How Synthetix Modernized Banking Infrastructure in 12 Weeks

Company Overview 

A leading U.S. banking technology provider, serving 75+ financial institution clients through its digital account origination platform. The platform handles regulated onboarding workflows subject to BSA/AML, CIP, OFAC, and Reg E/DD/CC requirements across its client base. 

The Challenge 

The provider needed to migrate its digital account origination platform from Kotlin/Spring Boot to Go, across 5 modules, 163 classes, and 23 REST endpoints, without breaking regulatory compliance or exposing PII embedded throughout the codebase. A manual migration approach carried unacceptable compliance and cost risk given the scale and regulatory exposure involved. 

Synthetix Solution 

A governed migration pipeline that combined automated codebase comprehension, compliance verification, and PII-aware translation into a single, auditable workflow. 

• Codebase Comprehension: Auto-analyzed 106 source modules, 163 classes, 463 cross-module dependencies, and 5,064 lines of code, with coupling scores generated for every module 

• Integration Topology: Mapped every external integration, including IDV, KYC/AML, ACH and card rails, and e-sign, capturing call patterns, authentication modes, retry posture, and data flow 

• Architecture Artifacts: Auto-produced five enterprise-grade documents in days, including Legacy HLD, Target HLD, Stakeholder BRD, Capability BRD, and Technical Design Document 

• Service Decomposition: Decomposed the Kotlin monolith into target Go services across two migration phases, with full API contracts, data models, and non-functional requirement targets 

• Compliance Critic Mode: Generated a regulatory traceability matrix confirming that every BSA/AML, CIP, OFAC, and Reg E/DD/CC compliance touchpoint was preserved in the Go target 

• PII-Aware Translation: Identified every PII surface, including SSN, date of birth, account numbers, and driver’s license data, and enforced encryption-at-rest, redacted structured logging, and tokenization throughout

“Synthetix delivered in 12 weeks what a traditional engagement would take 6+ months to scope. The compliance traceability output alone removed months of audit preparation from our migration plan.” — VP Engineering, leading U.S. banking technology provider 

The Results 

• 80% reduction in analysis effort, with 106 modules analyzed in hours instead of weeks 

• 12-week delivery for a full modernization proof of concept, against a 6+ month industry norm 

• 5 enterprise documents produced in days, eliminating months of manual documentation work 

• Zero compliance gaps, verified through an automated regulatory traceability matrix 

• Reduced migration risk, with PII-aware translation and compliance verification built directly into the pipeline rather than added afterward 

• Lower total engagement cost and faster time to value, driven by reduced team size and rework 

Capabilities demonstrated

AI Comprehension · Compliance-Aware · PII-Safe Translation · Multi-Language · Enterprise Documentation · Banking-Native