Greg Nazario
Software Engineer (Founding Team) at Aptos
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolGreg Nazario is a software engineer with 12 years of experience building and operating large-scale distributed systems, currently on the founding engineering team at Aptos. He specializes in developer-facing API and tooling for cloud SaaS and layer-1 blockchains, having worked deeply on Diem and Aptos core networking, consensus, REST APIs, SDKs, and Move language support. Prior roles at AWS and Facebook sharpened his operational focus—designing high-throughput load balancer APIs, reducing on-call noise, and cutting troubleshooting time from minutes to seconds. Greg combines systems-level Rust and backend expertise with production-first developer relations and education, enabling smoother developer onboarding to complex blockchain stacks. Notably, his open-source contributions to aptos-core helped add transaction payload handling, coin ops, and automatic gas estimation to a widely watched L1 project. Based in New York, he blends research-grade fundamentals from Carnegie Mellon with pragmatic product engineering at scale.
12 years of coding experience
8 years of employment as a software developer
Master of Science (M.S.) Electrical and Computer Engineering, Master of Science (M.S.) Electrical and Computer Engineering at Carnegie Mellon University
Stackoverflow
1reputation
0reached
2answers
0questions
Github Skills (19)
algorithm10
transaction10
transactional10
consensus10
distributed-systems10
networking10
lang10
blockchain10
move10
rust10
movelang10
api-design9
testing9
estimate9
error-handling9
Programming languages (15)
Github contributions (5)
aptos-labs/aptos-core
Apr 2022 - Jan 2023
Aptos is a layer 1 blockchain built to support the widespread use of blockchain through better technology and user experience.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 2320 reviews, 717 commits in 9 months
Contributions summary:Greg primarily worked on back-end code changes within the Aptos-Core repository. The commits focus on adding support for handling transaction payloads for the move language, incorporating coin operations, and enabling automatic gas estimations. Their contributions also include enhancements to the internal infrastructure for handling transactions and integrating with the REST API for improved functionality and efficiency of the system.
blockchain-platformblockchainuser-experienceblockchain-networksmart-contracts
diem/diem
May 2020 - Nov 2021
Diem’s mission is to build a trusted and innovative financial network that empowers people and businesses around the world.
Role in this project:Back-end Developer
Back-end DeveloperContributions:928 reviews, 365 commits, 215 PRs in 1 year 6 months
Contributions summary:Greg focused on improving the network library and implementing core consensus features. Their contributions included improving error reporting during network connections in the network library, adding verification checks for epoch-related proposals in the consensus safety rules, and integrating the chain-id to differentiate between blockchains, along with introducing network context logging. They also added code to temporarily decrease the maximum backoff delay. Their work involved modifying core components and tests related to network communication and consensus mechanisms within the Diem blockchain project.
diemfinancialtrustedethereumblockchain
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