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# Staff Software Engineer, Revenue & Billing

- **Company:** RILLET, LLC
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Artificial Intelligence, Amazon Web Services, Code Review, Financial Software, PostgreSQL, Svelte, Software Engineering, TypeScript, Spring-boot, Backend, Kotlin, Front End Software Development
- **Published:** November 13, 2026
- **Apply:** https://startup.jobs/staff-software-engineer-revenue-billing-rillet-10755114

## About the Role

* 10+ years of software engineering experience, or equivalent depth and impact, with a track record of leading complex product systems from ambiguous problem to production outcome.
 * Strong backend and architectural fundamentals. You can reason about data modeling, correctness, system boundaries, performance, and safe changes to existing systems.
 * Staff-level technical leadership: you establish direction, explain your reasoning, bring partners with you, and remain accountable for the result.
 * Strong product judgment and clear communication. You can translate a complicated domain into models and decisions that engineers and business partners understand.
 * A practical approach to quality and delivery. You can balance immediate customer needs with the foundational improvements that make future work faster and safer.
 * Thoughtful use of AI in your engineering workflow, backed by your own technical judgment and careful validation.

Our stack

Svelte 5 and TypeScript on the frontend; Kotlin and Spring Boot on the backend; PostgreSQL and AWS. We value strong engineering fundamentals and the ability to learn the tools needed for the problem.

Bonus points

 * Experience building billing, subscription, usage-based pricing, revenue recognition, ERP, accounting, or other financial software.
 * Hands-on experience with Kotlin, Java, or TypeScript.
 * Experience evolving complex financial data models or improving the reliability and performance of business-critical systems.

## Description

RAT owns billing, revenue recognition, tax integrations, and the financial data layer behind these workflows. You'll help turn complex contracts and financial rules into reliable systems and clear product experiences. This is a role for someone who can set technical direction, make difficult tradeoffs, and stay close to implementation., * Own significant product and technical problems across billing and revenue, from clarifying requirements and designing the data model through implementation, rollout, and production support.

 * Shape the architecture behind contracts, pricing, invoicing, amendments, revenue recognition, and related tax workflows. Make the behavior accurate, explainable, and easier to extend.
 * Improve the reliability and performance of financial workflows as customer complexity and data volumes grow. Build strong validation, testing, and observability into the systems you own.
 * Partner with product, design, accounting experts, and customer-facing teams to make sound tradeoffs and deliver work that solves real customer problems.
 * Work across the stack, with a strong backend focus and the willingness to build the interfaces customers use to understand and manage their financial data.
 * Use AI to amplify your impact and deliver more value to our customers.
 * Raise the team's technical bar through design reviews, code reviews, mentoring, and hands-on collaboration. Help other engineers take on larger problems and make better decisions.