Jason Haruska
Staff Engineer at Pinecone
Chicago, Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolJason Haruska is a Staff Engineer in Chicago with 18 years building high-scale, production systems across startups and large companies. He has led architecture and execution from founding CTO roles to staff engineering at Shopify and Pinecone, driving a Rust-based GraphQL gateway that cut p50/p99 latency significantly and handled millions of requests per minute. Jason combines deep full-stack expertise—Ruby/Rails, Go, Rust, TypeScript, GraphQL—with hands-on operational experience scaling services on AWS, Cassandra, Sidekiq, and serverless platforms. He’s founder-minded, having built and sold startups and bootstrapped products, and has repeatedly moved teams to modern practices like continuous deployment and performance-first design. An active backend contributor, he improved the jsonb_accessor gem for typed JSONB fields and added performance-focused refactors and tests. Pragmatic and curious, he pairs systems-level thinking with pragmatic developer tooling to turn ambitious performance goals into reliable, shipped systems.
17 years of coding experience
19 years of employment as a software developer
BS Computer Science, BS Computer Science at University of Michigan
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (5)
performance-testing10
activerecord10
postgresql10
ruby10
testing9
Programming languages (9)
Github contributions (5)
madeintandem/jsonb_accessor
Apr 2016 - Apr 2016
Adds typed jsonb backed fields to your ActiveRecord models.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 10 commits, 6 PRs in 1 day
Contributions summary:Jason focused on enhancing the `jsonb_accessor` library, which provides typed JSONB fields for ActiveRecord models. Their contributions included implementing features to clear dirty information on JSONB attributes during initialization, bumping the library version, and adding a performance test. They also refactored code to use `write_attribute` instead of setters for typed attributes, improving efficiency.
queryjsonbrailsrubyactiverecord-models
PoolMadness/espn-scraper
Feb 2016 - Feb 2021
Contributions:15 pushes, 1 tag in 5 years
scoresrubyscrapinggemscraper
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