Engineering Case Studies
Explore detailed architectural analyses of systems we have developed and deployed. We solve core structural bottlenecks, optimize network speeds, and build codebases that scale.
Modernizing a Mission-Critical Sales Quoting Engine
Client: GENERAC
The Challenge
An aging, end-of-life Ruby backend and deprecated Angular frontend triggered a failed security audit. Outdated Ubuntu servers and MySQL databases caused environmental instability and threatened revenue-halting downtime for over 500 field reps.
Engineering Solution
Systematically refactored the legacy Ruby on Rails backend and stripped deprecated libraries from the Angular architecture. Upgraded the underlying server and database environments, and architected a modern automated CI/CD pipeline using GitHub Actions.
Measurable Outcome
Rescued the application from security vulnerabilities and reduced system downtime to zero. The new CI/CD pipeline transformed the development lifecycle, allowing for automated, secure remote deployments to support thousands of daily revenue-driving quotes.
Key Achievements
Technologies Deployed
System Topology & Integration Flow
High-Volume Ticketing Middleware & Systems Integration
Client: WCI (World Choice Investments)
The Challenge
Legacy infrastructure suffered from brittle point-to-point connections, resulting in dropped transactions under peak ticketing traffic. Critical business systems (ProVenue ticketing, HubSpot CRM, and Elavon payments) were deeply siloed and lacked unified orchestration.
Engineering Solution
Developed a custom, high-performance middleware application serving as a central transaction proxy. This decoupled the Next.js frontend from legacy systems, enforced strict traffic shaping and timeout logic, orchestrated Elavon 3DS2 payments, and synced real-time data to HubSpot.
Measurable Outcome
Achieved a highly available architecture capable of handling massive peak on-sale traffic without dropping connections, providing total visibility into the customer journey from marketing click to final secure ticket purchase.
Key Achievements
Technologies Deployed
System Topology & Integration Flow
Real-Time Crypto-to-Fiat Payment Orchestration
Client: CryptoWaveLabs
The Challenge: Defeating Credit Card Network Latency
The primary engineering challenge for CryptoWaveLabs was architectural: bridging the gap between decentralized digital assets and traditional card networks in real time. Standard point-of-sale (POS) terminal transactions require authorization within a tight window (frequently under 2 to 3 seconds). Traditional methods of liquidating crypto—initiating an exchange order, waiting for block confirmations, and moving fiat across traditional rails—are far too slow to happen during a card swipe. Without a specialized high-speed middleware layer, POS terminals would consistently time out, resulting in declined transactions and a broken user experience.
The Core Technical Innovation: The Liquidity Cushion Strategy
To bypass the multi-second delay of live on-chain or exchange liquidation during the authorization window, we engineered an Algorithmic Liquidity Cushion. By decoupling the merchant authorization from the actual crypto liquidation event via a managed fiat cash pool, CryptoWaveLabs achieved sub-second authorization times indistinguishable from a standard bank card.
The Architecture & Integration Ecosystem
1. High-Performance Core Middleware
The entire platform is anchored by a high-throughput backend written in .NET Core APIs backed by SQL Server. This layer handles webhooks, authorization routing, balance checks, and instant ledger updates.
2. Issuing & Banking Rails
The fiat payment delivery system is split: BlueBanc acts as the BIN Sponsor & Card Issuer intercepting the ISO 8583 card swipe requests. Stripe manages fiat onboarding and compliance verification.
3. Crypto Infrastructure & Liquidity
The cryptocurrency translation mechanics are handled programmatically through a deep integration with Vault (vault.ist), giving the application real-time execution access to deep crypto liquidity pools.
The Real-Time Authorization Loop
- The Swipe: A user swipes their card at a merchant terminal. BlueBanc triggers a real-time authorization request to the .NET Core middleware.
- The Verification: The middleware instantly queries the user's digital wallets via the Vault API to check their cryptocurrency balance.
- The Buffer Calculation: The system runs a rapid algorithmic evaluation. It verifies if the user has enough crypto to cover the transaction amount plus a safety margin percentage.
- The Cash Pool Advance: If the user passes the check, the middleware instantly approves the transaction by drawing fiat directly from a pre-funded fiat cash pool. The card terminal authorizes seamlessly within milliseconds.
Immediate Post-Authorization Settlement
The moment the fiat transaction is approved, an asynchronous system is triggered to restore balance to the cash pool:
- Smart Contract Execution: Executes automated smart contracts via Vault to sell the user's cryptocurrency matching the exact fiat debit.
- Auto-Liquidation & Routing: Auto-liquidates assets according to algorithmic preferences and active market rates. Proceeds are routed back to the core fiat cash pool.
- Profit & Fee Extraction: Strips out processing fees and arbitrage profits, routing them to a corporate account, keeping the cash pool unencumbered.
Native Mobile Experience
To match this complex backend orchestration, we built Native iOS and Android applications designed to minimize user friction.
- Algorithmic Preferences: Users set asset prioritization hierarchies (e.g., spend BTC first, then stablecoins). The system evaluates these rules programmatically at the time of the swipe.
- Instant Transparency: Using low-latency push notification architectures, users receive a breakdown showing the exact amount of crypto liquidated, the exchange rate, and remaining balances.
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