Jonathan Koch

ML Engineer & Startup CTO

Jonathan Koch

Hi, I'm Jonathan.

ML Engineer at Topaz Labs and Co-Founder & CTO of Hirebase. I build production ML systems for image enhancement and large-scale data platforms. Passionate about shipping models that reach millions of users.

Current Roles

Featured Work

Topaz Labs

Topaz Labs

ML Engineer · June 2024 – Present

Designing and shipping ML models powering image and video enhancement for millions of users.

  • Built flagship Autopilot feature for zero-click enhancement
  • Created Portrait and Wildlife enhancement models
  • Developed Auto Sharpen API feature
  • Shipped Face Recovery V3 and High Fidelity V3
  • Led GAN architecture research for whole-image conditioning
  • Optimized model serving runtimes across hundreds of production models
Hirebase

Hirebase

Co-Founder & CTO · November 2023 – Present

Built the core tech platform behind an AI-powered job search engine scanning 4M+ live jobs, serving 150+ customers worldwide at $80K ARR.

  • Scaled core ingestion engine from 1M to 10M+ records/month
  • Built token parsing models for extracting data from raw HTML
  • Developed enterprise API with secure resume embeddings
  • Created user recommendation and prediction systems
  • Designed model inference platform and core tech stack

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