile £700 £700 £725
UK excluding London median daily rate £458 £475 £450
% change year-on-year -3.68% +5.56% +2.27%
Number of hourly rates quoted 8 11 5
Median hourly rate £42.50 £42.50 £39.50
Median hourly rate % change year-on-year - +7.59% -15.05%
10th Percentile £32.83 £26.65 £37.09
90th Percentile £61.48 £73.75 £42.19
UK excluding London median hourly rate £57.50 £41.25 £39.50
% change year-on-year +39.39% +4.43% -15.05%

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 16,146 21,002 31,252
As % of all contract IT jobs advertised in the UK 33.59% 31.57% 31.88%
Number of daily rates quoted 10,791 13,594 20,810
Median daily rate £475 £463 £475
Median daily rate % change year-on-year +2.70% -2.63% +5.56%
10th Percentile £256 £230 £275
90th Percentile £688 £675 £663
UK excluding London median daily rate £420 £425 £425
% change year-on-year -1.18% - +6.25%
Number of hourly rates quoted 660 895 991
Median hourly rate £26.00 £22.50 £20.25
Median hourly rate % change year-on-year +15.56% +11.14% -3.60%
10th Percentile £12.45 £12.44 £11.85
90th Percentile £58.75 £53.00 £48.75
Median hourly rate £23.81 £20.50 £20.00
% change year-on-year +16.16% +2.50% -

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 2 March 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
Hourly Rate Histogram

Hourly rate distribution of jobs citing Data Structures over the 6 months to 2 March 2021.

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 2 March 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 +47 411 £550 +5.97% 222
London +35 288 £575 +4.55% 139
UK excluding London +73 131 £458 -3.68% 92
Work from Home -135 111 £500 +25.00% 91
South East +51 42 £482 -3.70% 29
North of England +70 22 £440 -9.79% 26
Scotland +36 17 £438 +9.38% 6
South West +63 16 £444 -4.57% 7
North West +37 13 £477 -4.55% 15
East of England +28 11 £450 +2.86% 9
Midlands +41 10 £475 +69.04% 11
Northern Ireland +16 9 - - 2
Yorkshire +43 8 £418 +19.29% 11
West Midlands +38 8 £500 -2.44% 7
Wales +11 4 £488 +4.84% 2
East Midlands +22 2 £318 +15.45% 4
North East +32 1 £500 +11.11%

For the 6 months to 2 March 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.

1 194 (40.08%) Agile Software Development
2 162 (33.47%) SQL
3 149 (30.79%) Java
4 142 (29.34%) Algorithms
5 126 (26.03%) Finance
6 110 (22.73%) Python
7 94 (19.42%) Analytical Skills
8 89 (18.39%) Analytics
9 86 (17.77%) Azure
10 82 (16.94%) AWS
11 76 (15.70%) Computer Science
11 76 (15.70%) Multithreading
12 74 (15.29%) Banking
12 74 (15.29%) Data Warehouse
13 72 (14.88%) Data Modelling
13 72 (14.88%) Business Intelligence
14 71 (14.67%) Microsoft
15 69 (14.26%) OO
15 69 (14.26%) DevOps
15 69 (14.26%) Problem-Solving
16 64 (13.22%) JavaScript
17 61 (12.60%) C++
17 61 (12.60%) Software Engineering
18 59 (12.19%) ETL
19 56 (11.57%) Web Services
20 52 (10.74%) Spring
20 52 (10.74%) Scrum
21 50 (10.33%) C#
21 50 (10.33%) User Experience
22 49 (10.12%) HTML

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 45 (9.30%) Apache Spark
2 17 (3.51%) Apache Airflow
3 15 (3.10%) SharePoint
4 12 (2.48%) WebLogic
4 12 (2.48%) WebSphere
5 7 (1.45%) Confluence
5 7 (1.45%) SAS
6 6 (1.24%) Elasticsearch
7 5 (1.03%) Apache
7 5 (1.03%) CMS
7 5 (1.03%) Tomcat
8 4 (0.83%) Apache Qpid
9 2 (0.41%) IIS
9 2 (0.41%) Jupyter
9 2 (0.41%) Luigi
9 2 (0.41%) Oracle Coherence
9 2 (0.41%) Oracle Workflow
10 1 (0.21%) Apache Pig
10 1 (0.21%) IBM Domino
10 1 (0.21%) Mule
Applications
1 30 (6.20%) Microsoft Excel
2 17 (3.51%) Microsoft Office
3 11 (2.27%) Microsoft PowerPoint
4 3 (0.62%) MS Visio
4 3 (0.62%) SPSS
Business Applications
1 11 (2.27%) Dynamics CRM
2 4 (0.83%) SAP APO
3 2 (0.41%) NetSuite
3 2 (0.41%) Payment Gateway
3 2 (0.41%) Primavera
4 1 (0.21%) Dynamics GP
4 1 (0.21%) Magento
4 1 (0.21%) Maximo
4 1 (0.21%) Oracle EBS
4 1 (0.21%) Salesforce.com CRM
4 1 (0.21%) SAP HCM
4 1 (0.21%) SAP HR
4 1 (0.21%) SAP MDM
4 1 (0.21%) SAP MM
4 1 (0.21%) SAP SD
4 1 (0.21%) Workday HCM
Cloud Services
1 86 (17.77%) Azure
2 82 (16.94%) AWS
3 34 (7.02%) Power Platform
4 22 (4.55%) GitHub
5 20 (4.13%) AWS CloudFormation
6 16 (3.31%) Cloud Computing
6 16 (3.31%) GCP
7 13 (2.69%) Amazon S3
8 12 (2.48%) Amazon Kinesis
9 11 (2.27%) Dynamics 365
9 11 (2.27%) Serverless
10 10 (2.07%) Google Analytics
10 10 (2.07%) PaaS
11 9 (1.86%) Heroku
12 8 (1.65%) Amazon ECS
13 7 (1.45%) IaaS
13 7 (1.45%) SaaS
14 6 (1.24%) Azure Data Factory
14 6 (1.24%) Google Play
15 3 (0.62%) Salesforce Service Cloud
Communications & Networking
1 24 (4.96%) HTTP
2 4 (0.83%) SSL
3 3 (0.62%) Internet
4 1 (0.21%) OpenVPN
4 1 (0.21%) Skype
4 1 (0.21%) WebEx
Database & Business Intelligence
1 74 (15.29%) Data Warehouse
2 45 (9.30%) Big Data
2 45 (9.30%) NoSQL
2 45 (9.30%) SQL Server
3 40 (8.26%) Relational Database
4 34 (7.02%) Power BI
5 33 (6.82%) Tableau
6 31 (6.40%) Data Lake
7 27 (5.58%) PostgreSQL
8 22 (4.55%) Oracle Database
8 22 (4.55%) Snowflake Schema
9 17 (3.51%) Hadoop
10 13 (2.69%) Parquet
10 13 (2.69%) SQL Server Integration Services
11 12 (2.48%) Oracle BI EE
11 12 (2.48%) RDBMS
11 12 (2.48%) Redis
12 11 (2.27%) Star Schema
13 10 (2.07%) Oracle ODI
13 10 (2.07%) SQL Server Reporting Services
Development Applications
1 42 (8.68%) Git (software)
2 38 (7.85%) Jenkins
3 37 (7.64%) JIRA
4 21 (4.34%) git-flow
4 21 (4.34%) JUnit
5 19 (3.93%) Maven
6 18 (3.72%) Gradle
6 18 (3.72%) Visual Studio
7 17 (3.51%) Mockito
8 16 (3.31%) SQL Server Management Studio (SSMS)
9 14 (2.89%) Ant
10 13 (2.69%) webpack
11 12 (2.48%) JMeter
12 10 (2.07%) Cucumber
13 8 (1.65%) Subversion
13 8 (1.65%) TeamCity
14 7 (1.45%) GitLab
15 6 (1.24%) ERwin
16 5 (1.03%) Android Studio
16 5 (1.03%) ER Studio
General
1 126 (26.03%) Finance
2 74 (15.29%) Banking
3 44 (9.09%) Investment Banking
4 42 (8.68%) Front Office
5 19 (3.93%) Retail
6 15 (3.10%) Public Sector
7 10 (2.07%) Telecoms
8 9 (1.86%) Manufacturing
8 9 (1.86%) Pharmaceutical
9 8 (1.65%) Marketing
10 5 (1.03%) Financial Institution
11 3 (0.62%) Legal
12 2 (0.41%) Advertising
12 2 (0.41%) Games
12 2 (0.41%) Publishing
12 2 (0.41%) Retail Banking
13 1 (0.21%) Electronics
13 1 (0.21%) Law
13 1 (0.21%) Local Government
13 1 (0.21%) Military
Job Titles
1 236 (48.76%) Developer
2 81 (16.74%) Java Developer
3 55 (11.36%) Analyst
4 43 (8.88%) Data Engineer
5 40 (8.26%) Architect
6 30 (6.20%) Senior Developer
7 27 (5.58%) Business Analyst
7 27 (5.58%) C# Developer
7 27 (5.58%) Data Architect
8 20 (4.13%) Front Office Developer
8 20 (4.13%) Python Developer
9 19 (3.93%) Consultant
9 19 (3.93%) Quantitative Developer
10 17 (3.51%) Investment Banking Java Developer
10 17 (3.51%) Senior Java Developer
11 16 (3.31%) React Developer
12 14 (2.89%) Full Stack Developer
13 13 (2.69%) Python Engineer
13 13 (2.69%) Software Engineer
13 13 (2.69%) SQL Developer
Libraries, Frameworks & Software Standards
1 56 (11.57%) Web Services
2 52 (10.74%) Spring
3 49 (10.12%) HTML
4 45 (9.30%) REST
5 42 (8.68%) Kafka
6 41 (8.47%) JSON
7 40 (8.26%) React
8 38 (7.85%) XML
9 33 (6.82%) .NET
10 32 (6.61%) RESTful
11 30 (6.20%) AngularJS
12 29 (5.99%) CSS
13 28 (5.79%) FIX Protocol
13 28 (5.79%) Redux
14 26 (5.37%) HTML5
15 23 (4.75%) Spring Boot
16 19 (3.93%) .NET Core
16 19 (3.93%) NumPy
17 17 (3.51%) SOAP
18 16 (3.31%) GraphQL
Miscellaneous
1 142 (29.34%) Algorithms
2 94 (19.42%) Analytical Skills
3 50 (10.33%) User Experience
4 39 (8.06%) Foreign Exchange (FX)
5 36 (7.44%) Enterprise Software
6 35 (7.23%) Greenfield Project
7 23 (4.75%) Derivative
8 19 (3.93%) Management Information System
9 16 (3.31%) Virtual Team
10 14 (2.89%) Hedge funds
10 14 (2.89%) Self-Motivation
11 13 (2.69%) Mobile App
12 12 (2.48%) Mobile Payment
13 11 (2.27%) Clustering
14 10 (2.07%) Reference Data
15 9 (1.86%) Cloud Native
16 8 (1.65%) Credit Risk
17 7 (1.45%) Equities
18 6 (1.24%) Fixed Income
19 5 (1.03%) Contract for Difference
Operating Systems
1 48 (9.92%) Linux
2 16 (3.31%) Unix
3 8 (1.65%) Android
3 8 (1.65%) Windows
4 6 (1.24%) Apple iOS
5 3 (0.62%) CentOS
6 2 (0.41%) Mac OS
6 2 (0.41%) Ubuntu
Processes & Methodologies
1 194 (40.08%) Agile Software Development
2 89 (18.39%) Analytics
3 76 (15.70%) Computer Science
3 76 (15.70%) Multithreading
4 72 (14.88%) Business Intelligence
4 72 (14.88%) Data Modelling
5 69 (14.26%) DevOps
5 69 (14.26%) OO
5 69 (14.26%) Problem-Solving
6 61 (12.60%) Software Engineering
7 59 (12.19%) ETL
8 52 (10.74%) Scrum
9 44 (9.09%) Machine Learning
9 44 (9.09%) Multithreaded Programming
9 44 (9.09%) SDLC
10 43 (8.88%) TDD
11 42 (8.68%) Microservices
12 41 (8.47%) Performance Tuning
13 40 (8.26%) Test Automation
14 39 (8.06%) Data Analysis
Programming Languages
1 162 (33.47%) SQL
2 149 (30.79%) Java
3 110 (22.73%) Python
4 64 (13.22%) JavaScript
5 61 (12.60%) C++
6 50 (10.33%) C#
7 38 (7.85%) Scala
8 20 (4.13%) Java 8
9 18 (3.72%) R
10 17 (3.51%) PL/SQL
10 17 (3.51%) TypeScript
11 16 (3.31%) Kotlin
12 15 (3.10%) T-SQL
13 14 (2.89%) C
14 13 (2.69%) ES6
15 7 (1.45%) Apple Swift
15 7 (1.45%) Objective-C
15 7 (1.45%) PowerShell
16 6 (1.24%) Apex Code
16 6 (1.24%) Shell Script
Qualifications
1 31 (6.40%) Degree
2 29 (5.99%) Security Cleared
3 26 (5.37%) SC Cleared
4 24 (4.96%) Computer Science Degree
5 12 (2.48%) PhD
6 9 (1.86%) Master's Degree
7 3 (0.62%) AWS Certification
7 3 (0.62%) ISEB
8 2 (0.41%) BPSS Clearance
8 2 (0.41%) Numerate Degree
9 1 (0.21%) DBS Check
9 1 (0.21%) ISTQB
Quality Assurance & Compliance
1 30 (6.20%) QA
2 29 (5.99%) Data Quality
3 3 (0.62%) GDPR
3 3 (0.62%) IFRS
4 2 (0.41%) Dodd-Frank
4 2 (0.41%) IFRS 9
4 2 (0.41%) MiFID
4 2 (0.41%) Sarbanes-Oxley
System Software
1 27 (5.58%) Docker
2 3 (0.62%) Oracle RAC
3 2 (0.41%) Apache ZooKeeper
3 2 (0.41%) etcd
3 2 (0.41%) HDFS
3 2 (0.41%) Varnish
4 1 (0.21%) Ceph
4 1 (0.21%) ISA Server
Systems Management
1 32 (6.61%) Kubernetes
2 18 (3.72%) Terraform
3 8 (1.65%) Puppet
4 7 (1.45%) Ansible
5 5 (1.03%) Opscode Chef
6 3 (0.62%) Data Guard
6 3 (0.62%) Istio
6 3 (0.62%) MIIS
6 3 (0.62%) Oracle Enterprise Manager
6 3 (0.62%) Oracle RMAN
6 3 (0.62%) Prometheus
7 2 (0.41%) Consul
8 1 (0.21%) Hadoop YARN
8 1 (0.21%) HP ALM
8 1 (0.21%) Oracle EDQ
8 1 (0.21%) Rundeck
8 1 (0.21%) Single Sign-On
Vendors
1 71 (14.67%) Microsoft
2 47 (9.71%) Oracle
3 30 (6.20%) Google
4 18 (3.72%) SAP
5 12 (2.48%) Salesforce.com
6 9 (1.86%) Databricks
7 6 (1.24%) Apple
7 6 (1.24%) Informatica
8 4 (0.83%) Alteryx
9 3 (0.62%) Kofax
9 3 (0.62%) Sparx
9 3 (0.62%) Splunk
10 2 (0.41%) Black Duck
10 2 (0.41%) Blue Prism
10 2 (0.41%) CA Agile Central
10 2 (0.41%) IBM
10 2 (0.41%) Teradata
11 1 (0.21%) MuleSoft
11 1 (0.21%) Rackspace
11 1 (0.21%) Talend