Period
to 30 September 2020

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 30 September 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)
Central London > City of London
6 months to
30 Sep 2020
Same period 2019 Same period 2018
Rank 14 8 7
Rank change year-on-year -6 -1 +1
Contract jobs citing JavaScript 148 746 956
As % of all contract jobs advertised in the City of London 8.24% 12.17% 13.92%
As % of the Programming Languages category 17.03% 24.56% 25.93%
Number of daily rates quoted 118 630 813
Median daily rate £511 £525 £500
Median daily rate % change year-on-year -2.62% +5.00% +0.50%
10th Percentile £306 £402 £363
90th Percentile £653 £645 £638
Central London median daily rate £510 £521 £500
% change year-on-year -2.16% +4.25% +5.26%
Number of hourly rates quoted 3 0 1
Median hourly rate £35.00 - £55.00
10th Percentile £33.20 - £47.50
90th Percentile £39.00 - £62.50
Central London median hourly rate £35.00 - £55.00

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 869 3,038 3,687
As % of all contract IT jobs advertised in the City of London 48.39% 49.55% 53.69%
Number of daily rates quoted 631 2,468 3,082
Median daily rate £525 £525 £525
10th Percentile £363 £400 £375
90th Percentile £690 £675 £688
Central London median daily rate £525 £525 £525
Number of hourly rates quoted 10 14 13
Median hourly rate £35.00 £22.42 £22.00
Median hourly rate % change year-on-year +56.15% +1.89% +2.33%
10th Percentile £21.08 £21.00 £12.65
90th Percentile £41.65 £54.23 £58.44
Median hourly rate £35.00 £22.50 £22.00
% change year-on-year +55.56% +2.27% +2.33%

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 30 September 2020.

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 30 September 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
London Bridge +7 1 £600 +14.29%
JavaScript
Central London

For the 6 months to 30 September 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 City of London region with a requirement for JavaScript.

1 66 (44.59%) CSS
2 65 (43.92%) HTML
3 50 (33.78%) Agile Software Development
4 49 (33.11%) Java
5 48 (32.43%) Finance
6 41 (27.70%) React
7 40 (27.03%) AngularJS
7 40 (27.03%) SQL
8 35 (23.65%) Node.js
9 34 (22.97%) HTML5
10 32 (21.62%) C#
10 32 (21.62%) .NET
10 32 (21.62%) Banking
10 32 (21.62%) Git (software)
11 31 (20.95%) Azure
11 31 (20.95%) Microservices
12 30 (20.27%) Front End Development
12 30 (20.27%) Python
13 29 (19.59%) SQL Server
13 29 (19.59%) TDD
13 29 (19.59%) Jenkins
14 28 (18.92%) REST
15 27 (18.24%) Docker
16 25 (16.89%) DevOps
17 24 (16.22%) TypeScript
17 24 (16.22%) AWS
18 21 (14.19%) jQuery
18 21 (14.19%) Continuous Integration
19 20 (13.51%) Web Services
19 20 (13.51%) CSS3

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 10 (6.76%) Elasticsearch
2 7 (4.73%) Apache Spark
3 6 (4.05%) Apache
3 6 (4.05%) Confluence
4 5 (3.38%) SharePoint
4 5 (3.38%) Tornado
5 4 (2.70%) IIS
5 4 (2.70%) nginx
6 3 (2.03%) Red Hat Fuse
6 3 (2.03%) WordPress
7 1 (0.68%) Apache Solr
7 1 (0.68%) Appian
7 1 (0.68%) CMS
7 1 (0.68%) JBoss
7 1 (0.68%) Oracle SOA Suite
7 1 (0.68%) Tomcat
Applications
1 8 (5.41%) Photoshop
2 5 (3.38%) Acrobat
3 4 (2.70%) Microsoft Excel
4 2 (1.35%) Microsoft PowerPoint
Business Applications
1 4 (2.70%) Dynamics CRM
2 2 (1.35%) Salesforce.com CRM
3 1 (0.68%) Dynamics AX
3 1 (0.68%) Dynamics NAV
3 1 (0.68%) Magento
Cloud Services
1 31 (20.95%) Azure
2 24 (16.22%) AWS
3 14 (9.46%) GCP
4 11 (7.43%) npm
5 9 (6.08%) Power Platform
6 6 (4.05%) GitHub
7 4 (2.70%) PaaS
7 4 (2.70%) SaaS
8 3 (2.03%) Cloud Computing
8 3 (2.03%) Dynamics 365
8 3 (2.03%) Serverless
9 2 (1.35%) Amazon EC2
9 2 (1.35%) Amazon ElastiCache
9 2 (1.35%) Amazon S3
9 2 (1.35%) Apigee
9 2 (1.35%) AWS CloudFormation
9 2 (1.35%) Logic Apps
10 1 (0.68%) Amazon Kinesis
10 1 (0.68%) AWS OpsWorks
10 1 (0.68%) Yarn
Communications & Networking
1 2 (1.35%) HTTP
2 1 (0.68%) Kerberos
Database & Business Intelligence
1 29 (19.59%) SQL Server
2 11 (7.43%) MySQL
2 11 (7.43%) PostgreSQL
3 10 (6.76%) SQL Server Integration Services
4 9 (6.08%) NoSQL
5 8 (5.41%) Big Data
5 8 (5.41%) Power BI
6 7 (4.73%) Relational Database
6 7 (4.73%) SQL Server Reporting Services
7 6 (4.05%) MongoDB
8 5 (3.38%) Apache Hive
9 4 (2.70%) SQL Server Analysis Services
10 2 (1.35%) BigQuery
10 2 (1.35%) Data Warehouse
10 2 (1.35%) HBase
10 2 (1.35%) OLAP
10 2 (1.35%) RDBMS
10 2 (1.35%) Redis
10 2 (1.35%) SQL Server 2008
10 2 (1.35%) SQLite
Development Applications
1 32 (21.62%) Git (software)
2 29 (19.59%) Jenkins
3 8 (5.41%) Hudson
3 8 (5.41%) JIRA
4 7 (4.73%) Team Foundation Server
5 6 (4.05%) GitLab
5 6 (4.05%) Jasmine
5 6 (4.05%) TeamCity
5 6 (4.05%) webpack
6 5 (3.38%) Cypress.io
6 5 (3.38%) MSBuild
6 5 (3.38%) ProC
7 4 (2.70%) gulp
7 4 (2.70%) Mocha
8 3 (2.03%) Subversion
9 2 (1.35%) git-flow
9 2 (1.35%) Maven
9 2 (1.35%) Selenium
9 2 (1.35%) Visual Studio
9 2 (1.35%) Visual Studio Team System
General
1 48 (32.43%) Finance
2 32 (21.62%) Banking
3 12 (8.11%) Front Office
4 7 (4.73%) Retail
5 6 (4.05%) Investment Banking
5 6 (4.05%) Public Sector
6 5 (3.38%) Back Office
7 4 (2.70%) Marketing
8 3 (2.03%) Law
9 2 (1.35%) International Banking
10 1 (0.68%) Local Government
10 1 (0.68%) Manufacturing
10 1 (0.68%) Pharmaceutical
Job Titles
1 108 (72.97%) Developer
2 23 (15.54%) React Developer
3 22 (14.86%) Full Stack Developer
4 20 (13.51%) Front End Developer (Client-Side Developer)
5 15 (10.14%) JavaScript Developer
6 13 (8.78%) Senior Developer
7 12 (8.11%) .NET Developer
7 12 (8.11%) Java Developer
8 11 (7.43%) Architect
9 10 (6.76%) C# Developer
9 10 (6.76%) PHP Developer
10 9 (6.08%) Backend Developer
10 9 (6.08%) C# .NET Developer
10 9 (6.08%) SQL Developer
11 8 (5.41%) Angular Developer
12 5 (3.38%) Data Engineer
12 5 (3.38%) Python Developer
12 5 (3.38%) Senior React Developer
12 5 (3.38%) SSIS Developer
12 5 (3.38%) UI Developer
Libraries, Frameworks & Software Standards
1 66 (44.59%) CSS
2 65 (43.92%) HTML
3 41 (27.70%) React
4 40 (27.03%) AngularJS
5 35 (23.65%) Node.js
6 34 (22.97%) HTML5
7 32 (21.62%) .NET
8 28 (18.92%) REST
9 21 (14.19%) jQuery
10 20 (13.51%) CSS3
10 20 (13.51%) Web Services
11 15 (10.14%) Vue.js
12 14 (9.46%) Redux
13 13 (8.78%) Sass
14 11 (7.43%) Laravel
15 10 (6.76%) Express
16 9 (6.08%) ASP.NET
16 9 (6.08%) JSON
16 9 (6.08%) Spring
17 8 (5.41%) LESS
Miscellaneous
1 18 (12.16%) User Experience
2 12 (8.11%) Analytical Skills
3 9 (6.08%) Enterprise Software
4 6 (4.05%) Greenfield Project
5 4 (2.70%) Clustering
5 4 (2.70%) Fixed Income
6 3 (2.03%) Credit Risk
7 2 (1.35%) Foreign Exchange (FX)
7 2 (1.35%) Management Information System
7 2 (1.35%) Mobile App
7 2 (1.35%) Social Media
7 2 (1.35%) Tandem
8 1 (0.68%) Algorithms
8 1 (0.68%) Data Centre
8 1 (0.68%) Data Structures
8 1 (0.68%) Digital Media
8 1 (0.68%) Mobile Payment
8 1 (0.68%) N-Tier
8 1 (0.68%) Private Cloud
8 1 (0.68%) Video on Demand
Operating Systems
1 15 (10.14%) Linux
2 6 (4.05%) Unix
3 5 (3.38%) Windows
4 3 (2.03%) Windows Server
5 2 (1.35%) Android
5 2 (1.35%) Mac OS X
6 1 (0.68%) Apple iOS
6 1 (0.68%) Mac OS
Processes & Methodologies
1 50 (33.78%) Agile Software Development
2 31 (20.95%) Microservices
3 30 (20.27%) Front End Development
4 29 (19.59%) TDD
5 25 (16.89%) DevOps
6 21 (14.19%) Continuous Integration
7 16 (10.81%) Scrum
8 15 (10.14%) Problem-Solving
8 15 (10.14%) Web Development
9 14 (9.46%) Software Engineering
10 13 (8.78%) BDD
10 13 (8.78%) MVC
11 12 (8.11%) Data Modelling
11 12 (8.11%) Open Source
11 12 (8.11%) Unit Testing
12 11 (7.43%) SDLC
13 10 (6.76%) Computer Science
13 10 (6.76%) OO
14 9 (6.08%) Multithreading
14 9 (6.08%) Test Automation
Programming Languages
1 49 (33.11%) Java
2 40 (27.03%) SQL
3 32 (21.62%) C#
4 30 (20.27%) Python
5 24 (16.22%) TypeScript
6 16 (10.81%) PHP
7 10 (6.76%) PowerShell
8 7 (4.73%) Scala
8 7 (4.73%) T-SQL
9 5 (3.38%) C
9 5 (3.38%) C++
9 5 (3.38%) Kotlin
10 4 (2.70%) Bash Shell
10 4 (2.70%) ES6
11 3 (2.03%) Go
11 3 (2.03%) Ruby
11 3 (2.03%) VBA
11 3 (2.03%) VBScript
12 2 (1.35%) Apex Code
12 2 (1.35%) Perl
Qualifications
1 9 (6.08%) Degree
1 9 (6.08%) Security Cleared
2 7 (4.73%) SC Cleared
3 3 (2.03%) Computer Science Degree
4 2 (1.35%) BPSS Clearance
5 1 (0.68%) DBS Check
Quality Assurance & Compliance
1 5 (3.38%) WCAG
2 3 (2.03%) QA
3 2 (1.35%) Solvency II
4 1 (0.68%) Disclosure Scotland
4 1 (0.68%) MiFID
4 1 (0.68%) SLA
System Software
1 27 (18.24%) Docker
2 4 (2.70%) Active Directory
Systems Management
1 8 (5.41%) Ansible
2 5 (3.38%) Kubernetes
2 5 (3.38%) Terraform
3 3 (2.03%) Grafana
3 3 (2.03%) RSA Archer
4 2 (1.35%) Opscode Chef
5 1 (0.68%) Prometheus
5 1 (0.68%) Puppet
Vendors
1 16 (10.81%) Microsoft
2 9 (6.08%) Google
3 7 (4.73%) Oracle
4 6 (4.05%) Adobe
4 6 (4.05%) Salesforce.com
5 5 (3.38%) Cloudera
5 5 (3.38%) Hortonworks
5 5 (3.38%) Tableau
6 3 (2.03%) ServiceNow
7 2 (1.35%) Cognos
7 2 (1.35%) Informatica
7 2 (1.35%) MuleSoft
7 2 (1.35%) Salesforce Marketing Cloud
7 2 (1.35%) Splunk
7 2 (1.35%) WSO2
8 1 (0.68%) Ab Initio
8 1 (0.68%) Nintex
8 1 (0.68%) Optimizely
8 1 (0.68%) SaltStack
8 1 (0.68%) Sybase