Period
to 14 December 2018

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 14 December 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 Development
England > London
6 months to
14 Dec 2018
Same period 2017 Same period 2016
Rank 333 336 442
Rank change year-on-year +3 +106 +25
Contract jobs citing API Development 329 339 183
As % of all contract IT jobs advertised in London 0.70% 0.71% 0.41%
As % of the Processes & Methodologies category 0.80% 0.81% 0.47%
Number of daily rates quoted 264 273 137
London median daily rate £514 £488 £475
Median daily rate % change year-on-year +5.38% +2.63% -1.04%
10th Percentile £352 £390 £388
90th Percentile £649 £660 £600
England median daily rate £475 £450 £475
% change year-on-year +5.56% -5.26% +5.56%
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate £26.91 - -

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 41,142 41,864 38,969
As % of all contract IT jobs advertised in London 87.87% 88.09% 87.36%
Number of daily rates quoted 29,661 30,436 27,850
London median daily rate £501 £500 £475
Median daily rate % change year-on-year +0.10% +5.26% +5.56%
10th Percentile £325 £313 £306
90th Percentile £675 £675 £648
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% -
Number of hourly rates quoted 463 390 441
London median hourly rate £24.08 £22.50 £22.00
Median hourly rate % change year-on-year +7.02% +2.27% +10.00%
10th Percentile £13.16 £13.30 £12.13
90th Percentile £54.52 £49.02 £50.00
England median hourly rate £22.22 £25.00 £22.92
% change year-on-year -11.14% +9.06% +4.19%

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 14 December 2018.

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 14 December 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
Central London -38 49 £525 +16.67% 24
South London -7 17 £350 -36.36% 2
North London 0 8 £450 -5.26% 1
West London +4 7 £600 +20.00% 13
East London -32 5 £425 -4.49% 8
API Development
England

For the 6 months to 14 December 2018, 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.

1 184 (55.93%) Agile Software Development
2 156 (47.42%) Java
3 126 (38.30%) REST
4 112 (34.04%) JavaScript
5 101 (30.70%) TDD
6 95 (28.88%) Git (software)
7 83 (25.23%) Jenkins
8 77 (23.40%) Amazon AWS
9 73 (22.19%) HTML
10 71 (21.58%) AngularJS
11 69 (20.97%) RESTful
11 69 (20.97%) SQL
12 68 (20.67%) BDD
13 61 (18.54%) Maven
13 61 (18.54%) Microservices
14 60 (18.24%) DevOps
14 60 (18.24%) Finance
15 59 (17.93%) CSS
15 59 (17.93%) Node.js
16 58 (17.63%) HTML5
17 54 (16.41%) Microsoft Azure
17 54 (16.41%) Test Automation
17 54 (16.41%) .NET
18 52 (15.81%) JSON
19 51 (15.50%) Continuous Integration
20 50 (15.20%) Docker
20 50 (15.20%) PostgreSQL
21 49 (14.89%) API Design
22 48 (14.59%) Spring
23 45 (13.68%) Java 8

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 25 (7.60%) Apache Spark
2 21 (6.38%) Apache
2 21 (6.38%) Confluence
3 17 (5.17%) Tomcat
4 13 (3.95%) Elasticsearch
5 10 (3.04%) IIS
6 9 (2.74%) nginx
6 9 (2.74%) SAS
7 7 (2.13%) Documentum
8 6 (1.82%) JBoss
8 6 (1.82%) Liferay
8 6 (1.82%) WebSphere
9 5 (1.52%) Apache ServiceMix
9 5 (1.52%) Mule
10 3 (0.91%) Jetty
11 2 (0.61%) Apache Solr
11 2 (0.61%) Cloud Foundry
11 2 (0.61%) CMS
11 2 (0.61%) Drupal
11 2 (0.61%) Oracle Coherence
Applications
1 9 (2.74%) Photoshop
2 6 (1.82%) Fireworks
3 5 (1.52%) Microsoft Office
4 3 (0.91%) Adobe Illustrator
4 3 (0.91%) Chatbot
4 3 (0.91%) Microsoft Excel
5 1 (0.30%) Microsoft PowerPoint
5 1 (0.30%) Microsoft Project
Business Applications
1 5 (1.52%) SAP Oil and Gas
2 4 (1.22%) Fredhopper
3 2 (0.61%) Oracle Assets
3 2 (0.61%) Oracle ERP
3 2 (0.61%) Oracle General Ledger
3 2 (0.61%) Oracle Payables
3 2 (0.61%) Oracle Receivables
3 2 (0.61%) Oracle Subledger Accounting
4 1 (0.30%) ION MarketView
4 1 (0.30%) Oracle EBS
4 1 (0.30%) Oracle Financials
4 1 (0.30%) SAP ERP
Cloud Services
1 77 (23.40%) Amazon AWS
2 54 (16.41%) Microsoft Azure
3 19 (5.78%) Serverless
4 18 (5.47%) GitHub
5 17 (5.17%) Amazon S3
5 17 (5.17%) Google Cloud Platform
6 14 (4.26%) Apigee
7 12 (3.65%) AWS Lambda
8 10 (3.04%) Amazon EC2
8 10 (3.04%) PaaS
9 9 (2.74%) SaaS
10 8 (2.43%) npm
11 6 (1.82%) Amazon Kinesis
11 6 (1.82%) Cloud Computing
12 4 (1.22%) Amazon SQS
12 4 (1.22%) IaaS
12 4 (1.22%) OpenShift
12 4 (1.22%) Virtual Private Cloud
13 3 (0.91%) Amazon ElastiCache
13 3 (0.91%) Yarn
Communications & Networking
1 20 (6.08%) Kerberos
2 15 (4.56%) HTTP
3 11 (3.34%) SSL
4 7 (2.13%) Internet
4 7 (2.13%) Unified Communications
5 2 (0.61%) FIX Connectivity
5 2 (0.61%) LAN
5 2 (0.61%) WAN
6 1 (0.30%) BIG-IP
6 1 (0.30%) DNS
6 1 (0.30%) Firewall
6 1 (0.30%) MPLS
6 1 (0.30%) Network Security
6 1 (0.30%) SMS
6 1 (0.30%) VPN
Database & Business Intelligence
1 50 (15.20%) PostgreSQL
2 43 (13.07%) NoSQL
3 33 (10.03%) MongoDB
4 26 (7.90%) SQL Server
5 25 (7.60%) Big Data
6 22 (6.69%) Amazon RDS
7 15 (4.56%) HBase
8 14 (4.26%) Redis
9 11 (3.34%) MySQL
10 9 (2.74%) Apache Cassandra
10 9 (2.74%) Hadoop
10 9 (2.74%) JanusGraph
11 8 (2.43%) Amazon DynamoDB
11 8 (2.43%) Cosmos DB
11 8 (2.43%) Relational Database
12 7 (2.13%) Data Lake
13 6 (1.82%) Data Warehouse
13 6 (1.82%) SQL Server Integration Services
14 5 (1.52%) Data Mining
14 5 (1.52%) RDBMS
Development Applications
1 95 (28.88%) Git (software)
2 83 (25.23%) Jenkins
3 61 (18.54%) Maven
4 43 (13.07%) Selenium
5 41 (12.46%) JIRA
6 35 (10.64%) WebDriver
7 32 (9.73%) JUnit
8 19 (5.78%) Mocha
9 17 (5.17%) Artifactory
10 16 (4.86%) webpack
11 14 (4.26%) Mockito
12 13 (3.95%) Bitbucket
12 13 (3.95%) TeamCity
13 10 (3.04%) GitLab
14 9 (2.74%) Gatling
14 9 (2.74%) Sonatype Nexus
15 8 (2.43%) TestNG
15 8 (2.43%) Visual Studio Team System
16 7 (2.13%) Gerrit
16 7 (2.13%) Hudson
General
1 60 (18.24%) Finance
2 22 (6.69%) Banking
3 11 (3.34%) Marketing
3 11 (3.34%) Retail
4 10 (3.04%) Back Office
5 8 (2.43%) Legal
6 7 (2.13%) Financial Institution
7 5 (1.52%) Front Office
8 3 (0.91%) Games
8 3 (0.91%) Telecoms
9 2 (0.61%) Advertising
9 2 (0.61%) Electronics
9 2 (0.61%) General Ledger
9 2 (0.61%) Manufacturing
9 2 (0.61%) Publishing
10 1 (0.30%) Automotive
10 1 (0.30%) Investment Banking
10 1 (0.30%) Law
10 1 (0.30%) Local Government
10 1 (0.30%) Retail Banking
Job Titles
1 226 (68.69%) Developer
2 66 (20.06%) Java Developer
3 36 (10.94%) Senior Developer
4 35 (10.64%) Architect
5 26 (7.90%) Full Stack Developer
6 25 (7.60%) .NET Developer
7 22 (6.69%) C# Developer
8 21 (6.38%) Node.js Developer
9 20 (6.08%) Front End Developer (Client-Side Developer)
9 20 (6.08%) Senior Java Developer
9 20 (6.08%) Tester
10 19 (5.78%) React Developer
11 14 (4.26%) Technical Architect
12 13 (3.95%) Automation Tester
12 13 (3.95%) JavaScript Developer
13 12 (3.65%) C# .NET Developer
14 10 (3.04%) Angular Developer
14 10 (3.04%) Azure Developer
14 10 (3.04%) Lead Developer
15 8 (2.43%) Java Architect
Libraries, Frameworks & Software Standards
1 126 (38.30%) REST
2 73 (22.19%) HTML
3 71 (21.58%) AngularJS
4 69 (20.97%) RESTful
5 59 (17.93%) CSS
5 59 (17.93%) Node.js
6 58 (17.63%) HTML5
7 54 (16.41%) .NET
8 52 (15.81%) JSON
9 48 (14.59%) Spring
10 42 (12.77%) React
11 36 (10.94%) Web Services
12 32 (9.73%) ASP.NET
13 28 (8.51%) CSS3
13 28 (8.51%) Kafka
14 27 (8.21%) .NET Framework
15 26 (7.90%) SOAP
16 25 (7.60%) ASP.NET MVC
17 24 (7.29%) Spring Boot
18 23 (6.99%) .NET Core
Miscellaneous
1 23 (6.99%) Analytical Skills
2 19 (5.78%) Fintech
2 19 (5.78%) Self-Motivation
3 16 (4.86%) User Experience
4 15 (4.56%) Greenfield Project
5 14 (4.26%) Data Structures
6 13 (3.95%) Algorithms
7 12 (3.65%) Mobile App
8 10 (3.04%) PKI
8 10 (3.04%) Public Cloud
9 5 (1.52%) Foreign Exchange (FX)
10 4 (1.22%) Equities
10 4 (1.22%) iPad
10 4 (1.22%) iPhone
10 4 (1.22%) SWIFT
11 2 (0.61%) DataPower
11 2 (0.61%) Derivative
11 2 (0.61%) Enterprise Software
11 2 (0.61%) Market Risk
11 2 (0.61%) Video\Live Streaming
Operating Systems
1 27 (8.21%) Linux
2 10 (3.04%) Ubuntu
2 10 (3.04%) Windows
3 9 (2.74%) Unix
4 8 (2.43%) Apple iOS
5 6 (1.82%) Android
6 3 (0.91%) Mac OS X
Processes & Methodologies
1 184 (55.93%) Agile Software Development
2 101 (30.70%) TDD
3 68 (20.67%) BDD
4 61 (18.54%) Microservices
5 60 (18.24%) DevOps
6 54 (16.41%) Test Automation
7 51 (15.50%) Continuous Integration
8 49 (14.89%) API Design
9 42 (12.77%) Scrum
10 41 (12.46%) MVC
11 39 (11.85%) API Testing
12 38 (11.55%) Continuous Delivery
13 37 (11.25%) Web Development
14 32 (9.73%) Software Engineering
15 31 (9.42%) SOA
16 29 (8.81%) Open Source
17 24 (7.29%) E-Commerce
18 22 (6.69%) Data Science
18 22 (6.69%) Front End Development
18 22 (6.69%) Workflow
Programming Languages
1 156 (47.42%) Java
2 112 (34.04%) JavaScript
3 69 (20.97%) SQL
4 45 (13.68%) Java 8
5 35 (10.64%) C#
6 29 (8.81%) Python
7 28 (8.51%) TypeScript
8 27 (8.21%) ES6
9 13 (3.95%) PHP
10 7 (2.13%) Ruby
10 7 (2.13%) Scala
11 6 (1.82%) R
12 5 (1.52%) MATLAB
12 5 (1.52%) Shell Script
13 4 (1.22%) Groovy
13 4 (1.22%) SPARQL
14 3 (0.91%) Apple Swift
14 3 (0.91%) PHP 7
14 3 (0.91%) XQuery
15 2 (0.61%) PL/SQL
Qualifications
1 41 (12.46%) Security Cleared
2 38 (11.55%) SC Cleared
3 21 (6.38%) Degree
4 7 (2.13%) Computer Science Degree
5 2 (0.61%) BPSS Clearance
5 2 (0.61%) DBS Check
6 1 (0.30%) Numerate Degree
Quality Assurance & Compliance
1 15 (4.56%) QA
2 7 (2.13%) SEPA
3 5 (1.52%) GDPR
4 4 (1.22%) PSD2
4 4 (1.22%) TARGET2
5 3 (0.91%) WCAG
6 1 (0.30%) ISO/IEC 27001
System Software
1 50 (15.20%) Docker
2 5 (1.52%) Apache Flume
3 4 (1.22%) Active Directory
3 4 (1.22%) VMware Infrastructure
4 1 (0.30%) Virtual Machines
Systems Management
1 29 (8.81%) Kubernetes
2 20 (6.08%) Single Sign-On
3 18 (5.47%) Ansible
4 15 (4.56%) Puppet
5 13 (3.95%) Grafana
6 9 (2.74%) Terraform
7 8 (2.43%) CA Single Sign-On
8 7 (2.13%) HP Quality Center
9 6 (1.82%) Kibana
10 2 (0.61%) logstash
10 2 (0.61%) Opscode Chef
11 1 (0.30%) Business Desktop Deployment
11 1 (0.30%) HAProxy
11 1 (0.30%) Prometheus
Vendors
1 29 (8.81%) Google
1 29 (8.81%) Microsoft
2 17 (5.17%) Oracle
3 12 (3.65%) MuleSoft
4 9 (2.74%) Northgate
4 9 (2.74%) Oneserve
5 8 (2.43%) Adobe
5 8 (2.43%) Axway
5 8 (2.43%) SAP
6 7 (2.13%) HP
6 7 (2.13%) IBM
7 6 (1.82%) Tableau
8 5 (1.52%) Alteryx
8 5 (1.52%) Atlassian
8 5 (1.52%) Informatica
8 5 (1.52%) Talend
8 5 (1.52%) WSO2
9 4 (1.22%) Apple
9 4 (1.22%) VMware
10 3 (0.91%) Perforce