AI Operating Systems by Mart Roosimägi

June 2026

AI Cost Is an Operating Discipline

Disclaimers upfront: I’ve relied heavily on Codex when writing this and I’ll continue doing so throughout the writing.

Jun 28 • Mart Roosimägi

How an AI-Native Bank Gets Built

I’ve restarted writing here in Substack.

Jun 14 • Mart Roosimägi

The New Job Is Designing the System

I’ve restarted writing here in Substack.

Jun 7 • Mart Roosimägi

May 2026

March 2024

Data Product in FP&A

Data Governance as the Foundation for Data-Driven Decision Making

Mar 24, 2024 • Mart Roosimägi

Generative AI Adoption Strategy in FP&A

Merging the concepts from The Friction Project, The Crux and Ethan Mollick

Mar 3, 2024 • Mart Roosimägi

December 2023

FBP - Series 2, Post 3: Being Directionally Correct

II. Collaborative Planning as a Catalyst for Growth, Post 3: Being Directionally Correct

Dec 15, 2023 • Mart Roosimägi

FBP - Series 2, Post 2: Sustainable Growth through Collaborative Financial Planning

II. Collaborative Planning as a Catalyst for Growth, Post 2. Sustainable Growth through Collaborative Financial Planning

Dec 1, 2023 • Mart Roosimägi

November 2023

FBP - Series 2, Post 1: Stakeholder Engagement in Vision and Strategy Alignment

II. Collaborative Planning as a Catalyst for Growth, Post 1: Stakeholder Engagement in Vision and Strategy Alignment

Nov 17, 2023 • Mart Roosimägi

1

FBP - Series 1, Post 3: Strategic Implications of Finance Business Partnering

I. Strategic Alignment through Finance Business Partnering, Post 3: Strategic Implications of Finance Business Partnering

Nov 3, 2023 • Mart Roosimägi