# Greg Nazario > Founding Engineer at Aptos Labs Location: New York, New York, United States Profile: https://flows.cv/gregnazario Software engineer with 10+ years of experience in building and maintaining large scale centralized and decentralized distributed systems. I've mainly focused in customer API experience around cloud based SaaS and maintaining solutions to keep them operationally viable. Additionally, I've focused on centralized and decentralized ledger solutions and blockchains including in networking and internode communication. Over the last 4+ years I’ve worked on the Diem and Aptos blockchains ## Work Experience ### Founding Engineer @ Aptos Jan 2022 – Present | San Francisco Bay Area Spent my time interested in how developers build on blockchains, and how to make their experience better. I've worked on all parts of the stack for the Aptos (and previously Diem blockchains): 1. REST APIs 2. Client SDKs 3. Developer tools 4. Move language development 5. Networking 6. Developer Relations 7. Developer Education 8. And much more... ### Senior Software Engineer @ Facebook Jan 2020 – Jan 2022 | Menlo Park, California, United States • Worked on the Diem blockchain (formerly Libra) with networking, mempool, and full nodes • Developed and onboarded all teams onto a logging framework to reduce log loss • Developed networking solutions between Diem nodes • Developed Full node solutions for interoperability across multiple decentralized nodes • Developed Mempool improvements to the Diem blockchain to improve reliability of sending transactions between nodes • Coding in Rust ### Software Development Engineer @ Amazon Web Services (AWS) Jan 2018 – Jan 2020 | Seattle, Washington Amazon QLDB (https://aws.amazon.com/blogs/aws/now-available-amazon-quantum-ledger-database-qldb/) • Led weekly operational meetings for entire product across 5 teams. Designed agenda and process for following up about operational issues. • Led a team of 4 engineers to launch API integrations with 8 AWS services in 4 months • Independently designed and built an operational UI tool decreasing troubleshooting time from 15+ minutes to under 2 minutes • Collaborated across multiple teams to build a UI to help customers interact with their database in less than 5 minutes • Coded in Kotlin & Java ### Software Development Engineer @ Amazon Web Services (AWS) Jan 2016 – Jan 2018 | Seattle, Washington Elastic Load Balancing (ELB) API team • Led weekly scrums and operational meetings for a team of 6 engineers and quarterly planning • Designed and led a 3 engineer team to build IP target load balancing within 3 months across 3 teams • Optimized APIs around database constraints to scale to thousands of requests per second • Designed and built an operational UI tool on a Ruby on Rails website to determine customers affected within 30 seconds and root cause within 5 minutes • Raised operational excellence by driving on-call pages from 40 a week to 2 a week • Coded in Java, Ruby, and Python Some of the projects I worked on: • https://aws.amazon.com/blogs/aws/new-application-load-balancing-via-ip-address-to-aws-on-premises-resources/ • https://aws.amazon.com/blogs/aws/new-aws-application-load-balancer/ • https://aws.amazon.com/blogs/aws/new-network-load-balancer-effortless-scaling-to-millions-of-requests-per-second/ • https://aws.amazon.com/blogs/networking-and-content-delivery/using-static-ip-addresses-for-application-load-balancers/ ### Software Development Engineer @ Amazon Web Services (AWS) Jan 2014 – Jan 2016 | Seattle, Washington Elastic Load Balancing API team • Designed and built APIs for the Application Load Balancer (ALB) and the Network Load Balancer (NLB) platforms • Organized and collaborated with 6 AWS services for the launch of the ALB platform • Built a dynamic configuration service used across 4 different teams at thousands of requests per second on hundreds of hosts Most of what I worked on: • https://aws.amazon.com/blogs/aws/new-aws-application-load-balancer/ ### Teaching Assistant @ Carnegie Mellon University Jan 2013 – Jan 2014 | Pittsburgh, PA 18-487 Introduction to Computer Security, Network Security, and Applied Cryptography • Designed security problems to teach students security basics 18-340 Digital Computation • Gave students problems involving gate level designs of arithmetic units and floating point units ### Software Development Engineer Intern @ Amazon Web Services Jan 2013 – Jan 2013 | Seattle, WA • Improved speed of existing metric storage system • Implemented improved metric lookup system • Coded in Java ### Software Development Engineer Intern @ Amazon Web Services Jan 2012 – Jan 2012 | Seattle, WA • Worked on encryption and streaming features for S3 Ruby SDK • https://aws.amazon.com/blogs/developer/using-client-side-encryption-for-s3-in-the-aws-sdk-for-ruby/ • https://aws.amazon.com/releasenotes/release-aws-sdk-for-ruby-1-6-3/ • Coded in Ruby ### Teaching Assistant @ Carnegie Mellon University Jan 2012 – Jan 2012 | Pittsburgh, PA 18-341 Logic Design Using Synthesis, Simulation, and Verification Techniques • Taught students intermediate logic design using SystemVerilog • Designed projects for students ### Teaching Assistant @ Carnegie Mellon University Jan 2011 – Jan 2012 | Pittsburgh, PA 18-240 Structure and Design of Digital Systems • Taught students logic design concepts • Designed processor simulator for students to use ### Research Assistant @ Carnegie Mellon University Jan 2011 – Jan 2011 | Pittsburgh, PA • Worked with SAFARI research group at CMU • Performed research into better Networks on Chips • Helped write two technical reports on better routers and topologies • Helped write a paper that was presented at the Network on Chip Symposium (NOCS) ### IT Intern @ SSI Schaefer Systems International Ltd Jan 2010 – Jan 2010 | York, PA • Tested and commissioned a large-scale food storage and packaging system ## Education ### Master of Science (M.S.) in Electrical and Computer Engineering Carnegie Mellon University ### Bachelor of Science (B.S.) in Electrical and Computer Engineering Carnegie Mellon University ## Contact & Social - LinkedIn: https://linkedin.com/in/gnazario - Portfolio: https://gnazar.io --- Source: https://flows.cv/gregnazario JSON Resume: https://flows.cv/gregnazario/resume.json Last updated: 2026-04-13