The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for SDH skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited SDH over the 3 months to 23 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
23 Mar 2017
Same period 2016 Same period 2015
Synchronous Digital Hierarchy (SDH)
London / City of London
Rank 216 268 313
Rank change year-on-year +52 +45  
Permanent jobs citing SDH 3 2 2
As % of all permanent IT jobs advertised in the City of London 0.060% 0.028% 0.020%
As % of the Communications & Networking category 0.36% 0.19% 0.099%
Number of salaries quoted 3 2 2
Median salary £50,000 £45,625 £40,000
Median salary % change year-on-year +9.58% +14.06%  
UK excluding London median salary £35,500 £50,000 £38,750
% change year-on-year -29.00% +29.03%  

SDH 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 the City of London with a requirement for communications and computer networking skills.

Communications & Computer Network Skills
City of London
Permanent job vacancies with a requirement for communications and computer networking skills 835 1027 2011
As % of all permanent IT job vacancies advertised in the City of London 16.67% 14.61% 19.88%
Number of salaries quoted 788 901 1682
Median salary £47,500 £52,500 £55,000
Median salary % change year-on-year -9.52% -4.54%  
90% offered a salary of more than £26,000 £32,500 £34,000
10% offered a salary of more than £75,000 £70,000 £80,000
UK excluding London median salary £40,000 £42,500 £41,000
% change year-on-year -5.88% +3.65%  

SDH
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing SDH as a proportion of all permanent or contract IT jobs with a match in the Communications & Networking category.

Job vacancy trend for SDH in the City of London

SDH
Salary Trend in the City of London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing SDH in the City of London.

Salary trend for SDH in the City of London

SDH
Top 23 Related IT Skills in the City of London

For the 6 months to 23 March 2017, IT jobs citing SDH 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 City of London region with a requirement for SDH.

1 7 (100.00%) WAN
1 7 (100.00%) Ethernet
2 5 (71.43%) Disaster Recovery
2 5 (71.43%) Firewall
2 5 (71.43%) Finance
2 5 (71.43%) VMware
2 5 (71.43%) Degree
2 5 (71.43%) Computer Science
2 5 (71.43%) Hyper-V
2 5 (71.43%) MPLS
2 5 (71.43%) OpenStack
2 5 (71.43%) Low Latency
2 5 (71.43%) Presales
3 2 (28.57%) BGP
3 2 (28.57%) ITIL V3
3 2 (28.57%) SLA
3 2 (28.57%) CCNA
3 2 (28.57%) Cisco Certification
3 2 (28.57%) MS Office
3 2 (28.57%) ITIL
3 2 (28.57%) MS Excel
3 2 (28.57%) SharePoint
3 2 (28.57%) MS Visio

SDH
Top Related 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 5 (71.43%) OpenStack
2 2 (28.57%) SharePoint
Applications
1 2 (28.57%) MS Excel
1 2 (28.57%) MS Office
1 2 (28.57%) MS Visio
Communications & Networking
1 7 (100.00%) Ethernet
1 7 (100.00%) WAN
2 5 (71.43%) Firewall
2 5 (71.43%) MPLS
3 2 (28.57%) BGP
General
1 5 (71.43%) Finance
Job Titles
1 5 (71.43%) Consultant
1 5 (71.43%) Presales Consultant
1 5 (71.43%) Technical Consultant
1 5 (71.43%) Technical Presales Consultant
2 2 (28.57%) NOC Engineer
Miscellaneous
1 5 (71.43%) Computer Science
Processes & Methodologies
1 5 (71.43%) Disaster Recovery
1 5 (71.43%) Low Latency
1 5 (71.43%) Presales
2 2 (28.57%) ITIL
2 2 (28.57%) ITIL V3
Qualifications
1 5 (71.43%) Degree
2 2 (28.57%) CCNA
2 2 (28.57%) Cisco Certification
Quality Assurance & Compliance
1 2 (28.57%) SLA
System Software
1 5 (71.43%) Hyper-V
Vendors
1 5 (71.43%) VMware