DariuszĀ Kuc
Principal Software Engineer at Apollo GraphQL
Chicago, Illinois, United States
Summary
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Top SchoolDariusz Kuc is a Principal Software Engineer based in Chicago with seven years of focused experience building production-grade GraphQL systems and backend services. He has held senior engineering and principal roles at Expedia Group and currently at Apollo GraphQL, bringing deep practical expertise in GraphQL schema generation, directives, and data fetching patterns. An active open-source contributor, Dariusz contributed example applications and key features to the widely used ExpediaGroup/graphql-kotlin project, including optional input support and directive handling that help bridge library internals to real-world use. He combines hands-on Kotlin and backend engineering with governance experience from serving as an Expedia representative on the GraphQL Foundation Governing Board, demonstrating both technical depth and ecosystem stewardship.
7 years of coding experience
14 years of employment as a software developer
Bachelor of Science Computer Science, Bachelor of Science Computer Science at Illinois Institute of TechnologyMasterās Degree Computer Science, Masterās Degree Computer Science at University of Illinois Urbana-Champaign
Github Skills (10)
kotlin10
graphql10
wordpress-graphql10
wpgraphql10
schema9
apidoc9
spring-boot9
api9
schema-design9
schema-org9
Programming languages (15)
Github contributions (5)
ExpediaGroup/graphql-kotlin
Sep 2018 - Jan 2023
Libraries for running GraphQL in Kotlin
Role in this project:
Back-end Developer
Back-end DeveloperContributions:25 releases, 503 reviews, 318 commits in 4 years 4 months
Contributions summary:Dariusz primarily contributed to the development of a sample application for the GraphQL Kotlin library. Their work focused on implementing example queries and mutations, fixing data fetcher selection logic, and adding support for directives within the application. The user's contributions included code related to example application logic, which is written in Kotlin and demonstrates the core features of the GraphQL Kotlin library. The user also worked on a schema generation library and, implemented the support for optional input fields.
graphql-clientgraphql-javaoss-portal-featuredgraphql-serverfederation
dariuszkuc/router
Oct 2022 - Mar 2025
A configurable, high-performance routing runtime for Apollo Federation š
Contributions:2 PRs, 103 pushes, 110 branches in 2 years 4 months
reactconfigurableruntimeapollo-federationrouting
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