Period
to 21 May 2019

The following table provides summary statistics for contract job vacancies advertised in London 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 21 May 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
England > London
6 months to
21 May 2019
Same period 2018 Same period 2017
Rank 339 364 404
Rank change year-on-year +25 +40 +51
Contract jobs citing API Development 275 286 165
As % of all contract IT jobs advertised in London 0.68% 0.63% 0.42%
As % of the Processes & Methodologies category 0.77% 0.71% 0.48%
Number of daily rates quoted 220 208 130
London median daily rate £500 £481 £500
Median daily rate % change year-on-year +3.90% -3.75% +6.38%
10th Percentile £381 £363 £363
90th Percentile £675 £600 £613
England median daily rate £492 £475 £500
% change year-on-year +3.58% -5.00% +13.96%
Number of hourly rates quoted 1 0 1
London median hourly rate £22.50 - £27.50
10th Percentile £22.25 - £26.25
90th Percentile £22.75 - £28.75
England median hourly rate £22.50 £80.50 £33.25
% change year-on-year -72.05% +142.11% +7.26%

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 London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Contract vacancies with a requirement for process or methodology skills 35,776 40,104 34,248
As % of all contract IT jobs advertised in London 88.74% 87.92% 87.10%
Number of daily rates quoted 25,498 28,968 24,570
London median daily rate £520 £500 £475
Median daily rate % change year-on-year +4.00% +5.26% +5.56%
10th Percentile £338 £325 £313
90th Percentile £675 £675 £650
England median daily rate £475 £463 £450
% change year-on-year +2.70% +2.78% +5.88%
Number of hourly rates quoted 398 560 389
London median hourly rate £25.84 £25.00 £25.00
Median hourly rate % change year-on-year +3.34% - +19.05%
10th Percentile £12.75 £13.73 £12.25
90th Percentile £53.75 £51.57 £52.50
England median hourly rate £24.91 £22.00 £25.00
% change year-on-year +13.23% -12.00% +8.70%

API Development
Job Vacancy Trend in London

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

Job vacancy trend for API Development in London

API Development
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for API Development in London

API Development
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing API Development in London over the 6 months to 21 May 2019.

Contractor daily rate histogram for API Development in London

API Development
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing API Development in London.

Contractor hourly rate trend for API Development in London

API Development
Contract Job Locations in London

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 London region over the 6 months to 21 May 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
Central London -13 56 £500 +5.26% 9
West London +37 13 £500 +11.11%
South London +10 11 £450 +41.73%
East London -18 5 £600 +47.24% 3
API Development
England

For the 6 months to 21 May 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 London region with a requirement for API Development.

1 121 (44.00%) Agile Software Development
2 104 (37.82%) JavaScript
3 95 (34.55%) REST
4 91 (33.09%) Java
5 83 (30.18%) .NET
6 73 (26.55%) RESTful
7 65 (23.64%) AngularJS
8 64 (23.27%) Finance
9 63 (22.91%) Amazon AWS
10 60 (21.82%) C#
11 58 (21.09%) Node.js
12 56 (20.36%) HTML
13 54 (19.64%) Git (software)
14 52 (18.91%) Microservices
15 50 (18.18%) TDD
16 49 (17.82%) DevOps
17 48 (17.45%) SOAP
18 45 (16.36%) CSS
18 45 (16.36%) SQL
19 41 (14.91%) Scrum
19 41 (14.91%) Python
20 39 (14.18%) Banking
21 38 (13.82%) Jenkins
22 37 (13.45%) JSON
22 37 (13.45%) JIRA
22 37 (13.45%) SQL Server
22 37 (13.45%) MVC
23 34 (12.36%) Microsoft Azure
24 33 (12.00%) Test Automation
24 33 (12.00%) jQuery

API Development
Co-occurring IT Skills in 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 17 (6.18%) Apache
1 17 (6.18%) Confluence
2 7 (2.55%) Apache Spark
2 7 (2.55%) Elasticsearch
3 6 (2.18%) Mule
4 4 (1.45%) Cloud Foundry
4 4 (1.45%) Documentum
4 4 (1.45%) JBoss
5 3 (1.09%) Liferay
5 3 (1.09%) Mule ESB
5 3 (1.09%) NetWeaver
5 3 (1.09%) SharePoint
5 3 (1.09%) WildFly
6 2 (0.73%) Anypoint
6 2 (0.73%) Ethereum
6 2 (0.73%) Hyperledger
6 2 (0.73%) IIS
6 2 (0.73%) Oracle Workflow
6 2 (0.73%) WebLogic
6 2 (0.73%) WebSphere
Applications
1 2 (0.73%) Adobe Illustrator
1 2 (0.73%) Photoshop
1 2 (0.73%) Sketch
1 2 (0.73%) Zeplin
2 1 (0.36%) Microsoft Office
2 1 (0.36%) Microsoft Project
Business Applications
1 5 (1.82%) Salesforce.com CRM
1 5 (1.82%) SAP ERP
2 4 (1.45%) SAP Oil and Gas
2 4 (1.45%) SAP S/4HANA
3 2 (0.73%) Distributed Ledger
3 2 (0.73%) Oracle BPM
3 2 (0.73%) Payment Gateway
3 2 (0.73%) R3 Corda
4 1 (0.36%) Dynamics CRM
4 1 (0.36%) Oracle EBS
Cloud Services
1 63 (22.91%) Amazon AWS
2 34 (12.36%) Microsoft Azure
3 24 (8.73%) Apigee
4 17 (6.18%) Google Cloud Platform
5 12 (4.36%) GitHub
6 10 (3.64%) Serverless
7 9 (3.27%) PaaS
7 9 (3.27%) Power Platform
8 8 (2.91%) Amazon S3
8 8 (2.91%) SaaS
9 7 (2.55%) npm
10 6 (2.18%) AWS CloudFormation
10 6 (2.18%) AWS Lambda
11 2 (0.73%) Azure Active Directory
11 2 (0.73%) IaaS
11 2 (0.73%) iPaaS
11 2 (0.73%) Kong
11 2 (0.73%) Yarn
12 1 (0.36%) Boomi
12 1 (0.36%) Firebase
Communications & Networking
1 14 (5.09%) HTTP
2 10 (3.64%) SSL
3 4 (1.45%) Unified Communications
4 2 (0.73%) DNS
4 2 (0.73%) Internet
5 1 (0.36%) BIG-IP
5 1 (0.36%) H.323
5 1 (0.36%) SNMP
5 1 (0.36%) X.509
Database & Business Intelligence
1 37 (13.45%) SQL Server
2 32 (11.64%) NoSQL
3 22 (8.00%) MongoDB
4 13 (4.73%) PostgreSQL
5 12 (4.36%) Big Data
6 11 (4.00%) MySQL
7 9 (3.27%) Data Warehouse
7 9 (3.27%) Power BI
7 9 (3.27%) Redis
8 8 (2.91%) Amazon RDS
8 8 (2.91%) Apache Cassandra
8 8 (2.91%) JanusGraph
9 6 (2.18%) HBase
10 5 (1.82%) Cosmos DB
10 5 (1.82%) Relational Database
10 5 (1.82%) SQL Server Integration Services
11 4 (1.45%) Data Lake
11 4 (1.45%) HDInsight
11 4 (1.45%) SAP BW
11 4 (1.45%) Spotfire
Development Applications
1 54 (19.64%) Git (software)
2 38 (13.82%) Jenkins
3 37 (13.45%) JIRA
4 28 (10.18%) TeamCity
5 22 (8.00%) Maven
6 20 (7.27%) Selenium
7 17 (6.18%) Bitbucket
8 16 (5.82%) Cucumber
8 16 (5.82%) Visual Studio Team System
9 15 (5.45%) Visual Studio
10 11 (4.00%) gulp
11 10 (3.64%) Eclipse
11 10 (3.64%) Octopus Deploy
12 7 (2.55%) Jasmine
12 7 (2.55%) Karma Test Runner
12 7 (2.55%) webpack
13 5 (1.82%) SonarQube
13 5 (1.82%) SpecFlow
13 5 (1.82%) WebDriver
14 4 (1.45%) Subversion
General
1 64 (23.27%) Finance
2 39 (14.18%) Banking
3 24 (8.73%) Financial Institution
4 9 (3.27%) Marketing
5 8 (2.91%) Legal
6 7 (2.55%) Investment Banking
6 7 (2.55%) Retail
6 7 (2.55%) Telecoms
7 6 (2.18%) Retail Banking
8 5 (1.82%) Games
9 4 (1.45%) Law
10 3 (1.09%) Manufacturing
10 3 (1.09%) Publishing
11 2 (0.73%) Billing
12 1 (0.36%) Advertising
12 1 (0.36%) Electronics
12 1 (0.36%) Front Office
Job Titles
1 174 (63.27%) Developer
2 45 (16.36%) .NET Developer
3 31 (11.27%) Architect
4 26 (9.45%) C# Developer
5 24 (8.73%) Senior Developer
6 22 (8.00%) C# .NET Developer
7 20 (7.27%) Java Developer
8 18 (6.55%) Front End Developer (Client-Side Developer)
8 18 (6.55%) Technical Architect
9 14 (5.09%) Salesforce Developer
9 14 (5.09%) Tester
10 11 (4.00%) Full Stack Developer
10 11 (4.00%) Technical Leader
11 9 (3.27%) JavaScript Developer
11 9 (3.27%) Lead Developer
12 8 (2.91%) Java Architect
13 7 (2.55%) DevOps Engineer
13 7 (2.55%) Java Technical Architect
13 7 (2.55%) Project Manager
13 7 (2.55%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 95 (34.55%) REST
2 83 (30.18%) .NET
3 73 (26.55%) RESTful
4 65 (23.64%) AngularJS
5 58 (21.09%) Node.js
6 56 (20.36%) HTML
7 48 (17.45%) SOAP
8 45 (16.36%) CSS
9 37 (13.45%) JSON
10 33 (12.00%) jQuery
11 31 (11.27%) .NET Framework
11 31 (11.27%) Web Services
12 29 (10.55%) ASP.NET Web API
13 27 (9.82%) ASP.NET
13 27 (9.82%) HTML5
14 22 (8.00%) XML
15 21 (7.64%) React
16 20 (7.27%) Spring
17 18 (6.55%) Entity Framework
17 18 (6.55%) WCF
Miscellaneous
1 26 (9.45%) Analytical Skills
2 15 (5.45%) Fintech
3 14 (5.09%) Greenfield Project
4 10 (3.64%) Data Structures
4 10 (3.64%) Mobile App
4 10 (3.64%) Public Cloud
4 10 (3.64%) Self-Motivation
4 10 (3.64%) User Experience
5 8 (2.91%) Virtual Team
6 7 (2.55%) Enterprise Software
7 6 (2.18%) Cloud Native
8 4 (1.45%) W3C
9 3 (1.09%) Reinsurance
10 2 (0.73%) Algorithms
10 2 (0.73%) Blog
11 1 (0.36%) Data Centre
11 1 (0.36%) FMCG
11 1 (0.36%) iPad
11 1 (0.36%) iPhone
11 1 (0.36%) Reference Data
Operating Systems
1 9 (3.27%) Apple iOS
2 8 (2.91%) Linux
3 7 (2.55%) Android
3 7 (2.55%) Windows
4 1 (0.36%) Mac OS X
4 1 (0.36%) Ubuntu
Processes & Methodologies
1 121 (44.00%) Agile Software Development
2 52 (18.91%) Microservices
3 50 (18.18%) TDD
4 49 (17.82%) DevOps
5 41 (14.91%) Scrum
6 37 (13.45%) MVC
7 33 (12.00%) Test Automation
8 29 (10.55%) API Design
8 29 (10.55%) BDD
8 29 (10.55%) Continuous Integration
9 28 (10.18%) Web Development
10 27 (9.82%) Migration
11 22 (8.00%) API Integration
11 22 (8.00%) Front End Development
12 21 (7.64%) Unit Testing
13 20 (7.27%) Computer Science
13 20 (7.27%) Test Scripting
14 19 (6.91%) OO
14 19 (6.91%) Problem-Solving
15 17 (6.18%) Data Modelling
Programming Languages
1 104 (37.82%) JavaScript
2 91 (33.09%) Java
3 60 (21.82%) C#
4 45 (16.36%) SQL
5 41 (14.91%) Python
6 14 (5.09%) TypeScript
7 11 (4.00%) Apex Code
7 11 (4.00%) PHP
7 11 (4.00%) Ruby
7 11 (4.00%) SOQL
7 11 (4.00%) SOSL
8 10 (3.64%) ES6
9 8 (2.91%) Java 8
9 8 (2.91%) Scala
10 7 (2.55%) Kotlin
10 7 (2.55%) PowerShell
11 6 (2.18%) Go
11 6 (2.18%) VB.NET
12 3 (1.09%) C
12 3 (1.09%) Perl
Qualifications
1 22 (8.00%) Degree
2 20 (7.27%) Security Cleared
3 18 (6.55%) SC Cleared
4 6 (2.18%) Computer Science Degree
5 4 (1.45%) Master's Degree
6 2 (0.73%) BPSS Clearance
6 2 (0.73%) DBS Check
7 1 (0.36%) DV Cleared
7 1 (0.36%) PhD
Quality Assurance & Compliance
1 17 (6.18%) QA
2 10 (3.64%) SEPA
3 6 (2.18%) PSD2
4 2 (0.73%) WCAG
5 1 (0.36%) PMO
System Software
1 17 (6.18%) Docker
2 6 (2.18%) Active Directory
3 1 (0.36%) Virtual Machines
Systems Management
1 10 (3.64%) HP Quality Center
2 6 (2.18%) Kubernetes
3 5 (1.82%) Ansible
3 5 (1.82%) Puppet
4 3 (1.09%) Grafana
4 3 (1.09%) Single Sign-On
5 2 (0.73%) Terraform
6 1 (0.36%) Docker Swarm
6 1 (0.36%) HAProxy
6 1 (0.36%) Kibana
6 1 (0.36%) logstash
Vendors
1 24 (8.73%) Microsoft
2 22 (8.00%) MuleSoft
3 20 (7.27%) Google
4 18 (6.55%) Salesforce.com
5 11 (4.00%) Informatica
5 11 (4.00%) TIBCO
6 10 (3.64%) HP
7 9 (3.27%) Oracle
7 9 (3.27%) SAP
8 5 (1.82%) IBM
8 5 (1.82%) Perforce
8 5 (1.82%) Splunk
9 4 (1.45%) Alteryx
10 2 (0.73%) Pega
10 2 (0.73%) Red Hat
10 2 (0.73%) Tableau
10 2 (0.73%) Tufin
11 1 (0.36%) Apple
11 1 (0.36%) Cisco
11 1 (0.36%) Sage