Period
to 15 July 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 15 July 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
15 Jul 2018
Same period 2017 Same period 2016
Rank 444 564 700
Rank change year-on-year +120 +136 +50
Contract jobs citing API Design 446 274 181
As % of all contract IT jobs advertised in England 0.47% 0.31% 0.18%
As % of the Processes & Methodologies category 0.55% 0.37% 0.21%
Number of daily rates quoted 316 198 111
England median daily rate £500 £525 £475
Median daily rate % change year-on-year -4.67% +10.42% +5.56%
10th Percentile £396 £367 £325
90th Percentile £644 £618 £619
UK median daily rate £500 £525 £470
% change year-on-year -4.67% +11.60% +7.43%
Number of hourly rates quoted 0 0 0
England median hourly rate - - -
UK median hourly rate - - -

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 81,299 74,907 85,743
As % of all contract IT jobs advertised in England 85.90% 85.02% 84.35%
Number of daily rates quoted 54,026 49,306 57,151
England median daily rate £463 £450 £425
Median daily rate % change year-on-year +2.78% +5.88% +4.94%
10th Percentile £300 £280 £266
90th Percentile £638 £625 £613
UK median daily rate £450 £445 £425
% change year-on-year +1.12% +4.71% +6.25%
Number of hourly rates quoted 2,237 1,961 2,071
England median hourly rate £22.00 £25.00 £24.00
Median hourly rate % change year-on-year -12.00% +4.17% +13.50%
10th Percentile £11.25 £11.40 £11.72
90th Percentile £50.60 £51.50 £48.75
UK median hourly rate £21.50 £25.00 £25.00
% change year-on-year -14.00% - +16.28%

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 15 July 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 15 July 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 +118 295 £525 +2.19% 66
South East +19 85 £475 -9.52% 12
North of England +7 31 £450 +16.13% 19
North West -10 20 £463 +19.35% 4
Midlands -28 19 £463 -15.91% 13
West Midlands -39 14 £510 -7.27% 5
East of England -37 11 £550 +5.92% 6
Yorkshire - 7 £450 - 6
East Midlands +1 5 £375 -21.05% 8
South West +8 4 £556 - 6
North East 0 4 £400 +3.90% 9
API Design
UK

For the 6 months to 15 July 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.

1 239 (53.59%) Agile Software Development
2 188 (42.15%) RESTful
3 187 (41.93%) Java
4 172 (38.57%) TDD
5 149 (33.41%) JavaScript
6 139 (31.17%) Microservices
7 120 (26.91%) Amazon AWS
7 120 (26.91%) HTML
8 113 (25.34%) CSS
8 113 (25.34%) Test Automation
9 111 (24.89%) Node.js
10 110 (24.66%) Git (software)
11 102 (22.87%) BDD
12 98 (21.97%) Docker
12 98 (21.97%) API Development
13 94 (21.08%) Web Services
14 93 (20.85%) Unit Testing
15 90 (20.18%) Jenkins
16 85 (19.06%) Redux
17 84 (18.83%) React
18 83 (18.61%) OO
19 82 (18.39%) Finance
19 82 (18.39%) ES6
20 80 (17.94%) webpack
21 78 (17.49%) Continuous Delivery
21 78 (17.49%) Chai
22 77 (17.26%) DevOps
23 73 (16.37%) Microsoft Azure
23 73 (16.37%) Scrum
23 73 (16.37%) SDLC

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 24 (5.38%) Elasticsearch
2 10 (2.24%) Oracle SOA Suite
3 9 (2.02%) Apache
4 8 (1.79%) Confluence
5 7 (1.57%) Apache Spark
5 7 (1.57%) JBoss
6 6 (1.35%) Anypoint
6 6 (1.35%) Mule
7 5 (1.12%) Apache Solr
8 3 (0.67%) Mule ESB
9 2 (0.45%) Apache ServiceMix
9 2 (0.45%) Cloud Foundry
9 2 (0.45%) CMS
9 2 (0.45%) Ethereum
9 2 (0.45%) nginx
9 2 (0.45%) WebLogic
9 2 (0.45%) WebSphere
9 2 (0.45%) WebSphere Application Server
9 2 (0.45%) WildFly
10 1 (0.22%) Hyperledger
Applications
1 7 (1.57%) Microsoft Excel
2 6 (1.35%) Microsoft PowerPoint
3 1 (0.22%) InVision
Business Applications
1 11 (2.47%) SAP ERP
1 11 (2.47%) SAP Oil and Gas
2 2 (0.45%) Distributed Ledger
2 2 (0.45%) Magento
2 2 (0.45%) Odoo
3 1 (0.22%) R3 Corda
Cloud Services
1 120 (26.91%) Amazon AWS
2 73 (16.37%) Microsoft Azure
3 48 (10.76%) Serverless
4 37 (8.30%) GitHub
5 31 (6.95%) Heroku
6 19 (4.26%) PaaS
7 18 (4.04%) SaaS
8 16 (3.59%) Amazon EC2
9 15 (3.36%) Google Cloud Platform
10 14 (3.14%) Amazon S3
11 11 (2.47%) AWS Lambda
11 11 (2.47%) IaaS
12 8 (1.79%) Cloud Computing
13 5 (1.12%) Amazon ElastiCache
13 5 (1.12%) BrowserStack
13 5 (1.12%) Trello
14 3 (0.67%) Amazon Kinesis
14 3 (0.67%) iPaaS
14 3 (0.67%) Runscope
14 3 (0.67%) Sauce Labs
Communications & Networking
1 16 (3.59%) HTTP
2 11 (2.47%) TCP/IP
3 9 (2.02%) Internet
4 7 (1.57%) SSL
5 4 (0.90%) DNS
6 3 (0.67%) DSL
6 3 (0.67%) X.509
7 2 (0.45%) Network Security
8 1 (0.22%) Skype
8 1 (0.22%) SMTP
8 1 (0.22%) WebEx
Database & Business Intelligence
1 66 (14.80%) NoSQL
2 38 (8.52%) Relational Database
3 34 (7.62%) MySQL
4 29 (6.50%) PostgreSQL
5 26 (5.83%) MongoDB
6 25 (5.61%) SQL Server
7 19 (4.26%) Redis
8 15 (3.36%) Big Data
9 14 (3.14%) Apache Cassandra
10 13 (2.91%) Amazon DynamoDB
11 11 (2.47%) SAP HANA
12 10 (2.24%) Blockchain
12 10 (2.24%) RDBMS
13 9 (2.02%) Hadoop
14 7 (1.57%) CouchDB
15 6 (1.35%) SQL Server Integration Services
16 5 (1.12%) Data Warehouse
17 4 (0.90%) HBase
18 3 (0.67%) Bigtable
18 3 (0.67%) SQL Server Reporting Services
Development Applications
1 110 (24.66%) Git (software)
2 90 (20.18%) Jenkins
3 80 (17.94%) webpack
4 58 (13.00%) Mocha
5 38 (8.52%) Babel
6 37 (8.30%) Sinon.JS
7 36 (8.07%) Gerrit
8 28 (6.28%) JIRA
9 25 (5.61%) Maven
9 25 (5.61%) PostCSS
10 23 (5.16%) Selenium
11 20 (4.48%) TeamCity
12 17 (3.81%) CircleCI
12 17 (3.81%) JUnit
13 16 (3.59%) Octopus Deploy
14 14 (3.14%) Cucumber
14 14 (3.14%) Gradle
15 12 (2.69%) Mockito
16 9 (2.02%) Bitbucket
16 9 (2.02%) Subversion
General
1 82 (18.39%) Finance
2 39 (8.74%) Banking
3 27 (6.05%) Retail
4 15 (3.36%) Marketing
5 10 (2.24%) Games
5 10 (2.24%) Telecoms
6 9 (2.02%) Electronics
6 9 (2.02%) Investment Banking
6 9 (2.02%) Manufacturing
7 8 (1.79%) Retail Banking
8 5 (1.12%) Financial Institution
8 5 (1.12%) Legal
9 4 (0.90%) Automotive
9 4 (0.90%) Law
10 3 (0.67%) Billing
10 3 (0.67%) Persian Language
11 2 (0.45%) Prime Brokerage
12 1 (0.22%) Advertising
12 1 (0.22%) Publishing
Job Titles
1 300 (67.26%) Developer
2 90 (20.18%) Architect
3 78 (17.49%) Java Developer
4 77 (17.26%) React Developer
5 55 (12.33%) Full Stack Developer
6 52 (11.66%) Node.js Developer
7 42 (9.42%) Solutions Architect
8 41 (9.19%) Senior Developer
9 26 (5.83%) Technical Architect
10 25 (5.61%) JavaScript Developer
10 25 (5.61%) Senior Java Developer
11 21 (4.71%) Digital Developer
12 20 (4.48%) Android Developer
13 17 (3.81%) .NET Developer
13 17 (3.81%) E-Commerce Developer
13 17 (3.81%) Web Developer
14 13 (2.91%) Backend Developer
14 13 (2.91%) Front End Developer (Client-Side Developer)
14 13 (2.91%) Java Engineer
14 13 (2.91%) Scala Developer
Libraries, Frameworks & Software Standards
1 188 (42.15%) RESTful
2 120 (26.91%) HTML
3 113 (25.34%) CSS
4 111 (24.89%) Node.js
5 94 (21.08%) Web Services
6 85 (19.06%) Redux
7 84 (18.83%) React
8 78 (17.49%) Chai
9 72 (16.14%) HTML5
10 66 (14.80%) Spring
11 64 (14.35%) REST
12 62 (13.90%) CSS3
13 61 (13.68%) AngularJS
14 58 (13.00%) JMS
15 48 (10.76%) .NET
16 46 (10.31%) Express
17 42 (9.42%) JSON
18 38 (8.52%) Enzyme
19 32 (7.17%) OAuth
20 26 (5.83%) Spring Boot
Miscellaneous
1 53 (11.88%) User Experience
2 39 (8.74%) Computer Science
3 38 (8.52%) Analytical Skills
4 35 (7.85%) Mobile App
5 32 (7.17%) Algorithms
6 30 (6.73%) Data Structures
7 23 (5.16%) Greenfield Project
8 21 (4.71%) Blackberry
9 19 (4.26%) Enterprise Software
10 17 (3.81%) Management Information System
11 9 (2.02%) Linux Command Line
12 8 (1.79%) Foreign Exchange (FX)
12 8 (1.79%) Virtual Team
13 7 (1.57%) Online Games
14 6 (1.35%) Interest Rate Derivative
14 6 (1.35%) Mobile Banking
15 5 (1.12%) Cloud Native
15 5 (1.12%) Data Centre
15 5 (1.12%) Hybrid Cloud
16 3 (0.67%) Fintech
Operating Systems
1 44 (9.87%) Linux
2 25 (5.61%) Android
3 18 (4.04%) Unix
4 14 (3.14%) Windows
5 7 (1.57%) Apple iOS
6 5 (1.12%) Red Hat Enterprise Linux
7 4 (0.90%) AIX
8 2 (0.45%) CentOS
9 1 (0.22%) VMS
Processes & Methodologies
1 239 (53.59%) Agile Software Development
2 172 (38.57%) TDD
3 139 (31.17%) Microservices
4 113 (25.34%) Test Automation
5 102 (22.87%) BDD
6 98 (21.97%) API Development
7 93 (20.85%) Unit Testing
8 83 (18.61%) OO
9 78 (17.49%) Continuous Delivery
10 77 (17.26%) DevOps
11 73 (16.37%) Scrum
11 73 (16.37%) SDLC
12 69 (15.47%) Continuous Integration
12 69 (15.47%) Problem-Solving
12 69 (15.47%) Web Development
13 58 (13.00%) Configuration Management
14 53 (11.88%) SOA
15 43 (9.64%) Kanban
15 43 (9.64%) Open Source
16 39 (8.74%) MVC
Programming Languages
1 187 (41.93%) Java
2 149 (33.41%) JavaScript
3 82 (18.39%) ES6
4 55 (12.33%) Scala
5 51 (11.43%) SQL
6 42 (9.42%) TypeScript
7 38 (8.52%) Python
8 37 (8.30%) Java 8
9 29 (6.50%) C#
10 24 (5.38%) C++
11 17 (3.81%) Go
11 17 (3.81%) PHP
12 14 (3.14%) Ruby
13 9 (2.02%) Bash Shell
14 6 (1.35%) C
14 6 (1.35%) Shell Script
15 5 (1.12%) Perl
16 4 (0.90%) Clojure
17 3 (0.67%) Groovy
17 3 (0.67%) XPath
Qualifications
1 27 (6.05%) Degree
2 11 (2.47%) TOGAF Certification
3 8 (1.79%) Computer Science Degree
3 8 (1.79%) Security Cleared
4 3 (0.67%) A+ Certification
5 2 (0.45%) SC Cleared
6 1 (0.22%) BPSS Clearance
6 1 (0.22%) CITP
6 1 (0.22%) Master's Degree
Quality Assurance & Compliance
1 16 (3.59%) QA
2 11 (2.47%) COBIT
2 11 (2.47%) Sarbanes-Oxley
3 7 (1.57%) Data Quality
4 6 (1.35%) GCP
5 4 (0.90%) PSD2
6 3 (0.67%) GDPR
System Software
1 98 (21.97%) Docker
2 8 (1.79%) Virtual Servers
3 3 (0.67%) Active Directory
3 3 (0.67%) Virtual Machines
4 2 (0.45%) Apache ZooKeeper
Systems Management
1 34 (7.62%) Kubernetes
2 19 (4.26%) Ansible
3 15 (3.36%) Opscode Chef
4 14 (3.14%) Puppet
4 14 (3.14%) Terraform
5 11 (2.47%) Consul
5 11 (2.47%) Oracle Identity Manager
6 8 (1.79%) Prometheus
7 3 (0.67%) Grafana
7 3 (0.67%) Graphite
7 3 (0.67%) Packer
7 3 (0.67%) Single Sign-On
8 2 (0.45%) Capistrano
8 2 (0.45%) Nagios
8 2 (0.45%) Rancher
8 2 (0.45%) rkt
9 1 (0.22%) Docker Swarm
9 1 (0.22%) HAProxy
9 1 (0.22%) Kibana
9 1 (0.22%) Mesos
Vendors
1 32 (7.17%) Oracle
2 30 (6.73%) Microsoft
3 25 (5.61%) Twitter
4 23 (5.16%) SAP
5 19 (4.26%) MuleSoft
6 15 (3.36%) Google
7 13 (2.91%) Apiary
8 12 (2.69%) TIBCO
9 11 (2.47%) CA
9 11 (2.47%) Ping Identity
10 8 (1.79%) Atlassian
11 6 (1.35%) WSO2
11 6 (1.35%) Zend
12 5 (1.12%) AppDynamics
12 5 (1.12%) Capita
12 5 (1.12%) SOASTA, Inc
13 3 (0.67%) Dynatrace
13 3 (0.67%) Informatica
13 3 (0.67%) Salesforce.com
13 3 (0.67%) Talend