Period
to 17 January 2021

The following table provides summary statistics for contract job vacancies advertised in the City of 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 17 January 2021 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)
Central London > City of London
6 months to
17 Jan 2021
Same period 2020 Same period 2019
Rank 13 10 7
Rank change year-on-year -3 -3 +1
Contract jobs citing JavaScript 190 542 923
As % of all contract jobs advertised in the City of London 9.35% 10.91% 13.57%
As % of the Programming Languages category 18.74% 22.58% 25.09%
Number of daily rates quoted 199 443 793
Median daily rate £550 £525 £500
Median daily rate % change year-on-year +4.76% +5.00% +2.04%
10th Percentile £323 £363 £375
90th Percentile £675 £650 £663
Central London median daily rate £550 £525 £500
% change year-on-year +4.76% +5.00% +5.26%
Number of hourly rates quoted 0 4 1
Median hourly rate - £48.50 £19.00
Median hourly rate % change year-on-year - +155.26% -29.86%
Central London median hourly rate - £48.50 £19.00
% change year-on-year - +155.26% -29.86%

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 the City of London with a requirement for coding skills.

All Programming Languages
City of London
Contract vacancies with a requirement for coding skills 1,014 2,400 3,679
As % of all contract IT jobs advertised in the City of London 49.90% 48.29% 54.08%
Number of daily rates quoted 780 1,942 3,057
Median daily rate £550 £525 £525
Median daily rate % change year-on-year +4.76% - -
10th Percentile £356 £388 £381
90th Percentile £700 £688 £675
Central London median daily rate £545 £525 £525
% change year-on-year +3.81% - +2.44%
Number of hourly rates quoted 5 13 6
Median hourly rate £14.00 £47.50 £37.09
Median hourly rate % change year-on-year -70.53% +28.07% +36.91%
10th Percentile £12.75 £21.00 £18.32
90th Percentile £31.15 £55.00 £39.64
Median hourly rate £18.00 £36.25 £37.09
% change year-on-year -50.34% -2.26% +36.91%

JavaScript
Job Vacancy Trend in the City of London

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

Job vacancy trend for JavaScript in the City of London

JavaScript
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing JavaScript in the City of London.

Daily rate trend for JavaScript in the City of London

JavaScript
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing JavaScript in the City of London over the 6 months to 17 January 2021.

Daily rate histogram for JavaScript in the City of London

JavaScript
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing JavaScript in the City of London.

Hourly rate trend for JavaScript in the City of London

JavaScript
Contract Job Locations in the City of 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 City of London region over the 6 months to 17 January 2021. 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
London Bridge +9 1 £600 +4.35%
JavaScript
Central London

For the 6 months to 17 January 2021, 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 City of London region with a requirement for JavaScript.

1 88 (46.32%) HTML
2 74 (38.95%) Agile Software Development
3 72 (37.89%) CSS
4 68 (35.79%) React
5 63 (33.16%) AngularJS
6 59 (31.05%) HTML5
7 58 (30.53%) Java
8 56 (29.47%) TDD
9 50 (26.32%) REST
10 49 (25.79%) Node.js
10 49 (25.79%) Git (software)
11 48 (25.26%) Jenkins
12 47 (24.74%) Docker
12 47 (24.74%) Software Engineering
13 45 (23.68%) AWS
14 44 (23.16%) Finance
14 44 (23.16%) DevOps
14 44 (23.16%) Microservices
15 38 (20.00%) Azure
16 36 (18.95%) CSS3
16 36 (18.95%) Python
17 35 (18.42%) Web Services
17 35 (18.42%) Banking
18 33 (17.37%) Continuous Integration
18 33 (17.37%) TypeScript
19 31 (16.32%) Redux
20 30 (15.79%) Front End Development
21 29 (15.26%) SQL
22 28 (14.74%) Spring
23 25 (13.16%) PHP

JavaScript
Co-occurring IT Skills in the City of 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 9 (4.74%) Apache
2 8 (4.21%) Elasticsearch
3 7 (3.68%) Red Hat Fuse
4 5 (2.63%) nginx
5 4 (2.11%) IIS
6 3 (1.58%) Camunda
6 3 (1.58%) Confluence
7 2 (1.05%) Apache Spark
7 2 (1.05%) Appian
7 2 (1.05%) JBoss
7 2 (1.05%) Jupyter
7 2 (1.05%) Tornado
7 2 (1.05%) WordPress
8 1 (0.53%) Cloud Foundry
8 1 (0.53%) CMS
8 1 (0.53%) Oracle SOA Suite
Applications
1 1 (0.53%) Adobe Illustrator
1 1 (0.53%) InVision
1 1 (0.53%) Microsoft Excel
1 1 (0.53%) Photoshop
1 1 (0.53%) Sketch
1 1 (0.53%) Zeplin
Business Applications
1 5 (2.63%) Dynamics CRM
2 2 (1.05%) Magento
3 1 (0.53%) Dynamics AX
3 1 (0.53%) Dynamics NAV
3 1 (0.53%) Payment Gateway
Cloud Services
1 45 (23.68%) AWS
2 38 (20.00%) Azure
3 11 (5.79%) GCP
4 10 (5.26%) PaaS
4 10 (5.26%) SaaS
5 8 (4.21%) AWS CloudFormation
5 8 (4.21%) npm
6 6 (3.16%) Amazon ElastiCache
6 6 (3.16%) GitHub
6 6 (3.16%) Serverless
7 5 (2.63%) Amazon ECS
7 5 (2.63%) Amazon Kinesis
8 4 (2.11%) Dynamics 365
8 4 (2.11%) Power Platform
9 3 (1.58%) Apigee
9 3 (1.58%) AWS CodePipeline
9 3 (1.58%) AWS Lambda
9 3 (1.58%) Logic Apps
10 2 (1.05%) Amazon EC2
10 2 (1.05%) Amazon S3
Communications & Networking
1 1 (0.53%) DNS
1 1 (0.53%) Firewall
1 1 (0.53%) HTTP
1 1 (0.53%) HTTPS
1 1 (0.53%) SSL
Database & Business Intelligence
1 20 (10.53%) SQL Server
2 15 (7.89%) Relational Database
3 12 (6.32%) MongoDB
4 11 (5.79%) PostgreSQL
5 10 (5.26%) NoSQL
6 9 (4.74%) MySQL
6 9 (4.74%) RDBMS
7 4 (2.11%) Apache Hive
7 4 (2.11%) Redis
7 4 (2.11%) SQL Server Integration Services
8 3 (1.58%) Power BI
9 2 (1.05%) Amazon RDS
9 2 (1.05%) Big Data
9 2 (1.05%) BigQuery
9 2 (1.05%) Cloud Spanner
9 2 (1.05%) Tableau
10 1 (0.53%) Amazon DynamoDB
10 1 (0.53%) Couchbase
10 1 (0.53%) Hazelcast
10 1 (0.53%) SQL Server 2017
Development Applications
1 49 (25.79%) Git (software)
2 48 (25.26%) Jenkins
3 16 (8.42%) webpack
4 7 (3.68%) JIRA
4 7 (3.68%) MSBuild
4 7 (3.68%) TeamCity
5 6 (3.16%) Jasmine
5 6 (3.16%) Mocha
6 5 (2.63%) Cucumber
6 5 (2.63%) Grunt
6 5 (2.63%) gulp
6 5 (2.63%) Hudson
7 4 (2.11%) Team Foundation Server
8 3 (1.58%) GitLab
8 3 (1.58%) JMeter
8 3 (1.58%) Maven
8 3 (1.58%) Selenium
8 3 (1.58%) SonarQube
8 3 (1.58%) Subversion
9 2 (1.05%) Babel
General
1 44 (23.16%) Finance
2 35 (18.42%) Banking
3 10 (5.26%) Retail
4 9 (4.74%) Back Office
5 6 (3.16%) Front Office
6 4 (2.11%) Games
6 4 (2.11%) Investment Banking
6 4 (2.11%) Public Sector
7 2 (1.05%) Marketing
8 1 (0.53%) Aerospace
8 1 (0.53%) Manufacturing
8 1 (0.53%) Pharmaceutical
Job Titles
1 150 (78.95%) Developer
2 30 (15.79%) Full Stack Developer
3 25 (13.16%) Java Developer
4 23 (12.11%) React Developer
5 22 (11.58%) JavaScript Developer
6 21 (11.05%) Backend Developer
7 19 (10.00%) PHP Developer
8 18 (9.47%) Front End Developer (Client-Side Developer)
9 13 (6.84%) Angular Developer
9 13 (6.84%) Senior Developer
10 9 (4.74%) Architect
10 9 (4.74%) C# Developer
11 8 (4.21%) .NET Developer
11 8 (4.21%) Consultant
12 7 (3.68%) C# .NET Developer
13 6 (3.16%) DevOps Engineer
13 6 (3.16%) Python Developer
13 6 (3.16%) UI Developer
14 5 (2.63%) Applications Developer
14 5 (2.63%) Solutions Architect
Libraries, Frameworks & Software Standards
1 88 (46.32%) HTML
2 72 (37.89%) CSS
3 68 (35.79%) React
4 63 (33.16%) AngularJS
5 59 (31.05%) HTML5
6 50 (26.32%) REST
7 49 (25.79%) Node.js
8 36 (18.95%) CSS3
9 35 (18.42%) Web Services
10 31 (16.32%) Redux
11 28 (14.74%) Spring
12 25 (13.16%) Sass
13 23 (12.11%) Vue.js
14 22 (11.58%) LESS
15 21 (11.05%) Laravel
16 20 (10.53%) .NET
16 20 (10.53%) jQuery
17 19 (10.00%) Vuetify.js
18 18 (9.47%) GraphQL
19 16 (8.42%) Spring Boot
Miscellaneous
1 16 (8.42%) Enterprise Software
2 14 (7.37%) User Experience
3 13 (6.84%) Greenfield Project
4 12 (6.32%) Clustering
5 5 (2.63%) Analytical Skills
6 4 (2.11%) Self-Motivation
7 3 (1.58%) Blog
7 3 (1.58%) Cloud Native
7 3 (1.58%) Data Structures
7 3 (1.58%) Fixed Income
7 3 (1.58%) Mobile App
8 2 (1.05%) Algorithms
8 2 (1.05%) Credit Risk
8 2 (1.05%) Online Games
8 2 (1.05%) Renewable Energy
9 1 (0.53%) CMDB
9 1 (0.53%) Derivative
9 1 (0.53%) Linux Command Line
9 1 (0.53%) Private Cloud
9 1 (0.53%) Virtual Team
Operating Systems
1 16 (8.42%) Linux
2 4 (2.11%) Unix
2 4 (2.11%) Windows
3 3 (1.58%) Windows Server
4 1 (0.53%) Android
4 1 (0.53%) Apple iOS
4 1 (0.53%) Mac OS
Processes & Methodologies
1 74 (38.95%) Agile Software Development
2 56 (29.47%) TDD
3 47 (24.74%) Software Engineering
4 44 (23.16%) DevOps
4 44 (23.16%) Microservices
5 33 (17.37%) Continuous Integration
6 30 (15.79%) Front End Development
7 24 (12.63%) OO
8 23 (12.11%) MVC
9 22 (11.58%) Test Automation
10 21 (11.05%) Web Development
11 19 (10.00%) Performance Tuning
12 18 (9.47%) Scrum
13 17 (8.95%) Multithreading
14 14 (7.37%) Unit Testing
15 13 (6.84%) High Availability
16 12 (6.32%) BDD
16 12 (6.32%) Open Source
16 12 (6.32%) Scalability Testing
16 12 (6.32%) SDLC
Programming Languages
1 58 (30.53%) Java
2 36 (18.95%) Python
3 33 (17.37%) TypeScript
4 29 (15.26%) SQL
5 25 (13.16%) PHP
6 21 (11.05%) C#
7 14 (7.37%) Ruby
8 13 (6.84%) Go
9 12 (6.32%) ES6
9 12 (6.32%) Java 8
10 10 (5.26%) C++
11 8 (4.21%) Scala
12 7 (3.68%) Kotlin
13 5 (2.63%) PowerShell
14 3 (1.58%) C
14 3 (1.58%) VBScript
15 2 (1.05%) Bash Shell
15 2 (1.05%) ES7
16 1 (0.53%) Apple Swift
16 1 (0.53%) Clojure
Qualifications
1 14 (7.37%) SC Cleared
1 14 (7.37%) Security Cleared
2 5 (2.63%) Degree
3 3 (1.58%) Computer Science Degree
4 2 (1.05%) AWS Certification
5 1 (0.53%) DV Cleared
Quality Assurance & Compliance
1 6 (3.16%) QA
2 3 (1.58%) MiFID
3 2 (1.05%) WCAG
4 1 (0.53%) SLA
System Software
1 47 (24.74%) Docker
2 3 (1.58%) Ceph
2 3 (1.58%) NFS
3 2 (1.05%) Apache ZooKeeper
3 2 (1.05%) etcd
3 2 (1.05%) Varnish
4 1 (0.53%) Active Directory
4 1 (0.53%) VMware Infrastructure
4 1 (0.53%) vSphere
Systems Management
1 19 (10.00%) Kubernetes
2 7 (3.68%) Terraform
3 3 (1.58%) Ansible
3 3 (1.58%) Hadoop YARN
3 3 (1.58%) Mesos
3 3 (1.58%) RSA Archer
4 2 (1.05%) Consul
5 1 (0.53%) Opscode Chef
5 1 (0.53%) Puppet
5 1 (0.53%) Salt
5 1 (0.53%) Single Sign-On
5 1 (0.53%) vRealize
Vendors
1 13 (6.84%) Oracle
2 11 (5.79%) Microsoft
3 6 (3.16%) Google
4 3 (1.58%) Salesforce.com
4 3 (1.58%) ServiceNow
5 2 (1.05%) Adobe
5 2 (1.05%) Cloudera
5 2 (1.05%) Confluent
5 2 (1.05%) Hortonworks
5 2 (1.05%) Informatica
5 2 (1.05%) Splunk
6 1 (0.53%) Ab Initio
6 1 (0.53%) Alteryx
6 1 (0.53%) Autodesk
6 1 (0.53%) Bloomberg
6 1 (0.53%) Cognos
6 1 (0.53%) Maxymiser
6 1 (0.53%) SAP
6 1 (0.53%) UiPath
6 1 (0.53%) VMware