Zack Leman
Co-Founder & CTO at Jarmin
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolZack Leman is a product-driven engineering leader and Co-Founder/CTO with 12 years of experience designing and operating HIPAA-compliant, globally scalable systems for healthcare. He has repeatedly delivered high-throughput messaging and distributed architectures in AWS—architecting multi-region, HITRUST-grade infrastructure that supports millions of patients and messages daily. Comfortable both mentoring teams and shipping code, Zack led engineering growth from small teams to large organizations while introducing observability, on-call practices, and zero-downtime deployment pipelines. His background spans startups and tech giants (founding roles at catch-health and WELL Health, SWE at AWS, staff work at Meta SuperIntelligence Labs), blending deep backend systems expertise with product empathy. Notably, he rebuilt critical messaging pipelines and persistence layers to recover hundreds of millions of records and cut p99 latencies by an order of magnitude. Based in San Francisco, he pairs neuroscience-rooted curiosity with business training from Tuck to solve complex, compliance-driven product problems.
12 years of coding experience
10 years of employment as a software developer
Business Bridge Program, Business Bridge Program at The Tuck School of Business at DartmouthBachelor’s Degree Neuroscience and Computer Science, Bachelor’s Degree Neuroscience and Computer Science at Bowdoin College
Github Skills (57)
graphql-api10
mbaas10
expressjs10
object-storage10
graphql-relay10
file-storage10
parse-platform10
parse10
parse-server10
rest-api10
nodejs10
graphql10
backend10
mongodb10
relay10
Programming languages (4)
Github contributions (5)
zleman1593/zleman1593.github.io
Feb 2015 - Feb 2019
Contributions:4 PRs, 138 pushes, 1 branch in 3 years 11 months
reactnextjs
zleman1593/Particle-Swarm-Optimization-PSO
Mar 2015 - Apr 2015
Contributions:19 commits, 18 pushes, 1 branch in 1 month
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