Period
to 10 May 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 10 May 2021 with a comparison to the same period in the previous 2 years.

Unix
Central London > City of London
6 months to
10 May 2021
Same period 2020 Same period 2019
Rank 101 107 84
Rank change year-on-year +6 -23 +1
Permanent jobs citing Unix 144 203 364
As % of all permanent jobs advertised in the City of London 2.92% 2.70% 3.58%
As % of the Operating Systems category 19.12% 13.36% 15.99%
Number of salaries quoted 126 161 326
10th Percentile £50,625 £50,000 £44,375
25th Percentile £57,500 £57,500 £52,500
Median annual salary (50th Percentile) £73,750 £72,500 £67,500
Median % change year-on-year +1.72% +7.41% -6.90%
75th Percentile £90,938 £86,250 £82,500
90th Percentile £105,000 £107,500 £96,250
Central London median annual salary £75,000 £72,000 £70,000
% change year-on-year +4.17% +2.86% -3.45%

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 1,520 2,277
As % of all permanent IT jobs advertised in the City of London 15.26% 20.20% 22.39%
Number of salaries quoted 665 1,330 2,046
10th Percentile £41,250 £29,750 £30,000
25th Percentile £51,250 £42,500 £43,750
Median annual salary (50th Percentile) £67,500 £62,000 £60,000
Median % change year-on-year +8.87% +3.33% -
75th Percentile £85,000 £77,500 £78,750
90th Percentile £97,000 £91,250 £92,500
Central London median annual salary £62,500 £61,000 £60,000
% change year-on-year +2.46% +1.67% +4.35%

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 10 May 2021.

Salary histogram for Unix in the City of London

For the 6 months to 10 May 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.

1 102 (70.83%) Linux
2 81 (56.25%) Finance
3 66 (45.83%) Python
4 53 (36.81%) SQL
5 48 (33.33%) AWS
6 46 (31.94%) Windows
7 45 (31.25%) Java
8 39 (27.08%) DevOps
9 31 (21.53%) Agile Software Development
9 31 (21.53%) Banking
10 29 (20.14%) QA
10 29 (20.14%) Azure
11 25 (17.36%) SDLC
12 24 (16.67%) Low Latency
12 24 (16.67%) Oracle
13 23 (15.97%) Red Hat Enterprise Linux
14 22 (15.28%) C++
14 22 (15.28%) Ansible
15 20 (13.89%) Bash Shell
15 20 (13.89%) Multithreading
16 19 (13.19%) Git (software)
16 19 (13.19%) Docker
17 17 (11.81%) SQL Server
17 17 (11.81%) Shell Script
18 16 (11.11%) Advertising
18 16 (11.11%) Software Engineering
18 16 (11.11%) Kubernetes
19 15 (10.42%) Jenkins
19 15 (10.42%) Derivative
19 15 (10.42%) CentOS

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 (6.94%) SAS
2 5 (3.47%) Apache Spark
3 4 (2.78%) Apache
3 4 (2.78%) Elasticsearch
4 3 (2.08%) WebSphere
5 1 (0.69%) Appian
5 1 (0.69%) Confluence
5 1 (0.69%) Ethereum
5 1 (0.69%) MS Exchange
5 1 (0.69%) OpenStack
Business Applications
1 3 (2.08%) Temenos T24
2 1 (0.69%) IntelliMatch
2 1 (0.69%) SunGard Martini
2 1 (0.69%) Temenos Globus
Cloud Services
1 48 (33.33%) AWS
2 29 (20.14%) Azure
3 8 (5.56%) Amazon EC2
3 8 (5.56%) Power Platform
4 7 (4.86%) Amazon S3
4 7 (4.86%) AWS Lambda
4 7 (4.86%) GCP
4 7 (4.86%) IaaS
4 7 (4.86%) Serverless
5 2 (1.39%) PaaS
6 1 (0.69%) AWS CloudFormation
6 1 (0.69%) Azure Data Factory
6 1 (0.69%) Azure Synapse Analytics
6 1 (0.69%) DigitalOcean
6 1 (0.69%) GitHub
6 1 (0.69%) Linode
6 1 (0.69%) Microsoft 365
6 1 (0.69%) OpenShift
Communications & Networking
1 13 (9.03%) TCP/IP
2 5 (3.47%) Multicast
2 5 (3.47%) tcpdump
3 4 (2.78%) Firewall
3 4 (2.78%) SSH
4 3 (2.08%) Intrusion Detection
4 3 (2.08%) Network Security
5 2 (1.39%) BGP
5 2 (1.39%) MPLS
6 1 (0.69%) DNS
6 1 (0.69%) FTP
6 1 (0.69%) iSCSI
6 1 (0.69%) OSPF
6 1 (0.69%) RSVP
6 1 (0.69%) VPLS
6 1 (0.69%) WAN
6 1 (0.69%) Wi-Fi
6 1 (0.69%) Wireshark
Database & Business Intelligence
1 17 (11.81%) SQL Server
2 13 (9.03%) Data Warehouse
3 12 (8.33%) Oracle Database
4 11 (7.64%) Hadoop
4 11 (7.64%) SQL Server Integration Services
4 11 (7.64%) SQL Server Reporting Services
5 8 (5.56%) Power BI
6 7 (4.86%) Apache Hive
6 7 (4.86%) BusinessObjects
6 7 (4.86%) Impala
6 7 (4.86%) Pentaho
7 6 (4.17%) Relational Database
8 4 (2.78%) NoSQL
9 3 (2.08%) Apache Cassandra
9 3 (2.08%) Blockchain
9 3 (2.08%) KDB
9 3 (2.08%) MongoDB
9 3 (2.08%) PostgreSQL
10 2 (1.39%) RDBMS
10 2 (1.39%) Star Schema
Development Applications
1 19 (13.19%) Git (software)
2 15 (10.42%) Jenkins
3 10 (6.94%) GitLab
4 9 (6.25%) Bitbucket
4 9 (6.25%) Cucumber
4 9 (6.25%) JIRA
4 9 (6.25%) REST Assured
4 9 (6.25%) Selenium
4 9 (6.25%) SoapUI
5 5 (3.47%) TeamCity
6 1 (0.69%) LoadRunner
6 1 (0.69%) Oracle APEX
6 1 (0.69%) Sonatype Nexus
General
1 81 (56.25%) Finance
2 31 (21.53%) Banking
3 16 (11.11%) Advertising
4 14 (9.72%) Social Skills
5 12 (8.33%) Analytical Skills
6 11 (7.64%) Front Office
7 10 (6.94%) Investment Banking
8 8 (5.56%) Back Office
9 2 (1.39%) Retail Banking
10 1 (0.69%) Financial Institution
10 1 (0.69%) Presentation Skills
10 1 (0.69%) Public Sector
10 1 (0.69%) Retail
Job Titles
1 39 (27.08%) Developer
2 24 (16.67%) DevOps Engineer
3 20 (13.89%) Senior Developer
4 16 (11.11%) Java Developer
5 13 (9.03%) Applications Support
6 12 (8.33%) Analyst
6 12 (8.33%) Senior Java Developer
7 11 (7.64%) Senior DevOps
7 11 (7.64%) Senior DevOps Engineer
8 9 (6.25%) Automation Engineer
8 9 (6.25%) C++ Developer
8 9 (6.25%) Data Engineer
8 9 (6.25%) QA Engineer
9 8 (5.56%) Linux Engineer
9 8 (5.56%) Team Leader
10 7 (4.86%) QA Automation Engineer
11 6 (4.17%) Applications Support Analyst
11 6 (4.17%) Lead Developer
11 6 (4.17%) Python Developer
11 6 (4.17%) Support Analyst
Libraries, Frameworks & Software Standards
1 13 (9.03%) Elastic Stack
1 13 (9.03%) FIX Protocol
2 12 (8.33%) STL
3 10 (6.94%) Kafka
4 9 (6.25%) Gherkin
4 9 (6.25%) XML
5 8 (5.56%) .NET
6 6 (4.17%) Middleware
6 6 (4.17%) PySpark
7 5 (3.47%) JMS
7 5 (3.47%) JSON
8 4 (2.78%) Ultra Messaging
8 4 (2.78%) XSLT
9 3 (2.08%) Django
9 3 (2.08%) RESTful
9 3 (2.08%) Spring
9 3 (2.08%) WebSphere MQ
10 2 (1.39%) ASP.NET
11 1 (0.69%) RabbitMQ
11 1 (0.69%) TIBCO EMS
Miscellaneous
1 15 (10.42%) Derivative
2 13 (9.03%) Greenfield Project
3 12 (8.33%) Spread Betting
4 11 (7.64%) Fixed Income
5 8 (5.56%) Equities
6 5 (3.47%) Foreign Exchange (FX)
6 5 (3.47%) OTC Derivatives
7 4 (2.78%) Data Structures
7 4 (2.78%) Exotic Derivative
7 4 (2.78%) Reference Data
8 3 (2.08%) Algorithms
9 2 (1.39%) Enterprise Software
9 2 (1.39%) Linux Command Line
9 2 (1.39%) PKI
9 2 (1.39%) SWIFT
10 1 (0.69%) Clustering
10 1 (0.69%) Credit Derivative
10 1 (0.69%) Equity Derivative
10 1 (0.69%) Management Information System
10 1 (0.69%) Market Risk
Operating Systems
1 102 (70.83%) Linux
2 46 (31.94%) Windows
3 23 (15.97%) Red Hat Enterprise Linux
4 15 (10.42%) CentOS
5 9 (6.25%) Ubuntu
6 3 (2.08%) Windows Server
7 1 (0.69%) Android
7 1 (0.69%) Apple iOS
Processes & Methodologies
1 39 (27.08%) DevOps
2 31 (21.53%) Agile Software Development
3 25 (17.36%) SDLC
4 24 (16.67%) Low Latency
5 20 (13.89%) Multithreading
6 16 (11.11%) Software Engineering
7 15 (10.42%) ETL
7 15 (10.42%) OOP
8 14 (9.72%) OOD
8 14 (9.72%) Site Reliability Engineering
8 14 (9.72%) Test Automation
9 13 (9.03%) Analytics
9 13 (9.03%) Problem-Solving
10 11 (7.64%) Automated Trading
10 11 (7.64%) Fintech
11 10 (6.94%) Data Analysis
11 10 (6.94%) Data Modelling
11 10 (6.94%) Electronic Trading
12 9 (6.25%) Configuration Management
12 9 (6.25%) OO
Programming Languages
1 66 (45.83%) Python
2 53 (36.81%) SQL
3 45 (31.25%) Java
4 22 (15.28%) C++
5 20 (13.89%) Bash Shell
6 17 (11.81%) Shell Script
7 12 (8.33%) JavaScript
8 9 (6.25%) C#
8 9 (6.25%) Perl
9 8 (5.56%) PL/SQL
10 7 (4.86%) HiveQL
10 7 (4.86%) PowerShell
11 5 (3.47%) Scala
12 2 (1.39%) Haskell
12 2 (1.39%) Kotlin
12 2 (1.39%) PHP
12 2 (1.39%) R
12 2 (1.39%) Ruby
13 1 (0.69%) Go
13 1 (0.69%) Java 8
Qualifications
1 8 (5.56%) Degree
2 4 (2.78%) ITIL Foundation Certificate
3 3 (2.08%) CISSP
3 3 (2.08%) GSEC
4 2 (1.39%) Computer Science Degree
5 1 (0.69%) BPSS Clearance
5 1 (0.69%) JNCIE
5 1 (0.69%) SAS Certification
5 1 (0.69%) SC Cleared
5 1 (0.69%) Security Cleared
Quality Assurance & Compliance
1 29 (20.14%) QA
2 1 (0.69%) Data Quality
2 1 (0.69%) GRC
2 1 (0.69%) SLA
System Software
1 19 (13.19%) Docker
2 7 (4.86%) HDFS
3 6 (4.17%) Active Directory
4 1 (0.69%) Oracle RAC
4 1 (0.69%) Virtual Machines
4 1 (0.69%) Virtual Servers
4 1 (0.69%) VMware Infrastructure
4 1 (0.69%) Xen
Systems Management
1 22 (15.28%) Ansible
2 16 (11.11%) Kubernetes
3 15 (10.42%) Puppet
4 14 (9.72%) Terraform
5 9 (6.25%) Opscode Chef
6 6 (4.17%) Packer
7 5 (3.47%) Prometheus
8 4 (2.78%) Nagios
9 3 (2.08%) Salt
10 1 (0.69%) Control-M
10 1 (0.69%) FortiGate
10 1 (0.69%) Graylog
10 1 (0.69%) NetBackup
10 1 (0.69%) nmon
10 1 (0.69%) Oracle Enterprise Manager
10 1 (0.69%) Oracle RMAN
Vendors
1 24 (16.67%) Oracle
2 9 (6.25%) Informatica
3 8 (5.56%) Cloudera
4 7 (4.86%) Talend
5 5 (3.47%) Cisco
5 5 (3.47%) Google
5 5 (3.47%) IBM
5 5 (3.47%) Microsoft
5 5 (3.47%) Red Hat
5 5 (3.47%) Sybase
6 4 (2.78%) Solace
7 3 (2.08%) Bloomberg
7 3 (2.08%) jBASE
7 3 (2.08%) Temenos
7 3 (2.08%) VMware
8 2 (1.39%) Tradeweb
8 2 (1.39%) Vertica
9 1 (0.69%) Alteryx
9 1 (0.69%) Hortonworks
9 1 (0.69%) Splunk