Period
to 17 October 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 17 October 2021 with a comparison to the same period in the previous 2 years.

Unix
Central London > City of London
6 months to
17 Oct 2021
Same period 2020 Same period 2019
Rank 114 89 83
Rank change year-on-year -25 -6 +10
Permanent jobs citing Unix 150 110 377
As % of all permanent jobs advertised in the City of London 2.55% 3.08% 3.75%
As % of the Operating Systems category 17.01% 14.78% 16.21%
Number of salaries quoted 140 101 311
10th Percentile £47,500 £52,500 £45,000
25th Percentile £56,250 £62,500 £52,500
Median annual salary (50th Percentile) £71,250 £70,000 £72,500
Median % change year-on-year +1.79% -3.45% +3.57%
75th Percentile £91,875 £85,000 £92,500
90th Percentile £108,875 £91,250 £115,000
Central London median annual salary £70,000 £70,000 £72,500
% change year-on-year - -3.45% +3.57%

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 882 744 2,326
As % of all permanent IT jobs advertised in the City of London 14.97% 20.80% 23.16%
Number of salaries quoted 801 664 1,999
10th Percentile £33,750 £32,500 £28,500
25th Percentile £46,250 £45,750 £42,500
Median annual salary (50th Percentile) £65,000 £65,000 £60,000
Median % change year-on-year - +8.33% -
75th Percentile £85,000 £77,500 £80,000
90th Percentile £100,000 £91,425 £97,500
Central London median annual salary £62,500 £65,000 £60,000
% change year-on-year -3.85% +8.33% -

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 17 October 2021.

Salary histogram for Unix in the City of London

For the 6 months to 17 October 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 94 (62.67%) Linux
2 79 (52.67%) Finance
3 75 (50.00%) Python
4 67 (44.67%) AWS
5 60 (40.00%) Java
6 46 (30.67%) Windows
6 46 (30.67%) DevOps
7 44 (29.33%) SQL
8 35 (23.33%) Agile Software Development
8 35 (23.33%) Azure
9 32 (21.33%) Terraform
10 26 (17.33%) Docker
11 24 (16.00%) Front Office
11 24 (16.00%) Banking
12 23 (15.33%) SDLC
13 22 (14.67%) Site Reliability Engineering
14 21 (14.00%) Software Engineering
15 20 (13.33%) Oracle
15 20 (13.33%) Kubernetes
16 19 (12.67%) Advertising
17 18 (12.00%) Multithreading
17 18 (12.00%) Low Latency
17 18 (12.00%) Analytics
18 17 (11.33%) Bash Shell
18 17 (11.33%) Test Automation
18 17 (11.33%) Google
18 17 (11.33%) Data Warehouse
18 17 (11.33%) OOD
19 16 (10.67%) Scrum
19 16 (10.67%) Hadoop

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 14 (9.33%) SAS
2 5 (3.33%) Apache Spark
3 4 (2.67%) Appian
3 4 (2.67%) Confluence
4 3 (2.00%) Elasticsearch
5 2 (1.33%) OpenStack
6 1 (0.67%) Oracle Workflow
Business Applications
1 3 (2.00%) Temenos Globus
1 3 (2.00%) Temenos T24
2 1 (0.67%) Bloomberg TOMS
2 1 (0.67%) Oracle EBS
2 1 (0.67%) Oracle EBS R12
2 1 (0.67%) Salerio
2 1 (0.67%) SunGard Martini
Cloud Services
1 67 (44.67%) AWS
2 35 (23.33%) Azure
3 16 (10.67%) AWS CloudFormation
4 13 (8.67%) Serverless
5 12 (8.00%) GCP
6 11 (7.33%) Amazon EC2
6 11 (7.33%) AWS Lambda
7 10 (6.67%) Amazon ECS
8 9 (6.00%) Amazon S3
9 8 (5.33%) AWS Fargate
10 6 (4.00%) Virtual Private Cloud
11 5 (3.33%) Snowflake
12 4 (2.67%) Amazon EMR
12 4 (2.67%) Amazon Kinesis
12 4 (2.67%) Azure Active Directory
12 4 (2.67%) Collibra
12 4 (2.67%) IaaS
12 4 (2.67%) Power Platform
13 3 (2.00%) GitHub
13 3 (2.00%) Microsoft 365
Communications & Networking
1 14 (9.33%) DNS
2 4 (2.67%) LAN
2 4 (2.67%) WAN
3 3 (2.00%) Firewall
3 3 (2.00%) Network Security
3 3 (2.00%) TCP/IP
4 2 (1.33%) Internet
4 2 (1.33%) Intrusion Detection
4 2 (1.33%) Wi-Fi
5 1 (0.67%) Cisco ASA
5 1 (0.67%) SSH
5 1 (0.67%) VPN
Database & Business Intelligence
1 17 (11.33%) Data Warehouse
2 16 (10.67%) Hadoop
3 13 (8.67%) KDB
3 13 (8.67%) PostgreSQL
4 12 (8.00%) Relational Database
4 12 (8.00%) SQL Server
5 9 (6.00%) Amazon Redshift
5 9 (6.00%) SQL Server Integration Services
6 8 (5.33%) SQL Server Reporting Services
7 7 (4.67%) Apache Cassandra
7 7 (4.67%) Big Data
7 7 (4.67%) MongoDB
7 7 (4.67%) NoSQL
8 6 (4.00%) MySQL
9 5 (3.33%) Oracle Database
9 5 (3.33%) Pentaho
10 4 (2.67%) Amazon RDS
10 4 (2.67%) Apache Hive
10 4 (2.67%) Impala
10 4 (2.67%) Tableau
Development Applications
1 15 (10.00%) Jenkins
2 14 (9.33%) JIRA
3 11 (7.33%) Git (software)
4 9 (6.00%) Bitbucket
4 9 (6.00%) Cucumber
4 9 (6.00%) GitLab
4 9 (6.00%) REST Assured
4 9 (6.00%) Selenium
5 4 (2.67%) Atlassian Bamboo
5 4 (2.67%) SoapUI
5 4 (2.67%) TeamCity
6 3 (2.00%) Octopus Deploy
7 1 (0.67%) CircleCI
7 1 (0.67%) Oracle APEX
7 1 (0.67%) Oracle Forms
7 1 (0.67%) PowerBuilder
7 1 (0.67%) Toad
General
1 79 (52.67%) Finance
2 24 (16.00%) Banking
2 24 (16.00%) Front Office
3 19 (12.67%) Advertising
4 16 (10.67%) Social Skills
5 13 (8.67%) Investment Banking
6 5 (3.33%) Public Sector
7 4 (2.67%) Analytical Skills
7 4 (2.67%) Back Office
8 3 (2.00%) Financial Institution
9 1 (0.67%) Publishing
9 1 (0.67%) Retail
Job Titles
1 29 (19.33%) Developer
2 24 (16.00%) DevOps Engineer
3 19 (12.67%) Applications Support
4 15 (10.00%) Analyst
5 13 (8.67%) Java Developer
6 12 (8.00%) Senior DevOps
6 12 (8.00%) Senior DevOps Engineer
7 11 (7.33%) AWS Engineer
7 11 (7.33%) Cloud Engineer
7 11 (7.33%) Senior Developer
8 10 (6.67%) Applications Support Analyst
8 10 (6.67%) Support Analyst
8 10 (6.67%) Team Leader
9 9 (6.00%) Automation Engineer
9 9 (6.00%) QA Automation Engineer
9 9 (6.00%) QA Engineer
9 9 (6.00%) Site Reliability Engineer
10 7 (4.67%) Data Engineer
10 7 (4.67%) Senior Java Developer
10 7 (4.67%) Site Engineer
Libraries, Frameworks & Software Standards
1 16 (10.67%) FIX Protocol
2 13 (8.67%) Spring
3 10 (6.67%) Elastic Stack
4 9 (6.00%) Gherkin
5 8 (5.33%) Kafka
6 6 (4.00%) STL
7 5 (3.33%) .NET
8 4 (2.67%) Web Services
9 3 (2.00%) XML
10 2 (1.33%) JSON
10 2 (1.33%) Play Framework
10 2 (1.33%) PySpark
11 1 (0.67%) Akka
11 1 (0.67%) Angular 2
11 1 (0.67%) boto
11 1 (0.67%) Flutter
11 1 (0.67%) GraphQL
11 1 (0.67%) gRPC
11 1 (0.67%) React Native
11 1 (0.67%) Spring Boot
Miscellaneous
1 14 (9.33%) Fixed Income
2 9 (6.00%) Data Structures
2 9 (6.00%) Equities
3 8 (5.33%) Derivative
4 6 (4.00%) Greenfield Project
4 6 (4.00%) Spread Betting
5 5 (3.33%) Algorithms
5 5 (3.33%) Hybrid Cloud
5 5 (3.33%) Self-Motivation
5 5 (3.33%) SWIFT
6 4 (2.67%) Data Centre
6 4 (2.67%) Management Information System
6 4 (2.67%) Public Cloud
7 3 (2.00%) Cloud Native
7 3 (2.00%) Foreign Exchange (FX)
7 3 (2.00%) Hedge funds
8 2 (1.33%) Data Protection Act
8 2 (1.33%) Enterprise Cloud
8 2 (1.33%) PKI
8 2 (1.33%) Replication
Operating Systems
1 94 (62.67%) Linux
2 46 (30.67%) Windows
3 11 (7.33%) Windows Server
4 10 (6.67%) Red Hat Enterprise Linux
5 8 (5.33%) CentOS
6 7 (4.67%) Ubuntu
7 2 (1.33%) Solaris
8 1 (0.67%) Mac OS
8 1 (0.67%) Windows 10
8 1 (0.67%) Windows 7
8 1 (0.67%) Windows Server 2008
Processes & Methodologies
1 46 (30.67%) DevOps
2 35 (23.33%) Agile Software Development
3 23 (15.33%) SDLC
4 22 (14.67%) Site Reliability Engineering
5 21 (14.00%) Software Engineering
6 18 (12.00%) Analytics
6 18 (12.00%) Low Latency
6 18 (12.00%) Multithreading
7 17 (11.33%) OOD
7 17 (11.33%) Test Automation
8 16 (10.67%) Investment Management
8 16 (10.67%) Scrum
9 14 (9.33%) Mentoring
9 14 (9.33%) OO
9 14 (9.33%) Process Improvement
10 13 (8.67%) Coaching
10 13 (8.67%) Data Modelling
10 13 (8.67%) Requirements Gathering
10 13 (8.67%) Software Testing
11 12 (8.00%) Data Analysis
Programming Languages
1 75 (50.00%) Python
2 60 (40.00%) Java
3 44 (29.33%) SQL
4 17 (11.33%) Bash Shell
5 15 (10.00%) C++
6 14 (9.33%) Shell Script
7 13 (8.67%) Perl
8 12 (8.00%) C#
9 11 (7.33%) PowerShell
10 7 (4.67%) JavaScript
10 7 (4.67%) PL/SQL
11 5 (3.33%) Go
12 4 (2.67%) HiveQL
13 3 (2.00%) Scala
14 2 (1.33%) Kotlin
14 2 (1.33%) R
Qualifications
1 10 (6.67%) Degree
2 6 (4.00%) SAS Certification
3 4 (2.67%) AWS Certification
4 3 (2.00%) SC Cleared
4 3 (2.00%) Security Cleared
5 2 (1.33%) BPSS Clearance
5 2 (1.33%) CHECK Team Member
5 2 (1.33%) CISSP
5 2 (1.33%) GIAC
5 2 (1.33%) GPEN
5 2 (1.33%) ITIL Certification
6 1 (0.67%) Computer Science Degree
6 1 (0.67%) ITIL Foundation Certificate
Quality Assurance & Compliance
1 13 (8.67%) QA
2 4 (2.67%) Data Quality
3 1 (0.67%) SLA
System Software
1 26 (17.33%) Docker
2 6 (4.00%) Active Directory
3 4 (2.67%) HDFS
4 2 (1.33%) Hyper-V
4 2 (1.33%) Microsoft App-V
4 2 (1.33%) XenApp
5 1 (0.67%) Virtual Desktop
5 1 (0.67%) Xen
Systems Management
1 32 (21.33%) Terraform
2 20 (13.33%) Kubernetes
3 14 (9.33%) Ansible
4 6 (4.00%) Nagios
4 6 (4.00%) Puppet
5 3 (2.00%) Control-M
5 3 (2.00%) Docker Swarm
5 3 (2.00%) Grafana
5 3 (2.00%) Packer
6 2 (1.33%) EdgeSight
6 2 (1.33%) NetBackup
6 2 (1.33%) Rundeck
6 2 (1.33%) Salt
6 2 (1.33%) SCCM
6 2 (1.33%) SCOM
6 2 (1.33%) SCOrch
6 2 (1.33%) SCVMM
7 1 (0.67%) Opscode Chef
7 1 (0.67%) Opsgenie
Vendors
1 20 (13.33%) Oracle
2 17 (11.33%) Google
3 11 (7.33%) Microsoft
4 9 (6.00%) Informatica
5 7 (4.67%) Atlassian
6 5 (3.33%) Talend
7 4 (2.67%) Alteryx
7 4 (2.67%) Cloudera
7 4 (2.67%) Greenplum
7 4 (2.67%) Hortonworks
7 4 (2.67%) Rapid7
7 4 (2.67%) Teradata
8 3 (2.00%) Bloomberg
8 3 (2.00%) DataFlux
8 3 (2.00%) jBASE
8 3 (2.00%) Red Hat
8 3 (2.00%) ServiceNow
8 3 (2.00%) Temenos
9 2 (1.33%) PagerDuty
9 2 (1.33%) Tradeweb