Nathan Yearout
Full-Stack Software Engineer
About
Backend-focused full-stack engineer with hands-on experience designing and scaling transaction-critical APIs, integrating acquired platforms, and supporting international expansion in regulated fintech environments.
I care about payment reliability, clean system design, and building things that work under pressure. Currently at Payload.com, where I've helped grow the platform from a small team into a robust payments infrastructure.
Experience
Full-Stack Software Engineer
Aug 2023 — PresentPayload.com
Led the redesign and deployment of API v2.0, refactoring legacy endpoints into a modular architecture. Owned backend integration of acquired platform PlacePay, migrating customer and payment data, implementing webhook ingestion, and unifying multiple payment flows. Built core payment logic including card brand filtering, AVS validation, and custom pricing. Implemented Datadog monitoring, migrated CI/CD from Azure to AWS, and enabled international expansion via Twilio MFA and Canadian banking support. Helped scale the team from 3 to 8 engineers.
Projects
Siphra
Async-first Python SDK for double-entry bookkeeping with multi-currency support (fiat & crypto), immutable audit trails, and pluggable storage backends (PostgreSQL, SQLite, Redis).
HueCraft
Minecraft Forge mod that syncs Philips Hue smart lights to in-game brightness in real time, no screen capture needed. Supports day/night cycles and auto-connect on launch.
Okonomiyaki
An all-in-one web platform with tools for Japanese learners of all levels, from kana drills to vocabulary building and reading practice.
Movie Night Bot
Discord bot that lets server members request and search movies, then vote on the next movie night pick. Built during quarantine for weekly watch parties.
INVOICE
#INV-2026-0203
From
Nathan Yearout
Full-Stack Engineer
Date
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