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Senior Cybersecurity SIEM Engineer/Security Architect – W2 Only
Posted 7 days ago by Information Resource Group, Inc.
Role: Senior Cybersecurity SIEM Engineer/Security Architect – W2 OnlyDuration of the Contract: 12 months with possibilit...
- Rate Not specified
- Category Outside
- Work type Remote
- Location Remote
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Looking for Network Security Architect - Consultant - SIEM Engineer_ Independent...
Posted 1 week ago by Vrddhi Solutions LLC
Network Security Architect - Consultant - SIEM EngineerInterview Process: 1-2 rounds, Virtual/OnlineDuration of the Cont...
- Rate Not specified
- Category Outside
- Work type Remote
- Location Remote
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Sign UpSIEM Contract Rates in Cardiff: Day Rate Quartiles and Demand
Live market telemetry, compensation quartiles, and IR35 compliance benchmarks across the UK contract sector.
Median Daily Rate
£630/day
-10.0%
Interquartile Range
£450/day – £810/day
Middle 50% market distribution
Contract Engagement Split
44% Outside IR35
8% Inside IR35 engagements
Market Conditions and Compensation Trajectory
Procurement of independent SIEM specialists within the wider Cardiff district remains closely linked to strategic regional development programmes, enabling local project teams to achieve critical release milestones. Remuneration benchmarks across active Cardiff engagements reflect an established median day rate of £630/day, delivering a -10.0% differential against broader national averages. Interquartile rate analytics define a localised range from £450/day to £810/day. 44% of active postings are structured outside IR35 legislation. Figures summarise advertised pay on this hub to November 2026 and are market statistics, not a personal offer or guaranteed assignment rate.
Daily Rate Quartiles and Market Benchmarks
Values combine advertised day rates, stated IR35 outcomes, and sector labels from vacancies matching this hub. Quartiles use priced roles only.
| Metric | Value | What it shows |
|---|---|---|
| Median day rate | £630/day | Mid-market advertised pay for this hub |
| 25th percentile (P25) | £450/day | Lower-quartile priced vacancies |
| 75th percentile (P75) | £810/day | Upper-quartile priced vacancies |
| Outside IR35 share | 44% | Stated limited-company / outside SDS |
| Inside IR35 share | 8% | Stated PAYE / umbrella / inside SDS |
| Undetermined IR35 | 48% | Adverts that omit a published status |
| Leading sector | Cybersecurity (83%) | Largest hiring cluster in the sample |
| Priced sample | 4 roles | Vacancies used for the rate corridor |
| Regional rate band | a regional rate discount versus London | Location pricing context, not an SDS |
Statutory Standards and Frequently Asked Questions
Cardiff does not create a special IR35 code for SIEM work. The client SDS should name the Cardiff workplace and delivery model. An inside finding on a Cardiff SIEM brief typically deducts tax at source, while outside IR35 SIEM work in Cardiff is billed by a PSC. Local pay sits on a regional rate discount versus London, so a higher Cardiff headline rate can still be inside. Commuting into Cardiff does not, by itself, prove substitution or lack of control. Read the SIEM Cardiff contract for workplace, hours, and equipment clauses.
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