Period
to 23 September 2019

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 6 months to 23 September 2019 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
Central London > City of London
6 months to
23 Sep 2019
Same period 2018 Same period 2017
Rank 143 185 164
Rank change year-on-year +42 -21 +13
Contract jobs citing Data Quality 89 70 79
As % of all contract IT jobs advertised in the City of London 1.43% 1.02% 1.17%
As % of the Quality Assurance & Compliance category 16.12% 10.20% 8.21%
Number of daily rates quoted 61 49 65
City of London median daily rate £550 £475 £475
Median daily rate % change year-on-year +15.79% - -
10th Percentile £350 £310 £363
90th Percentile £650 £666 £675
Central London median daily rate £550 £525 £475
% change year-on-year +4.76% +10.53% -
Number of hourly rates quoted 2 1 0
City of London median hourly rate £12.75 £15.55 -
Median hourly rate % change year-on-year -18.01% - -
Central London median hourly rate £12.75 £15.55 -
% change year-on-year -18.01% - -

Data Quality is in the Quality Assurance and Compliance category. The following 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 or compliance skills.

All Quality Assurance and Compliance Skills
City of London
Contract vacancies with a requirement for quality assurance or compliance skills 552 686 962
As % of all contract IT jobs advertised in the City of London 8.89% 9.99% 14.28%
Number of daily rates quoted 405 537 745
City of London median daily rate £500 £475 £500
Median daily rate % change year-on-year +5.26% -5.00% +5.26%
10th Percentile £314 £300 £313
90th Percentile £675 £675 £688
Central London median daily rate £495 £475 £500
% change year-on-year +4.21% -5.00% +5.26%
Number of hourly rates quoted 8 10 12
City of London median hourly rate £16.50 £17.03 £15.00
Median hourly rate % change year-on-year -3.08% +13.50% -71.56%
10th Percentile £11.38 £13.85 £13.09
90th Percentile £24.68 £21.93 £26.63
Central London median hourly rate £16.50 £17.03 £15.00
% change year-on-year -3.08% +13.50% -71.56%

Data Quality
Job Vacancy Trend in the City of London

Job postings citing Data Quality as a percentage of all IT jobs advertised in the City of London.

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 6 months to 23 September 2019.

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

Data Quality
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Data Quality within the City of London region over the 6 months to 23 September 2019. 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 Bridge +10 25 £550 -
Data Quality
Central London

For the 6 months to 23 September 2019, IT contractor jobs citing Data Quality 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 City of London region with a requirement for Data Quality.

1 55 (61.80%) SQL
2 52 (58.43%) Finance
3 45 (50.56%) Data Warehouse
4 44 (49.44%) Data Modelling
5 37 (41.57%) Analytics
6 32 (35.96%) Machine Learning
7 31 (34.83%) Big Data
8 30 (33.71%) Data Science
9 27 (30.34%) Kafka
10 26 (29.21%) Hadoop
11 25 (28.09%) Enterprise Data Warehouse
12 24 (26.97%) SQL Optimisation
12 24 (26.97%) Apache Hive
12 24 (26.97%) Oozie
12 24 (26.97%) Apache Spark
12 24 (26.97%) OLAP Cube
12 24 (26.97%) OLAP
12 24 (26.97%) Star Schema
13 22 (24.72%) Business Intelligence
14 16 (17.98%) SQL Server
14 16 (17.98%) Data Analysis
14 16 (17.98%) Data Governance
15 15 (16.85%) Agile Software Development
16 14 (15.73%) ETL
16 14 (15.73%) Analytical Skills
16 14 (15.73%) Data Architecture
17 13 (14.61%) Data Management
17 13 (14.61%) SQL Server Integration Services
18 12 (13.48%) Stakeholder Management
18 12 (13.48%) Python

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 24 (26.97%) Apache Spark
2 2 (2.25%) Confluence
2 2 (2.25%) SharePoint
3 1 (1.12%) Apache Airflow
3 1 (1.12%) ArcGIS
3 1 (1.12%) ArcSDE
Applications
1 11 (12.36%) Microsoft Excel
2 3 (3.37%) Microsoft Office
2 3 (3.37%) MS Visio
3 2 (2.25%) Microsoft PowerPoint
4 1 (1.12%) Microsoft Project
Business Applications
1 1 (1.12%) SAP MDG
Cloud Services
1 11 (12.36%) Power Platform
2 9 (10.11%) Azure
3 7 (7.87%) Amazon S3
4 5 (5.62%) Amazon EMR
4 5 (5.62%) AWS Lambda
4 5 (5.62%) Serverless
5 4 (4.49%) AWS
6 3 (3.37%) Force.com
7 1 (1.12%) GCP
7 1 (1.12%) GitHub
Communications & Networking
1 1 (1.12%) Wi-Fi
Database & Business Intelligence
1 45 (50.56%) Data Warehouse
2 31 (34.83%) Big Data
3 26 (29.21%) Hadoop
4 25 (28.09%) Enterprise Data Warehouse
5 24 (26.97%) Apache Hive
5 24 (26.97%) OLAP
5 24 (26.97%) OLAP Cube
5 24 (26.97%) Star Schema
6 16 (17.98%) SQL Server
7 13 (14.61%) SQL Server Integration Services
8 11 (12.36%) Power BI
9 9 (10.11%) SQL Server Reporting Services
10 6 (6.74%) Amazon Redshift
10 6 (6.74%) Data Lake
11 4 (4.49%) Azure SQL Data Warehouse
11 4 (4.49%) Azure SQL Database
11 4 (4.49%) Relational Database
11 4 (4.49%) SQL Server Analysis Services
12 3 (3.37%) Microsoft Analysis Services
12 3 (3.37%) NoSQL
Development Applications
1 3 (3.37%) Git (software)
1 3 (3.37%) JIRA
2 1 (1.12%) Bitbucket Server
2 1 (1.12%) Eclipse
2 1 (1.12%) Protractor
2 1 (1.12%) Selenium
2 1 (1.12%) Visual Studio
General
1 52 (58.43%) Finance
2 8 (8.99%) Advertising
3 4 (4.49%) Banking
4 2 (2.25%) Back Office
4 2 (2.25%) Front Office
4 2 (2.25%) Legal
4 2 (2.25%) Retail
5 1 (1.12%) Investment Banking
5 1 (1.12%) Public Sector
Job Titles
1 27 (30.34%) Data Engineer
2 24 (26.97%) Hadoop Engineer
3 21 (23.60%) Analyst
4 14 (15.73%) Developer
5 13 (14.61%) Data Analyst
6 8 (8.99%) Architect
6 8 (8.99%) Data Architect
6 8 (8.99%) SQL Analyst
7 7 (7.87%) SQL Developer
8 6 (6.74%) Business Intelligence Developer
9 5 (5.62%) Business Analyst
9 5 (5.62%) Senior Architect
9 5 (5.62%) Senior Data Architect
10 4 (4.49%) SQL Data Analyst
11 3 (3.37%) Business Intelligence Analyst
11 3 (3.37%) Consultant
11 3 (3.37%) Excel Analyst
11 3 (3.37%) Power BI Analyst
11 3 (3.37%) Power BI Developer
11 3 (3.37%) SQL BI Developer
Libraries, Frameworks & Software Standards
1 27 (30.34%) Kafka
2 3 (3.37%) Web Services
3 1 (1.12%) HTML
3 1 (1.12%) MDX
3 1 (1.12%) NumPy
3 1 (1.12%) Pandas
3 1 (1.12%) Pyramid
3 1 (1.12%) SciPy
3 1 (1.12%) Spring
Miscellaneous
1 14 (15.73%) Analytical Skills
2 5 (5.62%) Data Structures
2 5 (5.62%) Reference Data
3 3 (3.37%) Algorithms
3 3 (3.37%) Self-Motivation
4 2 (2.25%) Derivative
4 2 (2.25%) Equities
4 2 (2.25%) Fixed Income
4 2 (2.25%) Foreign Exchange (FX)
4 2 (2.25%) Tandem
5 1 (1.12%) Data Protection Act
5 1 (1.12%) Freedom of Information
5 1 (1.12%) Freedom of Information Act
5 1 (1.12%) Hedge funds
5 1 (1.12%) Linked Data
5 1 (1.12%) Management Information System
5 1 (1.12%) NHS
5 1 (1.12%) Reinsurance
5 1 (1.12%) Replication
Operating Systems
1 2 (2.25%) Linux
1 2 (2.25%) Unix
2 1 (1.12%) Windows
Processes & Methodologies
1 44 (49.44%) Data Modelling
2 37 (41.57%) Analytics
3 32 (35.96%) Machine Learning
4 30 (33.71%) Data Science
5 24 (26.97%) SQL Optimisation
6 22 (24.72%) Business Intelligence
7 16 (17.98%) Data Analysis
7 16 (17.98%) Data Governance
8 15 (16.85%) Agile Software Development
9 14 (15.73%) Data Architecture
9 14 (15.73%) ETL
10 13 (14.61%) Data Management
11 12 (13.48%) Stakeholder Management
12 11 (12.36%) Problem-Solving
13 9 (10.11%) Migration
14 7 (7.87%) Artificial Intelligence
14 7 (7.87%) Data Integration
14 7 (7.87%) Data Strategy
14 7 (7.87%) Master Data Management
14 7 (7.87%) Re-Platforming
Programming Languages
1 55 (61.80%) SQL
2 12 (13.48%) Python
3 6 (6.74%) T-SQL
4 5 (5.62%) Perl
5 4 (4.49%) Java
6 2 (2.25%) C++
6 2 (2.25%) R
6 2 (2.25%) Scala
7 1 (1.12%) Bash Shell
7 1 (1.12%) C#
7 1 (1.12%) Cypher
7 1 (1.12%) Data Analysis Expressions (DAX)
7 1 (1.12%) JavaScript
7 1 (1.12%) MATLAB
7 1 (1.12%) PL/SQL
7 1 (1.12%) Shell Script
Qualifications
1 6 (6.74%) Degree
2 3 (3.37%) Computer Science Degree
3 1 (1.12%) ISEB
3 1 (1.12%) SC Cleared
3 1 (1.12%) Security Cleared
Quality Assurance & Compliance
1 2 (2.25%) GDPR
1 2 (2.25%) QA
2 1 (1.12%) EMIR
2 1 (1.12%) ISO/IEC 27001
2 1 (1.12%) MiFID
2 1 (1.12%) Solvency II
System Software
1 1 (1.12%) Active Directory
1 1 (1.12%) Docker
Systems Management
1 24 (26.97%) Oozie
Vendors
1 9 (10.11%) Microsoft
2 6 (6.74%) Oracle
2 6 (6.74%) Salesforce.com
3 5 (5.62%) Tableau
4 3 (3.37%) Alteryx
4 3 (3.37%) Dell
4 3 (3.37%) MuleSoft
4 3 (3.37%) SAP
5 2 (2.25%) Ariba
5 2 (2.25%) Informatica
5 2 (2.25%) Sybase
6 1 (1.12%) Cognos
6 1 (1.12%) Google
6 1 (1.12%) Teradata
6 1 (1.12%) Zoho