Period
to 10 August 2020

The following table provides summary statistics for contract job vacancies advertised in Central London with a requirement for JavaScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JavaScript over the 6 months to 10 August 2020 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.

JavaScript (including ECMAScript)
London > Central London
6 months to
10 Aug 2020
Same period 2019 Same period 2018
Rank 14 7 5
Rank change year-on-year -7 -2 +3
Contract jobs citing JavaScript 246 1,188 1,380
As % of all contract jobs advertised in Central London 9.30% 14.14% 15.02%
As % of the Programming Languages category 18.74% 28.07% 28.20%
Number of daily rates quoted 185 1,007 1,132
Median daily rate £505 £500 £500
Median daily rate % change year-on-year +1.00% - +5.26%
10th Percentile £343 £381 £363
90th Percentile £665 £625 £638
London median daily rate £530 £505 £500
% change year-on-year +4.95% +1.00% +5.26%
Number of hourly rates quoted 6 7 1
Median hourly rate £37.00 £35.00 £55.00
Median hourly rate % change year-on-year +5.71% -36.36% -
10th Percentile £33.88 £32.50 £47.50
90th Percentile £57.50 £92.20 £62.50
London median hourly rate £47.75 £50.00 £33.50
% change year-on-year -4.50% +49.25% +34.59%

JavaScript is in the Programming Languages category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Central London with a requirement for coding skills.

All Programming Languages
Central London
Contract vacancies with a requirement for coding skills 1,313 4,232 4,893
As % of all contract IT jobs advertised in Central London 49.66% 50.36% 53.25%
Number of daily rates quoted 946 3,437 4,027
Median daily rate £525 £525 £525
10th Percentile £363 £399 £363
90th Percentile £688 £675 £678
London median daily rate £525 £525 £513
% change year-on-year - +2.44% +2.50%
Number of hourly rates quoted 15 25 18
Median hourly rate £35.00 £35.00 £21.50
Median hourly rate % change year-on-year - +62.79% -18.61%
10th Percentile £26.60 £21.00 £12.50
90th Percentile £57.10 £59.05 £64.00
Median hourly rate £35.00 £42.50 £39.00
% change year-on-year -17.65% +8.97% -2.50%

JavaScript
Job Vacancy Trend in Central London

Job postings citing JavaScript as a proportion of all IT jobs advertised in Central London.

Job vacancy trend for JavaScript in Central London

JavaScript
Contractor Daily Rate Trend in Central London

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

Daily rate trend for JavaScript in Central London

JavaScript
Daily Rate Histogram in Central London

Daily rate distribution for jobs citing JavaScript in Central London over the 6 months to 10 August 2020.

Daily rate histogram for JavaScript in Central London

JavaScript
Contractor Hourly Rate Trend in Central London

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

Hourly rate trend for JavaScript in Central London

JavaScript
Hourly Rate Histogram in Central London

Hourly rate distribution of jobs citing JavaScript in Central London over the 6 months to 10 August 2020.

Hourly rate histogram for JavaScript in Central London

JavaScript
Contract Job Locations in Central London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JavaScript within the Central London region over the 6 months to 10 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
City of London -8 190 £503 +0.50% 163
West End of London +2 10 £500 - 4
City of Westminster +10 9 £525 -
Camden +2 1 £721 +31.09% 4
JavaScript
London

For the 6 months to 10 August 2020, IT contractor jobs citing JavaScript 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 Central London region with a requirement for JavaScript.

1 99 (40.24%) CSS
2 98 (39.84%) HTML
3 88 (35.77%) Agile Software Development
4 77 (31.30%) React
5 74 (30.08%) SQL
6 73 (29.67%) Java
7 69 (28.05%) Node.js
8 66 (26.83%) Finance
9 53 (21.54%) .NET
10 49 (19.92%) AngularJS
11 48 (19.51%) C#
12 46 (18.70%) Azure
13 45 (18.29%) Python
13 45 (18.29%) TDD
14 43 (17.48%) AWS
15 41 (16.67%) Git (software)
16 40 (16.26%) Front End Development
17 37 (15.04%) Docker
18 36 (14.63%) Jenkins
19 35 (14.23%) DevOps
19 35 (14.23%) User Experience
20 34 (13.82%) HTML5
20 34 (13.82%) SQL Server
21 32 (13.01%) Banking
22 31 (12.60%) Software Engineering
23 30 (12.20%) Redux
23 30 (12.20%) TypeScript
24 29 (11.79%) Continuous Integration
25 28 (11.38%) Kubernetes
26 27 (10.98%) ASP.NET

JavaScript
Co-occurring IT Skills in Central 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 11 (4.47%) Elasticsearch
2 10 (4.07%) Apache Spark
3 7 (2.85%) SharePoint
4 5 (2.03%) Apache
4 5 (2.03%) Confluence
5 4 (1.63%) Tornado
6 3 (1.22%) CMS
6 3 (1.22%) WordPress
7 2 (0.81%) Appian
7 2 (0.81%) IIS
7 2 (0.81%) JBoss
7 2 (0.81%) nginx
7 2 (0.81%) Tomcat
8 1 (0.41%) Apache Pig
8 1 (0.41%) Apache Solr
8 1 (0.41%) Cloud Foundry
8 1 (0.41%) Oracle Application Server
8 1 (0.41%) Oracle SOA Suite
8 1 (0.41%) WebLogic
Applications
1 9 (3.66%) Photoshop
2 6 (2.44%) Acrobat
3 4 (1.63%) Microsoft Excel
4 2 (0.81%) Microsoft PowerPoint
5 1 (0.41%) InVision
5 1 (0.41%) Sketch
5 1 (0.41%) Zeplin
Business Applications
1 5 (2.03%) Dynamics CRM
2 4 (1.63%) Salesforce.com CRM
3 1 (0.41%) SAP Oil and Gas
Cloud Services
1 46 (18.70%) Azure
2 43 (17.48%) AWS
3 23 (9.35%) GCP
4 11 (4.47%) Serverless
5 10 (4.07%) GitHub
6 8 (3.25%) Power Platform
7 7 (2.85%) npm
8 6 (2.44%) AWS Lambda
8 6 (2.44%) SaaS
9 4 (1.63%) Dynamics 365
9 4 (1.63%) Heroku
9 4 (1.63%) PaaS
10 3 (1.22%) Amazon S3
10 3 (1.22%) Apigee
10 3 (1.22%) Cloud Computing
11 2 (0.81%) Amazon EC2
11 2 (0.81%) Amazon EKS
11 2 (0.81%) AWS CloudFormation
11 2 (0.81%) Kong
11 2 (0.81%) OpenShift
Communications & Networking
1 2 (0.81%) DNS
2 1 (0.41%) Firewall
2 1 (0.41%) HTTP
2 1 (0.41%) Kerberos
2 1 (0.41%) VPN
Database & Business Intelligence
1 34 (13.82%) SQL Server
2 24 (9.76%) NoSQL
3 20 (8.13%) MySQL
4 16 (6.50%) PostgreSQL
5 15 (6.10%) SQL Server Reporting Services
6 14 (5.69%) Data Warehouse
7 11 (4.47%) Big Data
8 10 (4.07%) OLAP
8 10 (4.07%) SQL Server Integration Services
9 8 (3.25%) Power BI
9 8 (3.25%) Relational Database
10 5 (2.03%) MongoDB
11 4 (1.63%) Apache Hive
11 4 (1.63%) Hadoop
11 4 (1.63%) SQL Server Analysis Services
12 3 (1.22%) Apache Cassandra
12 3 (1.22%) Redis
13 2 (0.81%) Spotfire
13 2 (0.81%) SQL Server 2012
13 2 (0.81%) SQLite
Development Applications
1 41 (16.67%) Git (software)
2 36 (14.63%) Jenkins
3 12 (4.88%) JIRA
3 12 (4.88%) Team Foundation Server
4 9 (3.66%) CircleCI
5 7 (2.85%) GitLab
5 7 (2.85%) Jasmine
5 7 (2.85%) webpack
6 6 (2.44%) gulp
6 6 (2.44%) Selenium
6 6 (2.44%) Visual Studio
7 5 (2.03%) Cypress.io
7 5 (2.03%) git-flow
7 5 (2.03%) Sonatype Nexus
7 5 (2.03%) Subversion
8 4 (1.63%) Bitbucket
8 4 (1.63%) Gradle
8 4 (1.63%) Mocha
8 4 (1.63%) ProC
8 4 (1.63%) TeamCity
General
1 66 (26.83%) Finance
2 32 (13.01%) Banking
3 14 (5.69%) Front Office
4 11 (4.47%) Marketing
5 8 (3.25%) Public Sector
6 5 (2.03%) Investment Banking
7 4 (1.63%) Advertising
7 4 (1.63%) International Banking
7 4 (1.63%) Law
8 3 (1.22%) Publishing
8 3 (1.22%) Retail
9 2 (0.81%) Back Office
9 2 (0.81%) Financial Institution
9 2 (0.81%) Local Government
9 2 (0.81%) Manufacturing
9 2 (0.81%) Telecoms
10 1 (0.41%) Electronics
10 1 (0.41%) Games
10 1 (0.41%) Legal
Job Titles
1 173 (70.33%) Developer
2 37 (15.04%) React Developer
3 31 (12.60%) Full Stack Developer
4 30 (12.20%) JavaScript Developer
4 30 (12.20%) Senior Developer
5 26 (10.57%) Front End Developer (Client-Side Developer)
6 21 (8.54%) .NET Developer
7 16 (6.50%) SQL Developer
8 14 (5.69%) C# Developer
9 13 (5.28%) C# .NET Developer
9 13 (5.28%) Java Developer
10 10 (4.07%) Angular Developer
10 10 (4.07%) Python Developer
11 9 (3.66%) Architect
11 9 (3.66%) DevOps Engineer
11 9 (3.66%) HTML Developer
11 9 (3.66%) Node.js Developer
12 8 (3.25%) ASP.NET Developer
12 8 (3.25%) Senior JavaScript Developer
12 8 (3.25%) Senior React Developer
Libraries, Frameworks & Software Standards
1 99 (40.24%) CSS
2 98 (39.84%) HTML
3 77 (31.30%) React
4 69 (28.05%) Node.js
5 53 (21.54%) .NET
6 49 (19.92%) AngularJS
7 34 (13.82%) HTML5
8 30 (12.20%) Redux
9 27 (10.98%) ASP.NET
10 23 (9.35%) Web Services
11 22 (8.94%) jQuery
12 20 (8.13%) CSS3
13 19 (7.72%) REST
14 16 (6.50%) Vue.js
15 14 (5.69%) GraphQL
15 14 (5.69%) Sass
16 13 (5.28%) .NET Core
16 13 (5.28%) RESTful
17 12 (4.88%) Jest
18 10 (4.07%) Flask
Miscellaneous
1 35 (14.23%) User Experience
2 20 (8.13%) Analytical Skills
3 16 (6.50%) Greenfield Project
4 10 (4.07%) Data Structures
5 9 (3.66%) Mobile App
6 8 (3.25%) Enterprise Software
7 6 (2.44%) Algorithms
8 3 (1.22%) Cloud Native
8 3 (1.22%) Fixed Income
8 3 (1.22%) Hedge funds
8 3 (1.22%) Mobile Payment
9 2 (0.81%) Credit Risk
9 2 (0.81%) Equities
9 2 (0.81%) iPad
9 2 (0.81%) Management Information System
9 2 (0.81%) Public Cloud
9 2 (0.81%) Self-Motivation
9 2 (0.81%) Social Media
9 2 (0.81%) Tandem
9 2 (0.81%) W3C
Operating Systems
1 20 (8.13%) Linux
2 11 (4.47%) Windows
3 9 (3.66%) Unix
4 7 (2.85%) Android
5 4 (1.63%) Apple iOS
6 3 (1.22%) Mac OS X
7 1 (0.41%) AIX
7 1 (0.41%) Debian
7 1 (0.41%) Red Hat Enterprise Linux
7 1 (0.41%) Ubuntu
7 1 (0.41%) Windows 10
7 1 (0.41%) Windows XP
Processes & Methodologies
1 88 (35.77%) Agile Software Development
2 45 (18.29%) TDD
3 40 (16.26%) Front End Development
4 35 (14.23%) DevOps
5 31 (12.60%) Software Engineering
6 29 (11.79%) Continuous Integration
7 26 (10.57%) Microservices
8 24 (9.76%) Scrum
9 23 (9.35%) Problem-Solving
10 21 (8.54%) Open Source
11 20 (8.13%) SDLC
11 20 (8.13%) Test Automation
12 18 (7.32%) Computer Science
12 18 (7.32%) Web Development
13 17 (6.91%) Analytics
13 17 (6.91%) BDD
13 17 (6.91%) Unit Testing
14 16 (6.50%) Continuous Improvement
14 16 (6.50%) MVC
15 15 (6.10%) OO
Programming Languages
1 74 (30.08%) SQL
2 73 (29.67%) Java
3 48 (19.51%) C#
4 45 (18.29%) Python
5 30 (12.20%) TypeScript
6 16 (6.50%) PHP
7 14 (5.69%) PowerShell
8 12 (4.88%) ES6
8 12 (4.88%) Ruby
8 12 (4.88%) Scala
8 12 (4.88%) T-SQL
9 10 (4.07%) Go
9 10 (4.07%) VBA
10 8 (3.25%) C
10 8 (3.25%) C++
10 8 (3.25%) Groovy
10 8 (3.25%) Kotlin
11 5 (2.03%) Apex Code
11 5 (2.03%) Bash Shell
12 4 (1.63%) Perl
Qualifications
1 19 (7.72%) Degree
2 10 (4.07%) Security Cleared
3 5 (2.03%) SC Cleared
4 4 (1.63%) BPSS Clearance
5 3 (1.22%) Computer Science Degree
6 2 (0.81%) ISEB
6 2 (0.81%) ISTQB
6 2 (0.81%) Microsoft Certification
7 1 (0.41%) DBS Check
7 1 (0.41%) ISEB Practitioner
7 1 (0.41%) Master's Degree
Quality Assurance & Compliance
1 16 (6.50%) QA
2 5 (2.03%) WCAG
3 3 (1.22%) Solvency II
4 1 (0.41%) Disclosure Scotland
4 1 (0.41%) PCI DSS
4 1 (0.41%) SLA
System Software
1 37 (15.04%) Docker
2 6 (2.44%) Active Directory
3 1 (0.41%) OpenAM
3 1 (0.41%) OpenDJ
Systems Management
1 28 (11.38%) Kubernetes
2 19 (7.72%) Terraform
3 11 (4.47%) Ansible
4 4 (1.63%) Grafana
5 3 (1.22%) Kibana
6 1 (0.41%) Istio
6 1 (0.41%) Jamf Pro
6 1 (0.41%) Opscode Chef
6 1 (0.41%) Oracle Statspack
6 1 (0.41%) Prometheus
6 1 (0.41%) Puppet
6 1 (0.41%) SCCM
Vendors
1 22 (8.94%) Microsoft
2 15 (6.10%) Google
3 9 (3.66%) Cognos
3 9 (3.66%) Salesforce.com
4 8 (3.25%) Adobe
5 7 (2.85%) Oracle
6 5 (2.03%) Cloudera
6 5 (2.03%) Tableau
7 4 (1.63%) Hortonworks
7 4 (1.63%) ServiceNow
8 3 (1.22%) MuleSoft
8 3 (1.22%) SAP
9 2 (0.81%) Facebook
9 2 (0.81%) HP
9 2 (0.81%) Salesforce Marketing Cloud
9 2 (0.81%) Sybase
9 2 (0.81%) Telerik
9 2 (0.81%) WSO2
10 1 (0.41%) Informatica
10 1 (0.41%) Novell