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Software Engineer, Monetization Platform

Simular· Engineering
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SingaporeFull-timePosted 2mo ago

About the role

Backend-focused SaaS monetization role building accounts, subscriptions, billing, payments, and entitlements. Responsible for designing robust billing systems, integrating payment providers, and maintaining accurate financial records to support product access and revenue.

Responsibilities

  • Own the domain models and APIs for customer accounts, organizations, workspaces, plans, pricing, trials, seats, and entitlements
  • Build subscription and usage-based billing systems, including metering, aggregation, invoicing, credits, proration, upgrades, downgrades, cancellations, and recovery flows
  • Integrate Stripe and future payment providers across checkout, recurring payments, payment failures, refunds, disputes, and provider webhooks
  • Design robust payment and billing state machines that are idempotent, replay-safe, observable, and resilient to duplicate, delayed, or out-of-order events
  • Build trustworthy financial records, reconciliation workflows, audit trails, and internal tools for resolving account and billing exceptions
  • Partner with product and customer-facing teams to translate commercial requirements into simple, maintainable systems and customer experiences
  • Set a high bar for correctness and operational ownership in systems where a wrong charge or missing entitlement directly affects customer trust

Qualifications

  • BS/MS in Computer Science or equivalent experience
  • 5+ years of backend engineering experience
  • Built production systems for B2B SaaS, e-commerce, fintech, or another transaction-heavy product
  • Hands-on experience with Stripe or a comparable payment provider, including webhooks, payment lifecycle events, and failure handling
  • Ability to model complex business domains such as accounts, subscriptions, orders, invoices, payments, usage, and entitlements
  • Understanding of idempotency, transactional consistency, money precision, reconciliation, auditing, and safe data migration practices
  • Strength in relational databases and production API design; ability to reason about correctness under retries and partial failures
  • Bias for action, clear communication, and ownership of an ambiguous 0 to 1 domain end-to-end
  • Bonus: experience with usage-based billing, revenue operations, tax or invoicing systems, multi-currency payments, or financial ledgers

Skills

Required:Backend engineeringPayment provider integrationDomain modeling (accounts/subscriptions/invoices/payments)
Last updated Jul 29, 2026. Interested? Apply on the company site.

About Simular

The Autonomous Computer Company

Simular AI delivers open-source, intelligent AI agents powered by leading research to automate computer tasks, streamline workflows, and enhance productivity. Transform your digital experience today!

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