Amogh Jahagirdar

backend engineer - billing, monetization, platform integrity

Amogh Jahagirdar

01Contact

San Francisco, CA
me [at] amogh [dot] info
GitHub
LinkedIn

02About

I'm a backend engineer at Luma AI, where I work on billing, monetization, and platform integrity. Previously I built payments and crypto infrastructure, including an open-source Stripe library for React Native that has processed $1M+ in transactions for more than 32k customers.

03Work

Luma AI

Backend Engineer (hire #3), Feb 2026 - present

Billing, monetization, and platform integrity for the agent platform.

  • Built the spending cap that stops enterprise teams from running past their budget: 4,178 teams have been stopped right at the cap they chose - median 1.01x the cap when cut off, against 2.5x-4.9x overshoots before.
  • Shipped the UI directives framework - the system that lets agent responses drive the product's interface - now carrying 3.08M calls a week from 185k users; 18 other engineers have built on it.
  • Found and fixed errors in the system that finalizes each team's bill, restoring 8.8M credits of paid overage to 2,191 teams.
  • Built the gates that keep abuse off the platform: a content-policy filter on the API that has blocked 523k prompts before generation (12% of all attempts), and phone verification at signup that has stopped 8.8k abusive signups.
  • Fixed agent jobs that were tying up main-database connections during long external calls, cutting long connection holds from 567k a day to 18.

04Earlier work

  • Slingshot Finance - Backend Engineer. Early engineer (#10); took the product from 0 to 1 through its acquisition by Magic Eden - 100+ services on Kubernetes, trade engine at 10k RPS, 1M transacting MAUs at peak.
  • Magic Eden - Backend Engineer, via the Slingshot acquisition; the largest NFT marketplace by trading volume (2024). Built fault-tolerant transaction execution at 100k+ on-chain ops/day, 3x throughput, 99.99% uptime.
  • Qeepsake and Reward Me Now - Freelance Developer. Commercial React Native apps used by 1M+ users; custom GraphQL + Stripe SDK backend for in-app payments.

05Projects

06Talks

07Open source

Ethereum developer tooling

Built with scaffold-eth / BuidlGuidl.

Packages

08Writing

Multilingual Toxic Comment Classification

Kaggle competition: train on English toxic comments, detect toxicity across languages.

  • With little usable multilingual data, we generated our own with translation models.
  • Trained language-specific models on the translated sets and blended the results over many rounds of hyperparameter tuning.
  • Team Sentimental took a silver medal, 14th of 1600+ teams, and my Kaggle profile was promoted to Competitions Expert.