Danny Dominguez
Portrait of Danny Dominguez

Danny Dominguez

Software Engineer II at Invoice CloudMcAllen, TX

Open to new roles.

Payments, apps, and the APIs between them.

I build payment systems that move a million transactions a month, and native apps with 30,000+ downloads.

Highlights

Invoice Cloud

Software Engineer II2022 – Present

1M+
transactions a month
3,000+
customer organizations
−50%
processing cost
+25%
throughput

Lotería Tradicional

iOS + Android30,000+ downloads

FreeTogether

iOSGroup scheduling

Rally Competitions

Founder2026

Let's talk

Experience

Invoice Cloud

– Present

Software Engineer II

– Present
  • Built a machine-learning fraud and abuse detection service that cut third-party vendor costs.
  • Delivered payment APIs, a ledger service, and onboarding for a payment-facilitator platform, cutting processing costs about 50% for participating customers.
  • Led migration of legacy services to modern .NET, raising transaction throughput 25%.
  • Developed and maintained ASP.NET Core REST APIs and WCF services for a multi-tenant payment platform processing more than 1 million transactions a month.
  • Built a reusable AI skill that takes work items from grooming to ready-for-testing.

Software Engineer I

–
  • Automated on-call diagnostics, cutting time-to-resolution for priority-one incidents 30%.
  • Improved Azure DevOps CI/CD pipelines, reducing failed deployments 45%.
  • Refactored legacy Visual Basic and C# applications for testability with NUnit, Moq, and Playwright.
  • Supported payment and batch systems serving 3,000+ customer organizations.

Drexel University

–

M.S., Software Engineering

Work

30,000+ downloads

Lotería Tradicional

Personal project2020 – Present

The app is the caller for Lotería, the traditional Mexican bingo game. I first built it in React Native, then rewrote it natively in SwiftUI and Kotlin, adding custom voice profiles you can record and share.

SwiftUI, Kotlin, Jetpack Compose, React Native

Lotería home screen with the El Gallo card and Jugar, Tabla, and Voces buttons

FreeTogether

Personal project2026

An iOS app for small groups to mark their availability and rank the best dates for trips, reunions, and shared plans.

SwiftUI, Firebase, Cloud Functions

FreeTogether group calendar showing each member's availability as colored dots

Rally Competitions

Founder2026

A platform for functional-fitness competitions: public event pages and organizer tools on the web, a mobile app for athletes and spectators, and one typed API behind both.

Next.js, Expo / React Native, FastAPI, PostgreSQL, Docker, GitLab CI/CD

dannydominguez.dev

Personal project2022 – Present

This site: a static Astro build with automated accessibility, visual, and performance checks, deployed on AWS Amplify.

Astro, AWS Amplify, Route 53, Playwright

Conversational Agent

M.S. capstone, Drexel2021 – 2022

A chatbot that lets students talk with historical role models, trained on first-person narratives from a custom web scraper.

React Native, Dialogflow, Firebase, Python

Role Model Chatbot sign-in and home screens

Skills

Backend & APIs
.NET 8, .NET Framework, ASP.NET Core, WCF, REST, SOAP
Payments
Datacap, Chase Orbital Gateway, J.P. Morgan Commerce Platform, Cybersource, Bluefin
Languages
C#, SQL, Python, JavaScript, Visual Basic
AI & automation
Claude, OpenAI Codex, Cursor, reusable AI skills, workflow automation
Cloud & delivery
Azure App Service, Functions, Key Vault, Azure DevOps, CI/CD, Git, GitHub
Databases
SQL Server, Oracle, MySQL
Testing
NUnit, Moq, Playwright

About

Danny Dominguez at the Hoover Dam

I'm based in McAllen, Texas. Coding is my job and also a hobby: I like finding software fixes for everyday problems.

Outside of work I travel, stay active, and spend time with family, friends, and my dog, Todd.

Let's talk.

I'm open to new roles, and happy to hear about freelance projects.

Download résumé