---
title: "AI-assisted modernization, Dylan Tullberg"
description: "Introducing AI-assisted analysis at Modus21 to turn legacy specifications and stakeholder knowledge into requirements for Java and Appian modernization."
url: "https://tull.ink/work/modus21-ai-modernization"
---

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AI · 2025

# AI-assisted modernization

Turning decades of system knowledge into a modern delivery plan.

Modus21 / KPMG  
Proxy Product Owner / Senior Associate

Modus21 / KPMG**Fragmented knowledge.  
Connected delivery.**

![Appian](https://tull.ink/work/appian-logo.png)

Connect the evidence. Review the meaning. Shape the work.

Conceptual analysis and delivery workflow.

## Overview

A large modernization program needed to reconstruct how a decades-old COBOL-based platform worked and define what its Java/Appian successor should do. The source code was not available. Understanding had to come from existing specifications, accumulated notes, and extensive discussions across business and technical teams.

## My contribution

As Proxy Product Owner and analyst at Modus21, subcontracting to KPMG, I introduced AI-assisted analysis within a restricted-access, multi-team SAFe environment.

-   Introduced AI-assisted analysis: turned available documentation and stakeholder knowledge into requirements, user stories, acceptance criteria, and pseudocode for review.
-   Reconstructed the requirements: connected current behavior, business rules, and dependencies with the needs of the future platform, without access to legacy source code.
-   Aligned delivery decisions: coordinated product, architecture, engineering, security, and partner teams around requirements and technical dependencies.

## Outcomes

Approximately 30× delivery throughput improvement within the modernization engagement.

## Technology & methods

AI/ML · SAFe · Appian · Java · COBOL

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