Period
to 18 October 2018

The following table provides summary statistics for contract job vacancies advertised in England with a requirement for API Design skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited API Design over the 6 months to 18 October 2018 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 Design
UK > England
6 months to
18 Oct 2018
Same period 2017 Same period 2016
Rank 437 575 654
Rank change year-on-year +138 +79 +61
Contract jobs citing API Design 487 277 232
As % of all contract IT jobs advertised in England 0.52% 0.30% 0.24%
As % of the Processes & Methodologies category 0.60% 0.35% 0.28%
Number of daily rates quoted 336 214 153
England median daily rate £505 £538 £450
Median daily rate % change year-on-year -6.05% +19.44% +2.27%
10th Percentile £375 £363 £315
90th Percentile £638 £650 £588
UK median daily rate £505 £538 £445
% change year-on-year -6.05% +20.79% +1.14%
Number of hourly rates quoted 1 0 0
England median hourly rate £45.00 - -
UK median hourly rate £45.00 - -

API Design 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 England with a requirement for process or methodology skills.

All Process and Methodology Skills
England
Contract vacancies with a requirement for process or methodology skills 81,241 78,493 84,179
As % of all contract IT jobs advertised in England 86.22% 85.90% 85.34%
Number of daily rates quoted 54,247 52,460 56,108
England median daily rate £470 £450 £425
Median daily rate % change year-on-year +4.44% +5.88% +3.03%
10th Percentile £300 £283 £263
90th Percentile £645 £630 £605
UK median daily rate £450 £450 £425
% change year-on-year - +5.88% +3.66%
Number of hourly rates quoted 2,179 1,864 2,221
England median hourly rate £21.00 £24.66 £22.50
Median hourly rate % change year-on-year -14.84% +9.60% +3.85%
10th Percentile £11.25 £11.25 £11.25
90th Percentile £50.00 £50.00 £48.00
UK median hourly rate £21.00 £24.93 £22.50
% change year-on-year -15.75% +10.78% +3.45%

API Design
Job Vacancy Trend in England

Job postings citing API Design as a percentage of all IT jobs advertised in England.

Job vacancy trend for API Design in England

API Design
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for API Design in England

API Design
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing API Design in England over the 6 months to 18 October 2018.

Contractor daily rate histogram for API Design in England

API Design
Contractor Hourly Rate Trend in England

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

Contractor hourly rate trend for API Design in England

API Design
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing API Design within the England region over the 6 months to 18 October 2018. 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 +158 345 £513 -4.65% 59
South East -5 50 £445 -15.24% 16
Midlands -9 44 £530 -3.64% 17
West Midlands -10 34 £590 +7.27% 6
North of England -8 26 £500 +29.03% 14
North West -3 17 £500 +29.03% 4
South West -5 13 £513 -1.44% 7
East Midlands +6 10 £456 +7.35% 11
Yorkshire -13 8 £425 +6.25% 10
East of England -48 8 £400 -26.61% 7
North East - 1 - -
API Design
UK

For the 6 months to 18 October 2018, IT contractor jobs citing API Design 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 England region with a requirement for API Design.

1 280 (57.49%) Agile Software Development
2 205 (42.09%) RESTful
3 183 (37.58%) TDD
4 174 (35.73%) Java
5 171 (35.11%) Microservices
6 146 (29.98%) Amazon AWS
7 143 (29.36%) JavaScript
8 136 (27.93%) Git (software)
9 124 (25.46%) Test Automation
10 113 (23.20%) Node.js
11 111 (22.79%) Scrum
12 106 (21.77%) Docker
13 87 (17.86%) Microsoft Azure
14 84 (17.25%) Continuous Integration
15 81 (16.63%) .NET
16 79 (16.22%) HTML
17 78 (16.02%) REST
18 77 (15.81%) AngularJS
19 76 (15.61%) Jenkins
19 76 (15.61%) SOA
20 75 (15.40%) BDD
20 75 (15.40%) DevOps
21 74 (15.20%) CSS
22 73 (14.99%) Unit Testing
22 73 (14.99%) Problem-Solving
23 72 (14.78%) API Development
24 70 (14.37%) Redux
25 68 (13.96%) webpack
25 68 (13.96%) OO
26 65 (13.35%) Kanban

API Design
Co-occurring IT Skills in England 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 35 (7.19%) Elasticsearch
2 13 (2.67%) Apache Spark
3 12 (2.46%) Mule
4 10 (2.05%) Apache Solr
5 9 (1.85%) Oracle SOA Suite
6 6 (1.23%) JBoss
7 5 (1.03%) Anypoint
7 5 (1.03%) Apache
7 5 (1.03%) Confluence
7 5 (1.03%) Mule ESB
7 5 (1.03%) WebLogic
8 3 (0.62%) Apache Pig
9 2 (0.41%) CMS
9 2 (0.41%) Ethereum
9 2 (0.41%) Oracle Coherence
10 1 (0.21%) Adobe Experience Manager
10 1 (0.21%) Apache Airflow
10 1 (0.21%) Hyperledger
10 1 (0.21%) Tomcat
10 1 (0.21%) Umbraco
Applications
1 6 (1.23%) Microsoft Excel
1 6 (1.23%) Microsoft PowerPoint
2 1 (0.21%) MS Visio
Business Applications
1 6 (1.23%) SAP ERP
1 6 (1.23%) SAP Oil and Gas
2 4 (0.82%) Magento
3 3 (0.62%) SAP Hybris
4 2 (0.41%) Distributed Ledger
4 2 (0.41%) Odoo
4 2 (0.41%) Oracle EBS
4 2 (0.41%) Payment Gateway
5 1 (0.21%) BusinessWorks
5 1 (0.21%) R3 Corda
5 1 (0.21%) TIBCO BusinessEvents
Cloud Services
1 146 (29.98%) Amazon AWS
2 87 (17.86%) Microsoft Azure
3 37 (7.60%) GitHub
3 37 (7.60%) Serverless
4 29 (5.95%) Heroku
5 25 (5.13%) AWS Lambda
6 23 (4.72%) SaaS
7 20 (4.11%) Amazon EC2
7 20 (4.11%) PaaS
8 15 (3.08%) Amazon S3
9 10 (2.05%) Amazon SQS
9 10 (2.05%) Azure Functions
10 9 (1.85%) Google Cloud Platform
10 9 (1.85%) IaaS
11 8 (1.64%) iPaaS
12 7 (1.44%) Amazon Kinesis
13 6 (1.23%) npm
14 5 (1.03%) Trello
15 4 (0.82%) BrowserStack
15 4 (0.82%) Cloud Computing
Communications & Networking
1 23 (4.72%) HTTP
2 16 (3.29%) TCP/IP
3 15 (3.08%) SSL
4 9 (1.85%) Internet
5 6 (1.23%) Network Security
6 3 (0.62%) Firewall
7 1 (0.21%) DSL
7 1 (0.21%) Ethernet
7 1 (0.21%) Reverse Proxy
7 1 (0.21%) Unified Communications
7 1 (0.21%) VPN
7 1 (0.21%) WebEx
Database & Business Intelligence
1 65 (13.35%) NoSQL
2 47 (9.65%) Relational Database
3 40 (8.21%) PostgreSQL
4 34 (6.98%) MySQL
5 31 (6.37%) MongoDB
6 24 (4.93%) SQL Server
7 20 (4.11%) Big Data
7 20 (4.11%) Redis
8 18 (3.70%) Amazon DynamoDB
9 16 (3.29%) Apache Cassandra
10 15 (3.08%) Hadoop
11 8 (1.64%) RDBMS
12 6 (1.23%) Amazon RDS
12 6 (1.23%) SAP HANA
13 5 (1.03%) Blockchain
14 3 (0.62%) Apache Hive
14 3 (0.62%) Couchbase
14 3 (0.62%) HBase
15 2 (0.41%) Amazon Redshift
15 2 (0.41%) SQL Server Reporting Services
Development Applications
1 136 (27.93%) Git (software)
2 76 (15.61%) Jenkins
3 68 (13.96%) webpack
4 46 (9.45%) Mocha
5 27 (5.54%) TeamCity
6 26 (5.34%) JIRA
7 24 (4.93%) Octopus Deploy
8 23 (4.72%) PostCSS
9 20 (4.11%) Maven
10 17 (3.49%) JUnit
11 16 (3.29%) Selenium
12 15 (3.08%) JMeter
13 12 (2.46%) Babel
13 12 (2.46%) CircleCI
14 11 (2.26%) Cucumber
15 10 (2.05%) Bitbucket
15 10 (2.05%) Gerrit
15 10 (2.05%) LoadRunner
15 10 (2.05%) Mockito
15 10 (2.05%) Sinon.JS
General
1 63 (12.94%) Finance
2 52 (10.68%) Retail
3 20 (4.11%) Banking
4 10 (2.05%) Games
5 8 (1.64%) Marketing
6 6 (1.23%) Telecoms
7 5 (1.03%) Financial Institution
8 4 (0.82%) Electronics
8 4 (0.82%) Manufacturing
9 3 (0.62%) Investment Banking
9 3 (0.62%) Law
9 3 (0.62%) Retail Banking
10 2 (0.41%) Advertising
10 2 (0.41%) Billing
10 2 (0.41%) Front Office
10 2 (0.41%) Prime Brokerage
10 2 (0.41%) Publishing
11 1 (0.21%) Legal
Job Titles
1 309 (63.45%) Developer
2 97 (19.92%) Architect
3 70 (14.37%) Java Developer
4 69 (14.17%) React Developer
5 42 (8.62%) Senior Developer
5 42 (8.62%) Technical Architect
6 34 (6.98%) .NET Developer
7 32 (6.57%) Solutions Architect
8 31 (6.37%) JavaScript Developer
9 30 (6.16%) Node.js Developer
10 27 (5.54%) Senior Java Developer
11 25 (5.13%) Front End Developer (Client-Side Developer)
12 24 (4.93%) Full Stack Developer
13 22 (4.52%) Scala Developer
14 21 (4.31%) Digital Developer
15 19 (3.90%) .NET Architect
16 18 (3.70%) .NET Technical Architect
16 18 (3.70%) Backend Developer
17 16 (3.29%) C# Developer
17 16 (3.29%) E-Commerce Developer
Libraries, Frameworks & Software Standards
1 205 (42.09%) RESTful
2 113 (23.20%) Node.js
3 81 (16.63%) .NET
4 79 (16.22%) HTML
5 78 (16.02%) REST
6 77 (15.81%) AngularJS
7 74 (15.20%) CSS
8 70 (14.37%) Redux
9 64 (13.14%) Chai
10 58 (11.91%) React
11 57 (11.70%) Spring
12 54 (11.09%) Web Services
13 52 (10.68%) Enzyme
14 45 (9.24%) WCF
15 40 (8.21%) SOAP
15 40 (8.21%) Spring Boot
16 39 (8.01%) .NET Framework
16 39 (8.01%) JSON
17 38 (7.80%) ASP.NET
18 37 (7.60%) Swagger
Miscellaneous
1 56 (11.50%) User Experience
2 39 (8.01%) Analytical Skills
3 37 (7.60%) Computer Science
4 32 (6.57%) Algorithms
5 30 (6.16%) Data Structures
6 28 (5.75%) Mobile App
7 24 (4.93%) Enterprise Software
8 19 (3.90%) Greenfield Project
9 14 (2.87%) Data Centre
10 13 (2.67%) Management Information System
11 12 (2.46%) Linux Command Line
12 10 (2.05%) Self-Motivation
13 7 (1.44%) Blackberry
14 6 (1.23%) Fintech
14 6 (1.23%) iPad
14 6 (1.23%) iPhone
14 6 (1.23%) Online Games
15 5 (1.03%) Client/Server
15 5 (1.03%) Cloud Native
15 5 (1.03%) Foreign Exchange (FX)
Operating Systems
1 37 (7.60%) Linux
1 37 (7.60%) Windows
2 28 (5.75%) Unix
3 18 (3.70%) Android
4 17 (3.49%) Apple iOS
5 6 (1.23%) Mac OS X
6 4 (0.82%) Red Hat Enterprise Linux
7 3 (0.62%) AIX
7 3 (0.62%) HPUX
7 3 (0.62%) Solaris
8 1 (0.21%) CentOS
8 1 (0.21%) VMS
Processes & Methodologies
1 280 (57.49%) Agile Software Development
2 183 (37.58%) TDD
3 171 (35.11%) Microservices
4 124 (25.46%) Test Automation
5 111 (22.79%) Scrum
6 84 (17.25%) Continuous Integration
7 76 (15.61%) SOA
8 75 (15.40%) BDD
8 75 (15.40%) DevOps
9 73 (14.99%) Problem-Solving
9 73 (14.99%) Unit Testing
10 72 (14.78%) API Development
11 68 (13.96%) OO
12 65 (13.35%) Kanban
13 61 (12.53%) Software Engineering
14 56 (11.50%) Continuous Delivery
15 54 (11.09%) Mentoring
16 48 (9.86%) Web Development
17 47 (9.65%) MVC
18 46 (9.45%) Domain-Driven Design
Programming Languages
1 174 (35.73%) Java
2 143 (29.36%) JavaScript
3 64 (13.14%) Python
4 62 (12.73%) SQL
5 54 (11.09%) ES6
6 52 (10.68%) Scala
7 49 (10.06%) C#
8 38 (7.80%) Java 8
9 24 (4.93%) Go
10 21 (4.31%) PHP
11 19 (3.90%) TypeScript
12 18 (3.70%) Ruby
13 17 (3.49%) C++
14 10 (2.05%) Objective-C
15 8 (1.64%) Bash Shell
15 8 (1.64%) Groovy
16 7 (1.44%) C
17 6 (1.23%) Apple Swift
17 6 (1.23%) PowerShell
18 4 (0.82%) Kotlin
Qualifications
1 22 (4.52%) Degree
2 10 (2.05%) CITP
3 7 (1.44%) Computer Science Degree
3 7 (1.44%) Security Cleared
4 6 (1.23%) TOGAF Certification
5 3 (0.62%) A+ Certification
5 3 (0.62%) CCNA
5 3 (0.62%) Cisco Certification
5 3 (0.62%) CISSP
5 3 (0.62%) CompTIA Security+
5 3 (0.62%) DV Cleared
5 3 (0.62%) GIAC
5 3 (0.62%) Linux+ Certification
5 3 (0.62%) MCSE
5 3 (0.62%) Microsoft Certification
5 3 (0.62%) Network+ Certification
5 3 (0.62%) SANS
5 3 (0.62%) SC Cleared
5 3 (0.62%) SSCP
6 2 (0.41%) ISEB
Quality Assurance & Compliance
1 20 (4.11%) QA
2 6 (1.23%) COBIT
2 6 (1.23%) Data Quality
2 6 (1.23%) Sarbanes-Oxley
3 3 (0.62%) GDPR
3 3 (0.62%) PSD2
System Software
1 106 (21.77%) Docker
2 4 (0.82%) Virtual Servers
3 3 (0.62%) vSphere
4 2 (0.41%) Virtual Machines
5 1 (0.21%) Active Directory
Systems Management
1 46 (9.45%) Kubernetes
2 24 (4.93%) Ansible
3 18 (3.70%) Puppet
4 16 (3.29%) Opscode Chef
4 16 (3.29%) Terraform
5 15 (3.08%) Prometheus
6 10 (2.05%) Consul
7 6 (1.23%) Oracle Identity Manager
8 3 (0.62%) CloudHub
8 3 (0.62%) Grafana
8 3 (0.62%) Graphite
8 3 (0.62%) Packer
8 3 (0.62%) Salt
9 2 (0.41%) rkt
10 1 (0.21%) Docker Swarm
10 1 (0.21%) HP Fortify
10 1 (0.21%) Kibana
10 1 (0.21%) Rancher
10 1 (0.21%) TIBCO Hawk
Vendors
1 35 (7.19%) Apiary
2 27 (5.54%) Oracle
3 26 (5.34%) Microsoft
4 25 (5.13%) MuleSoft
5 19 (3.90%) Twitter
6 15 (3.08%) SAP
7 13 (2.67%) AppDynamics
7 13 (2.67%) WSO2
8 10 (2.05%) Google
8 10 (2.05%) SOASTA, Inc
9 6 (1.23%) Ping Identity
10 3 (0.62%) Atlassian
10 3 (0.62%) Dynatrace
10 3 (0.62%) HP
10 3 (0.62%) hybris
10 3 (0.62%) Salesforce.com
11 2 (0.41%) Ab Initio
11 2 (0.41%) IBM
11 2 (0.41%) Siebel
11 2 (0.41%) TIBCO