Software Engineer - Billing

AI overview

Design and build scalable event-driven billing systems using Python and Kubernetes, integrating with Stripe and Orb for real-time billing and analytics.

We are looking for a Software Engineer to help build the next generation of usage-based billing systems at fal. This role is ideal for someone passionate about designing scalable event-driven systems that integrate tightly with Stripe and Orb, power real-time usage tracking, and deliver accurate, flexible billing experiences for customers.

You will work cross-functionally with Product, Finance, and Infrastructure teams to ensure our billing system is robust, accurate, and capable of supporting new pricing models as our product grows.

What You'll Do

  • Design and build event-driven billing systems that process real-time usage data.
  • Integrate with Orb for usage metering and Stripe for payments and invoicing.
  • Build Python-based microservices running on Kubernetes to handle billing workflows.
  • Develop data storage and processing flows for downstream analysis in BigQuery.
  • Collaborate with product engineers to build Next.js dashboards and admin tools for billing insights and reconciliation.
  • Ensure billing systems are accurate, auditable, and scalable to support new product launches and pricing models.
  • Partner with Finance to automate reporting, reconciliation, and revenue analytics.

What We're Looking For

  • Experience with usage-based billing systems or event-driven architectures.
  • Strong Python skills for backend microservices.
  • Familiarity with Stripe (payments, invoicing) and Orb (usage metering) APIs.
  • Experience with Postgres for transactional data and BigQuery for analytics.
  • Experience with Kubernetes and containerized deployments.
  • Ability to build admin interfaces or customer dashboards using Next.js.
  • Comfort working with event-driven data pipelines (e.g., Kafka, Pub/Sub, or similar).
  • Strong cross-functional collaboration skills with Finance, Product, and Data teams.

Nice to Have

  • Experience with FinTech, SaaS, or cloud usage billing at scale.
  • Familiarity with cloud providers (AWS, GCP) and their billing models.
  • Knowledge of pricing experimentation or monetization platforms.

Compensation

  • $160,000 - $200,000 + equity + comprehensive benefits package

Location

  • We are currently hiring in downtown San Francisco.

In the modern era, content is shifting from being human-made and algorithm-distributed to being generated on demand - personalized in real time for every audience, context, and moment. We’re Fal, and we’re building the infrastructure powering this transformation. Our platform is the first of its kind: a generative media stack for developers that enables real-time, AI-generated content across image, video, and audio.   At the core is our serverless Python runtime, purpose-built to run massive ML models across thousands of GPUs with unmatched speed and efficiency. Applications built on Fal already serve millions of users - and we’re just getting started. Founded in 2021, we're scaling fast and backed by top investors including a16z, Bessemer, and Kindred. If you're an ambitious builder who wants to define the future of AI and media, we’d love to meet you.

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Salary
$160,000 – $200,000 per year
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