Period
to 21 May 2018

The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Jest skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Jest over the 6 months to 21 May 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.

Jest
England > London
6 months to
21 May 2018
Same period 2017 Same period 2016
Rank 486 555 595
Rank change year-on-year +69 +40 -
Contract jobs citing Jest 147 9 4
As % of all contract IT jobs advertised in London 0.32% 0.023% 0.009%
As % of the Libraries, Frameworks & Software Standards category 0.88% 0.065% 0.029%
Number of daily rates quoted 122 4 3
London median daily rate £500 £445 £550
Median daily rate % change year-on-year +12.36% -19.09% -
10th Percentile £425 £348 £405
90th Percentile £594 £490 £610
England median daily rate £500 £425 £550
% change year-on-year +17.65% -22.73% -
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate - - -

Jest is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 16,648 13,861 13,972
As % of all contract IT jobs advertised in London 36.50% 35.25% 32.23%
Number of daily rates quoted 12,737 10,330 10,531
London median daily rate £500 £475 £458
Median daily rate % change year-on-year +5.26% +3.83% +5.17%
10th Percentile £363 £328 £313
90th Percentile £656 £638 £638
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +6.25%
Number of hourly rates quoted 116 85 67
London median hourly rate £44.21 £45.00 £42.50
Median hourly rate % change year-on-year -1.76% +5.88% +55.28%
10th Percentile £20.98 £19.45 £18.62
90th Percentile £65.00 £57.50 £76.00
England median hourly rate £42.50 £41.00 £38.00
% change year-on-year +3.66% +7.89% +8.57%

Jest
Job Vacancy Trend in London

Job postings citing Jest as a percentage of all IT jobs advertised in London.

Job vacancy trend for Jest in London

Jest
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Jest in London

Jest
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Jest in London over the 6 months to 21 May 2018.

Contractor daily rate histogram for Jest in London

Jest
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Jest within the London region over the 6 months to 21 May 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
Central London - 27 £500 - 18
West London - 3 £475 - 10
South London - 2 £600 -
Jest
England

For the 6 months to 21 May 2018, IT contractor jobs citing Jest 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 London region with a requirement for Jest.

1 126 (85.71%) JavaScript
2 102 (69.39%) CSS
2 102 (69.39%) Redux
3 91 (61.90%) React
4 86 (58.50%) Agile Software Development
5 85 (57.82%) HTML
6 82 (55.78%) webpack
7 79 (53.74%) Node.js
8 61 (41.50%) ES6
8 61 (41.50%) Mocha
9 58 (39.46%) Jasmine
10 57 (38.78%) TDD
11 56 (38.10%) Front End Development
11 56 (38.10%) Enzyme
12 52 (35.37%) Sass
13 46 (31.29%) AngularJS
14 44 (29.93%) HTML5
15 41 (27.89%) CSS3
16 40 (27.21%) Git (software)
17 38 (25.85%) Amazon AWS
18 37 (25.17%) Mobile App
18 37 (25.17%) User Experience
19 36 (24.49%) RESTful
20 34 (23.13%) Chai
21 32 (21.77%) gulp
22 30 (20.41%) Responsive Web Design
22 30 (20.41%) BDD
23 28 (19.05%) Unit Testing
23 28 (19.05%) Express
23 28 (19.05%) npm

Jest
Co-occurring IT Skills in 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 3 (2.04%) Confluence
2 2 (1.36%) Gunicorn
3 1 (0.68%) Apache Solr
3 1 (0.68%) Apache Spark
3 1 (0.68%) Cloud Foundry
3 1 (0.68%) CMS
3 1 (0.68%) Elasticsearch
3 1 (0.68%) Mule
3 1 (0.68%) OpenStack
3 1 (0.68%) Tomcat
Applications
1 1 (0.68%) Chatbot
1 1 (0.68%) Photoshop
Cloud Services
1 38 (25.85%) Amazon AWS
2 28 (19.05%) npm
3 15 (10.20%) Serverless
4 12 (8.16%) Microsoft Azure
5 11 (7.48%) Amazon S3
5 11 (7.48%) Amazon SQS
6 3 (2.04%) AWS Lambda
6 3 (2.04%) GitHub
6 3 (2.04%) Google Cloud Platform
6 3 (2.04%) Twilio
7 2 (1.36%) Yarn
8 1 (0.68%) BrowserStack
8 1 (0.68%) Google Analytics
8 1 (0.68%) IaaS
8 1 (0.68%) PaaS
8 1 (0.68%) Slack
Communications & Networking
1 12 (8.16%) HTTP
2 3 (2.04%) Skype
Database & Business Intelligence
1 25 (17.01%) PostgreSQL
2 18 (12.24%) MySQL
3 14 (9.52%) NoSQL
4 13 (8.84%) MongoDB
5 11 (7.48%) Amazon DynamoDB
5 11 (7.48%) Blockchain
6 5 (3.40%) Big Data
7 3 (2.04%) Apache Cassandra
7 3 (2.04%) CouchDB
7 3 (2.04%) Redis
8 1 (0.68%) Amazon Redshift
8 1 (0.68%) Apache Hive
8 1 (0.68%) Hadoop
8 1 (0.68%) HBase
8 1 (0.68%) Sqoop
Development Applications
1 82 (55.78%) webpack
2 61 (41.50%) Mocha
3 58 (39.46%) Jasmine
4 40 (27.21%) Git (software)
5 32 (21.77%) gulp
6 27 (18.37%) Grunt
7 26 (17.69%) Babel
8 23 (15.65%) Jenkins
8 23 (15.65%) Selenium
9 14 (9.52%) Cucumber
9 14 (9.52%) PhantomJS
10 10 (6.80%) Sinon.JS
11 9 (6.12%) Protractor
11 9 (6.12%) Sonatype Nexus
12 7 (4.76%) CircleCI
13 5 (3.40%) Karma Test Runner
14 4 (2.72%) JIRA
15 3 (2.04%) Gatling
15 3 (2.04%) SonarQube
15 3 (2.04%) WebDriver
General
1 19 (12.93%) Games
2 18 (12.24%) Banking
2 18 (12.24%) Finance
3 9 (6.12%) Telecoms
4 2 (1.36%) Retail
5 1 (0.68%) French Language
Job Titles
1 122 (82.99%) Developer
2 59 (40.14%) React Developer
3 47 (31.97%) JavaScript Developer
4 45 (30.61%) Front End Developer (Client-Side Developer)
5 18 (12.24%) Node.js Developer
6 14 (9.52%) Full Stack Developer
7 13 (8.84%) JavaScript Engineer
8 12 (8.16%) Angular Developer
9 11 (7.48%) Software Engineer
10 9 (6.12%) UI Developer
11 8 (5.44%) HTML Developer
12 6 (4.08%) Software Developer
13 5 (3.40%) Front End Web Developer (Client-Side Developer)
13 5 (3.40%) Senior Developer
13 5 (3.40%) UI Engineer
13 5 (3.40%) Web Developer
13 5 (3.40%) Web Engineer
13 5 (3.40%) Web UI Developer
14 4 (2.72%) Developer/Software Engineer
14 4 (2.72%) Senior Front-End Developer
Libraries, Frameworks & Software Standards
1 102 (69.39%) CSS
1 102 (69.39%) Redux
2 91 (61.90%) React
3 85 (57.82%) HTML
4 79 (53.74%) Node.js
5 56 (38.10%) Enzyme
6 52 (35.37%) Sass
7 46 (31.29%) AngularJS
8 44 (29.93%) HTML5
9 41 (27.89%) CSS3
10 36 (24.49%) RESTful
11 34 (23.13%) Chai
12 28 (19.05%) Express
13 24 (16.33%) Web Services
14 23 (15.65%) OAuth
14 23 (15.65%) OAuth2
15 14 (9.52%) React Native
16 12 (8.16%) Swagger
16 12 (8.16%) Twitter Bootstrap
16 12 (8.16%) Vue (Vue.js)
Miscellaneous
1 37 (25.17%) Mobile App
1 37 (25.17%) User Experience
2 26 (17.69%) Greenfield Project
3 23 (15.65%) Computer Science
4 18 (12.24%) Algorithms
4 18 (12.24%) Data Structures
5 8 (5.44%) Fintech
5 8 (5.44%) Virtual Team
6 7 (4.76%) Clustering
7 6 (4.08%) Blog
8 4 (2.72%) Foreign Exchange (FX)
8 4 (2.72%) Online Gambling
9 2 (1.36%) Animation
10 1 (0.68%) Enterprise Software
10 1 (0.68%) Kindle
10 1 (0.68%) Mobile Games
Operating Systems
1 13 (8.84%) Android
2 5 (3.40%) Apple iOS
3 2 (1.36%) Linux
Processes & Methodologies
1 86 (58.50%) Agile Software Development
2 57 (38.78%) TDD
3 56 (38.10%) Front End Development
4 30 (20.41%) BDD
4 30 (20.41%) Responsive Web Design
5 28 (19.05%) Unit Testing
6 24 (16.33%) Software Engineering
7 23 (15.65%) Microservices
8 22 (14.97%) Scrum
8 22 (14.97%) Test Automation
9 20 (13.61%) Problem-Solving
10 18 (12.24%) Mathematics
11 17 (11.56%) Open Source
12 14 (9.52%) Continuous Deployment
12 14 (9.52%) Mobile Application Development
13 13 (8.84%) Build Automation
13 13 (8.84%) Coaching
13 13 (8.84%) Prototyping
13 13 (8.84%) Rapid Prototyping
13 13 (8.84%) Wireframes
Programming Languages
1 126 (85.71%) JavaScript
2 61 (41.50%) ES6
3 22 (14.97%) Java
4 21 (14.29%) ES8
5 11 (7.48%) JSX
5 11 (7.48%) SQL
5 11 (7.48%) TypeScript
6 9 (6.12%) ES7
7 7 (4.76%) Python
8 4 (2.72%) Go
9 2 (1.36%) C#
9 2 (1.36%) Java 8
9 2 (1.36%) PHP
10 1 (0.68%) Bash Shell
10 1 (0.68%) Clojure
10 1 (0.68%) Erlang
10 1 (0.68%) F#
10 1 (0.68%) Ruby
10 1 (0.68%) Scala
10 1 (0.68%) Solidity
Qualifications
1 23 (15.65%) Degree
2 17 (11.56%) Computer Science Degree
3 2 (1.36%) OCPJP
Quality Assurance & Compliance
1 1 (0.68%) QA
System Software
1 27 (18.37%) Docker
2 1 (0.68%) Apache ZooKeeper
2 1 (0.68%) HDFS
Systems Management
1 13 (8.84%) Opscode Chef
2 4 (2.72%) Ansible
3 3 (2.04%) Terraform
4 1 (0.68%) Hadoop YARN
4 1 (0.68%) Kibana
4 1 (0.68%) Kubernetes
4 1 (0.68%) Oozie
Vendors
1 13 (8.84%) Google
2 4 (2.72%) Splunk
2 4 (2.72%) TOWER Software
3 1 (0.68%) Adobe
3 1 (0.68%) AppDynamics
3 1 (0.68%) DevExpress
3 1 (0.68%) Facebook
3 1 (0.68%) Salesforce.com
3 1 (0.68%) ServiceNow