Period
to 29 July 2021

The following table provides summary statistics for permanent job vacancies advertised in 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 29 July 2021 with a comparison to the same period in the previous 2 years.

Unix
England > London
6 months to
29 Jul 2021
Same period 2020 Same period 2019
Rank 144 121 90
Rank change year-on-year -23 -31 -12
Permanent jobs citing Unix 1,099 779 1,992
As % of all permanent jobs advertised in London 2.44% 2.72% 3.49%
As % of the Operating Systems category 14.92% 14.05% 16.14%
Number of salaries quoted 675 622 1,566
10th Percentile £49,400 £42,719 £41,250
25th Percentile £60,000 £54,198 £50,000
Median annual salary (50th Percentile) £72,500 £70,000 £70,000
Median % change year-on-year +3.57% - +7.69%
75th Percentile £87,500 £85,000 £85,000
90th Percentile £99,500 £100,000 £100,000
England median annual salary £62,500 £60,000 £56,000
% change year-on-year +4.17% +7.14% +1.82%

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 London with a requirement for operating system skills.

All Operating Systems
London
Permanent vacancies with a requirement for operating system skills 7,368 5,543 12,345
As % of all permanent IT jobs advertised in London 16.36% 19.34% 21.60%
Number of salaries quoted 5,159 4,603 10,350
10th Percentile £35,000 £32,500 £30,000
25th Percentile £47,500 £45,000 £41,250
Median annual salary (50th Percentile) £65,000 £62,500 £60,000
Median % change year-on-year +4.00% +4.17% +4.35%
75th Percentile £85,000 £77,500 £77,500
90th Percentile £97,500 £93,750 £92,500
England median annual salary £50,000 £50,000 £47,500
% change year-on-year - +5.26% -

Unix
Job Vacancy Trend in London

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

Job vacancy trend for Unix in London

Unix
Salary Trend in London

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

Salary trend for Unix in London

Unix
Salary Histogram in London

Salary distribution for jobs citing Unix in London over the 6 months to 29 July 2021.

Salary histogram for Unix in London

Unix
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Unix within the London region over the 6 months to 29 July 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
Central London -7 176 £75,000 +4.17% 49
West London -22 29 £60,000 +20.00% 14
South London +1 21 £65,000 +8.33% 3
East London +7 13 £72,500 +3.57% 6
Unix
England

For the 6 months to 29 July 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 London region with a requirement for Unix.

1 702 (63.88%) Linux
2 542 (49.32%) Python
3 459 (41.77%) Finance
4 381 (34.67%) SQL
5 377 (34.30%) AWS
6 361 (32.85%) Java
7 340 (30.94%) Agile Software Development
8 316 (28.75%) Docker
9 294 (26.75%) Windows
10 282 (25.66%) DevOps
11 227 (20.66%) Azure
12 224 (20.38%) Social Skills
13 213 (19.38%) JavaScript
14 203 (18.47%) Oracle
15 201 (18.29%) Software Engineering
16 200 (18.20%) Git (software)
17 189 (17.20%) Banking
18 184 (16.74%) Kubernetes
19 179 (16.29%) Relational Database
20 178 (16.20%) Bash Shell
21 171 (15.56%) Jenkins
22 161 (14.65%) Ansible
23 150 (13.65%) TDD
24 137 (12.47%) GCP
25 136 (12.37%) Perl
26 133 (12.10%) Terraform
27 132 (12.01%) Microservices
28 130 (11.83%) Spring
29 128 (11.65%) PostgreSQL
30 127 (11.56%) Problem-Solving

Unix
Co-occurring IT Skills in 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 72 (6.55%) Apache Spark
2 50 (4.55%) Elasticsearch
3 33 (3.00%) Tornado
4 25 (2.27%) Apache
5 22 (2.00%) Confluence
6 19 (1.73%) Oracle SOA Suite
7 15 (1.36%) Tomcat
8 12 (1.09%) Apache Airflow
9 10 (0.91%) IIS
9 10 (0.91%) SAS
10 9 (0.82%) nginx
10 9 (0.82%) OpenStack
11 7 (0.64%) Jupyter
11 7 (0.64%) WebSphere
12 5 (0.45%) Drupal
12 5 (0.45%) JCAPS
12 5 (0.45%) MTS
13 4 (0.36%) Cloud Foundry
13 4 (0.36%) JBoss
14 3 (0.27%) Facebook Platform
Applications
1 17 (1.55%) Adobe Illustrator
1 17 (1.55%) GIMP
1 17 (1.55%) Photoshop
2 16 (1.46%) Microsoft Excel
3 10 (0.91%) MS Visio
4 9 (0.82%) Microsoft Office
5 6 (0.55%) Adobe After Effects
5 6 (0.55%) Adobe XD
5 6 (0.55%) Figma
5 6 (0.55%) Microsoft PowerPoint
5 6 (0.55%) Sketch
6 1 (0.091%) ImageReady
Business Applications
1 10 (0.91%) R3 Corda
2 4 (0.36%) Oracle Applications
3 3 (0.27%) Temenos T24
4 2 (0.18%) Distributed Ledger
4 2 (0.18%) Sentinel
5 1 (0.091%) Dynamics AX
5 1 (0.091%) Dynamics CRM
5 1 (0.091%) IntelliMatch
5 1 (0.091%) Markit EDM
5 1 (0.091%) Minerva
5 1 (0.091%) NetSuite
5 1 (0.091%) Oracle EBS
5 1 (0.091%) Oracle EBS R12
5 1 (0.091%) Refinitiv Enterprise Platform
5 1 (0.091%) RMDS
5 1 (0.091%) Salerio
5 1 (0.091%) SAP HCM
5 1 (0.091%) SunGard Martini
5 1 (0.091%) Temenos Globus
Cloud Services
1 377 (34.30%) AWS
2 227 (20.66%) Azure
3 137 (12.47%) GCP
4 107 (9.74%) GitHub
5 72 (6.55%) SaaS
6 64 (5.82%) Amazon S3
6 64 (5.82%) Serverless
7 58 (5.28%) AWS Lambda
8 52 (4.73%) AWS CloudFormation
9 48 (4.37%) PaaS
10 41 (3.73%) Amazon EC2
11 33 (3.00%) Amazon EKS
12 31 (2.82%) IaaS
13 29 (2.64%) Amazon SQS
14 20 (1.82%) Amazon ECS
14 20 (1.82%) Snowflake
15 19 (1.73%) Microsoft 365
16 16 (1.46%) Basecamp
16 16 (1.46%) Cloud Computing
16 16 (1.46%) Heroku
Communications & Networking
1 71 (6.46%) Firewall
2 66 (6.01%) TCP/IP
3 27 (2.46%) SSH
3 27 (2.46%) VPN
4 22 (2.00%) HTTP
4 22 (2.00%) WAN
5 21 (1.91%) LAN
6 20 (1.82%) F5 BIG-IP GTM
6 20 (1.82%) F5 BIG-IP LTM
7 18 (1.64%) Cisco ASA
8 16 (1.46%) DNS
9 15 (1.36%) Internet
9 15 (1.36%) IPv4
10 14 (1.27%) DHCP
10 14 (1.27%) FIX Connectivity
11 13 (1.18%) Broadband
12 12 (1.09%) SSL
13 11 (1.00%) tcpdump
14 10 (0.91%) Network Security
14 10 (0.91%) Wireshark
Database & Business Intelligence
1 179 (16.29%) Relational Database
2 128 (11.65%) PostgreSQL
3 112 (10.19%) MongoDB
4 107 (9.74%) SQL Server
5 105 (9.55%) NoSQL
6 94 (8.55%) MySQL
7 67 (6.10%) Hadoop
8 57 (5.19%) RDBMS
8 57 (5.19%) Redis
9 49 (4.46%) Data Warehouse
9 49 (4.46%) Oracle Database
10 47 (4.28%) DB2
11 40 (3.64%) SQL Server Integration Services
11 40 (3.64%) SQL Server Reporting Services
12 39 (3.55%) Big Data
13 32 (2.91%) Apache Cassandra
14 31 (2.82%) KDB
15 20 (1.82%) MariaDB
16 18 (1.64%) Amazon RDS
17 16 (1.46%) Amazon DynamoDB
Development Applications
1 200 (18.20%) Git (software)
2 171 (15.56%) Jenkins
3 124 (11.28%) JIRA
4 85 (7.73%) GitLab
5 50 (4.55%) IntelliJ
5 50 (4.55%) Maven
6 45 (4.09%) Bitbucket Server
6 45 (4.09%) Eclipse
7 43 (3.91%) Gradle
8 33 (3.00%) RSpec
9 30 (2.73%) Cucumber
10 25 (2.27%) JMeter
11 23 (2.09%) Bitbucket
12 21 (1.91%) Selenium
13 20 (1.82%) Sonatype Nexus
14 19 (1.73%) JUnit
15 18 (1.64%) TeamCity
16 17 (1.55%) webpack
17 16 (1.46%) GoCD
17 16 (1.46%) Pivotal Tracker
General
1 459 (41.77%) Finance
2 224 (20.38%) Social Skills
3 189 (17.20%) Banking
4 103 (9.37%) Front Office
5 100 (9.10%) Analytical Skills
6 96 (8.74%) Games
7 82 (7.46%) Back Office
8 80 (7.28%) Investment Banking
9 63 (5.73%) Legal
10 57 (5.19%) Marketing
11 42 (3.82%) Online Betting
12 29 (2.64%) Advertising
13 27 (2.46%) Retail
14 26 (2.37%) Electronics
15 17 (1.55%) Law
16 16 (1.46%) Inclusion and Diversity
16 16 (1.46%) Public Sector
17 15 (1.36%) Local Government
18 14 (1.27%) Financial Institution
19 11 (1.00%) Presentation Skills
Job Titles
1 353 (32.12%) Developer
2 134 (12.19%) Java Developer
3 105 (9.55%) DevOps Engineer
4 95 (8.64%) Senior Developer
5 92 (8.37%) Applications Support
6 90 (8.19%) Analyst
7 61 (5.55%) Software Engineer
7 61 (5.55%) Support Analyst
8 51 (4.64%) Software Developer
9 47 (4.28%) Senior Java Developer
10 42 (3.82%) Applications Support Analyst
11 40 (3.64%) Full Stack Developer
12 36 (3.28%) Systems Engineer
13 34 (3.09%) Backend Developer
14 29 (2.64%) Unix Support
15 28 (2.55%) Senior DevOps
15 28 (2.55%) Senior DevOps Engineer
16 26 (2.37%) Automation Engineer
16 26 (2.37%) Platform Engineer
17 25 (2.27%) Senior Full Stack Developer
Libraries, Frameworks & Software Standards
1 130 (11.83%) Spring
2 114 (10.37%) React
3 101 (9.19%) RESTful
4 92 (8.37%) FIX Protocol
4 92 (8.37%) Node.js
5 85 (7.73%) Web Services
6 82 (7.46%) Kafka
7 79 (7.19%) REST
8 77 (7.01%) AngularJS
9 63 (5.73%) Spring Boot
10 61 (5.55%) HTML
11 59 (5.37%) .NET
11 59 (5.37%) CSS
11 59 (5.37%) RabbitMQ
12 57 (5.19%) XML
13 48 (4.37%) Vue.js
14 43 (3.91%) Ruby on Rails
15 42 (3.82%) GraphQL
16 38 (3.46%) Middleware
17 31 (2.82%) Sass
Miscellaneous
1 122 (11.10%) Derivative
2 75 (6.82%) Linux Command Line
3 65 (5.91%) Algorithms
4 60 (5.46%) Equities
5 50 (4.55%) Fixed Income
6 47 (4.28%) Blog
7 45 (4.09%) Management Information System
8 44 (4.00%) Cloud Native
9 40 (3.64%) Foreign Exchange (FX)
10 39 (3.55%) Data Centre
11 37 (3.37%) Data Structures
12 36 (3.28%) Greenfield Project
13 35 (3.18%) Public Cloud
13 35 (3.18%) User Experience
14 31 (2.82%) PKI
15 30 (2.73%) SWIFT
16 23 (2.09%) Client/Server
16 23 (2.09%) Self-Motivation
16 23 (2.09%) Virtual Team
17 20 (1.82%) Cyberthreat
Operating Systems
1 702 (63.88%) Linux
2 294 (26.75%) Windows
3 60 (5.46%) Windows Server
4 52 (4.73%) Red Hat Enterprise Linux
5 39 (3.55%) CentOS
6 37 (3.37%) Ubuntu
7 19 (1.73%) Solaris
8 17 (1.55%) Android
9 16 (1.46%) Apple iOS
10 15 (1.36%) Embedded Linux
11 10 (0.91%) Mac OS
12 6 (0.55%) Debian
12 6 (0.55%) Oracle Linux
13 4 (0.36%) Mac OS X
14 3 (0.27%) AIX
14 3 (0.27%) Fedora
14 3 (0.27%) Windows 10
15 2 (0.18%) CoreOS
15 2 (0.18%) Windows Server 2008
15 2 (0.18%) Windows Server 2016
Processes & Methodologies
1 340 (30.94%) Agile Software Development
2 282 (25.66%) DevOps
3 201 (18.29%) Software Engineering
4 150 (13.65%) TDD
5 132 (12.01%) Microservices
6 127 (11.56%) Problem-Solving
7 124 (11.28%) Test Automation
8 116 (10.56%) Full Stack Development
9 114 (10.37%) Scrum
10 86 (7.83%) Analytics
11 84 (7.64%) SDLC
12 79 (7.19%) Infrastructure as Code
13 77 (7.01%) Fintech
14 76 (6.92%) Continuous Integration
14 76 (6.92%) OO
14 76 (6.92%) Open Source
15 75 (6.82%) Configuration Management
16 71 (6.46%) Data Management
17 67 (6.10%) Computer Science
18 64 (5.82%) Deployment Automation
Programming Languages
1 542 (49.32%) Python
2 381 (34.67%) SQL
3 361 (32.85%) Java
4 213 (19.38%) JavaScript
5 178 (16.20%) Bash Shell
6 136 (12.37%) Perl
7 121 (11.01%) Shell Script
8 117 (10.65%) C++
9 102 (9.28%) C#
10 96 (8.74%) TypeScript
11 75 (6.82%) PowerShell
12 73 (6.64%) Ruby
13 71 (6.46%) C
14 55 (5.00%) Scala
15 50 (4.55%) R
16 43 (3.91%) Kotlin
17 39 (3.55%) PHP
18 37 (3.37%) Go
18 37 (3.37%) PL/SQL
19 29 (2.64%) Groovy
Qualifications
1 95 (8.64%) Degree
2 48 (4.37%) Computer Science Degree
3 32 (2.91%) Security Cleared
4 21 (1.91%) SC Cleared
5 14 (1.27%) CISSP
6 12 (1.09%) RHCSA
7 11 (1.00%) Cisco Certification
8 10 (0.91%) CCNP
8 10 (0.91%) RHCE
9 7 (0.64%) CEH
10 6 (0.55%) BPSS Clearance
10 6 (0.55%) CompTIA Security+
10 6 (0.55%) ISTQB
10 6 (0.55%) PhD
10 6 (0.55%) SANS
11 5 (0.45%) OSCP
12 4 (0.36%) CCNA
12 4 (0.36%) ITIL Foundation Certificate
13 3 (0.27%) Microsoft Certification
13 3 (0.27%) SAS Certification
Quality Assurance & Compliance
1 109 (9.92%) QA
2 48 (4.37%) MiFID
3 24 (2.18%) EMIR
4 19 (1.73%) ISO/IEC 27001
5 17 (1.55%) PCI DSS
6 16 (1.46%) COBIT
7 7 (0.64%) Sarbanes-Oxley
8 6 (0.55%) GLBA
8 6 (0.55%) GRC
8 6 (0.55%) ISO 15022
8 6 (0.55%) ISO 20022
8 6 (0.55%) NIST
9 5 (0.45%) Data Quality
9 5 (0.45%) HL7
10 4 (0.36%) ISO 9001
10 4 (0.36%) SLA
11 3 (0.27%) FedRAMP
12 1 (0.091%) GDPR
12 1 (0.091%) NCSC
12 1 (0.091%) PMO
System Software
1 316 (28.75%) Docker
2 34 (3.09%) Active Directory
3 24 (2.18%) VMware Infrastructure
4 14 (1.27%) Virtual Servers
5 10 (0.91%) Hyper-V
6 8 (0.73%) Virtual Machines
7 7 (0.64%) HDFS
8 5 (0.45%) Oracle RAC
9 4 (0.36%) Xen
10 3 (0.27%) vSphere
11 2 (0.18%) Platform Symphony
11 2 (0.18%) VMware Workstation
12 1 (0.091%) Ceph
12 1 (0.091%) Firmware
12 1 (0.091%) GridGain
12 1 (0.091%) iptables
12 1 (0.091%) LXC
12 1 (0.091%) Microsoft App-V
12 1 (0.091%) NFS
12 1 (0.091%) Squid
Systems Management
1 184 (16.74%) Kubernetes
2 161 (14.65%) Ansible
3 133 (12.10%) Terraform
4 91 (8.28%) Puppet
5 55 (5.00%) Opscode Chef
6 33 (3.00%) Prometheus
7 24 (2.18%) Nagios
8 23 (2.09%) Grafana
9 10 (0.91%) SCCM
10 9 (0.82%) CFEngine
10 9 (0.82%) ITRS Geneos
10 9 (0.82%) Packer
11 7 (0.64%) Docker Swarm
11 7 (0.64%) Nmap
11 7 (0.64%) Rundeck
11 7 (0.64%) Salt
12 6 (0.55%) Hadoop YARN
12 6 (0.55%) Kibana
12 6 (0.55%) logstash
12 6 (0.55%) OpenNMS
Vendors
1 203 (18.47%) Oracle
2 83 (7.55%) Microsoft
3 77 (7.01%) Google
4 63 (5.73%) Sybase
5 58 (5.28%) Cisco
6 56 (5.10%) Red Hat
7 45 (4.09%) VMware
8 44 (4.00%) Splunk
9 34 (3.09%) IBM
10 33 (3.00%) ServiceNow
11 24 (2.18%) Adobe
12 23 (2.09%) CheckPoint
13 22 (2.00%) Bloomberg
14 21 (1.91%) Dell
15 20 (1.82%) F5
15 20 (1.82%) Greenplum
16 17 (1.55%) Apple
16 17 (1.55%) HP
16 17 (1.55%) Zscaler
17 14 (1.27%) Samsung