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01Selected work

Real products, shipped to production.

Every build below ran in production. Client names are kept private; the engineering speaks for itself.

Card Settlement Pipeline

Daily settlement files generated in the processor's own format, PGP-encrypted on the way out and decrypted on the way back, with reversals and same-day ACH handled on the same path.

  • Processor-format batch files, generated and reconciled daily
  • PGP encryption both directions, separate test and production keys
  • Reversals and same-day ACH on the same pipeline
Sector
Fintech · Card payments & settlement
Scope
Settlement files, encryption, reversals
Stack
PHP, PGP, SFTP
Status
Delivered
  • PHP
  • PGP
  • SFTP
  • Payments
  • MySQL
2-way PGP
out and back, in the processor's own batch format

Per-State Lease Pricing

Consumer lease terms are set by state law, and the platform had been treating them as near enough. Replaced with a calculator per state, so each one computes its own payment schedule, final payment and payoff quote.

  • One calculator per state, replacing shared approximations
  • Payment schedules, final-payment options and payoff quotes
  • Statutory wording corrected per state on the lease itself
Sector
Fintech · Regulated pricing
Scope
Pricing engine, lease documents
Stack
PHP, Zend Framework, Doctrine
Status
Delivered
  • PHP
  • Zend Framework
  • Doctrine ORM
  • MySQL
Per state
computing its own schedule, final payment and payoff

Personal Shopper Service

Customers kept asking for items the catalog did not carry. Built the concierge flow that takes the request, sources the item, prices it and turns it into an ordinary order, so the catalog stopped being the limit of what could be bought.

  • Request intake and sourcing workflow
  • Manual pricing folded into the standard order path
  • Built across the storefront and the back office
Sector
Consumer finance · Concierge retail
Scope
Concierge ordering, sourcing, pricing
Stack
PHP, Zend Framework, MySQL
Status
Delivered
  • PHP
  • Zend Framework
  • MySQL
Off-catalog
ordering, once the catalog stopped being the limit

Financial Data Automation

An investor was maintaining a stock-fundamentals model by hand. Wired a market-data API straight into the sheet, so balance sheet, income statement and cash flow arrive per ticker and the return metrics compute themselves rather than being typed in.

  • Balance sheet, income statement and cash flow pulled per ticker
  • Return on invested capital computed from NOPAT and invested capital
  • Gaps in the vendor's data found and sourced from another statement
Sector
Investment research · Market data
Scope
Market data integration, metric computation
Stack
Google Apps Script, REST APIs
Status
Ongoing
  • Google Apps Script
  • REST APIs
  • JavaScript
  • Financial data
3 statements
arriving per ticker, with the return metrics computed from them

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