Principal Software Engineer, Money Infrastructure

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Lead the design, architecture, and implementation of Replit’s core money infrastructure, spanning pricing, billing, payments, and monetization.
Own and scale the global order-to-cash foundation supporting credit-based subscriptions, usage-based billing, marketplaces, in-app payments, and commerce for Agents.
Enable rapid pricing and packaging experimentation across the company by building flexible abstractions and APIs for new SKUs, plans, and monetization models.
Build high-converting, localized payment experiences across geographies — thinking globally while enabling users to pay locally.
Power builder monetization by creating payment rails for apps, Agents, subscriptions, and new monetization primitives.
Partner closely on data specifications with finance, accounting, and data teams to produce accurate, auditable, and reliable financial data.
Collaborate with external monetization and payments partners (e.g. billing platforms, payment processors) to accelerate execution.
Create monitoring, observability, and feedback systems to proactively detect issues, resolve failures, and optimize performance across financial flows.

8+ years of professional software engineering experience, with strong backend expertise.
Hands-on experience building or operating at least one of the following:Subscription or recurring billing platformsUsage-based or metered billing systemsPayment processing platformsSaaS taxation or compliance systemsTokenization or credits-based systems
Subscription or recurring billing platforms
Usage-based or metered billing systems
Payment processing platforms
SaaS taxation or compliance systems
Tokenization or credits-based systems
Strong system design skills, especially for high-reliability, high-correctness domains like money.
Comfort working autonomously in ambiguous, fast-moving environments with high business impact.
Excellent debugging and problem-solving skills, including handling complex billing edge cases and failure modes.
Experience building customer-facing billing or payments interfaces that simplify complex pricing models.

Experience with usage-based billing platforms like Orb, Metronome, or Stripe Billing.
Experience building coupons, referral programs, credits, or other monetization growth systems.
Experience working on marketplaces, fintech integrations, or multi-party payment flows.
Prior work on globally distributed payment systems with localization and compliance considerations.