John Crygier
Sr. Director - Application Development Lead
Lake in the Hills, Illinois, United States
Summary
👤
Senior🎓
Top SchoolJohn Crygier is a seasoned software leader with 20+ years of hands-on development and 11 years in senior roles, currently serving as Sr. Director of Application Development at Gallagher where he led a major migration from SharePoint/SSRS to .NET Core, Angular and embedded PowerBI. He specializes in designing scalable enterprise architectures using open-source frameworks like Spring and .NET Core, and has a track record of introducing new technologies (React/React Native, Docker, SAML2, JWT/OAuth) and DevOps practices across organizations. Comfortable spanning full stack, infrastructure, and identity systems, he has built custom solutions for complex problems—everything from custom DSLs and rule engines to offline-first mobile platforms. A pragmatic architect who learns by reading code and shipping proofs-of-concept, he combines deep technical craftsmanship with product-minded leadership and process governance.
11 years of coding experience
16 years of employment as a software developer
BS, Computer Engineering, BS, Computer Engineering at Purdue UniversityMS, Information Systems, MS, Information Systems at Roosevelt University
Github Skills (30)
monitoring9
apm9
distributed-tracing9
agent9
graphql-java9
jpa8
scale8
large-scale8
java8
distributed-systems7
graphql7
microservices6
cloud-native6
nodemcu5
simulator5
Programming languages (2)
Github contributions (5)
jcrygier/graphql-jpa
Sep 2015 - Jun 2018
JPA Implementation of GraphQL (builds on graphql-java)
Contributions:42 commits, 24 PRs, 36 pushes in 2 years 9 months
buildsgraphql-javagraphqljpajava
jcrygier/NodeMCUSimulator
Feb 2016 - Aug 2016
Contributions:10 commits, 1 PR, 6 pushes in 6 months
simulationsimulatorhardwarejavanodemcu
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