Period
to 28 September 2021

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Unit Testing skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Unit Testing over the 6 months to 28 September 2021 with a comparison to the same period in 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.

Unit Testing
Central London > City of London
6 months to
28 Sep 2021
Same period 2020 Same period 2019
Rank 104 82 115
Rank change year-on-year -22 +33 -5
Contract jobs citing Unit Testing 65 35 127
As % of all contract jobs advertised in the City of London 1.75% 1.97% 2.07%
As % of the Processes & Methodologies category 1.93% 2.21% 2.28%
Number of daily rates quoted 50 25 79
10th Percentile £425 " £410
25th Percentile £463 £469 £473
Median daily rate (50th Percentile) £544 £545 £550
Median % change year-on-year -0.23% -0.91% +4.76%
75th Percentile £632 £604 £625
90th Percentile £655 £635 £675
Central London median daily rate £538 £548 £525
% change year-on-year -1.83% +4.29% +2.44%

Unit Testing is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 3,364 1,583 5,568
As % of all contract IT jobs advertised in the City of London 90.63% 89.03% 90.76%
Number of daily rates quoted 2,505 1,163 4,407
10th Percentile £363 £313 £338
25th Percentile £463 £414 £425
Median daily rate (50th Percentile) £550 £513 £525
Median % change year-on-year +7.32% -2.38% +3.96%
75th Percentile £650 £600 £600
90th Percentile £738 £675 £675
Central London median daily rate £550 £513 £520
% change year-on-year +7.32% -1.44% +4.00%
Number of hourly rates quoted 39 31 65
10th Percentile £10.80 £15.00 £11.25
25th Percentile £15.71 £18.75 £12.04
Median hourly rate £28.00 £35.50 £16.50
Median % change year-on-year -21.13% +115.15% -11.76%
75th Percentile £39.75 £46.88 £23.75
90th Percentile £63.75 £52.50 £46.03
Central London median hourly rate £25.50 £34.50 £19.25
% change year-on-year -26.09% +79.22% +2.94%

Unit Testing
Job Vacancy Trend in the City of London

Job postings citing Unit Testing as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for Unit Testing in the City of London

Unit Testing
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing Unit Testing in the City of London.

Daily rate trend for Unit Testing in the City of London

Unit Testing
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing Unit Testing in the City of London over the 6 months to 28 September 2021.

Daily rate histogram for Unit Testing in the City of London

Unit Testing
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing Unit Testing in the City of London.

Hourly rate trend for Unit Testing in the City of London

For the 6 months to 28 September 2021, IT contractor jobs citing Unit Testing 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 City of London region with a requirement for Unit Testing.

1 36 (55.38%) TDD
2 33 (50.77%) Agile Software Development
3 25 (38.46%) React
4 23 (35.38%) Continuous Integration
4 23 (35.38%) JavaScript
5 20 (30.77%) Docker
6 19 (29.23%) DevOps
7 16 (24.62%) Node.js
7 16 (24.62%) SQL
8 15 (23.08%) Scrum
9 14 (21.54%) HTML
9 14 (21.54%) AngularJS
9 14 (21.54%) TypeScript
9 14 (21.54%) Redux
10 13 (20.00%) CSS
11 12 (18.46%) Oracle
11 12 (18.46%) NoSQL
12 11 (16.92%) Git (software)
12 11 (16.92%) Front End Development
12 11 (16.92%) C#
12 11 (16.92%) .NET
12 11 (16.92%) Finance
13 10 (15.38%) Java
13 10 (15.38%) Python
13 10 (15.38%) Pair Programming
13 10 (15.38%) Web Development
13 10 (15.38%) RESTful
14 9 (13.85%) AWS
14 9 (13.85%) Full Stack Development
15 8 (12.31%) JUnit

Unit Testing
Co-occurring IT Skills in the City of London 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 4 (6.15%) Oracle SOA Suite
2 3 (4.62%) Apache Spark
3 1 (1.54%) Apache
3 1 (1.54%) Confluence
3 1 (1.54%) IBM HTTP Server
Applications
1 1 (1.54%) Microsoft Excel
Business Applications
1 1 (1.54%) CA PPM
Cloud Services
1 9 (13.85%) AWS
2 7 (10.77%) Azure
3 6 (9.23%) GitHub
4 2 (3.08%) Amazon CloudWatch
5 1 (1.54%) Amazon S3
5 1 (1.54%) Cloud Computing
5 1 (1.54%) CloudFront
5 1 (1.54%) npm
5 1 (1.54%) OpenShift
5 1 (1.54%) Power Platform
5 1 (1.54%) Route 53
5 1 (1.54%) Slack
Communications & Networking
1 1 (1.54%) Kerberos
Database & Business Intelligence
1 12 (18.46%) NoSQL
2 7 (10.77%) SQL Server
3 6 (9.23%) MongoDB
4 3 (4.62%) Big Data
4 3 (4.62%) Couchbase
5 2 (3.08%) Oracle Database
6 1 (1.54%) Data Warehouse
6 1 (1.54%) Power BI
6 1 (1.54%) SQL Server Integration Services
6 1 (1.54%) SQL Server Reporting Services
6 1 (1.54%) Tableau
6 1 (1.54%) Tableau Desktop
6 1 (1.54%) Tableau Server
Development Applications
1 11 (16.92%) Git (software)
2 8 (12.31%) Atlassian Bamboo
2 8 (12.31%) Jenkins
2 8 (12.31%) JUnit
3 7 (10.77%) JSUnit
3 7 (10.77%) Mockito
4 6 (9.23%) Jasmine
4 6 (9.23%) Karma Test Runner
4 6 (9.23%) TeamCity
5 4 (6.15%) Gatling
5 4 (6.15%) Team Foundation Server
6 3 (4.62%) NUnit
6 3 (4.62%) Postman
6 3 (4.62%) Subversion
7 2 (3.08%) Codeship
7 2 (3.08%) Cucumber
7 2 (3.08%) IBM UrbanCode
7 2 (3.08%) JIRA
7 2 (3.08%) Maven
7 2 (3.08%) Visual Studio
General
1 11 (16.92%) Finance
2 6 (9.23%) Banking
2 6 (9.23%) Investment Banking
3 5 (7.69%) Social Skills
4 4 (6.15%) Analytical Skills
5 3 (4.62%) Front Office
5 3 (4.62%) Retail
6 2 (3.08%) International Banking
6 2 (3.08%) Public Sector
7 1 (1.54%) Military
7 1 (1.54%) Organisational Skills
7 1 (1.54%) Police
Job Titles
1 55 (84.62%) Developer
2 11 (16.92%) Front End Developer (Client-Side Developer)
3 9 (13.85%) Java Developer
4 8 (12.31%) .NET Developer
4 8 (12.31%) Senior Developer
5 7 (10.77%) C# Developer
5 7 (10.77%) JavaScript Developer
5 7 (10.77%) React Developer
6 6 (9.23%) Agile Developer
6 6 (9.23%) Agile Java Developer
6 6 (9.23%) C# .NET Developer
6 6 (9.23%) DevOps Developer
7 4 (6.15%) Angular Developer
7 4 (6.15%) Full Stack Developer
7 4 (6.15%) Python Developer
7 4 (6.15%) Scala Developer
8 3 (4.62%) C# WPF Developer
8 3 (4.62%) Lead Developer
8 3 (4.62%) Node.js Developer
8 3 (4.62%) Senior .NET Developer
Libraries, Frameworks & Software Standards
1 25 (38.46%) React
2 16 (24.62%) Node.js
3 14 (21.54%) AngularJS
3 14 (21.54%) HTML
3 14 (21.54%) Redux
4 13 (20.00%) CSS
5 11 (16.92%) .NET
6 10 (15.38%) RESTful
7 8 (12.31%) Spring
8 7 (10.77%) .NET Framework
8 7 (10.77%) Web Services
9 6 (9.23%) Hibernate
9 6 (9.23%) Jest
9 6 (9.23%) jQuery
10 5 (7.69%) GraphQL
10 5 (7.69%) HTML5
10 5 (7.69%) WPF
11 4 (6.15%) LESS
11 4 (6.15%) Sass
11 4 (6.15%) Unity DI Container
Miscellaneous
1 4 (6.15%) Management Information System
2 3 (4.62%) Derivative
2 3 (4.62%) Equity Derivative
2 3 (4.62%) Market Risk
3 2 (3.08%) Algorithms
3 2 (3.08%) Client/Server
3 2 (3.08%) Data Structures
3 2 (3.08%) Public Cloud
3 2 (3.08%) User Experience
3 2 (3.08%) Video on Demand
3 2 (3.08%) Virtual Team
4 1 (1.54%) Credit Risk
4 1 (1.54%) Enterprise Software
4 1 (1.54%) Foreign Exchange (FX)
4 1 (1.54%) Greenfield Project
4 1 (1.54%) Legacy Applications
4 1 (1.54%) Legacy Systems
4 1 (1.54%) N-Tier
Operating Systems
1 3 (4.62%) Linux
2 2 (3.08%) Windows
3 1 (1.54%) Unix
3 1 (1.54%) VMS
Processes & Methodologies
1 36 (55.38%) TDD
2 33 (50.77%) Agile Software Development
3 23 (35.38%) Continuous Integration
4 19 (29.23%) DevOps
5 15 (23.08%) Scrum
6 11 (16.92%) Front End Development
7 10 (15.38%) Pair Programming
7 10 (15.38%) Web Development
8 9 (13.85%) Full Stack Development
9 8 (12.31%) BDD
9 8 (12.31%) Kanban
9 8 (12.31%) Microservices
10 7 (10.77%) Continuous Delivery
10 7 (10.77%) Release Management
11 6 (9.23%) E-Commerce
11 6 (9.23%) SEO
11 6 (9.23%) SOA
12 5 (7.69%) Acceptance Criteria
12 5 (7.69%) Clean Code
13 4 (6.15%) Problem-Solving
Programming Languages
1 23 (35.38%) JavaScript
2 16 (24.62%) SQL
3 14 (21.54%) TypeScript
4 11 (16.92%) C#
5 10 (15.38%) Java
5 10 (15.38%) Python
6 6 (9.23%) PL/SQL
6 6 (9.23%) Scala
7 3 (4.62%) ES6
8 2 (3.08%) PowerShell
8 2 (3.08%) Ruby
9 1 (1.54%) Go
9 1 (1.54%) Java 8
9 1 (1.54%) JSX
9 1 (1.54%) T-SQL
9 1 (1.54%) VB
9 1 (1.54%) VBA
Qualifications
1 4 (6.15%) Security Cleared
2 3 (4.62%) SC Cleared
3 1 (1.54%) BPSS Clearance
3 1 (1.54%) CTC Cleared
3 1 (1.54%) Degree
3 1 (1.54%) Numerate Degree
Quality Assurance & Compliance
1 6 (9.23%) QA
2 4 (6.15%) Accessibility
3 2 (3.08%) WCAG
System Software
1 20 (30.77%) Docker
Systems Management
1 7 (10.77%) Kubernetes
2 6 (9.23%) Ansible
3 4 (6.15%) Grafana
3 4 (6.15%) Prometheus
4 2 (3.08%) Terraform
Vendors
1 12 (18.46%) Oracle
2 3 (4.62%) Splunk
3 2 (3.08%) IBM
3 2 (3.08%) Microsoft
3 2 (3.08%) Rollbar
4 1 (1.54%) Murex
4 1 (1.54%) TIBCO