The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Protocol Buffers skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Protocol Buffers over the 3 months to 27 April 2017 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.

Google Protocol Buffers (protobuf)
England / London
3 months to
27 Apr 2017
Same period 2016 Same period 2015
Rank 395 437 432
Rank change year-on-year +42 -5  
Contract jobs citing Protocol Buffers 16 5 1
As % of all contract IT jobs advertised in London 0.079% 0.022% 0.004%
As % of the Libraries, Frameworks & Software Standards category 0.23% 0.068% 0.015%
Number of daily rates quoted 13 5 0
Median daily rate £540 £500 -
Median daily rate % change year-on-year +8.00% -  
UK excluding London median daily rate £525 £425 £275
% change year-on-year +23.52% +54.54%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Protocol Buffers is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 7064 7320 6808
As % of all contract IT job vacancies advertised in London 34.86% 31.77% 30.51%
Number of daily rates quoted 5289 5518 4843
Median daily rate £475 £450 £425
Median daily rate % change year-on-year +5.55% +5.88%  
90% offered a daily rate of more than £350 £325 £310
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £375 £375 £350
% change year-on-year - +7.14%  
Number of hourly rates quoted 52 25 33
Median hourly rate £43.50 £26.25 £22.18
Median hourly rate % change year-on-year +65.71% +18.34%  
90% offered a hourly rate of more than £17.01 £17.35 £19.00
10% offered a hourly rate of more than £55.00 £54.00 £55.00
UK excluding London median hourly rate £42.50 £35.00 £36.50
% change year-on-year +21.42% -4.10%  

Protocol Buffers
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Protocol Buffers as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for Protocol Buffers in London

Protocol Buffers
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Protocol Buffers in London

Protocol Buffers
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Protocol Buffers in London over the 3 months to 27 April 2017.

Contractor daily rate histogram for Protocol Buffers in London

Protocol Buffers
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for Protocol Buffers in London

Protocol Buffers
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 Protocol Buffers within the London region over the 3 months to 27 April 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Canary Wharf - 3 £575 -
City of London - 2 - - 1
Protocol Buffers
England

For the 6 months to 27 April 2017, IT contractor jobs citing Protocol Buffers also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for Protocol Buffers.

1 29 (87.88%) Java
2 24 (72.73%) Agile Software Development
2 24 (72.73%) Banking
3 22 (66.67%) Finance
4 20 (60.61%) SQL
5 17 (51.52%) OO
5 17 (51.52%) Maven
5 17 (51.52%) JSON
5 17 (51.52%) Relational Database
6 16 (48.48%) Gradle
6 16 (48.48%) Unix
6 16 (48.48%) Scrum
7 15 (45.45%) XML
7 15 (45.45%) SOAP
7 15 (45.45%) Spring
7 15 (45.45%) Git (software)
8 14 (42.42%) MiFID
8 14 (42.42%) Jenkins
9 13 (39.39%) OOA/OOD
10 12 (36.36%) Shell Script
10 12 (36.36%) Perforce
10 12 (36.36%) DB2
10 12 (36.36%) Ant
10 12 (36.36%) Enterprise Architecture
10 12 (36.36%) Hudson
10 12 (36.36%) EMIR
11 11 (33.33%) Dodd-Frank
11 11 (33.33%) Investment Banking
11 11 (33.33%) Refactoring
11 11 (33.33%) Stakeholder Management

Protocol Buffers
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 4 (12.12%) Oracle Coherence
2 2 (6.06%) Apache Spark
2 2 (6.06%) Elasticsearch
3 1 (3.03%) Apache
3 1 (3.03%) Apache Airflow
3 1 (3.03%) DataSynapse
3 1 (3.03%) MTS
Applications
1 1 (3.03%) Microsoft Excel
1 1 (3.03%) Spreadsheet
Business Applications
1 1 (3.03%) BondVision
Cloud Services
1 5 (15.15%) Microsoft Azure
2 2 (6.06%) Amazon AWS
Communications & Networking
1 1 (3.03%) HTTP
1 1 (3.03%) MQTT
1 1 (3.03%) RTP
1 1 (3.03%) RTSP
1 1 (3.03%) STUN
1 1 (3.03%) TCP/IP
Database & Business Intelligence
1 17 (51.52%) Relational Database
2 12 (36.36%) DB2
3 4 (12.12%) InterSystems Cache
3 4 (12.12%) Oracle Database
3 4 (12.12%) Oracle Database 11g
4 3 (9.09%) Hadoop
4 3 (9.09%) HBase
5 2 (6.06%) Big Data
5 2 (6.06%) Blockchain
5 2 (6.06%) MongoDB
5 2 (6.06%) NoSQL
6 1 (3.03%) Apache Cassandra
6 1 (3.03%) Cloudera CDH
6 1 (3.03%) Data Lake
6 1 (3.03%) KDB
6 1 (3.03%) RDBMS
Development Applications
1 17 (51.52%) Maven
2 16 (48.48%) Gradle
3 15 (45.45%) Git (software)
4 14 (42.42%) Jenkins
5 12 (36.36%) Ant
5 12 (36.36%) Hudson
6 5 (15.15%) JUnit
6 5 (15.15%) TeamCity
7 3 (9.09%) JBehave
7 3 (9.09%) Mockito
8 2 (6.06%) Spock
8 2 (6.06%) Subversion
9 1 (3.03%) Apache Ivy
General
1 24 (72.73%) Banking
2 22 (66.67%) Finance
3 11 (33.33%) Investment Banking
4 4 (12.12%) Legal
5 3 (9.09%) Front Office
Job Titles
1 27 (81.82%) Developer
2 25 (75.76%) Java Developer
3 6 (18.18%) Core Java Developer
3 6 (18.18%) Investment Banking Java Developer
3 6 (18.18%) Senior Developer
3 6 (18.18%) Senior Java Developer
4 3 (9.09%) Java Pricing Developer
5 2 (6.06%) Consultant
5 2 (6.06%) Grid Consultant
5 2 (6.06%) Java Engineer
5 2 (6.06%) NoSQL Developer
5 2 (6.06%) Report Developer
5 2 (6.06%) SQL Developer
5 2 (6.06%) Unix Developer
6 1 (3.03%) Analyst Developer
6 1 (3.03%) Front End Developer (Client-Side Developer)
6 1 (3.03%) Java Analyst Developer
6 1 (3.03%) Java Software Engineer
6 1 (3.03%) JavaScript Developer
6 1 (3.03%) Lead Java Developer
Libraries, Frameworks & Software Standards
1 17 (51.52%) JSON
2 15 (45.45%) SOAP
2 15 (45.45%) Spring
2 15 (45.45%) XML
3 7 (21.21%) Apache Avro
4 5 (15.15%) JMS
4 5 (15.15%) Kafka
5 4 (12.12%) Node.js
6 3 (9.09%) AngularJS
6 3 (9.09%) gRPC
6 3 (9.09%) HTML
6 3 (9.09%) HTML5
6 3 (9.09%) RESTful
6 3 (9.09%) Web Services
7 2 (6.06%) .NET
7 2 (6.06%) J2EE
7 2 (6.06%) RabbitMQ
7 2 (6.06%) REST
7 2 (6.06%) RxJava
8 1 (3.03%) Samza
Miscellaneous
1 7 (21.21%) Derivative
2 5 (15.15%) OTC Derivatives
3 4 (12.12%) Computer Science
3 4 (12.12%) Greenfield Project
4 3 (9.09%) Algorithms
4 3 (9.09%) Analytical Skills
4 3 (9.09%) Grid Computing
4 3 (9.09%) Public Cloud
4 3 (9.09%) Reference Data
5 2 (6.06%) Data Structures
5 2 (6.06%) Equities
5 2 (6.06%) N-Tier
6 1 (3.03%) Fixed Income
6 1 (3.03%) Foreign Exchange (FX)
6 1 (3.03%) MPEG
6 1 (3.03%) Streaming Video
6 1 (3.03%) Video on Demand
Operating Systems
1 16 (48.48%) Unix
2 6 (18.18%) Linux
3 4 (12.12%) Windows
4 3 (9.09%) Windows Server
5 2 (6.06%) Windows Server 2012
6 1 (3.03%) Android
6 1 (3.03%) Apple iOS
Processes & Methodologies
1 24 (72.73%) Agile Software Development
2 17 (51.52%) OO
3 16 (48.48%) Scrum
4 13 (39.39%) OOA/OOD
5 12 (36.36%) Enterprise Architecture
6 11 (33.33%) Refactoring
6 11 (33.33%) Stakeholder Management
7 10 (30.30%) Domain-Driven Design
7 10 (30.30%) Microservices
8 6 (18.18%) Multithreading
8 6 (18.18%) TDD
9 4 (12.12%) Anti-Money Laundering
9 4 (12.12%) Continuous Delivery
9 4 (12.12%) High Availability
9 4 (12.12%) Multithreaded Programming
9 4 (12.12%) OOD
9 4 (12.12%) SDLC
10 3 (9.09%) Change Management
10 3 (9.09%) DevOps
10 3 (9.09%) Electronic Trading
Programming Languages
1 29 (87.88%) Java
2 20 (60.61%) SQL
3 12 (36.36%) Shell Script
4 4 (12.12%) C#
4 4 (12.12%) Groovy
4 4 (12.12%) Python
5 3 (9.09%) Go
5 3 (9.09%) JavaScript
6 2 (6.06%) C++
7 1 (3.03%) C
7 1 (3.03%) Objective-C
7 1 (3.03%) Scala
Qualifications
1 6 (18.18%) Degree
2 1 (3.03%) CFA
Quality Assurance & Compliance
1 14 (42.42%) MiFID
2 12 (36.36%) EMIR
3 11 (33.33%) Dodd-Frank
System Software
1 3 (9.09%) Docker
Systems Management
1 4 (12.12%) MOM
Vendors
1 12 (36.36%) Perforce
2 8 (24.24%) Google
3 5 (15.15%) Solace
4 4 (12.12%) Oracle
4 4 (12.12%) Sybase
5 3 (9.09%) Microsoft
6 1 (3.03%) Bloomberg
6 1 (3.03%) Brightcove
6 1 (3.03%) eSpeed
6 1 (3.03%) MarketAxess
6 1 (3.03%) TIBCO
6 1 (3.03%) Tradeweb