John Yanarella
Senior Systems Software Engineer at NVIDIA
Richmond, Kentucky, United States
Summary
👤
Senior🎓
Top SchoolJohn Yanarella is a Senior Systems Software Engineer and architect with over 16 years of professional experience building web and mobile applications for clients ranging from NASDAQ and JPMorgan Chase to Complete Genomics and SiriusXM. He blends front-end craftsmanship (React, Vue, Tailwind, d3/Vega) with systems-level expertise (Node.js, C/C++, Swift) to produce reusable design systems, SDKs, and developer tooling that simplify complex problems. At NVIDIA and prior companies he has led teams to deliver accessible, themable UI component libraries, state-machine-driven architectures, and data-visualization platforms for high-stakes domains like genomics and clinical decision support. An active contributor to the XState ecosystem, he improved promise/thenable handling and fixed subtle transient-transition bugs in @xstate/react, reflecting a knack for fixing deep runtime issues. He favors pragmatic, composable solutions—often implementing “CSS via props,” integrated editor-driven docs, and CLI generators—to make sophisticated interfaces easier to build and maintain. Based in Richmond, Kentucky, he pairs a systems mindset with a designer’s attention to UX and accessibility.
16 years of coding experience
26 years of employment as a software developer
BS, Computer Science, BS, Computer Science at Miami University
Stackoverflow
36reputation
496reached
1answer
0questions
Github Skills (16)
finite-automata10
state-management10
statechart10
typescript10
javascript10
typescripts10
state-machine10
typescript-types10
es6-promise10
finite-state-automata10
testing10
react9
orchestration9
orchestra9
extjs6
Programming languages (8)
Github contributions (5)
statelyai/xstate
Apr 2019 - Oct 2019
Actor-based state management & orchestration for complex app logic.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:5 commits, 4 PRs, 69 comments in 6 months
Contributions summary:John primarily focused on improving the state management library's interpreter, specifically enhancing its support for promises and thenables. They refactored code to correctly handle `PromiseLike` objects, adding a type guard and modifying service invocations. The user also implemented thorough testing, creating test suites to validate the functionality of promises and thenables within the library. Furthermore, they addressed a specific bug in the `@xstate/react` package, ensuring correct behavior with immediate mode and transient transitions.
workflowstatechartsstate-machineorchestrationmachines
jasongardnerlv/radium-filters
Mar 2016 - Oct 2017
Contributions:18 releases, 75 commits, 56 PRs in 1 year 7 months
faceted-searchfilterselementsheaderpanel
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.