Period
to 8 August 2020

The median contractor rate for a JavaScript Developer was £550 per day in advertised job vacancies in London during the 6 months to 8 August 2020.

The first table below provides contractor rate benchmarking and summary statistics including a comparison to 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.

JavaScript Developer
England > London
6 months to
8 Aug 2020
Same period 2019 Same period 2018
Rank 139 126 106
Rank change year-on-year -13 -20 -10
Contract jobs requiring a JavaScript Developer 297 892 1,224
As % of all contract jobs advertised in London 1.94% 2.23% 2.67%
As % of the Job Titles category 2.10% 2.37% 2.82%
Number of daily rates quoted 262 760 1,078
Median daily rate £550 £505 £500
Median daily rate % change year-on-year +8.91% +1.00% +5.26%
10th Percentile £407 £375 £363
90th Percentile £750 £688 £669
England median daily rate £518 £500 £465
% change year-on-year +3.50% +7.53% +3.33%
Number of hourly rates quoted 2 1 3
Median hourly rate £65.00 £35.00 £47.50
Median hourly rate % change year-on-year +85.71% -26.32% +58.33%
10th Percentile £61.55 £35.00 £34.83
90th Percentile £68.85 £35.00 £48.75
England median hourly rate £62.00 £50.34 £47.50
% change year-on-year +23.17% +5.97% +18.75%

The following table is for comparison with the above and includes summary statistics for all contract IT job vacancies advertised in London. Most job vacancies include a discernible job title that can be normalized. As such, the figures in the second row provide an indication of the number of contract jobs in our overall sample.

All Contract IT Job Vacancies
London
Contract vacancies in London with a recognized job title 14,172 37,674 43,340
% of contract IT jobs with a recognized job title 92.74% 94.12% 94.70%
Number of daily rates quoted 9,611 26,977 31,344
Median daily rate £513 £500 £500
Median daily rate % change year-on-year +2.50% - +5.26%
10th Percentile £313 £313 £313
90th Percentile £710 £675 £675
England median daily rate £475 £475 £450
% change year-on-year - +5.56% -
Number of hourly rates quoted 240 499 621
Median hourly rate £35.00 £21.00 £20.00
Median hourly rate % change year-on-year +66.67% +5.00% -4.76%
10th Percentile £18.00 £12.21 £13.13
90th Percentile £55.10 £58.75 £50.50
Median hourly rate £26.96 £20.00 £18.70
% change year-on-year +34.80% +6.95% +1.19%

JavaScript Developer
Job Vacancy Trend in London

Job postings that featured JavaScript Developer in the job title as a proportion of all IT jobs advertised in London.

Job vacancy trend for JavaScript Developer in London

JavaScript Developer
Contractor Daily Rate Trend in London

3-month moving average daily rate quoted in jobs citing JavaScript Developer in London.

Daily rate trend for JavaScript Developer in London

JavaScript Developer
Daily Rate Histogram in London

Daily rate distribution for jobs citing JavaScript Developer in London over the 6 months to 8 August 2020.

Daily rate histogram for JavaScript Developer in London

JavaScript Developer
Contractor Hourly Rate Trend in London

3-month moving average hourly rates quoted in jobs citing JavaScript Developer in London.

Hourly rate trend for JavaScript Developer in London

JavaScript Developer
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 JavaScript Developer within the London region over the 6 months to 8 August 2020. 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 -30 30 £520 +4.00% 20
West London +40 23 £536 +22.57% 11
South London +3 6 £425 -5.56% 2
East London +36 1 £686 +24.73% 4
North London +12 1 - -
JavaScript Developer
England

JavaScript Developer Skill Set
Top 30 Co-occurring IT Skills in London

For the 6 months to 8 August 2020, JavaScript Developer contract jobs required the following IT 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 featuring JavaScript Developer in the job title.

1 297 (100.00%) JavaScript
2 195 (65.66%) Agile Software Development
3 170 (57.24%) React
4 118 (39.73%) Node.js
5 110 (37.04%) HTML
5 110 (37.04%) AngularJS
6 102 (34.34%) TDD
7 88 (29.63%) Java
7 88 (29.63%) AWS
8 84 (28.28%) Front Office
9 83 (27.95%) Azure
10 82 (27.61%) Finance
11 80 (26.94%) CSS
11 80 (26.94%) Web Services
12 73 (24.58%) Software Engineering
13 72 (24.24%) Fixed Income
14 66 (22.22%) Python
15 65 (21.89%) Front End Development
16 59 (19.87%) Vue.js
16 59 (19.87%) HTML5
17 57 (19.19%) GCP
18 56 (18.86%) TypeScript
19 53 (17.85%) Banking
20 51 (17.17%) Asset Management
21 50 (16.84%) .NET
21 50 (16.84%) Derivative
22 48 (16.16%) Equities
23 47 (15.82%) Google
24 46 (15.49%) Foreign Exchange (FX)
24 46 (15.49%) DevOps

JavaScript Developer Skill Set
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 22 (7.41%) Elasticsearch
2 9 (3.03%) CMS
3 8 (2.69%) IIS
4 5 (1.68%) SharePoint
5 4 (1.35%) Confluence
6 2 (0.67%) Sitefinity
7 1 (0.34%) Apache Spark
7 1 (0.34%) Headless CMS
7 1 (0.34%) nginx
7 1 (0.34%) SharePoint 2010
7 1 (0.34%) Umbraco
Applications
1 1 (0.34%) Photoshop
Business Applications
1 1 (0.34%) Salesforce.com CRM
Cloud Services
1 88 (29.63%) AWS
2 83 (27.95%) Azure
3 57 (19.19%) GCP
4 22 (7.41%) Serverless
5 19 (6.40%) AWS Lambda
6 14 (4.71%) Amazon EC2
7 5 (1.68%) GitHub
8 4 (1.35%) Amazon ECS
8 4 (1.35%) AWS CloudFormation
8 4 (1.35%) SaaS
9 3 (1.01%) Amazon EKS
9 3 (1.01%) AWS CodePipeline
10 2 (0.67%) Amazon S3
10 2 (0.67%) BlazeMeter
10 2 (0.67%) npm
11 1 (0.34%) Amazon Cognito
11 1 (0.34%) Firebase
11 1 (0.34%) Oracle CX
11 1 (0.34%) PaaS
11 1 (0.34%) Yarn
Communications & Networking
1 1 (0.34%) HbbTV
1 1 (0.34%) Internet
1 1 (0.34%) RTMP
1 1 (0.34%) TCP/IP
Database & Business Intelligence
1 19 (6.40%) PostgreSQL
2 15 (5.05%) NoSQL
2 15 (5.05%) SQL Server
3 12 (4.04%) Amazon RDS
4 6 (2.02%) MySQL
5 4 (1.35%) Big Data
5 4 (1.35%) MongoDB
6 3 (1.01%) SQL Server Integration Services
7 2 (0.67%) Amazon DynamoDB
7 2 (0.67%) Azure SQL Database
7 2 (0.67%) Relational Database
8 1 (0.34%) Amazon Aurora
8 1 (0.34%) Apache Cassandra
8 1 (0.34%) ArangoDB
8 1 (0.34%) BigQuery
8 1 (0.34%) CouchDB
8 1 (0.34%) Hadoop
8 1 (0.34%) Redis
8 1 (0.34%) SQL Server 2014
8 1 (0.34%) SQL Server Reporting Services
Development Applications
1 31 (10.44%) RStudio
2 23 (7.74%) Git (software)
3 17 (5.72%) Jenkins
4 15 (5.05%) webpack
5 10 (3.37%) TeamCity
6 9 (3.03%) Selenium
7 8 (2.69%) CircleCI
7 8 (2.69%) Jasmine
8 7 (2.36%) WebDriver
9 6 (2.02%) Babel
9 6 (2.02%) gulp
9 6 (2.02%) JIRA
10 5 (1.68%) Grunt
11 4 (1.35%) Mocha
11 4 (1.35%) Subversion
11 4 (1.35%) Team Foundation Server
12 3 (1.01%) Cucumber
12 3 (1.01%) Cypress.io
12 3 (1.01%) Hudson
12 3 (1.01%) PostCSS
General
1 84 (28.28%) Front Office
2 82 (27.61%) Finance
3 53 (17.85%) Banking
4 40 (13.47%) Investment Banking
5 10 (3.37%) Retail
6 9 (3.03%) Public Sector
7 3 (1.01%) Back Office
7 3 (1.01%) Financial Institution
8 2 (0.67%) Automotive
9 1 (0.34%) Advertising
9 1 (0.34%) Aerospace
9 1 (0.34%) Electronics
9 1 (0.34%) Games
9 1 (0.34%) Local Government
9 1 (0.34%) Manufacturing
9 1 (0.34%) Marketing
9 1 (0.34%) Publishing
9 1 (0.34%) Telecoms
Libraries, Frameworks & Software Standards
1 170 (57.24%) React
2 118 (39.73%) Node.js
3 110 (37.04%) AngularJS
3 110 (37.04%) HTML
4 80 (26.94%) CSS
4 80 (26.94%) Web Services
5 59 (19.87%) HTML5
5 59 (19.87%) Vue.js
6 50 (16.84%) .NET
7 42 (14.14%) Redux
8 38 (12.79%) RESTful
9 34 (11.45%) ASP.NET
10 32 (10.77%) REST
11 28 (9.43%) ASP.NET Web API
12 27 (9.09%) ASP.NET Core
13 20 (6.73%) GraphQL
14 17 (5.72%) Sass
15 16 (5.39%) CSS3
16 14 (4.71%) D3.js
16 14 (4.71%) jQuery
Miscellaneous
1 72 (24.24%) Fixed Income
2 50 (16.84%) Derivative
3 48 (16.16%) Equities
4 46 (15.49%) Foreign Exchange (FX)
5 45 (15.15%) Hedge funds
6 27 (9.09%) Greenfield Project
7 20 (6.73%) User Experience
8 18 (6.06%) Analytical Skills
9 10 (3.37%) Video\Live Streaming
10 8 (2.69%) Over-the-Top Content
11 7 (2.36%) Mobile App
11 7 (2.36%) Video on Demand
12 5 (1.68%) Enterprise Software
12 5 (1.68%) IPTV
12 5 (1.68%) STB
13 4 (1.35%) Algorithms
13 4 (1.35%) Cloud Native
14 3 (1.01%) Public Cloud
15 2 (0.67%) Data Structures
15 2 (0.67%) Equity Derivative
Operating Systems
1 11 (3.70%) Android
2 9 (3.03%) Linux
3 8 (2.69%) Windows
3 8 (2.69%) Windows Server
4 5 (1.68%) Unix
5 3 (1.01%) Mac OS X
6 2 (0.67%) Apple iOS
6 2 (0.67%) tvOS
7 1 (0.34%) CoreOS
Processes & Methodologies
1 195 (65.66%) Agile Software Development
2 102 (34.34%) TDD
3 73 (24.58%) Software Engineering
4 65 (21.89%) Front End Development
5 51 (17.17%) Asset Management
6 46 (15.49%) DevOps
7 43 (14.48%) Investment Management
8 34 (11.45%) Decision-Making
8 34 (11.45%) OO
9 32 (10.77%) BDD
9 32 (10.77%) Business Analysis
10 31 (10.44%) Portfolio Management
11 30 (10.10%) SOLID
12 25 (8.42%) Continuous Integration
12 25 (8.42%) SOA
13 24 (8.08%) Continuous Improvement
14 21 (7.07%) Scrum
15 20 (6.73%) Test Automation
16 19 (6.40%) MVC
17 18 (6.06%) Analytics
Programming Languages
1 297 (100.00%) JavaScript
2 88 (29.63%) Java
3 66 (22.22%) Python
4 56 (18.86%) TypeScript
5 33 (11.11%) SQL
6 25 (8.42%) C#
7 17 (5.72%) ES6
8 10 (3.37%) R
9 7 (2.36%) BrightScript
10 6 (2.02%) ActionScript
11 5 (1.68%) PHP
12 3 (1.01%) Apex Code
12 3 (1.01%) ES7
12 3 (1.01%) ES8
12 3 (1.01%) T-SQL
13 2 (0.67%) C++
13 2 (0.67%) Go
13 2 (0.67%) Kotlin
13 2 (0.67%) PowerShell
14 1 (0.34%) C
Qualifications
1 12 (4.04%) Security Cleared
2 10 (3.37%) SC Cleared
3 9 (3.03%) Degree
4 2 (0.67%) Computer Science Degree
4 2 (0.67%) DV Cleared
5 1 (0.34%) BPSS Clearance
5 1 (0.34%) DBS Check
Quality Assurance & Compliance
1 15 (5.05%) QA
2 5 (1.68%) WCAG
System Software
1 21 (7.07%) Docker
Systems Management
1 21 (7.07%) Kubernetes
2 3 (1.01%) Ansible
2 3 (1.01%) Kibana
2 3 (1.01%) Terraform
3 2 (0.67%) Mesos
3 2 (0.67%) Opscode Chef
4 1 (0.34%) Grafana
4 1 (0.34%) Marathon
4 1 (0.34%) Single Sign-On
Vendors
1 47 (15.82%) Google
2 9 (3.03%) Oracle
3 7 (2.36%) Roku
4 4 (1.35%) Microsoft
5 3 (1.01%) Bloomberg
5 3 (1.01%) Salesforce.com
6 2 (0.67%) Conga
6 2 (0.67%) DocuSign
7 1 (0.34%) Adobe
7 1 (0.34%) Cognos
7 1 (0.34%) Reuters
7 1 (0.34%) SAP