The following table provides summary statistics for permanent job vacancies advertised in Croydon with a requirement for Firewall skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Firewall over the 3 months to 28 June 2017 with a comparison to the same period in the previous 2 years.

Firewall
London / Croydon
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 20 26 35
Rank change year-on-year +6 +9  
Permanent jobs citing Firewall 18 15 4
As % of all permanent IT jobs advertised in Croydon 9.89% 6.00% 2.12%
As % of the Communications & Networking category 40.91% 20.00% 11.11%
Number of salaries quoted 14 16 3
Median salary £24,000 £48,000 £37,500
Median salary % change year-on-year -50.00% +28.00%  
90% offered a salary of more than £15,750 £33,750 £35,250
10% offered a salary of more than £49,875 £50,000 £38,950
UK excluding London median salary £42,500 £42,000 £42,000
% change year-on-year +1.19% -  

Firewall is in the communications and computer networking skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Croydon with a requirement for communications and computer networking skills.

Communications & Computer Network Skills
Croydon
Permanent job vacancies with a requirement for communications and computer networking skills 44 75 36
As % of all permanent IT job vacancies advertised in Croydon 24.18% 30.00% 19.05%
Number of salaries quoted 134 268 82
Median salary £37,000 £47,500 £35,000
Median salary % change year-on-year -22.10% +35.71%  
90% offered a salary of more than £15,750 £26,250 £24,250
10% offered a salary of more than £53,750 £57,500 £55,000
UK excluding London median salary £42,500 £42,500 £41,500
% change year-on-year - +2.40%  

Firewall
Job Vacancy Trend in Croydon

Job postings citing Firewall as a percentage of all IT jobs advertised in Croydon.

Job vacancy trend for Firewall in Croydon

Firewall
Salary Trend in Croydon

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Firewall in Croydon.

Salary trend for Firewall in Croydon

Firewall
Salary Histogram in Croydon

The salary distribution of IT jobs citing Firewall in Croydon over the 3 months to 28 June 2017.

Salary histogram for Firewall in Croydon

For the 6 months to 28 June 2017, IT jobs citing Firewall also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Croydon region with a requirement for Firewall.

1 21 (87.50%) Cisco
2 11 (45.83%) Windows
2 11 (45.83%) Active Directory
2 11 (45.83%) Windows Server
3 10 (41.67%) Cisco Certification
4 9 (37.50%) VPN
5 8 (33.33%) Microsoft
5 8 (33.33%) Linux
5 8 (33.33%) VoIP
5 8 (33.33%) Citrix
5 8 (33.33%) Cisco ASA
6 7 (29.17%) Juniper
6 7 (29.17%) WAN
6 7 (29.17%) LAN
6 7 (29.17%) CCNP
6 7 (29.17%) TCP/IP
7 6 (25.00%) CCNA
7 6 (25.00%) OSPF
7 6 (25.00%) BGP
7 6 (25.00%) EIGRP
7 6 (25.00%) VMware
7 6 (25.00%) Finance
8 5 (20.83%) Security Management
8 5 (20.83%) NetScreen
8 5 (20.83%) CheckPoint
8 5 (20.83%) Microsoft Office
8 5 (20.83%) XenApp
8 5 (20.83%) WatchGuard
8 5 (20.83%) SonicWALL
8 5 (20.83%) Network Security

Firewall
Co-occurring IT Skills in Croydon 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:

Applications
1 5 (20.83%) Microsoft Office
Cloud Services
1 5 (20.83%) Office 365
2 1 (4.17%) Amazon AWS
Communications & Networking
1 9 (37.50%) VPN
2 8 (33.33%) Cisco ASA
2 8 (33.33%) VoIP
3 7 (29.17%) LAN
3 7 (29.17%) TCP/IP
3 7 (29.17%) WAN
4 6 (25.00%) BGP
4 6 (25.00%) EIGRP
4 6 (25.00%) OSPF
5 5 (20.83%) NetScreen
5 5 (20.83%) Network Security
6 3 (12.50%) Cisco IOS
6 3 (12.50%) Cisco Nexus
6 3 (12.50%) DHCP
6 3 (12.50%) DNS
6 3 (12.50%) FabricPath
7 2 (8.33%) Junos
7 2 (8.33%) MPLS
7 2 (8.33%) RSVP
7 2 (8.33%) VPLS
Database & Business Intelligence
1 2 (8.33%) SQL Server
2 1 (4.17%) Relational Database
General
1 6 (25.00%) Finance
2 1 (4.17%) Banking
Job Titles
1 8 (33.33%) Network Engineer
2 6 (25.00%) Analyst
3 5 (20.83%) Service Analyst
3 5 (20.83%) Service Desk Analyst
4 3 (12.50%) Cloud Engineer
4 3 (12.50%) Cloud Infrastructure Engineer
4 3 (12.50%) Engineering Manager
4 3 (12.50%) Infrastructure Engineer
4 3 (12.50%) IT Manager
4 3 (12.50%) IT Security Manager
4 3 (12.50%) Security Manager
4 3 (12.50%) Support Engineer
5 2 (8.33%) 2nd Line Engineer
5 2 (8.33%) 3rd Line Engineer
5 2 (8.33%) IT Engineer
5 2 (8.33%) IT Support Engineer
5 2 (8.33%) Junior
5 2 (8.33%) Junior IT Engineer
5 2 (8.33%) Junior Support Engineer
5 2 (8.33%) Juniper Engineer
Miscellaneous
1 4 (16.67%) Analytical Skills
1 4 (16.67%) Data Centre
2 3 (12.50%) Computer Science
3 2 (8.33%) Fintech
Operating Systems
1 11 (45.83%) Windows
1 11 (45.83%) Windows Server
2 8 (33.33%) Linux
3 5 (20.83%) CentOS
4 2 (8.33%) Windows Server 2003
4 2 (8.33%) Windows Server 2008
Processes & Methodologies
1 5 (20.83%) Security Management
2 4 (16.67%) Information Security
2 4 (16.67%) Network Design
3 3 (12.50%) Cybersecurity
3 3 (12.50%) Data Loss Prevention
3 3 (12.50%) Data Security
3 3 (12.50%) ITIL
3 3 (12.50%) Regulatory Compliance
3 3 (12.50%) Security Hardening
4 1 (4.17%) DevOps
4 1 (4.17%) Ethical Hacking
4 1 (4.17%) Kalman Filter
4 1 (4.17%) People Management
4 1 (4.17%) Remediation Plan
4 1 (4.17%) Security Architecture
4 1 (4.17%) Security Operations
4 1 (4.17%) Threat Intelligence
4 1 (4.17%) Vulnerability Management
Programming Languages
1 2 (8.33%) SQL
Qualifications
1 10 (41.67%) Cisco Certification
2 7 (29.17%) CCNP
3 6 (25.00%) CCNA
4 4 (16.67%) CISSP
5 3 (12.50%) Degree
6 2 (8.33%) JNCIP
6 2 (8.33%) JNCIS
6 2 (8.33%) MCP
7 1 (4.17%) CCDP
7 1 (4.17%) CCSA
7 1 (4.17%) CCSE
7 1 (4.17%) CEH
7 1 (4.17%) CISA
7 1 (4.17%) CISM
7 1 (4.17%) SANS
Quality Assurance & Compliance
1 3 (12.50%) COBIT
1 3 (12.50%) COSO
1 3 (12.50%) ISO/IEC 27001
1 3 (12.50%) ISO/IEC 27005
1 3 (12.50%) PCI DSS
System Software
1 11 (45.83%) Active Directory
2 5 (20.83%) XenApp
Systems Management
1 3 (12.50%) FortiGate
1 3 (12.50%) HAProxy
Vendors
1 21 (87.50%) Cisco
2 8 (33.33%) Citrix
2 8 (33.33%) Microsoft
3 7 (29.17%) Juniper
4 6 (25.00%) VMware
5 5 (20.83%) CheckPoint
5 5 (20.83%) SonicWALL
5 5 (20.83%) WatchGuard
6 4 (16.67%) HP
7 3 (12.50%) F5
7 3 (12.50%) Palo Alto
7 3 (12.50%) Riverbed
7 3 (12.50%) SolarWinds
8 2 (8.33%) Fortinet
9 1 (4.17%) Dell
9 1 (4.17%) Extreme Networks
9 1 (4.17%) Meraki
9 1 (4.17%) Oracle