Parity Team

Global enterprises remain tethered to mission-critical Java monoliths built decades ago. Over 70% of modern rewrites fail because complex business logic, regulatory compliance rules, and financial rounding edge-cases are buried across millions of lines of code. Parity Engine solves this with a Tri-Model Autonomous Migration System that transforms legacy monoliths into modern Angular 17 Micro-Frontends—and mathematically proves 100% functional, state, and financial math parity before production. Key Innovations: 1. Closed-Loop Deterministic Pipeline (Capture ➔ Specify ➔ Migrate ➔ Prove): • Trace Extraction: Meta AI's Muse Spark model analyzes legacy execution traces and extracts formal, machine-verifiable BehaviorSpec contracts (JSON Schema). • Code Synthesis: Specialized models synthesize modern Angular 17.3 MFEs with AG Grid and reactive state. • Self-Healing Verification: Headless Playwright re-runs recorded golden traces against the synthesized MFE, using an autonomous self-healing agent to diagnose and resolve regressions. 2. Zero-Disruption Coexistence & Zero-Trust Governance: • Runs modern Angular 17 within the legacy Tomcat monolith via Webpack Module Federation without touching core legacy code. • Auth Bridge dynamically translates legacy JSESSIONID cookies into cryptographically signed HMAC-SHA256 Bearer tokens. • Strictly enforces enterprise 4-Eyes Maker/Checker governance and Segregation of Duties (SoD) with automated rejection proofs (HTTP 400). 3. 100% Mathematical Proof: • Verified across 6 complex enterprise supply chain finance scenarios (multi-currency, facility overdraw caps, 85% advance limits, dual-checker workflows). • Exactly 699 out of 699 deterministic checks passed (100.0%) with 0 discrepancies, verifying exact cent-level BigDecimal Banker's Rounding matching.