Case studies

Production systems we've designed, built, or rescued.

We anonymize client identity by default — what's interesting is the system, the trade-offs, and what changed for the business. The technology is described as it actually shipped.

Payments / FinTech

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Ongoing — multi-year engagement

Enterprise NetSuite-Integrated Payments Platform

A unified payment processing platform — card-present, card-not-present, ACH, recurring, and tokenized — built around NetSuite as the system of record and operated as the production stack of a US-based payment processor.

  • Go
  • Temporal
  • Vue 3
  • Vue 2 / Vuetify
  • TypeScript
  • NetSuite SuiteApp
  • SuiteScript 2.x
  • FreedomPay FCC
  • +6 more

Selected outcomes

  • ▸ Replaced four legacy backend services and four disconnected UI surfaces with one platform
  • ▸ Designed Temporal-orchestrated workflows for card processing with end-to-end retry, void, and refund support
  • ▸ Shipped MFA across the system — TOTP, WebAuthn/FIDO2, hardware keys, biometric prompts

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Logistics / NetSuite Software

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Multi-year engagement

Multi-Carrier Shipping & Logistics Platform

A NetSuite-native shipping platform integrating FedEx, UPS, and other carriers into a single ratings, label-generation, and tracking workflow — used by businesses moving thousands of shipments per day.

  • TypeScript
  • NestJS
  • Angular
  • NetSuite SuiteScript 2.x
  • SuiteApp
  • AWS Lambda
  • AWS ECS
  • Docker
  • +4 more

Selected outcomes

  • ▸ Designed a carrier-agnostic abstraction so adding a new carrier is a contract change, not a rewrite
  • ▸ Shipped Angular admin app, NetSuite SuiteApp, and AWS server tier as a coordinated release pipeline with full CI
  • ▸ Diagnosed and worked around undocumented breaking changes in carrier APIs without disrupting customers

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Hospitality / Events

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12+ months

Multi-Tenant Event & Ticketing Platform

A multi-tenant event management platform with Stripe-backed payments, Apple Wallet and Google Wallet ticket passes, QR-code check-in, and operational analytics — supporting multiple organizations on a single deployed system.

  • Go
  • Gin
  • Vue 3
  • Pinia
  • TypeScript
  • PostgreSQL 14
  • Stripe
  • Apple Wallet (PKPass)
  • +7 more

Selected outcomes

  • ▸ Built multi-tenant architecture supporting multiple organizations on a single platform deployment
  • ▸ Shipped Apple Wallet (PKPass) and Google Wallet pass generation for digital tickets
  • ▸ Integrated Stripe end-to-end with webhook signature verification and idempotent payment handling

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Private Equity Operations

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Ongoing

Cloud-Native Multi-Entity Finance Management Application

A serverless, multi-entity financial management application — Vue 3 front-end, FastAPI on AWS Lambda, PostgreSQL — built for the operations side of a private investment portfolio.

  • Vue 3
  • TypeScript
  • Pinia
  • Vue Router
  • Python
  • FastAPI
  • AWS Lambda
  • PostgreSQL
  • +2 more

Selected outcomes

  • ▸ Designed multi-entity bookkeeping model that supports inter-company transactions and consolidated reporting
  • ▸ Built serverless backend on AWS Lambda for cost-proportional scaling across portfolio operations
  • ▸ Implemented role-based access control scoped per-entity for portfolio-company-level isolation

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Open Source Engineering

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Ongoing

Open-Source Go Library for FreedomPay Commerce Connect

A Go library covering the FreedomPay Freeway Commerce Connect (FCC) API — sale, auth, capture, refund, void, cancel, token management, and Level II/III commercial card processing — released as open source so the integration patterns survive any one engagement.

  • Go
  • Standard library only
  • FreedomPay FCC API
  • Bearer-token auth
  • Functional options pattern

Selected outcomes

  • ▸ Complete coverage of FCC transaction surface: sale, auth, capture, refund, void, cancel
  • ▸ Token management — create, update, refresh — with idiomatic Go ergonomics
  • ▸ Full Level II/III commercial card data support for B2B and corporate-card flows

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Open Source Engineering

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Ongoing

Open-Source Go Library for NetSuite RESTlets

A Go library for calling NetSuite RESTlets with OAuth 1.0 (HMAC-SHA256) authentication — the canonical Go entry point for external services that need to integrate with NetSuite as a system of record.

  • Go
  • Standard library only
  • OAuth 1.0
  • HMAC-SHA256
  • NetSuite RESTlet
  • Functional options pattern

Selected outcomes

  • ▸ Manual OAuth 1.0 with HMAC-SHA256 signature implementation specific to NetSuite's signing requirements
  • ▸ Standard response envelope ({success, payload, error, errorCode}) for consistent error handling
  • ▸ Type-safe with strong typing on Go structs and interfaces

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