The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Data Quality skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Data Quality over the 3 months to 25 June 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.

Data Quality
London / City of London
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 116 129 142
Rank change year-on-year +13 +13  
Contract jobs citing Data Quality 47 37 61
As % of all contract IT jobs advertised in the City of London 1.44% 1.11% 1.05%
As % of the Quality Assurance & Compliance category 9.63% 9.59% 9.37%
Number of daily rates quoted 37 33 50
Median daily rate £485 £475 £413
Median daily rate % change year-on-year +2.10% +15.15%  
90% offered a daily rate of more than £390 £425 £325
10% offered a daily rate of more than £650 £650 £600
UK excluding London median daily rate £446 £425 £400
% change year-on-year +5.00% +6.25%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £17.75 £16.09 £23.75
% change year-on-year +10.31% -32.25%  

Data Quality is in the quality assurance and compliance skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for quality assurance and compliance skills.

Contract Quality Assurance & Compliance Skills
City of London
Contract job vacancies with a requirement for quality assurance and compliance skills 488 386 651
As % of all contract IT job vacancies advertised in the City of London 14.90% 11.62% 11.18%
Number of daily rates quoted 350 308 498
Median daily rate £500 £475 £475
Median daily rate % change year-on-year +5.26% -  
90% offered a daily rate of more than £328 £325 £300
10% offered a daily rate of more than £650 £625 £650
UK excluding London median daily rate £400 £380 £375
% change year-on-year +5.26% +1.33%  
Number of hourly rates quoted 7 1 7
Median hourly rate £15.00 £85.50 £24.00
Median hourly rate % change year-on-year -82.45% +256.25%  
90% offered a hourly rate of more than £14.02 £85.50 £10.00
10% offered a hourly rate of more than £61.00 £85.50 £63.40
UK excluding London median hourly rate £25.00 £28.00 £24.75
% change year-on-year -10.71% +13.13%  

Data Quality
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Data Quality as a proportion of all contract or permanent IT jobs with a match in the Quality Assurance & Compliance category.

Job vacancy trend for Data Quality in the City of London

Data Quality
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Data Quality in the City of London.

Contractor daily rate trend for Data Quality in the City of London

Data Quality
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Data Quality in the City of London over the 3 months to 25 June 2017.

Contractor daily rate histogram for Data Quality in the City of London

Data Quality
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Data Quality in the City of London.

Contractor hourly rate trend for Data Quality in the City of London

For the 6 months to 25 June 2017, IT contractor jobs citing Data Quality 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 City of London region with a requirement for Data Quality.

1 47 (54.65%) SQL
2 34 (39.53%) Data Management
3 33 (38.37%) Data Modelling
4 28 (32.56%) ETL
5 26 (30.23%) Data Warehouse
6 22 (25.58%) Business Intelligence
7 20 (23.26%) Finance
7 20 (23.26%) Analytics
8 17 (19.77%) Agile Software Development
9 15 (17.44%) Oracle
9 15 (17.44%) Data Analysis
10 14 (16.28%) Data Governance
10 14 (16.28%) Relational Database
10 14 (16.28%) Degree
11 13 (15.12%) Migration
12 12 (13.95%) Stakeholder Management
12 12 (13.95%) SQL Server
12 12 (13.95%) Python
12 12 (13.95%) Hadoop
13 11 (12.79%) Data Migration
14 10 (11.63%) Data Architecture
14 10 (11.63%) Tableau
14 10 (11.63%) R
14 10 (11.63%) Project Management
15 9 (10.47%) Microsoft
15 9 (10.47%) Banking
15 9 (10.47%) Data Transformation
15 9 (10.47%) Analytical Skills
15 9 (10.47%) Data Acquisition
16 8 (9.30%) Data Structures

Data Quality
Co-occurring IT Skills in the City of 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 3 (3.49%) Apache Pig
2 2 (2.33%) Confluence
2 2 (2.33%) Oracle Workflow
2 2 (2.33%) SharePoint
3 1 (1.16%) Apache Spark
3 1 (1.16%) Elasticsearch
3 1 (1.16%) Oracle HTTP Server
Applications
1 5 (5.81%) Microsoft Excel
2 4 (4.65%) MS Visio
3 3 (3.49%) Microsoft Office
3 3 (3.49%) Microsoft PowerPoint
Business Applications
1 2 (2.33%) HFM
1 2 (2.33%) Hyperion Planning
1 2 (2.33%) Oracle EBS
2 1 (1.16%) Cognos TM1
2 1 (1.16%) NetSuite
2 1 (1.16%) Oracle iProcurement
2 1 (1.16%) thinkFolio
Cloud Services
1 3 (3.49%) Amazon AWS
2 2 (2.33%) Adobe Analytics
2 2 (2.33%) Google Analytics
3 1 (1.16%) iPaaS
Communications & Networking
1 1 (1.16%) HTTP
Database & Business Intelligence
1 26 (30.23%) Data Warehouse
2 14 (16.28%) Relational Database
3 12 (13.95%) Hadoop
3 12 (13.95%) SQL Server
4 8 (9.30%) Big Data
5 7 (8.14%) RDBMS
6 6 (6.98%) Apache Hive
6 6 (6.98%) DB2
6 6 (6.98%) NoSQL
7 5 (5.81%) Data Mining
7 5 (5.81%) SQL Server Integration Services
8 4 (4.65%) BusinessObjects
8 4 (4.65%) Crystal Reports
8 4 (4.65%) SQL Server Analysis Services
9 3 (3.49%) Impala
9 3 (3.49%) Oracle Database
9 3 (3.49%) QlikView
9 3 (3.49%) SQL Server 2008
10 2 (2.33%) KDB
10 2 (2.33%) MongoDB
Development Applications
1 6 (6.98%) Talend Open Studio
2 2 (2.33%) ERwin
2 2 (2.33%) JIRA
3 1 (1.16%) XMLSpy
General
1 20 (23.26%) Finance
2 9 (10.47%) Banking
3 6 (6.98%) Front Office
4 5 (5.81%) Retail
5 3 (3.49%) Marketing
6 2 (2.33%) French Language
6 2 (2.33%) Investment Banking
6 2 (2.33%) Publishing
7 1 (1.16%) Legal
Job Titles
1 39 (45.35%) Analyst
2 28 (32.56%) Data Analyst
3 16 (18.60%) Architect
4 15 (17.44%) Developer
5 14 (16.28%) Data Architect
6 7 (8.14%) Business Analyst
7 6 (6.98%) Data Engineer
7 6 (6.98%) Data Quality Analyst
7 6 (6.98%) Senior Analyst
7 6 (6.98%) SQL Analyst
8 5 (5.81%) Consultant
8 5 (5.81%) ETL Analyst
8 5 (5.81%) SQL Data Analyst
9 4 (4.65%) Business Data Analyst
9 4 (4.65%) ETL Developer
9 4 (4.65%) Quality Analyst
10 3 (3.49%) Data Manager
10 3 (3.49%) Senior Business Analyst
10 3 (3.49%) Senior Data Analyst
10 3 (3.49%) Senior Manager
Libraries, Frameworks & Software Standards
1 4 (4.65%) FIX Protocol
2 2 (2.33%) D3.js
2 2 (2.33%) FpML
2 2 (2.33%) HTML
3 1 (1.16%) Matplotlib
3 1 (1.16%) MDX
3 1 (1.16%) Middleware
3 1 (1.16%) Pandas
3 1 (1.16%) PySpark
3 1 (1.16%) REST
3 1 (1.16%) SparkR
3 1 (1.16%) Web Services
3 1 (1.16%) XML
Miscellaneous
1 9 (10.47%) Analytical Skills
2 8 (9.30%) Data Structures
2 8 (9.30%) Management Information System
3 3 (3.49%) Computer Science
4 2 (2.33%) Algorithms
4 2 (2.33%) Derivative
4 2 (2.33%) Foreign Exchange (FX)
4 2 (2.33%) Market Risk
4 2 (2.33%) Mobile App
4 2 (2.33%) Reference Data
5 1 (1.16%) Enterprise Software
5 1 (1.16%) Equities
5 1 (1.16%) Fixed Income
5 1 (1.16%) Virtual Team
Operating Systems
1 2 (2.33%) Linux
1 2 (2.33%) Windows
2 1 (1.16%) Oracle Linux
2 1 (1.16%) Red Hat Enterprise Linux
2 1 (1.16%) Unix
Processes & Methodologies
1 34 (39.53%) Data Management
2 33 (38.37%) Data Modelling
3 28 (32.56%) ETL
4 22 (25.58%) Business Intelligence
5 20 (23.26%) Analytics
6 17 (19.77%) Agile Software Development
7 15 (17.44%) Data Analysis
8 14 (16.28%) Data Governance
9 13 (15.12%) Migration
10 12 (13.95%) Stakeholder Management
11 11 (12.79%) Data Migration
12 10 (11.63%) Data Architecture
12 10 (11.63%) Project Management
13 9 (10.47%) Data Acquisition
13 9 (10.47%) Data Transformation
14 8 (9.30%) Data Integration
14 8 (9.30%) Quality Management
15 7 (8.14%) Data Analytics
15 7 (8.14%) Dimensional Modelling
16 6 (6.98%) Master Data Management
Programming Languages
1 47 (54.65%) SQL
2 12 (13.95%) Python
3 10 (11.63%) R
4 7 (8.14%) PL/SQL
5 6 (6.98%) C++
6 4 (4.65%) Java
7 2 (2.33%) JavaScript
7 2 (2.33%) T-SQL
7 2 (2.33%) VBA
8 1 (1.16%) Scala
Qualifications
1 14 (16.28%) Degree
2 2 (2.33%) Computer Science Degree
2 2 (2.33%) Master's Degree
2 2 (2.33%) Security Cleared
3 1 (1.16%) ACCA
3 1 (1.16%) BPSS Clearance
3 1 (1.16%) CIMA
3 1 (1.16%) SC Cleared
Quality Assurance & Compliance
1 7 (8.14%) MiFID
2 4 (4.65%) Solvency II
3 3 (3.49%) QA
4 2 (2.33%) GDPR
4 2 (2.33%) PMO
5 1 (1.16%) Disclosure Scotland
5 1 (1.16%) ISO 20022
Systems Management
1 1 (1.16%) Control-M
1 1 (1.16%) Oracle EDQ
1 1 (1.16%) Puppet
Vendors
1 15 (17.44%) Oracle
2 10 (11.63%) Tableau
3 9 (10.47%) Microsoft
4 7 (8.14%) Sybase
5 6 (6.98%) Informatica
5 6 (6.98%) Netezza
5 6 (6.98%) Talend
5 6 (6.98%) Teradata
6 4 (4.65%) Alteryx
6 4 (4.65%) Fidessa
7 3 (3.49%) IBM
7 3 (3.49%) ION Trading
7 3 (3.49%) Yardi
8 2 (2.33%) Adobe
8 2 (2.33%) Google
8 2 (2.33%) Hyperion
9 1 (1.16%) Red Hat
9 1 (1.16%) Sage
9 1 (1.16%) Salesforce.com
9 1 (1.16%) Trillium