Period
to 24 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Croydon with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 6 months to 24 November 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
South London > Croydon
6 months to
24 Nov 2017
Same period 2016 Same period 2015
Rank 17 37 49
Rank change year-on-year +20 +12 -18
Permanent jobs citing TDD 35 23 15
As % of all permanent IT jobs advertised in Croydon 10.00% 5.35% 3.75%
As % of the Processes & Methodologies category 11.55% 6.59% 4.41%
Number of salaries quoted 16 21 43
Croydon median annual salary £65,000 £47,500 £50,000
Median salary % change year-on-year +36.84% -5.00% -2.44%
10th Percentile £55,000 £35,000 £43,750
90th Percentile £84,375 £63,750 £62,500
South London median annual salary £55,000 £50,000 £50,000
% change year-on-year +10.00% - -

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Croydon with a requirement for process or methodology skills.

All Process and Methodology Skills
Croydon
Permanent vacancies with a requirement for process or methodology skills 303 349 340
As % of all permanent IT jobs advertised in Croydon 86.57% 81.16% 85.00%
Number of salaries quoted 237 315 312
Croydon median annual salary £52,500 £50,000 £45,000
Median salary % change year-on-year +5.00% +11.11% +5.88%
10th Percentile £26,150 £25,950 £24,000
90th Percentile £77,250 £70,250 £60,000
South London median annual salary £47,500 £48,000 £45,000
% change year-on-year -1.04% +6.67% -

TDD
Job Vacancy Trend in Croydon

Job postings citing TDD as a percentage of all IT jobs advertised in Croydon.

Job vacancy trend for TDD in Croydon

TDD
Salary Trend in Croydon

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD in Croydon.

Salary trend for TDD in Croydon

TDD
Salary Histogram in Croydon

The salary distribution of IT jobs citing TDD in Croydon over the 6 months to 24 November 2017.

Salary histogram for TDD in Croydon

For the 6 months to 24 November 2017, IT jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Croydon region with a requirement for TDD.

1 29 (82.86%) Agile Software Development
1 29 (82.86%) Continuous Integration
2 28 (80.00%) Scrum
3 27 (77.14%) Java
4 21 (60.00%) Kanban
5 20 (57.14%) REST
6 19 (54.29%) BDD
7 17 (48.57%) Spring
8 16 (45.71%) Test Automation
9 15 (42.86%) SOAP
9 15 (42.86%) Microservices
10 14 (40.00%) JUnit
10 14 (40.00%) Web Services
10 14 (40.00%) Jenkins
10 14 (40.00%) User Stories
11 13 (37.14%) Continuous Improvement
11 13 (37.14%) PostgreSQL
12 12 (34.29%) Apache Camel
12 12 (34.29%) Mentoring
12 12 (34.29%) Git (software)
13 11 (31.43%) Feature Driven Development
13 11 (31.43%) Coaching
13 11 (31.43%) ATDD
13 11 (31.43%) J2EE
13 11 (31.43%) Games
14 10 (28.57%) XML
14 10 (28.57%) OO
14 10 (28.57%) jMock
14 10 (28.57%) Maven
14 10 (28.57%) PowerMock

TDD
Co-occurring IT Skills in Croydon 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 8 (22.86%) Apache
1 8 (22.86%) Tomcat
2 5 (14.29%) Apache Solr
2 5 (14.29%) Apache Spark
2 5 (14.29%) Confluence
Cloud Services
1 4 (11.43%) GitHub
2 2 (5.71%) Amazon AWS
2 2 (5.71%) SaaS
Communications & Networking
1 5 (14.29%) Kerberos
Database & Business Intelligence
1 13 (37.14%) PostgreSQL
2 7 (20.00%) Big Data
3 5 (14.29%) Hadoop
3 5 (14.29%) HBase
4 3 (8.57%) NoSQL
5 2 (5.71%) Amazon DynamoDB
5 2 (5.71%) DataStax
Development Applications
1 14 (40.00%) Jenkins
1 14 (40.00%) JUnit
2 12 (34.29%) Git (software)
3 10 (28.57%) Cucumber
3 10 (28.57%) DbUnit
3 10 (28.57%) jMock
3 10 (28.57%) Maven
3 10 (28.57%) Mockito
3 10 (28.57%) SonarQube
4 5 (14.29%) JIRA
4 5 (14.29%) Selenium
5 4 (11.43%) FitNesse
5 4 (11.43%) Hudson
5 4 (11.43%) NUnit
6 2 (5.71%) IntelliJ
7 1 (2.86%) Gradle
7 1 (2.86%) Jasmine
7 1 (2.86%) Karma Test Runner
7 1 (2.86%) Protractor
7 1 (2.86%) WebDriver
General
1 11 (31.43%) Games
2 3 (8.57%) Electronics
2 3 (8.57%) Finance
2 3 (8.57%) Manufacturing
2 3 (8.57%) Marketing
2 3 (8.57%) Telecoms
3 1 (2.86%) Advertising
Job Titles
1 17 (48.57%) Developer
2 14 (40.00%) Java Developer
3 12 (34.29%) Scrum Master
4 6 (17.14%) Agile Developer
4 6 (17.14%) Agile Java Developer
5 5 (14.29%) BPM Developer
6 3 (8.57%) Big Data Engineer
6 3 (8.57%) Data Engineer
6 3 (8.57%) Hadoop Engineer
7 2 (5.71%) Automation Tester
7 2 (5.71%) Big Data Developer
7 2 (5.71%) Developer in Test
7 2 (5.71%) Java Scrum Master
7 2 (5.71%) Senior Automation Tester
7 2 (5.71%) Senior Tester
7 2 (5.71%) Tester
8 1 (2.86%) Senior Developer
8 1 (2.86%) Senior Java Developer
8 1 (2.86%) Senior Software Engineer
8 1 (2.86%) Software Engineer
Libraries, Frameworks & Software Standards
1 20 (57.14%) REST
2 17 (48.57%) Spring
3 15 (42.86%) SOAP
4 14 (40.00%) Web Services
5 12 (34.29%) Apache Camel
6 11 (31.43%) J2EE
7 10 (28.57%) PowerMock
7 10 (28.57%) RESTful
7 10 (28.57%) XML
8 8 (22.86%) Spring Boot
9 5 (14.29%) Drools
9 5 (14.29%) Kafka
10 4 (11.43%) Apache CXF
11 3 (8.57%) .NET
12 2 (5.71%) HTML
12 2 (5.71%) React
12 2 (5.71%) Samza
12 2 (5.71%) TinkerPop
13 1 (2.86%) Angular 2
13 1 (2.86%) RESTEasy
Miscellaneous
1 4 (11.43%) Analytical Skills
2 3 (8.57%) Algorithms
3 2 (5.71%) Mobile App
Processes & Methodologies
1 29 (82.86%) Agile Software Development
1 29 (82.86%) Continuous Integration
2 28 (80.00%) Scrum
3 21 (60.00%) Kanban
4 19 (54.29%) BDD
5 16 (45.71%) Test Automation
6 15 (42.86%) Microservices
7 14 (40.00%) User Stories
8 13 (37.14%) Continuous Improvement
9 12 (34.29%) Mentoring
10 11 (31.43%) ATDD
10 11 (31.43%) Coaching
10 11 (31.43%) Feature Driven Development
11 10 (28.57%) OO
12 9 (25.71%) E-Commerce
13 5 (14.29%) Business Intelligence
13 5 (14.29%) Data Architecture
14 4 (11.43%) Build Automation
14 4 (11.43%) Open Source
14 4 (11.43%) Test Strategy
Programming Languages
1 27 (77.14%) Java
2 3 (8.57%) JavaScript
3 2 (5.71%) Python
3 2 (5.71%) Scala
4 1 (2.86%) Groovy
4 1 (2.86%) PHP
4 1 (2.86%) SQL
Qualifications
1 9 (25.71%) Security Cleared
2 8 (22.86%) SC Cleared
Quality Assurance & Compliance
1 4 (11.43%) QA
System Software
1 5 (14.29%) Apache ZooKeeper
1 5 (14.29%) Docker
1 5 (14.29%) HDFS
Systems Management
1 5 (14.29%) Ansible
1 5 (14.29%) Kubernetes
1 5 (14.29%) Terraform
Vendors
1 3 (8.57%) SAP
2 2 (5.71%) Hortonworks
2 2 (5.71%) Oracle