💼 Full-Time Position

Senior Security Engineer

🏢
Flagstone
📍 london, england, United-Kingdom
📍
Location
london, United-Kingdom
📅
Posted
May 31, 2026
Type
Full-Time
🎯

Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

What is Flagstone?

Flagstone is an online savings platform reinventing how individuals, businesses, and charities manage, protect, and grow their cash. It’s a thriving, profitable business where smart people do their best work.

A feel for our culture:

We build a diverse, inclusive community with kindness, respect and growth. We value your voice, support development, and reward visible impact.

About the Team

Security Engineering is a team of five covering cloud security, detection, and security operations. They work directly in the Azure estate, run Microsoft Sentinel, Defender XDR, Defender for Cloud, and manage tooling via IaC. The team runs quarterly penetration tests and continuously builds detection & response capabilities.

Does this sound like you?

You are a Senior Security Engineer who operates across cloud security, detection tooling, and incident response. You own meaningful parts of the security stack and co...