Software Engineer

What We Do Rillet serves accounting and finance teams—the financial brains of their companies. Our job is to help them run the numbers with impossible speed, accuracy, and insight. Rillet is the AI-native ERP that middle-market and enterprise companies trust for revenue recognition, multi-entity consolidation, and investor reporting. To enable real-time finance and a continuous close, Rillet rebuilt the general ledger from the ground up for the AI era. Rillet serves companies from Series A through the public markets, including Mercor, Scribe, and Function Health, and is a certified partner of top accounting firms like EY and KPMG. This huge market is ours to take. We have raised $100M+ from leading investors, including Sequoia, a16z, Iconiq, Oak HC/FT, and First Round, to help everyone run their numbers at the speed of AI. Who We Are Rillet’s pace is not for everyone. Intelligence is table stakes. To succeed here, you need extreme speed, agency, and flexibility. The people who thrive at Rillet do not wait for assignments. They internalize the mission, design a strategy, and bring back results that are better, faster, and more creative than a manager could have asked for. Our work revolves around our customers. The people who succeed here are energized by delivering what matters most, even when it was not part of the original plan. Rillet is built on deep accounting expertise, and it takes people from many disciplines to build a category-defining company. You do not need to be an accountant to thrive here. You do need to care deeply about the problems we solve and the impact our customers can create. Together, we combine the precision of accounting with the speed, creativity, and ambition of AI-native software to power the financial core of the world’s fastest-growing companies while redefining what finance teams should expect from their software. Who We Need Experienced software engineers who drive real business impact — whether that's owning a product capability, leading a technical system, or shaping engineering strategy across teams. You've scaled through high-growth, you partner well cross-functionally, and you care about how a team builds, not just what ships. We're building industry-defining accounting and finance software. We want engineers who bring a point of view to the work. Our Tech Stack: Svelte 5/TypeScript frontend, Kotlin + Spring Boot backend, PostgreSQL, AWS. We're AI-native — meaning thoughtful application, not outsourced thinking. Our engineers still reason from first principles; AI helps with execution. We’re looking for teammates who are based near our New York City or San Francisco offices, or open to relocating. Our hybrid schedule brings the team together in person on Tuesdays and Thursdays, plus one additional flexible day each week. Some roles may spend more time in the office depending on the needs of the team. What You'll Do Own features and systems end-to-end across the full stack, from backend architecture to the interfaces users interact with every dayPartner with product, design, and finance experts to shape what we build — advocating for the right technical tradeoffs and keeping the customer perspective centralRaise the bar for engineering quality: continuous delivery, test-driven development, production reliability, and a culture of ownershipGrow the team around you through code reviews, mentorship, and hands-on collaboration Who We're Looking For 5+ years of software engineering experience, with a track record on complex, large-scale projectsStrong backend fundamentals and willingness to jump into frontend when neededComfortable making technical decisions and navigating hard tradeoffs at whatever scope your role demandsStrong product instincts — you think about user impact, not just technical correctnessEnergized by building in a fast-moving environment where the playbook is still being written Bonus Points Experience in fintech, ERP, or accounting softwareHands-on experience with Kotlin, Java, or TypeScript,Familiarity with enterprise readiness (SOC 2, SSO/SAML, audit logging, or similar) Life at Rillet Grow with us. Take meaningful ownership, expand your scope, and make an impact as Rillet scales.Competitive pay and meaningful equity. Be rewarded for the value you help create.Benefits that support you. We offer medical and dental coverage, including up to 100% of employee premiums and 90% of dependent premiums, along with a 401(k), flexible PTO, nine company-wide holidays, and paid parental leave for eligible employees.Better together. We’re hybrid-first, with teams centered in New York City and San Francisco, as well as select remote roles. Our offices are stocked with snacks, we regularly provide lunch and dinner, and we make time to connect as a team.