Roy Crihfield - Owner at Manteia Ltd.

Roy Crihfield

Owner at Manteia Ltd.

United States

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Summary

🤩

Rockstar

🎓

Top School

Roy Crihfield is an independent software consultant and owner with 13 years of experience building back-end web applications and infrastructure, helping companies move from real-time market and sensor data to reliable production services. He has strong hands-on expertise in backend systems, deployments, ETL, and operational tooling from roles at Outreach.io and ZenFire, and now applies that to freelance projects through Manteia Ltd. Roy contributes to notable open-source blockchain work—implementing a versioned, ACID-capable in-memory DB backend for the Cosmos SDK—demonstrating deep systems and database design skills beyond typical web backend work. His background in computer science and earlier applied research on distributed sensor data gives him a practical blend of engineering rigor and data-driven problem solving.

13 years of coding experience

3 years of employment as a software developer

High School, High School at Thomas Jefferson High School for Science & Technology

Computer Science, Computer Science at University of Maryland

Linguistics, Linguistics at William & Mary

English, Spanish, Chinese

Github Skills (7)

golang10

cosmos-sdk10

versioning10

go10

database-design10

blockchain10

tendermint9

Programming languages (12)

C++ShellRustDCMakePLpgSQLJavaScriptGo

Github contributions (5)

cosmos/cosmos-sdk

Aug 2021 - Feb 2022

:chains: A Framework for Building High Value Public Blockchains :sparkles:

Role in this project:

Back-end Developer

Contributions:167 reviews, 12 commits, 12 PRs in 6 months

Contributions summary:Roy focused on implementing a new DB interface and an in-memory backend for the Cosmos SDK, specifically designed for versioning and ACID transactions. Their work involved defining the interface types and contributing to the backend implementation. These changes involved modifying existing database types and adding code for setting, deleting, and iterating data. This implementation supports the architecture specified in ADR-040.

golangcosmos-sdkblockchainchainscryptocurrency

vulcanize/cosmos-sdk

May 2021 - Jul 2022

:chains: A Framework for Building High Value Public Blockchains :sparkles:

Contributions:17 reviews, 12 PRs, 288 pushes in 1 year 2 months

blockchainchainsblockchain-networksparklesblockchains

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