Sean Johnson

Advanced knowledge of Business Software and Computer Science

Software Engineer with 16 years building full-stack products from startup to enterprise — specializing in Go and TypeScript with a focus on scalable architecture, intuitive UX, and developer leadership. Approaches systems design with a focus on simplicity, maintainability, and reliability. Holds a Master’s Degree in Computer Science from Arizona State University, and actively maintains LiaraDB, an open source event-native database.

July 2026 to Present

• Technical Lead for 4 teams of engineers building a Member Management System
• Established standards and implemented mission critical systems
• Developed Event Driven microservices in Go with Domain Driven Design
• Integrated AI workflows to improve team velocity while advocating for high quality work

August 2022 to June 2026

• Led a team of 5 engineers building an application providing Legal Services to members
• Spearheaded a new application for Identity Theft Protection
• Iterated with Product and Design teams on data-driven experiments for Customer Success
• Mentored engineers, regularly presenting topics to improve developer skills
• Advocated for Software Architecture quality using Domain Driven Design and TDD

January 2022 to July 2022

• Created a web application for Note Taking on a multi-user digital whiteboard
• Mentored team members in React and TypeScript, and established engineering standards
• Optimized React render cycles and Firebase references to improve performance

April 2021 to December 2021

• Developed Urgent Care appointment software, servicing millions of active users
• Advocated for product quality and stability, converting legacy projects to TypeScript
• Enhanced Urgent Care storefront pages improving pricing transparency

April 2020 to April 2021

• Spearheaded a new web application for Election Management Systems
• Designed and implemented consistent UX patterns for a Voter Registration system
• Introduced a new CI/CD Pipeline to deploy a massive fleet of microservices

May 2016 to March 2020

• Directed client-side architecture for a Medical Inventory Management application
• Developed features including a Shopping Cart, Hardware Manager, Inventory Setup
• Designed UI/UX patterns, and created custom UI toolkit

August 2012 to April 2016

• Created full stack web applications for Online Education
• Developed tools for Course Management, and a Media Player for the Virtual Classroom.
• Optimized Course Upload tools, significantly improving performance

December 2011 to August 2012

July 2010 to April 2011

• MS in Computer Science from Arizona State University in 2011
  • Master's thesis on 3D surface generation
  • Operating Systems, Architecture, Database, 3D Graphics, and Combinatorial Algorithms
• BA in Mathematics from Arizona State University in 2008

• LiaraDB - an open source event-native database written in Go.
  • Simplifies Enterprise Applications by supporting common patterns out of the box.
  • Supports Event Sourcing, Event Outboxes, Key-Value storage, and ACID transactions.
  • Implemented Buffer Manager, Concurrency Manager, and B+Tree Indexes.
  • Optimized using Go’s concurrency primitives to improve data throughput.
  • Instrumented with OpenTelemetry for advanced system metrics
• Jitter - application providing Event Management and Ticket Sales to event organizers
  • Highly performant services in Go and TypeScript, instrumented with NewRelic
  • Web and Mobile applications with React, Next.js, and Flutter
  • Custom OAuth and OpenID Connect Provider with Google and Apple support
  • Integrations with Stripe for payments and SendGrid for transactional emails
• Headwater - Dependency Injection and Mediator pattern library in TypeScript
• Content Management System - Created for ASU / NASA Space Grant

• Encapsulation - Hiding complexity in TypeScript applications
• React testing - Separating business and view logic to improve testability