Period
to 2 March 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Unix skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Unix over the 6 months to 2 March 2021 with a comparison to the same period in the previous 2 years.

Unix
Central London > City of London
6 months to
2 Mar 2021
Same period 2020 Same period 2019
Rank 131 100 85
Rank change year-on-year -31 -15 -10
Permanent jobs citing Unix 104 277 353
As % of all permanent jobs advertised in the City of London 2.21% 3.12% 3.39%
As % of the Operating Systems category 13.81% 15.13% 14.91%
Number of salaries quoted 103 227 330
Median annual salary £70,000 £75,000 £70,000
Median salary % change year-on-year -6.67% +7.14% -
10th Percentile £48,750 £50,750 £45,000
90th Percentile £93,500 £120,000 £96,250
Central London median annual salary £70,000 £75,000 £70,000
% change year-on-year -6.67% +7.14% -

Unix is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for operating system skills.

All Operating Systems
City of London
Permanent vacancies with a requirement for operating system skills 753 1,831 2,368
As % of all permanent IT jobs advertised in the City of London 16.01% 20.60% 22.71%
Number of salaries quoted 661 1,567 2,097
Median annual salary £65,000 £61,000 £60,000
Median salary % change year-on-year +6.56% +1.67% -
10th Percentile £37,538 £28,250 £30,000
90th Percentile £95,000 £97,500 £92,500
Central London median annual salary £62,500 £60,000 £58,250
% change year-on-year +4.17% +3.00% +5.91%

Unix
Job Vacancy Trend in the City of London

Job postings citing Unix as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for Unix in the City of London

Unix
Salary Trend in the City of London

3-month moving average salary quoted in jobs citing Unix in the City of London.

Salary trend for Unix in the City of London

Unix
Salary Histogram in the City of London

Salary distribution for jobs citing Unix in the City of London over the 6 months to 2 March 2021.

Salary histogram for Unix in the City of London

Unix
Job Locations in the City of London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Unix within the City of London region over the 6 months to 2 March 2021. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge +16 1 £60,000 +33.33%
Unix
Central London

For the 6 months to 2 March 2021, IT jobs citing Unix also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the City of London region with a requirement for Unix.

1 67 (64.42%) Linux
2 51 (49.04%) Python
3 44 (42.31%) Finance
3 44 (42.31%) AWS
4 40 (38.46%) SQL
5 39 (37.50%) Java
6 34 (32.69%) DevOps
7 31 (29.81%) Agile Software Development
8 27 (25.96%) Azure
9 26 (25.00%) Oracle
10 23 (22.12%) Windows
11 20 (19.23%) Bash Shell
11 20 (19.23%) Ansible
12 19 (18.27%) Banking
12 19 (18.27%) ETL
13 17 (16.35%) Shell Script
13 17 (16.35%) QA
13 17 (16.35%) SDLC
14 16 (15.38%) Puppet
14 16 (15.38%) JavaScript
15 15 (14.42%) Informatica
16 14 (13.46%) Analytics
16 14 (13.46%) Docker
17 13 (12.50%) Opscode Chef
17 13 (12.50%) Fintech
17 13 (12.50%) Red Hat Enterprise Linux
18 12 (11.54%) Test Automation
18 12 (11.54%) Hadoop
18 12 (11.54%) Software Engineering
18 12 (11.54%) Advertising

Unix
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 10 (9.62%) SAS
2 6 (5.77%) Apache
3 4 (3.85%) Apache Spark
4 2 (1.92%) Confluence
5 1 (0.96%) Ethereum
5 1 (0.96%) MS Exchange
Applications
1 1 (0.96%) Spreadsheet
Cloud Services
1 44 (42.31%) AWS
2 27 (25.96%) Azure
3 10 (9.62%) Power Platform
4 7 (6.73%) IaaS
5 6 (5.77%) GCP
6 4 (3.85%) PaaS
7 2 (1.92%) OpenShift
8 1 (0.96%) Azure Data Factory
8 1 (0.96%) Heroku
8 1 (0.96%) Microsoft 365
8 1 (0.96%) Salesforce Sales Cloud
Communications & Networking
1 10 (9.62%) TCP/IP
2 8 (7.69%) Firewall
3 5 (4.81%) Multicast
3 5 (4.81%) tcpdump
3 5 (4.81%) WAN
4 4 (3.85%) Intrusion Detection
4 4 (3.85%) LAN
4 4 (3.85%) Network Security
5 3 (2.88%) DNS
5 3 (2.88%) VPN
6 2 (1.92%) BGP
6 2 (1.92%) MPLS
6 2 (1.92%) SSL
6 2 (1.92%) Wireshark
7 1 (0.96%) Internet
7 1 (0.96%) OSPF
7 1 (0.96%) RSVP
7 1 (0.96%) SSH
7 1 (0.96%) VPLS
7 1 (0.96%) Wi-Fi
Database & Business Intelligence
1 12 (11.54%) Hadoop
1 12 (11.54%) Oracle Database
2 10 (9.62%) Apache Hive
2 10 (9.62%) BusinessObjects
2 10 (9.62%) Impala
2 10 (9.62%) Pentaho
2 10 (9.62%) Power BI
2 10 (9.62%) SQL Server
3 6 (5.77%) Relational Database
4 5 (4.81%) Big Data
4 5 (4.81%) DataStage
4 5 (4.81%) SQL Server Integration Services
5 4 (3.85%) MySQL
5 4 (3.85%) PostgreSQL
5 4 (3.85%) Snowflake Schema
6 2 (1.92%) Amazon Redshift
6 2 (1.92%) Blockchain
6 2 (1.92%) Data Lake
6 2 (1.92%) Data Warehouse
6 2 (1.92%) KDB
Development Applications
1 10 (9.62%) Git (software)
2 9 (8.65%) GitLab
2 9 (8.65%) Jenkins
3 8 (7.69%) Cucumber
3 8 (7.69%) REST Assured
3 8 (7.69%) Selenium
3 8 (7.69%) SoapUI
4 5 (4.81%) JIRA
4 5 (4.81%) TeamCity
5 4 (3.85%) Bitbucket
6 1 (0.96%) Atlassian Bamboo
6 1 (0.96%) Hudson
6 1 (0.96%) Subversion
General
1 44 (42.31%) Finance
2 19 (18.27%) Banking
3 12 (11.54%) Advertising
4 8 (7.69%) Investment Banking
5 5 (4.81%) Back Office
5 5 (4.81%) Front Office
6 1 (0.96%) Financial Institution
6 1 (0.96%) Public Sector
6 1 (0.96%) Retail Banking
Job Titles
1 24 (23.08%) Developer
2 19 (18.27%) DevOps Engineer
3 14 (13.46%) Java Developer
4 12 (11.54%) Data Engineer
5 9 (8.65%) Senior Developer
6 8 (7.69%) QA Engineer
6 8 (7.69%) Senior DevOps
6 8 (7.69%) Senior DevOps Engineer
7 7 (6.73%) Automation Engineer
7 7 (6.73%) AWS DevOps
7 7 (6.73%) Linux/Unix DevOps
7 7 (6.73%) Python Developer
7 7 (6.73%) Python Engineer
7 7 (6.73%) Senior Java Developer
8 6 (5.77%) Analyst
8 6 (5.77%) Linux Engineer
8 6 (5.77%) QA Automation Engineer
8 6 (5.77%) Site Engineer
8 6 (5.77%) Site Reliability Engineer
9 5 (4.81%) AWS DevOps Engineer
Libraries, Frameworks & Software Standards
1 8 (7.69%) Gherkin
2 7 (6.73%) FIX Protocol
2 7 (6.73%) Middleware
2 7 (6.73%) Spring
3 6 (5.77%) Elastic Stack
3 6 (5.77%) XML
4 4 (3.85%) AngularJS
4 4 (3.85%) JMS
4 4 (3.85%) PySpark
4 4 (3.85%) Ultra Messaging
5 3 (2.88%) Dask
5 3 (2.88%) Django
5 3 (2.88%) JSON
6 2 (1.92%) CSS
6 2 (1.92%) React
6 2 (1.92%) RESTful
6 2 (1.92%) SOAP
6 2 (1.92%) Spring Boot
6 2 (1.92%) XSLT
6 2 (1.92%) YAML
Miscellaneous
1 9 (8.65%) Derivative
2 7 (6.73%) Analytical Skills
3 6 (5.77%) Data Structures
3 6 (5.77%) Fixed Income
4 5 (4.81%) Algorithms
5 4 (3.85%) Equities
5 4 (3.85%) Management Information System
5 4 (3.85%) Reference Data
6 3 (2.88%) Foreign Exchange (FX)
6 3 (2.88%) OTC Derivatives
6 3 (2.88%) SWIFT
7 2 (1.92%) Cyber Kill Chain
7 2 (1.92%) Distributed Denial-of-Service
7 2 (1.92%) Exotic Derivative
7 2 (1.92%) Hedge funds
7 2 (1.92%) Robotics
8 1 (0.96%) Clustering
8 1 (0.96%) Digital Media
8 1 (0.96%) Enterprise Software
8 1 (0.96%) Greenfield Project
Operating Systems
1 67 (64.42%) Linux
2 23 (22.12%) Windows
3 13 (12.50%) Red Hat Enterprise Linux
4 9 (8.65%) CentOS
5 4 (3.85%) Ubuntu
6 2 (1.92%) Solaris
6 2 (1.92%) VMS
6 2 (1.92%) Windows Server
6 2 (1.92%) Windows XP
7 1 (0.96%) Fedora
Processes & Methodologies
1 34 (32.69%) DevOps
2 31 (29.81%) Agile Software Development
3 19 (18.27%) ETL
4 17 (16.35%) SDLC
5 14 (13.46%) Analytics
6 13 (12.50%) Fintech
7 12 (11.54%) Software Engineering
7 12 (11.54%) Test Automation
8 11 (10.58%) Configuration Management
9 10 (9.62%) Data Analytics
9 10 (9.62%) Requirements Gathering
10 8 (7.69%) Computer Science
10 8 (7.69%) Investment Management
10 8 (7.69%) Multithreading
10 8 (7.69%) Problem-Solving
10 8 (7.69%) Site Reliability Engineering
10 8 (7.69%) Unit Testing
11 7 (6.73%) Functional Testing
11 7 (6.73%) Information Security
11 7 (6.73%) TDD
Programming Languages
1 51 (49.04%) Python
2 40 (38.46%) SQL
3 39 (37.50%) Java
4 20 (19.23%) Bash Shell
5 17 (16.35%) Shell Script
6 16 (15.38%) JavaScript
7 10 (9.62%) HiveQL
7 10 (9.62%) PL/SQL
8 8 (7.69%) C++
8 8 (7.69%) PHP
8 8 (7.69%) PowerShell
9 6 (5.77%) Perl
10 4 (3.85%) C#
10 4 (3.85%) Ruby
11 1 (0.96%) Korn
11 1 (0.96%) R
11 1 (0.96%) VB
Qualifications
1 11 (10.58%) Degree
2 6 (5.77%) CISSP
3 4 (3.85%) GSEC
4 3 (2.88%) (ISC)2 CCSP
4 3 (2.88%) CCSP
4 3 (2.88%) Cisco Certification
4 3 (2.88%) CISM
5 2 (1.92%) Computer Science Degree
5 2 (1.92%) CREST Certified
5 2 (1.92%) GCFA
5 2 (1.92%) GCIA
5 2 (1.92%) GCIH
6 1 (0.96%) CISA
6 1 (0.96%) CRISC
6 1 (0.96%) ITIL Foundation Certificate
6 1 (0.96%) JNCIE
Quality Assurance & Compliance
1 17 (16.35%) QA
2 4 (3.85%) Data Quality
3 3 (2.88%) ISO/IEC 27001
4 2 (1.92%) COBIT
4 2 (1.92%) NIST
5 1 (0.96%) GDPR
5 1 (0.96%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
5 1 (0.96%) SLA
System Software
1 14 (13.46%) Docker
2 10 (9.62%) Active Directory
2 10 (9.62%) HDFS
3 5 (4.81%) VMware Infrastructure
4 1 (0.96%) Oracle RAC
4 1 (0.96%) Virtual Machines
4 1 (0.96%) Virtual Servers
Systems Management
1 20 (19.23%) Ansible
2 16 (15.38%) Puppet
3 13 (12.50%) Opscode Chef
4 12 (11.54%) Kubernetes
5 7 (6.73%) Control-M
6 6 (5.77%) Terraform
7 5 (4.81%) Prometheus
8 4 (3.85%) Salt
9 3 (2.88%) ITRS Geneos
10 2 (1.92%) CSIRT
10 2 (1.92%) Nagios
10 2 (1.92%) Packer
10 2 (1.92%) vCenter Server
11 1 (0.96%) CASB
11 1 (0.96%) FortiGate
11 1 (0.96%) HAProxy
11 1 (0.96%) Oracle RMAN
Vendors
1 26 (25.00%) Oracle
2 15 (14.42%) Informatica
3 10 (9.62%) Cloudera
3 10 (9.62%) Talend
4 7 (6.73%) VMware
5 6 (5.77%) Cisco
5 6 (5.77%) Sybase
6 5 (4.81%) Microsoft
6 5 (4.81%) Red Hat
7 4 (3.85%) Solace
7 4 (3.85%) Teradata
8 2 (1.92%) Fortinet
8 2 (1.92%) Google
8 2 (1.92%) Vertica
9 1 (0.96%) Databricks
9 1 (0.96%) Dynatrace
9 1 (0.96%) Palo Alto
9 1 (0.96%) Perforce
9 1 (0.96%) Salesforce.com
9 1 (0.96%) StreamSets