Amogh Jahagirdar

backend engineer - billing, monetization, platform integrity

Amogh Jahagirdar

01Contact

San Francisco, CA
me [at] amogh [dot] info
GitHub
LinkedIn
Resume (PDF)

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. Competitions Expert on Kaggle, with a silver medal in the top 1% of 1,600+ teams for Toxic Text classification.

03Work

Luma AI

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

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

  • Designed settlement for the billing ledger that had never closed periods, stopping stale overage debt from silently draining $26k in credits from 2.5k users.
  • Launched Pay-As-You-Go billing for Enterprise, using which 17 enterprise teams spent $100k within 2 months.
  • Shipped Luma's first third-party GPU inference path, carrying nearly all Ray 3 video generation at up to 1M videos/month with 99.5% completion rate.
  • Implemented watermark enforcement for free-tier exports at 6M+ artifacts/month, driving a 22% increase in conversion.
  • Built the content moderation pipeline that scans 12.5M+ artifacts/month at 99.3% coverage, enforcing 108k+ policy refusals per month.
  • Created an in-app messaging framework for modals, banners, and prompts, serving 3M+ calls/week to 200k users, with 18 engineers building on top of it.

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 ($3.2B in 2024, per CoinGecko). Built fault-tolerant transaction execution at 100k+ on-chain ops/day, 3x throughput, 99.99% uptime.
  • 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.

  • Won a silver medal in the top 1% of 1600+ teams, and my Kaggle profile was promoted to Competitions Expert.
  • 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.