Cybersecurity engineer · London, United Kingdom
Security engineer salary in London — typical band and what it buys
Senior security engineer covering application security, infrastructure security, or detection / response.
Estimated band
Security engineer gross salary in London
Local-currency band derived from a $140,000 NYC P50 anchor × 0.70 city multiplier × 0.7870 GBP/USD.
What £110,185 gross buys you in London
Net after United Kingdom's effective payroll deduction, mapped to Mundevo's lifestyle tiers.
Required monthly net at each tier in London
Where the P50 salary lands across Mundevo's four lifestyle tiers.
| Tier | Required net / month | Your P50 net covers it? |
|---|---|---|
| PremiumBest fit | £5,964 | Yes |
| Comfortable | £4,786 | Yes |
| Balanced | £3,944 | Yes |
| Frugal | £3,103 | Yes |
Who this band describes
Senior security engineers in this band have 5-8 years of experience in offensive (red-team / pentesting), defensive (SOC / detection / response), or product-security (appsec / cloud security) tracks. Specialization matters: cloud-security and appsec command premiums at SaaS companies; detection / response runs higher at financial services.
Pay sits modestly above general-purpose senior SWE bands due to specialization scarcity. Highest at fintech, defense-adjacent tech, and large public tech companies; mid-band at enterprise SaaS and cybersecurity consultancies.
Common employer types at this band: Fintech, Big tech, Cybersecurity vendors, Defense contractors, Enterprise SaaS.
Cross-check before negotiation
Mundevo's band is derived, not surveyed. For an offer conversation, anchor on at least one of these.
- Levels.fyi — security roles at public tech companies
- ISC2 / SANS annual cybersecurity workforce surveys
- Glassdoor — broader cybersecurity coverage