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Legacy Modernization

Legacy ESB to MuleSoft Migration

Modernized a critical legacy integration layer from Informatica ESB to Anypoint Platform, reducing cycle times by 3 weeks and saving $250K annually.

Annual Savings
$250K+
Dev Cycle
-3 Weeks
Integrations
150+
Downtime
Zero

Context & Problem

The enterprise's legacy Informatica ESB had devolved into a rigid, monolithic bottleneck. With exorbitant licensing costs and an aging bare-metal footprint, simple changes required weeks of risky, manual testing.

The Risk

Product releases were delayed by months because the core integration layer reached end-of-life status, creating a massive single point of failure for the entire business.

Strategic Approach

40% Faster Development
Built custom Python automation to parse Informatica XML and generate DataWeave 2.0 transformations.
Real-Time Agility
Replaced sluggish overnight batches with Solace PubSub+ event-driven architecture.
Zero Business Interruption
Implemented a 'Strangler Fig' pattern with intelligent routing proxies for seamless migration.
Guaranteed Data Integrity
Deployed an automated MUnit regression suite in CI/CD to handle 100% of legacy edge cases.
Infrastructure Deflection
Decommissioned 3 racks of bare-metal servers by migrating to target-state cloud runtimes.

Modernized Architecture

Legacy ESB to MuleSoft Migration

Reference: Migration path from batch-oriented monolith (Legacy) to event-driven API architecture (MuleSoft).

Executive Retrospective

"If I could redo this, I'd push for a 'big bang' cutover on the simplest 20% of sync services. We over-engineered the 'dual-run' for basic data-syncs that had zero rollback risk, which could have saved us an additional 200+ engineering hours."

What I Personally Owned

  • End-to-End Migration Strategy
  • Dual-Run Architecture Design
  • Automated Tooling Development
  • Executive Stakeholder Alignment
  • Infrastructure Decommissioning Plan

Technologies

MuleSoft AnypointInformatica (Legacy)Solace PubSub+PythonGitLab CI/CDMainframeSAP

Case Study One-Pager

Download the executive summary (NDA Safe PDF).