San Antonio, TX

Brandon Harding

Senior Full Stack Software Engineer

I design, ship, and operate production SaaS — from data models and APIs to AWS infrastructure and the products customers use every day.

TypeScript · Python · Node.js · AWS · PostgreSQL · React

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Featured work

Toddly

Multi-tenant platform used by 400+ schools — enrollment, waitlists, Stripe Connect payments, and parent communications in one product.

Toddly school dashboard for enrollment, operations, and finance — School dashboard — leads, operations, and finance

Toddly tour availability calendar — Inquiries and tours — weekly availability

Parent app

Toddly parent app billing screen — Billing — invoices, receipts, and payment methods

Toddly connects parents with local childcare centers and gives schools a single system for enrollment, waitlists, billing, and family communications. I designed the application architecture and relational data model, then built the Python backend, REST APIs, and AWS infrastructure that power the web and mobile apps. Parents search a live map, compare programs, and enroll online. Schools replace spreadsheets and manual follow-up with automated workflows. Payments run through Stripe Connect so marketplace-style payouts stay with each school.

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Tech stack

Python
Flask
SQLAlchemy
MySQL
Redis
React
React Native
Expo
Stripe Connect
AWS

Architecture

Frontend

React
React Native
Expo

API

Flask
REST
SQLAlchemy

Data

MySQL / RDS
Redis
S3
Stripe Connect

AWS

Elastic Beanstalk
EC2
Lambda
CloudWatch

Parents and schools use React and React Native (Expo) clients. Flask APIs persist to MySQL, cache in Redis, store files in S3, and settle payments through Stripe. AWS runs the fleet.

AI / LLM

Billing Agent

Natural-language billing analysis

I built an LLM-powered billing agent so school staff can ask questions about invoices, balances, and payment history in plain language. The agent uses application tools to retrieve live billing data, then summarizes aging, outstanding balances, and recent activity. It sits on top of the existing ledger rather than replacing it — retrieve, analyze, and explain, with the database remaining the source of truth.

Python
LLMs
Tool calling
Flask
MySQL
Stripe

How the agent works

Toddly Billing Assistant answering a revenue question beside the billing dashboard — Billing Assistant — monthly revenue, then why January was higher

Storybook Studio and other client work live on the case studies page.

All case studies

Experience

A short professional timeline

Five-plus years building and operating SaaS, APIs, and cloud platforms — plus earlier data science and ML work.

2024 – Present
Aver
Senior Software Engineer
Design and develop production software across backend services, APIs, databases, and AWS. Build REST APIs for customer-facing applications and improve reliability through monitoring, performance work, and engineering best practices.
2023 – Present
Surmount / Toddly
Founder & Senior Software Engineer
Built and launched a multi-tenant childcare SaaS and client software. Owned the full lifecycle — requirements, system design, implementation, AWS deployment, production monitoring, and ongoing product development.
2018 – 2024
Versar / CarbonFree / Vintage Air
Data Science & Machine Learning Engineering
Developed Python data pipelines, AWS workflows, and machine learning / NLP systems supporting enterprise applications.

Lehigh University — M.S. Management & Data Science

Lehigh University — B.S. Chemical Engineering

AWS Certified Machine Learning – Specialty

Professional Engineer (PE), Texas

Contact

Let’s talk

Hiring managers and founders — the fastest path is email or LinkedIn.