Period
to 22 January 2019

The following table provides summary statistics for contract job vacancies advertised in Croydon with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 22 January 2019 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.

Test-Driven Development (TDD)
South London > Croydon
6 months to
22 Jan 2019
Same period 2018 Same period 2017
Rank 24 22 43
Rank change year-on-year -2 +21 -28
Contract jobs citing TDD 117 95 27
As % of all contract IT jobs advertised in Croydon 11.44% 9.23% 5.47%
As % of the Processes & Methodologies category 12.02% 9.93% 5.93%
Number of daily rates quoted 95 68 26
Croydon median daily rate £525 £500 £463
Median daily rate % change year-on-year +5.00% +8.11% +12.12%
10th Percentile £459 £383 £406
90th Percentile £595 £608 £594
South London median daily rate £525 £525 £501
% change year-on-year - +4.90% +23.20%
Number of hourly rates quoted 1 0 0
Croydon median hourly rate £35.00 - -
South London median hourly rate £35.00 - -

TDD 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 Croydon with a requirement for process or methodology skills.

All Process and Methodology Skills
Croydon
Contract vacancies with a requirement for process or methodology skills 973 957 455
As % of all contract IT jobs advertised in Croydon 95.11% 93.00% 92.11%
Number of daily rates quoted 741 655 275
Croydon median daily rate £525 £500 £438
Median daily rate % change year-on-year +5.00% +14.29% +2.94%
10th Percentile £381 £354 £311
90th Percentile £600 £675 £575
South London median daily rate £514 £500 £425
% change year-on-year +2.80% +17.65% +6.25%
Number of hourly rates quoted 6 1 1
Croydon median hourly rate £35.00 £13.50 £43.50
Median hourly rate % change year-on-year +159.26% -68.97% +248.00%
South London median hourly rate £43.75 £47.83 £42.00
% change year-on-year -8.53% +13.88% +100.00%

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
Contractor Daily Rate Trend in Croydon

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Croydon.

Contractor daily rate trend for TDD in Croydon

TDD
Contractor Daily Rate Histogram in Croydon

The daily rate distribution of IT jobs citing TDD in Croydon over the 6 months to 22 January 2019.

Contractor daily rate histogram for TDD in Croydon

TDD
Contract Job Locations in Croydon

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Croydon region over the 6 months to 22 January 2019. 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
Thornton Heath - 1 £450 -
TDD
South London

For the 6 months to 22 January 2019, IT contractor jobs citing TDD 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 Croydon region with a requirement for TDD.

1 108 (92.31%) Java
2 107 (91.45%) Agile Software Development
3 82 (70.09%) Amazon AWS
4 80 (68.38%) Jenkins
5 76 (64.96%) Continuous Integration
6 65 (55.56%) BDD
7 59 (50.43%) Git (software)
7 59 (50.43%) Web Services
8 56 (47.86%) RESTful
9 54 (46.15%) Maven
10 52 (44.44%) Spring
11 51 (43.59%) Scrum
12 49 (41.88%) Apache Camel
12 49 (41.88%) Spring Boot
13 48 (41.03%) JUnit
13 48 (41.03%) Kanban
14 46 (39.32%) Mockito
14 46 (39.32%) SOAP
15 45 (38.46%) J2EE
16 44 (37.61%) E-Commerce
16 44 (37.61%) DbUnit
16 44 (37.61%) jMock
16 44 (37.61%) PowerMock
16 44 (37.61%) SonarQube
17 42 (35.90%) PostgreSQL
18 41 (35.04%) VMware
18 41 (35.04%) Amazon EC2
18 41 (35.04%) vSphere
19 39 (33.33%) VMware Infrastructure
19 39 (33.33%) Virtual Infrastructure

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 28 (23.93%) Tomcat
2 27 (23.08%) WebLogic
3 25 (21.37%) OpenStack
3 25 (21.37%) WebSphere
4 11 (9.40%) Confluence
4 11 (9.40%) Elasticsearch
5 8 (6.84%) Apache Solr
6 6 (5.13%) Apache Spark
7 3 (2.56%) Apache
7 3 (2.56%) JBoss
8 2 (1.71%) Oracle Service Bus
8 2 (1.71%) WildFly
9 1 (0.85%) CMS
Applications
1 1 (0.85%) Photoshop
Cloud Services
1 82 (70.09%) Amazon AWS
2 41 (35.04%) Amazon EC2
3 31 (26.50%) GitHub
4 28 (23.93%) Microsoft Azure
5 1 (0.85%) Amazon SQS
5 1 (0.85%) Cloud Computing
5 1 (0.85%) Google Cloud Platform
Communications & Networking
1 7 (5.98%) Kerberos
2 1 (0.85%) Skype
Database & Business Intelligence
1 42 (35.90%) PostgreSQL
2 31 (26.50%) NoSQL
3 26 (22.22%) MySQL
4 15 (12.82%) Big Data
5 14 (11.97%) HBase
6 8 (6.84%) Hadoop
7 4 (3.42%) MongoDB
8 3 (2.56%) Amazon Redshift
9 2 (1.71%) Data Warehouse
9 2 (1.71%) Oracle Database
9 2 (1.71%) Redis
10 1 (0.85%) RDBMS
10 1 (0.85%) Relational Database
Development Applications
1 80 (68.38%) Jenkins
2 59 (50.43%) Git (software)
3 54 (46.15%) Maven
4 48 (41.03%) JUnit
5 46 (39.32%) Mockito
6 44 (37.61%) DbUnit
6 44 (37.61%) jMock
6 44 (37.61%) SonarQube
7 30 (25.64%) GitLab
8 25 (21.37%) MSTest
8 25 (21.37%) NUnit
9 12 (10.26%) JIRA
10 7 (5.98%) Cucumber
10 7 (5.98%) IntelliJ
11 2 (1.71%) Gerrit
11 2 (1.71%) Gradle
11 2 (1.71%) Selenium
12 1 (0.85%) Grunt
12 1 (0.85%) Jasmine
12 1 (0.85%) JMeter
General
1 3 (2.56%) Retail
2 1 (0.85%) Finance
2 1 (0.85%) Games
Job Titles
1 105 (89.74%) Developer
2 92 (78.63%) Java Developer
3 7 (5.98%) J2EE Developer
3 7 (5.98%) Java/J2EE Developer
4 6 (5.13%) Agile Developer
4 6 (5.13%) Big Data Developer
5 5 (4.27%) Java Team Leader
5 5 (4.27%) Team Leader
6 4 (3.42%) Agile Java Developer
6 4 (3.42%) Lead Developer
6 4 (3.42%) Lead Java Developer
6 4 (3.42%) Node.js Developer
7 3 (2.56%) AWS Developer
7 3 (2.56%) Backend Developer
7 3 (2.56%) Front End Developer (Client-Side Developer)
7 3 (2.56%) SC Cleared Java Developer
7 3 (2.56%) Scala Developer
7 3 (2.56%) Senior Developer
7 3 (2.56%) Tester
8 2 (1.71%) Software Engineer
Libraries, Frameworks & Software Standards
1 59 (50.43%) Web Services
2 56 (47.86%) RESTful
3 52 (44.44%) Spring
4 49 (41.88%) Apache Camel
4 49 (41.88%) Spring Boot
5 46 (39.32%) SOAP
6 45 (38.46%) J2EE
7 44 (37.61%) PowerMock
8 20 (17.09%) Kafka
9 16 (13.68%) REST
10 10 (8.55%) JSON
11 9 (7.69%) Hibernate
12 8 (6.84%) HTML
13 7 (5.98%) CSS
14 6 (5.13%) JSON Schema
14 6 (5.13%) Samza
15 5 (4.27%) Node.js
16 4 (3.42%) Drools
16 4 (3.42%) JMS
17 3 (2.56%) JPA
Miscellaneous
1 23 (19.66%) Greenfield Project
2 3 (2.56%) NHS
3 2 (1.71%) Algorithms
3 2 (1.71%) PKI
4 1 (0.85%) Analytical Skills
Operating Systems
1 9 (7.69%) Linux
Processes & Methodologies
1 107 (91.45%) Agile Software Development
2 76 (64.96%) Continuous Integration
3 65 (55.56%) BDD
4 51 (43.59%) Scrum
5 48 (41.03%) Kanban
6 44 (37.61%) E-Commerce
7 39 (33.33%) Virtual Infrastructure
8 33 (28.21%) OO
8 33 (28.21%) Open Source
9 27 (23.08%) Microservices
10 14 (11.97%) DevOps
11 10 (8.55%) Test Automation
12 9 (7.69%) Mentoring
13 8 (6.84%) Coaching
13 8 (6.84%) Software Engineering
14 6 (5.13%) Pair Programming
15 5 (4.27%) MVC
15 5 (4.27%) Project Management
16 4 (3.42%) Data Architecture
16 4 (3.42%) Performance Testing
Programming Languages
1 108 (92.31%) Java
2 30 (25.64%) Java 8
3 15 (12.82%) JavaScript
4 7 (5.98%) SQL
5 4 (3.42%) Groovy
6 3 (2.56%) Scala
7 2 (1.71%) C#
8 1 (0.85%) Gremlin
8 1 (0.85%) TypeScript
Qualifications
1 27 (23.08%) Security Cleared
2 25 (21.37%) SC Cleared
3 2 (1.71%) BPSS Clearance
3 2 (1.71%) DBS Check
4 1 (0.85%) CTC Cleared
Quality Assurance & Compliance
1 2 (1.71%) Disclosure Scotland
1 2 (1.71%) PMO
2 1 (0.85%) QA
System Software
1 41 (35.04%) vSphere
2 39 (33.33%) VMware Infrastructure
3 21 (17.95%) Docker
4 4 (3.42%) HDFS
Systems Management
1 30 (25.64%) Ansible
2 25 (21.37%) Opscode Chef
2 25 (21.37%) Puppet
3 14 (11.97%) Kubernetes
4 10 (8.55%) Terraform
Vendors
1 41 (35.04%) VMware
2 28 (23.93%) Oracle
3 2 (1.71%) Red Hat
4 1 (0.85%) Adobe
4 1 (0.85%) Hyland
4 1 (0.85%) Microsoft
4 1 (0.85%) SAP