Period
to 8 April 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 8 April 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
8 Apr 2020
Same period 2019 Same period 2018
Rank 11 6 7
Rank change year-on-year -5 +1 +1
Contract jobs citing JavaScript 577 1,282 1,337
As % of all contract jobs advertised in Central London 11.15% 14.26% 14.49%
As % of the Programming Languages category 22.74% 27.22% 27.56%
Number of daily rates quoted 422 1,035 1,150
Median daily rate £525 £500 £500
Median daily rate % change year-on-year +5.00% - +8.11%
10th Percentile £343 £363 £363
90th Percentile £650 £638 £638
London median daily rate £525 £500 £500
% change year-on-year +5.00% - +11.11%
Number of hourly rates quoted 8 8 1
Median hourly rate £48.50 £35.00 £27.09
Median hourly rate % change year-on-year +38.57% +29.20% -
10th Percentile £35.00 £28.30 £25.66
90th Percentile £57.50 £83.28 £28.52
London median hourly rate £54.50 £36.00 £27.00
% change year-on-year +51.39% +33.33% -32.94%

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 2,537 4,709 4,851
As % of all contract IT jobs advertised in Central London 49.04% 52.37% 52.59%
Number of daily rates quoted 1,919 3,745 4,081
Median daily rate £525 £525 £513
Median daily rate % change year-on-year - +2.44% +7.89%
10th Percentile £375 £381 £363
90th Percentile £675 £675 £688
London median daily rate £525 £525 £500
% change year-on-year - +5.00% +5.26%
Number of hourly rates quoted 22 16 23
Median hourly rate £35.00 £28.75 £21.50
Median hourly rate % change year-on-year +21.74% +33.72% -24.15%
10th Percentile £24.50 £18.32 £17.55
90th Percentile £57.05 £63.25 £67.50
Median hourly rate £44.02 £35.50 £35.00
% change year-on-year +24.00% +1.43% -20.45%

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 8 April 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 8 April 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 8 April 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 -2 428 £525 +5.00% 284
City of Westminster +5 23 £500 -9.09%
West End of London -3 15 £463 -15.91% 3
Southwark -1 3 £600 +20.00%
JavaScript
London

For the 6 months to 8 April 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.

1 249 (43.15%) CSS
2 244 (42.29%) HTML
3 243 (42.11%) Agile Software Development
4 174 (30.16%) React
5 134 (23.22%) Node.js
6 130 (22.53%) Finance
7 124 (21.49%) Java
8 111 (19.24%) TDD
8 111 (19.24%) AngularJS
9 105 (18.20%) SQL
10 98 (16.98%) HTML5
11 97 (16.81%) Front End Development
12 96 (16.64%) Python
13 93 (16.12%) AWS
14 92 (15.94%) User Experience
15 91 (15.77%) .NET
16 90 (15.60%) C#
17 87 (15.08%) Git (software)
18 86 (14.90%) Test Automation
18 86 (14.90%) TypeScript
19 85 (14.73%) Redux
20 80 (13.86%) Azure
21 73 (12.65%) DevOps
22 68 (11.79%) Continuous Integration
23 59 (10.23%) Analytical Skills
24 57 (9.88%) Ruby
25 55 (9.53%) Scrum
26 54 (9.36%) Kubernetes
27 53 (9.19%) GCP
28 52 (9.01%) Jenkins

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 24 (4.16%) CMS
2 20 (3.47%) Elasticsearch
3 12 (2.08%) WebSphere
4 8 (1.39%) Confluence
4 8 (1.39%) WebLogic
5 6 (1.04%) Adobe Experience Manager
5 6 (1.04%) Drupal
5 6 (1.04%) SharePoint
6 5 (0.87%) Apache
6 5 (0.87%) Apache Spark
6 5 (0.87%) IIS
7 3 (0.52%) nginx
7 3 (0.52%) WordPress
8 2 (0.35%) Cloud Foundry
8 2 (0.35%) EPiServer
8 2 (0.35%) Oracle Workflow
8 2 (0.35%) SAP Portal
8 2 (0.35%) SharePoint 2010
8 2 (0.35%) Tomcat
9 1 (0.17%) Tornado
Applications
1 7 (1.21%) Photoshop
2 5 (0.87%) Sketch
3 4 (0.69%) InVision
4 3 (0.52%) InDesign
5 2 (0.35%) Acrobat
5 2 (0.35%) Adobe XD
5 2 (0.35%) Lectora
5 2 (0.35%) Microsoft Excel
6 1 (0.17%) Adobe Illustrator
6 1 (0.17%) Zeplin
Business Applications
1 7 (1.21%) Dynamics CRM
2 6 (1.04%) Magento
3 2 (0.35%) Shopify
4 1 (0.17%) SAP Hybris
4 1 (0.17%) SAP Oil and Gas
Cloud Services
1 93 (16.12%) AWS
2 80 (13.86%) Azure
3 53 (9.19%) GCP
4 40 (6.93%) GitHub
5 23 (3.99%) Serverless
6 16 (2.77%) Heroku
7 11 (1.91%) AWS Lambda
8 9 (1.56%) Amazon SQS
8 9 (1.56%) Route 53
9 7 (1.21%) Amazon S3
9 7 (1.21%) npm
10 6 (1.04%) Amazon EC2
10 6 (1.04%) Amazon EKS
10 6 (1.04%) Cloud Computing
10 6 (1.04%) Google Analytics
10 6 (1.04%) PaaS
11 5 (0.87%) Dynamics 365
12 4 (0.69%) Amazon ELB
12 4 (0.69%) Firebase
13 3 (0.52%) Datadog
Communications & Networking
1 16 (2.77%) HTTP
2 6 (1.04%) DNS
2 6 (1.04%) Firewall
2 6 (1.04%) SSL
3 5 (0.87%) TCP/IP
4 1 (0.17%) AMQP
4 1 (0.17%) DHCP
4 1 (0.17%) DOCSIS
4 1 (0.17%) FTP
4 1 (0.17%) Internet
4 1 (0.17%) Intranet
4 1 (0.17%) MQTT
4 1 (0.17%) SNMP
Database & Business Intelligence
1 48 (8.32%) NoSQL
2 42 (7.28%) SQL Server
3 27 (4.68%) MySQL
3 27 (4.68%) PostgreSQL
4 22 (3.81%) MongoDB
5 16 (2.77%) Data Warehouse
6 14 (2.43%) Relational Database
7 13 (2.25%) Redis
8 11 (1.91%) Big Data
8 11 (1.91%) SQL Server Reporting Services
9 9 (1.56%) OLAP
10 7 (1.21%) Amazon DynamoDB
11 6 (1.04%) Neo4j
12 5 (0.87%) Oracle Database
12 5 (0.87%) SQL Server Integration Services
13 4 (0.69%) Apache Cassandra
13 4 (0.69%) Hadoop
13 4 (0.69%) RDBMS
14 3 (0.52%) QlikView
14 3 (0.52%) SQLite
Development Applications
1 87 (15.08%) Git (software)
2 52 (9.01%) Jenkins
3 30 (5.20%) JIRA
3 30 (5.20%) webpack
4 20 (3.47%) Selenium
5 18 (3.12%) Visual Studio
6 17 (2.95%) JUnit
6 17 (2.95%) Team Foundation Server
7 15 (2.60%) CircleCI
7 15 (2.60%) Gradle
7 15 (2.60%) JMeter
8 14 (2.43%) Cucumber
9 11 (1.91%) git-flow
10 10 (1.73%) Maven
11 9 (1.56%) Cypress.io
11 9 (1.56%) Mocha
11 9 (1.56%) Mockito
12 8 (1.39%) GitLab
12 8 (1.39%) gulp
12 8 (1.39%) RSpec
General
1 130 (22.53%) Finance
2 52 (9.01%) Banking
3 20 (3.47%) Marketing
4 19 (3.29%) Public Sector
5 13 (2.25%) Front Office
6 11 (1.91%) Investment Banking
7 9 (1.56%) Retail
8 7 (1.21%) Advertising
8 7 (1.21%) Law
8 7 (1.21%) Manufacturing
8 7 (1.21%) Publishing
8 7 (1.21%) Telecoms
9 6 (1.04%) Games
10 4 (0.69%) Electronics
11 3 (0.52%) Back Office
11 3 (0.52%) Fire and Rescue
11 3 (0.52%) Legal
12 2 (0.35%) Housing Association
12 2 (0.35%) International Banking
12 2 (0.35%) Retail Banking
Job Titles
1 415 (71.92%) Developer
2 102 (17.68%) React Developer
3 73 (12.65%) Senior Developer
4 71 (12.31%) JavaScript Developer
5 70 (12.13%) Front End Developer (Client-Side Developer)
6 68 (11.79%) Full Stack Developer
7 35 (6.07%) Node.js Developer
8 33 (5.72%) C# Developer
9 29 (5.03%) .NET Developer
10 28 (4.85%) Java Developer
11 25 (4.33%) Digital Developer
11 25 (4.33%) Python Developer
11 25 (4.33%) Senior React Developer
12 21 (3.64%) Angular Developer
13 20 (3.47%) HTML Developer
14 19 (3.29%) Architect
15 16 (2.77%) Consultant
15 16 (2.77%) DevOps Engineer
15 16 (2.77%) SQL Developer
16 15 (2.60%) Senior JavaScript Developer
Libraries, Frameworks & Software Standards
1 249 (43.15%) CSS
2 244 (42.29%) HTML
3 174 (30.16%) React
4 134 (23.22%) Node.js
5 111 (19.24%) AngularJS
6 98 (16.98%) HTML5
7 91 (15.77%) .NET
8 85 (14.73%) Redux
9 52 (9.01%) jQuery
10 51 (8.84%) CSS3
11 44 (7.63%) ASP.NET
12 42 (7.28%) RESTful
13 39 (6.76%) REST
14 35 (6.07%) Jest
14 35 (6.07%) Web Services
15 32 (5.55%) Sass
16 31 (5.37%) Vue.js
17 30 (5.20%) GraphQL
18 27 (4.68%) XML
19 26 (4.51%) Spring
Miscellaneous
1 92 (15.94%) User Experience
2 59 (10.23%) Analytical Skills
3 48 (8.32%) Greenfield Project
4 39 (6.76%) Data Structures
5 35 (6.07%) Mobile App
6 29 (5.03%) Algorithms
7 22 (3.81%) Enterprise Software
8 13 (2.25%) W3C
9 12 (2.08%) Hedge funds
9 12 (2.08%) Self-Motivation
10 10 (1.73%) Foreign Exchange (FX)
11 9 (1.56%) Mobile Payment
12 7 (1.21%) Cloud Native
12 7 (1.21%) Public Cloud
13 5 (0.87%) iPad
13 5 (0.87%) Virtual Team
14 4 (0.69%) BYOD
15 3 (0.52%) Fixed Income
15 3 (0.52%) Linux Command Line
15 3 (0.52%) Video\Live Streaming
Operating Systems
1 39 (6.76%) Linux
2 14 (2.43%) Android
3 13 (2.25%) Windows
4 12 (2.08%) Unix
5 10 (1.73%) Apple iOS
6 4 (0.69%) Mac OS X
7 3 (0.52%) Ubuntu
8 2 (0.35%) Mac OS
8 2 (0.35%) Red Hat Enterprise Linux
9 1 (0.17%) AIX
9 1 (0.17%) Debian
9 1 (0.17%) Windows 10
9 1 (0.17%) Windows XP
Processes & Methodologies
1 243 (42.11%) Agile Software Development
2 111 (19.24%) TDD
3 97 (16.81%) Front End Development
4 86 (14.90%) Test Automation
5 73 (12.65%) DevOps
6 68 (11.79%) Continuous Integration
7 55 (9.53%) Scrum
8 52 (9.01%) Problem-Solving
9 51 (8.84%) Computer Science
10 49 (8.49%) OO
11 47 (8.15%) Software Engineering
12 43 (7.45%) BDD
12 43 (7.45%) Microservices
12 43 (7.45%) MVC
13 42 (7.28%) Web Development
14 36 (6.24%) OOD
15 35 (6.07%) E-Commerce
16 34 (5.89%) Continuous Delivery
16 34 (5.89%) SDLC
17 32 (5.55%) Pair Programming
Programming Languages
1 124 (21.49%) Java
2 105 (18.20%) SQL
3 96 (16.64%) Python
4 90 (15.60%) C#
5 86 (14.90%) TypeScript
6 57 (9.88%) Ruby
7 46 (7.97%) PHP
8 36 (6.24%) ES6
9 27 (4.68%) Go
10 22 (3.81%) Scala
11 17 (2.95%) Kotlin
12 16 (2.77%) C++
13 14 (2.43%) Groovy
14 13 (2.25%) Java 8
14 13 (2.25%) PowerShell
15 11 (1.91%) T-SQL
16 10 (1.73%) Bash Shell
17 9 (1.56%) VBA
18 6 (1.04%) C
19 5 (0.87%) Perl
Qualifications
1 32 (5.55%) Degree
2 16 (2.77%) Computer Science Degree
2 16 (2.77%) Security Cleared
3 9 (1.56%) SC Cleared
4 5 (0.87%) BPSS Clearance
5 4 (0.69%) BC Cleared
5 4 (0.69%) Master's Degree
6 3 (0.52%) ISEB
6 3 (0.52%) ISTQB
7 2 (0.35%) DBS Check
7 2 (0.35%) DV Cleared
7 2 (0.35%) Microsoft Certification
8 1 (0.17%) CTC Cleared
8 1 (0.17%) ISEB Practitioner
8 1 (0.17%) Postgraduate
Quality Assurance & Compliance
1 32 (5.55%) QA
2 11 (1.91%) WCAG
3 2 (0.35%) SLA
4 1 (0.17%) MiFID
4 1 (0.17%) PCI DSS
4 1 (0.17%) PMO
4 1 (0.17%) Solvency II
System Software
1 51 (8.84%) Docker
2 6 (1.04%) Active Directory
3 3 (0.52%) OpenAM
3 3 (0.52%) OpenDJ
4 1 (0.17%) Varnish
Systems Management
1 54 (9.36%) Kubernetes
2 44 (7.63%) Terraform
3 8 (1.39%) Ansible
4 6 (1.04%) Opscode Chef
4 6 (1.04%) Puppet
4 6 (1.04%) Single Sign-On
5 5 (0.87%) SCCM
6 4 (0.69%) CFEngine
6 4 (0.69%) HP SiteScope
6 4 (0.69%) Kibana
6 4 (0.69%) Nagios
6 4 (0.69%) Prometheus
7 2 (0.35%) Grafana
7 2 (0.35%) Istio
7 2 (0.35%) MIIS
8 1 (0.17%) Control-M
8 1 (0.17%) Docker Swarm
8 1 (0.17%) Graphite
8 1 (0.17%) Jamf Pro
8 1 (0.17%) Oracle Statspack
Vendors
1 34 (5.89%) Google
2 26 (4.51%) Microsoft
3 18 (3.12%) Oracle
4 15 (2.60%) Adobe
5 9 (1.56%) SAP
6 8 (1.39%) Cognos
7 6 (1.04%) ServiceNow
7 6 (1.04%) Splunk
8 5 (0.87%) PeopleSoft
8 5 (0.87%) Salesforce.com
8 5 (0.87%) Tealium
9 4 (0.69%) Atlassian
9 4 (0.69%) Facebook
9 4 (0.69%) Okta
9 4 (0.69%) Sybase
10 3 (0.52%) ForgeRock
10 3 (0.52%) hybris
10 3 (0.52%) Lets Encrypt
10 3 (0.52%) Red Hat
10 3 (0.52%) Tableau