Flagstone Tech Stack

Cash management platform for UK savers, businesses, and wealth advisers

Financial Services London 201–500 employees Founded 2013 Privately Held

Flagstone operates a deposit aggregation platform serving UK individuals, businesses, charities, and international clients. The tech stack is Azure-native with heavy investment in Microsoft security tooling (Sentinel, Defender XDR, Purview) and cloud hardening—consistent with their stated pain around Azure security and identity/access hardening. Hiring is design and product-heavy (6 of 18 active roles) with senior-level dominance, suggesting a focus on UX refinement and adviser experience workflows rather than core infrastructure scaling.

Tech Stack 27 technologies

Core StackTerraform Figma Salesforce Power BI Python JavaScript React TypeScript InVision Jest Cypress Storybook React Native Azure Microsoft Sentinel Defender XDR Azure Defender for Cloud Bicep PowerShell Salesforce Marketing Cloud LexisNexis SQL Purview Microsoft 365 CSS React Testing Library Trustpilot

What Flagstone Is Building

◆Challenges

Improving conversion and self-serve efficiency
Improving cloud security in azure
Roi demonstration of research
Cloud hardening identity access networking
Managing office logistics
Office moves and refurbishments
Health & safety compliance
Strengthening detection and response processes
Meeting onboarding slas
Optimizing banking partner interactions

▲Active Projects

Website and platform user experience
Design system evolution
Azure-based security tooling improvement
Adviser experience improvement feedback loops
Cloud hardening initiatives
Slt breakfasts
Board activity
Companywide events
Office moves
Soc tools optimisation

Hiring Activity

Accelerating20 roles · 10 in 30d

Department

Design

Ops

Product

Security

Support

Data

Engineering

Seniority

Senior

Manager

Lead

Mid

Director

Junior

Company intelligence

Find more companies like Flagstone by tech stack, pain points and active projects

Get started free

About Flagstone

Flagstone provides a savings platform that allows UK depositors to distribute cash across multiple accounts, optimize interest rates, and maintain FSCS protection. The platform serves individuals, businesses, charities, and high-net-worth clients, with a separate international tier for corporates, funds, and trusts. Founded in 2013 and headquartered in London, the company operates in the £201–500 employee range and is privately held. Core users include financial advisers managing client deposits, SMEs, and wealth managers seeking consolidated cash visibility.

HeadquartersLondon

Company Size201–500 employees

Founded2013

Hiring MarketsUnited Kingdom

Frequently Asked Questions

What cloud platform does Flagstone use?

Flagstone runs on Microsoft Azure with Sentinel, Defender XDR, Azure Defender for Cloud, and Purview for security monitoring, identity governance, and compliance.

What countries does Flagstone operate in?

Flagstone serves UK individuals, businesses, and charities via flagstoneim.com, plus international depositors (corporates, funds, trusts) via flagstoneim.com/international; hiring is currently UK-only.