Period
to 9 July 2020

The following table provides summary statistics for permanent job vacancies advertised in Hertfordshire with a requirement for JavaScript skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited JavaScript over the 6 months to 9 July 2020 with a comparison to the same period in the previous 2 years.

JavaScript (including ECMAScript)
East of England > Hertfordshire
6 months to
9 Jul 2020
Same period 2019 Same period 2018
Rank 8 9 7
Rank change year-on-year +1 -2 +1
Permanent jobs citing JavaScript 177 383 739
As % of all permanent jobs advertised in Hertfordshire 14.53% 12.97% 15.83%
As % of the Programming Languages category 29.02% 29.53% 30.54%
Number of salaries quoted 188 391 710
Median annual salary £55,000 £50,150 £50,000
Median salary % change year-on-year +9.67% +0.30% +11.11%
10th Percentile £32,500 £36,250 £33,750
90th Percentile £70,750 £68,750 £66,250
East of England median annual salary £47,500 £47,500 £45,000
% change year-on-year - +5.56% +5.88%

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

All Programming Languages
Hertfordshire
Permanent vacancies with a requirement for coding skills 610 1,297 2,420
As % of all permanent IT jobs advertised in Hertfordshire 50.08% 43.92% 51.83%
Number of salaries quoted 513 988 2,070
Median annual salary £52,500 £50,000 £50,000
Median salary % change year-on-year +5.00% - +6.38%
10th Percentile £32,500 £31,250 £31,250
90th Percentile £72,250 £70,000 £72,500
East of England median annual salary £47,500 £50,000 £47,500
% change year-on-year -5.00% +5.26% +5.56%

JavaScript
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for JavaScript in Hertfordshire

JavaScript
Salary Trend in Hertfordshire

3-month moving average salary quoted in jobs citing JavaScript in Hertfordshire.

Salary trend for JavaScript in Hertfordshire

JavaScript
Salary Histogram in Hertfordshire

Salary distribution for jobs citing JavaScript in Hertfordshire over the 6 months to 9 July 2020.

Salary histogram for JavaScript in Hertfordshire

JavaScript
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing JavaScript within the Hertfordshire region over the 6 months to 9 July 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
St Albans +1 45 £57,500 +21.05% 7
Watford -8 39 £56,250 +2.27% 4
Bishop's Stortford -2 17 £45,000 +12.50% 2
Letchworth +14 15 £40,000 -
Hemel Hempstead -1 12 £55,000 - 4
Stevenage -8 8 £65,000 +36.84% 3
Borehamwood +3 7 £47,500 -13.64% 2
Welwyn Garden City +20 5 £67,500 -3.57% 1
Royston +8 4 £27,500 - 4
Hatfield +14 3 £27,500 -43.59% 3
Potters Bar +2 2 £27,500 -32.93%
Harpenden +7 1 £65,000 +79.31% 1
Hoddesdon - 1 £40,000 -
JavaScript
East of England

For the 6 months to 9 July 2020, IT 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 permanent job ads across the Hertfordshire region with a requirement for JavaScript.

1 111 (62.71%) CSS
1 111 (62.71%) Agile Software Development
2 107 (60.45%) HTML
3 93 (52.54%) AngularJS
4 64 (36.16%) React
4 64 (36.16%) .NET
5 63 (35.59%) C#
6 59 (33.33%) Azure
7 57 (32.20%) Web Development
7 57 (32.20%) Node.js
8 55 (31.07%) HTML5
9 54 (30.51%) SQL
10 50 (28.25%) Java
10 50 (28.25%) Scrum
11 47 (26.55%) MVC
12 45 (25.42%) TypeScript
13 44 (24.86%) Vue.js
14 43 (24.29%) Git (software)
15 42 (23.73%) Python
15 42 (23.73%) Front End Development
16 41 (23.16%) Unit Testing
17 40 (22.60%) Web Services
18 39 (22.03%) RESTful
19 38 (21.47%) E-Commerce
19 38 (21.47%) Sass
20 37 (20.90%) CSS3
21 36 (20.34%) AWS
22 34 (19.21%) Retail
23 32 (18.08%) Continuous Integration
24 30 (16.95%) jQuery

JavaScript
Co-occurring IT Skills in Hertfordshire 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 12 (6.78%) Confluence
2 5 (2.82%) Oracle Workflow
3 4 (2.26%) WordPress
4 3 (1.69%) Apache
4 3 (1.69%) CMS
4 3 (1.69%) Sitecore CMS
5 2 (1.13%) Alfresco
5 2 (1.13%) IIS
5 2 (1.13%) Tomcat
5 2 (1.13%) WebSphere
6 1 (0.56%) Documentum
6 1 (0.56%) Elasticsearch
6 1 (0.56%) NServiceBus
Applications
1 12 (6.78%) InVision
1 12 (6.78%) Photoshop
1 12 (6.78%) Zeplin
2 11 (6.21%) Sketch
3 4 (2.26%) Adobe XD
Business Applications
1 9 (5.08%) Magento
2 2 (1.13%) Shopify
Cloud Services
1 59 (33.33%) Azure
2 36 (20.34%) AWS
3 14 (7.91%) GCP
4 13 (7.34%) Serverless
5 12 (6.78%) SaaS
6 6 (3.39%) npm
7 5 (2.82%) GitHub
8 3 (1.69%) AWS Lambda
9 2 (1.13%) Cloud Computing
10 1 (0.56%) Adobe Creative Cloud
10 1 (0.56%) Amazon CloudWatch
10 1 (0.56%) Azure Data Factory
10 1 (0.56%) Heroku
10 1 (0.56%) PaaS
10 1 (0.56%) Power Platform
10 1 (0.56%) Trello
Communications & Networking
1 6 (3.39%) HTTP
2 3 (1.69%) RS-232
2 3 (1.69%) RS-485
2 3 (1.69%) TCP/IP
3 2 (1.13%) Internet
4 1 (0.56%) Firewall
4 1 (0.56%) Skype
Database & Business Intelligence
1 26 (14.69%) MySQL
2 24 (13.56%) SQL Server
3 8 (4.52%) PostgreSQL
3 8 (4.52%) Relational Database
4 7 (3.95%) NoSQL
5 4 (2.26%) Amazon DynamoDB
5 4 (2.26%) BigQuery
6 3 (1.69%) MongoDB
6 3 (1.69%) QlikView
6 3 (1.69%) SQLite
7 2 (1.13%) SQL Server Integration Services
7 2 (1.13%) SQL Server Reporting Services
8 1 (0.56%) Amazon Redshift
8 1 (0.56%) Data Mining
8 1 (0.56%) Data Warehouse
8 1 (0.56%) MariaDB
8 1 (0.56%) Power BI
8 1 (0.56%) Redis
8 1 (0.56%) Snowflake Schema
8 1 (0.56%) SQL Server Analysis Services
Development Applications
1 43 (24.29%) Git (software)
2 28 (15.82%) Grunt
3 22 (12.43%) JIRA
4 17 (9.60%) Jenkins
5 14 (7.91%) gulp
5 14 (7.91%) webpack
6 10 (5.65%) Jasmine
6 10 (5.65%) Karma Test Runner
7 8 (4.52%) Subversion
7 8 (4.52%) TeamCity
8 7 (3.95%) Atlassian Bamboo
9 5 (2.82%) Ant
9 5 (2.82%) Eclipse
9 5 (2.82%) Gradle
9 5 (2.82%) Maven
9 5 (2.82%) Mocha
9 5 (2.82%) Team Foundation Server
10 4 (2.26%) Balsamiq
10 4 (2.26%) Bitbucket
10 4 (2.26%) Bower
General
1 34 (19.21%) Retail
2 27 (15.25%) Finance
3 17 (9.60%) Games
4 7 (3.95%) Legal
5 3 (1.69%) Law
5 3 (1.69%) Police
6 2 (1.13%) Back Office
7 1 (0.56%) Advertising
7 1 (0.56%) Automotive
7 1 (0.56%) Manufacturing
7 1 (0.56%) Telecoms
Job Titles
1 153 (86.44%) Developer
2 37 (20.90%) Senior Developer
3 32 (18.08%) .NET Developer
4 31 (17.51%) Front End Developer (Client-Side Developer)
5 25 (14.12%) Web Developer
6 21 (11.86%) Java Developer
6 21 (11.86%) Lead Developer
7 19 (10.73%) React Developer
8 18 (10.17%) C# Developer
9 17 (9.60%) Software Developer
10 15 (8.47%) Senior Front-End Developer
11 14 (7.91%) E-Commerce Developer
11 14 (7.91%) JavaScript Developer
12 11 (6.21%) Senior E-Commerce Developer
12 11 (6.21%) Senior Java Developer
12 11 (6.21%) Team Leader
13 9 (5.08%) .NET Software Developer
13 9 (5.08%) C# .NET Developer
14 8 (4.52%) Full Stack Developer
14 8 (4.52%) Senior .NET Developer
Libraries, Frameworks & Software Standards
1 111 (62.71%) CSS
2 107 (60.45%) HTML
3 93 (52.54%) AngularJS
4 64 (36.16%) .NET
4 64 (36.16%) React
5 57 (32.20%) Node.js
6 55 (31.07%) HTML5
7 44 (24.86%) Vue.js
8 40 (22.60%) Web Services
9 39 (22.03%) RESTful
10 38 (21.47%) Sass
11 37 (20.90%) CSS3
12 30 (16.95%) jQuery
13 25 (14.12%) ASP.NET
14 24 (13.56%) Spring
15 23 (12.99%) ASP.NET Web API
16 21 (11.86%) Hibernate
16 21 (11.86%) LESS
17 19 (10.73%) ASP.NET MVC
17 19 (10.73%) XHTML
Miscellaneous
1 16 (9.04%) Analytical Skills
1 16 (9.04%) User Experience
2 11 (6.21%) Mobile App
3 7 (3.95%) W3C
4 6 (3.39%) Greenfield Project
5 4 (2.26%) Self-Motivation
6 3 (1.69%) Vector Graphics
7 2 (1.13%) Embedded Systems
8 1 (0.56%) Acoustics
8 1 (0.56%) Client/Server
8 1 (0.56%) Data Structures
8 1 (0.56%) Social Media
8 1 (0.56%) Xbox
Operating Systems
1 25 (14.12%) Linux
2 18 (10.17%) Windows
3 8 (4.52%) Android
3 8 (4.52%) Apple iOS
4 1 (0.56%) Mac OS
Processes & Methodologies
1 111 (62.71%) Agile Software Development
2 57 (32.20%) Web Development
3 50 (28.25%) Scrum
4 47 (26.55%) MVC
5 42 (23.73%) Front End Development
6 41 (23.16%) Unit Testing
7 38 (21.47%) E-Commerce
8 32 (18.08%) Continuous Integration
9 28 (15.82%) TDD
10 25 (14.12%) Problem-Solving
11 23 (12.99%) Test Automation
12 21 (11.86%) DevOps
12 21 (11.86%) OO
12 21 (11.86%) Project Management
13 19 (10.73%) Multithreading
14 18 (10.17%) Microservices
14 18 (10.17%) Open Source
15 17 (9.60%) Continuous Delivery
15 17 (9.60%) Kanban
16 16 (9.04%) Sprint Planning
Programming Languages
1 63 (35.59%) C#
2 54 (30.51%) SQL
3 50 (28.25%) Java
4 45 (25.42%) TypeScript
5 42 (23.73%) Python
6 28 (15.82%) PHP
7 15 (8.47%) Java 8
8 9 (5.08%) ES6
9 7 (3.95%) T-SQL
10 4 (2.26%) Ruby
11 3 (1.69%) C
11 3 (1.69%) Embedded C
11 3 (1.69%) F#
12 2 (1.13%) Bash Shell
12 2 (1.13%) C++
12 2 (1.13%) Kotlin
12 2 (1.13%) R
13 1 (0.56%) Data Analysis Expressions (DAX)
13 1 (0.56%) Go
13 1 (0.56%) PHP 7
Qualifications
1 18 (10.17%) Degree
2 10 (5.65%) Computer Science Degree
3 4 (2.26%) Postgraduate
4 3 (1.69%) HND
5 2 (1.13%) SC Cleared
5 2 (1.13%) Security Cleared
6 1 (0.56%) ISTQB
6 1 (0.56%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 8 (4.52%) QA
2 1 (0.56%) Data Quality
2 1 (0.56%) ISO/IEC 27001
2 1 (0.56%) PCI DSS
System Software
1 14 (7.91%) Docker
2 1 (0.56%) Active Directory
Systems Management
1 4 (2.26%) Opscode Chef
2 3 (1.69%) Kubernetes
3 1 (0.56%) Ansible
3 1 (0.56%) Kibana
3 1 (0.56%) logstash
3 1 (0.56%) Prometheus
3 1 (0.56%) Puppet
3 1 (0.56%) Terraform
Vendors
1 14 (7.91%) Oracle
2 10 (5.65%) Google
2 10 (5.65%) Microsoft
3 9 (5.08%) Zend
4 5 (2.82%) Adobe
4 5 (2.82%) hybris
5 3 (1.69%) Atlassian
5 3 (1.69%) DevExpress
5 3 (1.69%) Sitecore
5 3 (1.69%) Tableau
6 2 (1.13%) IBM
7 1 (0.56%) Databricks
7 1 (0.56%) Sencha
7 1 (0.56%) Splunk
7 1 (0.56%) Talend
7 1 (0.56%) VMware
7 1 (0.56%) Xamarin