Director, Platform Architecture

POSITION SUMMARY

• The Director of Platform Architecture owns the technical design of the shared platform that Briefly's member firms — Rimon, Scale, Caravel and OGC — are consolidating onto. Day to day, the role defines the target-state architecture across identity, integration, security and shared services; sets the standards every application must meet before it goes live at a firm; and leads the technical side of each firm migration.
• The position sits within the Transformation Management Office, reports to the VP of Transformation, and works most closely with the Director of Platform Data Operations, the Director of Finance Integration, and IT leadership at each firm. The ideal candidate has built shared infrastructure serving multiple brands or operating companies, is equally comfortable in an architecture review and in a room of partners and can hold a technical standard without alienating the firms who have to live with it.

ESSENTIAL FUNCTIONS & RESPONSIBILITIES

• Design the multi-tenant Azure architecture — subscription model, management group hierarchy, tenant isolation boundaries, shared services layer and network topology — sized to serve the current firms and to onboard additional firms without rearchitecting.
• Define the Entra ID identity architecture, including tenant topology (single tenant, multi-tenant federation or B2B), single sign-on across all firms and applications, cross-tenant access policies, conditional access, MFA enforcement, and the separation between platform-level and firm-level identity administration.
• Design the data partitioning model — row-level security, database isolation, API-layer access controls and audit logging — so that attorney-client privilege boundaries are enforced at every layer of the stack.
• Design the matter-level data access control model, translating privilege boundaries into access control lists, data labels, API scopes and audit trails across Aderant, Clio, iManage and