Period
to 19 November 2018

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 19 November 2018 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
19 Nov 2018
Same period 2017 Same period 2016
Rank 22 14 44
Rank change year-on-year -8 +30 -23
Contract jobs citing TDD 139 135 34
As % of all contract IT jobs advertised in Croydon 12.07% 16.13% 6.43%
As % of the Processes & Methodologies category 13.18% 17.37% 7.02%
Number of daily rates quoted 101 87 32
Croydon median daily rate £525 £525 £463
Median daily rate % change year-on-year - +13.51% +2.78%
10th Percentile £450 £417 £382
90th Percentile £588 £644 £594
South London median daily rate £525 £525 £500
% change year-on-year - +5.00% +15.94%
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 1,055 777 484
As % of all contract IT jobs advertised in Croydon 91.58% 92.83% 91.49%
Number of daily rates quoted 797 508 299
Croydon median daily rate £525 £500 £425
Median daily rate % change year-on-year +5.00% +17.65% -
10th Percentile £375 £337 £300
90th Percentile £625 £638 £575
South London median daily rate £513 £500 £425
% change year-on-year +2.50% +17.65% +13.33%
Number of hourly rates quoted 4 3 6
Croydon median hourly rate £35.00 £13.50 £35.25
Median hourly rate % change year-on-year +159.26% -61.70% +26.89%
South London median hourly rate £42.27 £47.50 £27.00
% change year-on-year -11.02% +75.93% -2.81%

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 19 November 2018.

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 19 November 2018. 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 19 November 2018, 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.

1 124 (89.21%) Java
2 118 (84.89%) Agile Software Development
3 85 (61.15%) Amazon AWS
4 83 (59.71%) Jenkins
5 80 (57.55%) Continuous Integration
6 67 (48.20%) BDD
7 60 (43.17%) PostgreSQL
8 54 (38.85%) Web Services
9 52 (37.41%) Git (software)
10 50 (35.97%) OO
11 49 (35.25%) Scrum
11 49 (35.25%) Spring
12 48 (34.53%) RESTful
12 48 (34.53%) Ansible
13 47 (33.81%) Maven
14 46 (33.09%) Apache Camel
15 44 (31.65%) Spring Boot
15 44 (31.65%) Kanban
15 44 (31.65%) Security Cleared
16 42 (30.22%) SC Cleared
16 42 (30.22%) NoSQL
17 41 (29.50%) JUnit
18 40 (28.78%) Tomcat
19 39 (28.06%) Oracle
19 39 (28.06%) SOAP
19 39 (28.06%) J2EE
19 39 (28.06%) Mockito
19 39 (28.06%) GitHub
19 39 (28.06%) GitLab
19 39 (28.06%) Java 8

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 40 (28.78%) Tomcat
2 38 (27.34%) WebLogic
3 36 (25.90%) OpenStack
3 36 (25.90%) WebSphere
4 19 (13.67%) Confluence
5 15 (10.79%) Apache Solr
6 12 (8.63%) Apache Spark
6 12 (8.63%) Elasticsearch
7 3 (2.16%) Apache
7 3 (2.16%) JBoss
8 2 (1.44%) Oracle Service Bus
9 1 (0.72%) CMS
9 1 (0.72%) WildFly
Applications
1 2 (1.44%) Photoshop
Cloud Services
1 85 (61.15%) Amazon AWS
2 39 (28.06%) GitHub
3 38 (27.34%) Microsoft Azure
4 31 (22.30%) Amazon EC2
5 1 (0.72%) Amazon SQS
5 1 (0.72%) Cloud Computing
5 1 (0.72%) Google Cloud Platform
5 1 (0.72%) IaaS
5 1 (0.72%) npm
5 1 (0.72%) PaaS
5 1 (0.72%) Trello
Communications & Networking
1 13 (9.35%) Kerberos
2 1 (0.72%) Skype
Database & Business Intelligence
1 60 (43.17%) PostgreSQL
2 42 (30.22%) NoSQL
3 37 (26.62%) MySQL
4 22 (15.83%) Big Data
4 22 (15.83%) HBase
5 15 (10.79%) Hadoop
6 4 (2.88%) Amazon Redshift
6 4 (2.88%) MongoDB
7 3 (2.16%) Data Warehouse
8 2 (1.44%) Oracle Database
8 2 (1.44%) Redis
9 1 (0.72%) RDBMS
9 1 (0.72%) Relational Database
Development Applications
1 83 (59.71%) Jenkins
2 52 (37.41%) Git (software)
3 47 (33.81%) Maven
4 41 (29.50%) JUnit
5 39 (28.06%) GitLab
5 39 (28.06%) Mockito
6 37 (26.62%) DbUnit
6 37 (26.62%) jMock
6 37 (26.62%) SonarQube
7 36 (25.90%) MSTest
7 36 (25.90%) NUnit
8 20 (14.39%) JIRA
9 13 (9.35%) IntelliJ
10 12 (8.63%) Cucumber
11 6 (4.32%) Grunt
12 5 (3.60%) Jasmine
12 5 (3.60%) Karma Test Runner
13 2 (1.44%) Gradle
13 2 (1.44%) Selenium
14 1 (0.72%) JMeter
General
1 4 (2.88%) Retail
2 2 (1.44%) Finance
2 2 (1.44%) Games
3 1 (0.72%) Electronics
3 1 (0.72%) Manufacturing
3 1 (0.72%) Marketing
3 1 (0.72%) Telecoms
Job Titles
1 124 (89.21%) Developer
2 107 (76.98%) Java Developer
3 11 (7.91%) SC Cleared Java Developer
4 9 (6.47%) J2EE Developer
4 9 (6.47%) Java/J2EE Developer
5 7 (5.04%) Front End Developer (Client-Side Developer)
6 6 (4.32%) Big Data Developer
7 4 (2.88%) Agile Developer
7 4 (2.88%) Agile Java Developer
7 4 (2.88%) Java Team Leader
7 4 (2.88%) Lead Developer
7 4 (2.88%) Lead Java Developer
7 4 (2.88%) Senior Developer
7 4 (2.88%) Team Leader
8 3 (2.16%) Backend Developer
8 3 (2.16%) BPM Developer
8 3 (2.16%) Scala Developer
8 3 (2.16%) Scrum Master
8 3 (2.16%) Senior Java Developer
9 2 (1.44%) Node.js Developer
Libraries, Frameworks & Software Standards
1 54 (38.85%) Web Services
2 49 (35.25%) Spring
3 48 (34.53%) RESTful
4 46 (33.09%) Apache Camel
5 44 (31.65%) Spring Boot
6 39 (28.06%) J2EE
6 39 (28.06%) SOAP
7 37 (26.62%) PowerMock
8 27 (19.42%) Kafka
9 25 (17.99%) REST
10 12 (8.63%) HTML
11 11 (7.91%) CSS
11 11 (7.91%) JSON
12 10 (7.19%) Drools
12 10 (7.19%) Hibernate
13 9 (6.47%) AngularJS
14 8 (5.76%) CSS3
14 8 (5.76%) HTML5
15 7 (5.04%) JSON Schema
15 7 (5.04%) Samza
Miscellaneous
1 10 (7.19%) Greenfield Project
2 9 (6.47%) Algorithms
3 5 (3.60%) User Experience
4 4 (2.88%) NHS
5 2 (1.44%) PKI
6 1 (0.72%) Cloud Native
Operating Systems
1 16 (11.51%) Linux
Processes & Methodologies
1 118 (84.89%) Agile Software Development
2 80 (57.55%) Continuous Integration
3 67 (48.20%) BDD
4 50 (35.97%) OO
5 49 (35.25%) Scrum
6 44 (31.65%) Kanban
7 37 (26.62%) E-Commerce
8 36 (25.90%) Microservices
9 29 (20.86%) Virtual Infrastructure
10 22 (15.83%) Open Source
11 18 (12.95%) Mentoring
12 17 (12.23%) DevOps
13 15 (10.79%) Coaching
13 15 (10.79%) Test Automation
14 12 (8.63%) Problem-Solving
15 11 (7.91%) Systems Engineering
16 10 (7.19%) Data Architecture
17 9 (6.47%) Data Development
18 7 (5.04%) Pair Programming
19 6 (4.32%) Software Engineering
Programming Languages
1 124 (89.21%) Java
2 39 (28.06%) Java 8
3 20 (14.39%) JavaScript
4 5 (3.60%) Groovy
4 5 (3.60%) SQL
5 4 (2.88%) Scala
6 2 (1.44%) C#
7 1 (0.72%) Gremlin
Qualifications
1 44 (31.65%) Security Cleared
2 42 (30.22%) SC Cleared
3 2 (1.44%) DBS Check
3 2 (1.44%) DV Cleared
4 1 (0.72%) BPSS Clearance
4 1 (0.72%) CTC Cleared
Quality Assurance & Compliance
1 3 (2.16%) PMO
2 1 (0.72%) Disclosure Scotland
2 1 (0.72%) QA
System Software
1 31 (22.30%) vSphere
2 29 (20.86%) VMware Infrastructure
3 28 (20.14%) Docker
4 10 (7.19%) HDFS
Systems Management
1 48 (34.53%) Ansible
2 37 (26.62%) Opscode Chef
2 37 (26.62%) Puppet
3 18 (12.95%) Kubernetes
4 16 (11.51%) Terraform
Vendors
1 39 (28.06%) Oracle
2 31 (22.30%) VMware
3 2 (1.44%) Adobe
3 2 (1.44%) Red Hat
3 2 (1.44%) SAP
4 1 (0.72%) Hyland
4 1 (0.72%) Microsoft