Principal Software Engineer, Replit

• 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 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
• Tools + Tech Stack for this role: Rust, TypeScript, React, Postgres, GraphQL, and Node.js

Desirable

• This is a Principal Product Engineering role focused on Money Infrastructure at Replit
• You’ll work on the financial backbone that powers how Replit earns money, how builders earn money, and how Agents transact
• This role sits at the intersection of engineering, product, and the business
• The systems you build directly impact revenue, trust, and some of the most critical user journeys on the platform
• Getting them right enables growth, experimentation, and global scale
• Getting them wrong creates broken payments, confusing pricing, and lost trust
• We’re looking for engineers who can design and scale reliable financial systems while translating complex monetary logic into intuitive, user-friendly experiences for both Replit customers and builders on the platform
• We love folks who have a passion for monetizing innovation and being a part of the greater pricing story
• 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