The following table provides summary statistics for contract job vacancies advertised in Belfast with a requirement for JSON skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JSON over the 3 months to 29 June 2017 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.

JSON
County Antrim > Belfast
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 29 - 18
Rank change year-on-year - 0  
Contract jobs citing JSON 38 0 2
As % of all contract IT jobs advertised in Belfast 11.48% - 2.56%
As % of the Libraries, Frameworks & Software Standards category 22.22% - 9.09%
Number of daily rates quoted 32 0 1
Belfast median daily rate £400 - £375
10th Percentile £263 - £363
90th Percentile £424 - £388
County Antrim median daily rate £400 - £375
Number of hourly rates quoted 0 0 0
Belfast median hourly rate - - -
County Antrim median hourly rate - - -

JSON is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Belfast with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
Belfast
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 171 25 22
As % of all contract IT job vacancies advertised in Belfast 51.66% 28.41% 28.21%
Number of daily rates quoted 549 46 25
Belfast median daily rate £410 £398 £375
Median daily rate % change year-on-year +3.07% +6.06%  
10th Percentile £263 £300 £182
90th Percentile £450 £419 £469
County Antrim median daily rate £413 £398 £375
% change year-on-year +3.70% +6.06%  
Number of hourly rates quoted 1 0 3
Belfast median hourly rate £13.78 - £32.00
County Antrim median hourly rate £13.78 - £32.00

JSON
Job Vacancy Trend in Belfast

Job postings citing JSON as a percentage of all IT jobs advertised in Belfast.

Job vacancy trend for JSON in Belfast

JSON
Contractor Daily Rate Trend in Belfast

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JSON in Belfast.

Contractor daily rate trend for JSON in Belfast

JSON
Contractor Daily Rate Histogram in Belfast

The daily rate distribution of IT jobs citing JSON in Belfast over the 3 months to 29 June 2017.

Contractor daily rate histogram for JSON in Belfast

For the 6 months to 29 June 2017, IT contractor jobs citing JSON also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Belfast region with a requirement for JSON.

1 43 (74.14%) XML
2 42 (72.41%) Web Services
3 34 (58.62%) Finance
4 33 (56.90%) C#
4 33 (56.90%) JavaScript
4 33 (56.90%) .NET
5 32 (55.17%) SQL
5 32 (55.17%) WCF
6 31 (53.45%) Banking
7 29 (50.00%) HTML
7 29 (50.00%) CSS
8 26 (44.83%) ASP.NET Web API
9 25 (43.10%) MVC
10 24 (41.38%) RESTful
11 23 (39.66%) PL/SQL
12 22 (37.93%) Twitter Bootstrap
13 21 (36.21%) HTML5
14 18 (31.03%) Oracle
14 18 (31.03%) SQL Server
14 18 (31.03%) Multithreading
14 18 (31.03%) Agile Software Development
14 18 (31.03%) .NET Framework
15 17 (29.31%) AngularJS
16 16 (27.59%) jQuery
16 16 (27.59%) ASP.NET
16 16 (27.59%) SOA
17 15 (25.86%) Microsoft
17 15 (25.86%) CRM
17 15 (25.86%) Siebel
17 15 (25.86%) Java

JSON
Co-occurring IT Skills in Belfast 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 (17.24%) Oracle SOA Suite
2 8 (13.79%) WebSphere
3 2 (3.45%) Apache Solr
3 2 (3.45%) Confluence
3 2 (3.45%) Elasticsearch
4 1 (1.72%) Apache Spark
4 1 (1.72%) IIS
4 1 (1.72%) Jetty
4 1 (1.72%) Tomcat
Applications
1 1 (1.72%) Microsoft Excel
Cloud Services
1 3 (5.17%) Sumo Logic
2 1 (1.72%) Amazon AWS
2 1 (1.72%) Amazon EC2
2 1 (1.72%) Amazon S3
2 1 (1.72%) Amazon SQS
2 1 (1.72%) AWS Lambda
2 1 (1.72%) GitHub
2 1 (1.72%) Route 53
Database & Business Intelligence
1 18 (31.03%) SQL Server
2 13 (22.41%) Relational Database
3 4 (6.90%) Big Data
4 2 (3.45%) Apache Cassandra
4 2 (3.45%) Endeca
4 2 (3.45%) Hadoop
4 2 (3.45%) MongoDB
4 2 (3.45%) NoSQL
5 1 (1.72%) Amazon DynamoDB
5 1 (1.72%) Amazon RDS
5 1 (1.72%) Apache Hive
5 1 (1.72%) IDOL
5 1 (1.72%) SQL Server 2008
Development Applications
1 12 (20.69%) JIRA
2 8 (13.79%) Bitbucket
3 7 (12.07%) Visual Studio
4 6 (10.34%) NUnit
5 4 (6.90%) Team Foundation Server
6 2 (3.45%) Ant
6 2 (3.45%) Apache Ivy
6 2 (3.45%) Babel
6 2 (3.45%) Git (software)
6 2 (3.45%) Jasmine
6 2 (3.45%) JUnit
6 2 (3.45%) Karma Test Runner
6 2 (3.45%) Maven
6 2 (3.45%) PhantomJS
6 2 (3.45%) Subversion
7 1 (1.72%) Jenkins
7 1 (1.72%) Octopus Deploy
General
1 34 (58.62%) Finance
2 31 (53.45%) Banking
3 11 (18.97%) Front Office
4 2 (3.45%) Investment Banking
Job Titles
1 55 (94.83%) Developer
2 20 (34.48%) C# Developer
3 18 (31.03%) JavaScript Developer
4 15 (25.86%) Senior Developer
4 15 (25.86%) UI Developer
5 12 (20.69%) Java Developer
6 11 (18.97%) .NET Developer
7 9 (15.52%) Angular Developer
8 8 (13.79%) Senior Java Developer
8 8 (13.79%) Senior JavaScript Developer
9 7 (12.07%) Full Stack Developer
9 7 (12.07%) HTML CSS Developer
9 7 (12.07%) HTML Developer
9 7 (12.07%) Senior Full Stack Developer
10 6 (10.34%) Senior C# Developer
11 5 (8.62%) C# WPF Developer
11 5 (8.62%) C++ Developer
11 5 (8.62%) C++/C# Developer
11 5 (8.62%) Senior C++ Developer
11 5 (8.62%) WPF Developer
Libraries, Frameworks & Software Standards
1 43 (74.14%) XML
2 42 (72.41%) Web Services
3 33 (56.90%) .NET
4 32 (55.17%) WCF
5 29 (50.00%) CSS
5 29 (50.00%) HTML
6 26 (44.83%) ASP.NET Web API
7 24 (41.38%) RESTful
8 22 (37.93%) Twitter Bootstrap
9 21 (36.21%) HTML5
10 18 (31.03%) .NET Framework
11 17 (29.31%) AngularJS
12 16 (27.59%) ASP.NET
12 16 (27.59%) jQuery
13 11 (18.97%) ADO.NET
13 11 (18.97%) WF
13 11 (18.97%) WPF
14 9 (15.52%) Hibernate
14 9 (15.52%) REST
14 9 (15.52%) Spring
Miscellaneous
1 15 (25.86%) User Experience
2 11 (18.97%) Algorithms
3 7 (12.07%) Virtual Team
4 3 (5.17%) Derivative
5 2 (3.45%) Computer Science
5 2 (3.45%) Data Structures
5 2 (3.45%) Equities
5 2 (3.45%) Equity Derivative
5 2 (3.45%) Linux Command Line
6 1 (1.72%) Analytical Skills
6 1 (1.72%) Enterprise Software
6 1 (1.72%) Greenfield Project
6 1 (1.72%) Smart Energy
Operating Systems
1 3 (5.17%) Unix
2 2 (3.45%) Linux
Processes & Methodologies
1 25 (43.10%) MVC
2 18 (31.03%) Agile Software Development
2 18 (31.03%) Multithreading
3 16 (27.59%) SOA
4 15 (25.86%) CRM
5 12 (20.69%) OO
6 11 (18.97%) Memory Management
6 11 (18.97%) Scrum
7 10 (17.24%) OOP
8 8 (13.79%) Unit Testing
9 7 (12.07%) Concurrent Programming
9 7 (12.07%) Data Modelling
10 6 (10.34%) Issue Tracking
10 6 (10.34%) Risk Management
11 5 (8.62%) Process Improvement
12 3 (5.17%) Analytics
12 3 (5.17%) Software Engineering
12 3 (5.17%) TDD
13 2 (3.45%) Coaching
13 2 (3.45%) Data Analytics
Programming Languages
1 33 (56.90%) C#
1 33 (56.90%) JavaScript
2 32 (55.17%) SQL
3 23 (39.66%) PL/SQL
4 15 (25.86%) Java
5 9 (15.52%) TypeScript
6 7 (12.07%) T-SQL
7 6 (10.34%) C
7 6 (10.34%) C++
7 6 (10.34%) C++/CLI
8 2 (3.45%) ECMAScript
8 2 (3.45%) ES6
8 2 (3.45%) Python
9 1 (1.72%) Perl
9 1 (1.72%) VBA
9 1 (1.72%) VC++
Qualifications
1 2 (3.45%) Computer Science Degree
1 2 (3.45%) Degree
Quality Assurance & Compliance
1 6 (10.34%) QA
System Software
1 1 (1.72%) HDFS
Vendors
1 18 (31.03%) Oracle
2 15 (25.86%) Microsoft
2 15 (25.86%) Siebel
3 12 (20.69%) Sybase
4 6 (10.34%) Google
4 6 (10.34%) Perforce
4 6 (10.34%) Twitter
5 2 (3.45%) Atlassian
5 2 (3.45%) Murex