Period
to 17 February 2019

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for API Development skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited API Development over the 6 months to 17 February 2019 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.

API Development
East of England > Hertfordshire
6 months to
17 Feb 2019
Same period 2018 Same period 2017
Rank 81 92 97
Rank change year-on-year +11 +5 -7
Contract jobs citing API Development 11 16 3
As % of all contract IT jobs advertised in Hertfordshire 0.80% 1.04% 0.22%
As % of the Processes & Methodologies category 0.98% 1.25% 0.28%
Number of daily rates quoted 10 13 2
Hertfordshire median daily rate £379 £425 £394
Median daily rate % change year-on-year -10.88% +7.94% +45.83%
10th Percentile £325 £313 £382
90th Percentile £438 £538 £411
East of England median daily rate £388 £380 £430
% change year-on-year +1.97% -11.63% +7.50%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate - - -

API Development is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for process or methodology skills.

All Process and Methodology Skills
Hertfordshire
Contract vacancies with a requirement for process or methodology skills 1,122 1,278 1,070
As % of all contract IT jobs advertised in Hertfordshire 81.30% 82.99% 79.55%
Number of daily rates quoted 659 637 599
Hertfordshire median daily rate £425 £400 £425
Median daily rate % change year-on-year +6.25% -5.88% +3.03%
10th Percentile £218 £206 £213
90th Percentile £570 £575 £552
East of England median daily rate £448 £425 £400
% change year-on-year +5.29% +6.25% -
Number of hourly rates quoted 61 57 57
Hertfordshire median hourly rate £27.00 £19.00 £39.70
Median hourly rate % change year-on-year +42.11% -52.14% +84.65%
10th Percentile £11.17 £12.98 £10.93
90th Percentile £66.81 £47.35 £53.23
East of England median hourly rate £17.85 £35.00 £32.50
% change year-on-year -49.00% +7.69% +8.33%

API Development
Job Vacancy Trend in Hertfordshire

Job postings citing API Development as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for API Development in Hertfordshire

API Development
Contractor Daily Rate Trend in Hertfordshire

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing API Development in Hertfordshire.

Contractor daily rate trend for API Development in Hertfordshire

API Development
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing API Development within the Hertfordshire region over the 6 months to 17 February 2019. 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
Watford +11 4 £350 -17.65%
Hitchin - 4 £425 -
API Development
East of England

For the 6 months to 17 February 2019, IT contractor jobs citing API Development 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 Hertfordshire region with a requirement for API Development.

1 8 (72.73%) Finance
1 8 (72.73%) Agile Software Development
2 5 (45.45%) REST
2 5 (45.45%) Web Services
2 5 (45.45%) Virtual Machines
3 4 (36.36%) SOAP
3 4 (36.36%) XQuery
3 4 (36.36%) CA
3 4 (36.36%) C#
3 4 (36.36%) .NET
3 4 (36.36%) ASP.NET
3 4 (36.36%) .NET Framework
4 3 (27.27%) CSS
4 3 (27.27%) HTML
4 3 (27.27%) JavaScript
4 3 (27.27%) jQuery
4 3 (27.27%) AngularJS
4 3 (27.27%) React
5 2 (18.18%) LINQ
5 2 (18.18%) SDLC
5 2 (18.18%) ASP.NET Web API
5 2 (18.18%) Microsoft Azure
5 2 (18.18%) Amazon AWS
5 2 (18.18%) ASP.NET MVC
5 2 (18.18%) Big Data
5 2 (18.18%) Test Automation
5 2 (18.18%) Entity Framework
5 2 (18.18%) Node.js
5 2 (18.18%) Visual Studio
5 2 (18.18%) XML

API Development
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:

Cloud Services
1 2 (18.18%) Amazon AWS
1 2 (18.18%) Microsoft Azure
2 1 (9.09%) Cloud Computing
2 1 (9.09%) GitHub
2 1 (9.09%) SaaS
Database & Business Intelligence
1 2 (18.18%) Big Data
2 1 (9.09%) CouchDB
2 1 (9.09%) MongoDB
2 1 (9.09%) MySQL
2 1 (9.09%) NoSQL
2 1 (9.09%) PostgreSQL
2 1 (9.09%) Redis
Development Applications
1 2 (18.18%) Visual Studio
2 1 (9.09%) Git (software)
2 1 (9.09%) Mocha
General
1 8 (72.73%) Finance
2 1 (9.09%) French Language
2 1 (9.09%) German Language
2 1 (9.09%) Retail
2 1 (9.09%) Spanish Language
2 1 (9.09%) Swedish Language
Job Titles
1 10 (90.91%) Developer
2 4 (36.36%) .NET Developer
2 4 (36.36%) Senior Developer
3 2 (18.18%) Angular Developer
3 2 (18.18%) Full Stack Developer
4 1 (9.09%) Architect
4 1 (9.09%) AWS Architect
4 1 (9.09%) AWS Solutions Architect
4 1 (9.09%) C# .NET Developer
4 1 (9.09%) C# Developer
4 1 (9.09%) Node.js Developer
4 1 (9.09%) React Developer
4 1 (9.09%) SaaS Architect
4 1 (9.09%) Solutions Architect
4 1 (9.09%) Web Architect
Libraries, Frameworks & Software Standards
1 5 (45.45%) REST
1 5 (45.45%) Web Services
2 4 (36.36%) .NET
2 4 (36.36%) .NET Framework
2 4 (36.36%) ASP.NET
2 4 (36.36%) SOAP
3 3 (27.27%) AngularJS
3 3 (27.27%) CSS
3 3 (27.27%) HTML
3 3 (27.27%) jQuery
3 3 (27.27%) React
4 2 (18.18%) Ajax
4 2 (18.18%) ASP.NET MVC
4 2 (18.18%) ASP.NET Web API
4 2 (18.18%) Entity Framework
4 2 (18.18%) LINQ
4 2 (18.18%) Node.js
4 2 (18.18%) RequireJS
4 2 (18.18%) Smart Contracts
4 2 (18.18%) XML
Miscellaneous
1 2 (18.18%) Greenfield Project
2 1 (9.09%) Analytical Skills
2 1 (9.09%) Mobile App
2 1 (9.09%) Public Cloud
Processes & Methodologies
1 8 (72.73%) Agile Software Development
2 2 (18.18%) MVC
2 2 (18.18%) SDLC
2 2 (18.18%) Test Automation
3 1 (9.09%) API Design
3 1 (9.09%) Competitor Analysis
3 1 (9.09%) Computer Science
3 1 (9.09%) Creative Problem-Solving
3 1 (9.09%) Data Analysis
3 1 (9.09%) Data-Driven Decision Making
3 1 (9.09%) Decision-Making
3 1 (9.09%) Front End Development
3 1 (9.09%) Market Research
3 1 (9.09%) Non-Blocking Code
3 1 (9.09%) Problem-Solving
3 1 (9.09%) Project Management
3 1 (9.09%) Web Development
Programming Languages
1 4 (36.36%) C#
1 4 (36.36%) XQuery
2 3 (27.27%) JavaScript
3 1 (9.09%) ES6
3 1 (9.09%) Java
3 1 (9.09%) SQL
Qualifications
1 1 (9.09%) Degree
System Software
1 5 (45.45%) Virtual Machines
2 1 (9.09%) Docker
Systems Management
1 1 (9.09%) Docker Swarm
1 1 (9.09%) Kubernetes
Vendors
1 4 (36.36%) CA
2 2 (18.18%) Microsoft