Josh Mattila
Staff Software Engineer at Gusto
Denver, Colorado, United States
Summary
👤
Senior🎓
Top SchoolJosh Mattila is a Staff Software Engineer based in Denver with 10 years of experience building reliable, high-impact systems across government, healthcare, and fintech. He combines hands-on engineering in typed and functional languages (Java, Kotlin, TypeScript, Elm, Elixir) with proven leadership—running teams, conducting weekly code reviews, and mentoring junior engineers to rapid delivery. His work has repeatedly translated into measurable outcomes: onboarding a major bank to drive $1M in quarterly revenue, saving government programs $2M per week, and unlocking $1.2M in sales by stabilizing a real-time imaging pipeline. At Guild Education he scaled payments workflows and cut support tickets by 45% while guiding teams to SOC-1 and WCAG compliance. Comfortable across the stack from high-throughput data streams to frontend GraphQL/React interfaces, he also has roots in embedded/memory-managed systems and automation tooling. Colleagues describe him as a pragmatic problem-solver who leverages both technical depth and process improvements to turn prototypes into revenue-generating products.
10 years of coding experience
15 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at University of MinnesotaTransfer Computer Science, Transfer Computer Science at Anoka-Ramsey Community College
Github Skills (35)
pivotal10
tiles9
java9
spring9
pkce9
kiln9
spring-boot9
cloud-foundry8
foundry7
single-page7
vmware7
auth0-js7
cf-cli6
cli6
discovery6
Programming languages (7)
Github contributions (5)
spinfooser/xfinity-forever
Jan 2019 - Mar 2020
Contributions:19 commits, 2 pushes, 1 branch in 1 year 1 month
GuildEducationInc/activerecord_pg_extensions
Dec 2020 - May 2021
A collection of extensions for the ActiveRecord PostgreSQL adapter
Contributions:1 release, 1 review, 3 PRs in 5 months
railsrubyadapterextensionspostgresql
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