As a Staff Software Engineer at Rillet, you will lead the architecture and development of an industry-defining, AI-native ERP platform. You’ll drive technical strategy, own high-impact systems end-to-end using Kotlin and Svelte, and collaborate cross-functionally to automate complex financial closes while raising the engineering bar through mentorship and high-quality standards.
Staff Software Engineer at Rillet
Backed by $95M from Andreessen Horowitz, Sequoia, and ICONIQ, we are redefining accounting and finance for the modern era. As a Staff Engineer, you'll own end-to-end systems, drive technical strategy, and scale our platform using a stack of Kotlin, Svelte 5, and AI. If you have 5+ years of experience and a track record of leading complex projects, this is your chance to shape the engineering culture of a $500M company and build software that gives finance teams superpowers.
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Location
New York City, United States
Compensation
Not Disclosed
Company
Rillet
Role overview
Software
Rillet is an AI-native enterprise resource planning (ERP) platform designed to automate accounting and financial close processes for high-growth companies, particularly SaaS businesses. The platform automates revenue recognition compliant with ASC 606 standards, invoicing, payment tracking, bank reconciliation, journal entry booking, and multi-entity consolidation. Built from scratch with AI embedded in the core architecture rather than retrofitted, Rillet handles complex subscription revenue models including usage-based billing and deferred revenue without requiring third-party add-ons. The company processes over 100 million transactions daily and automates 99.7% of journal entries, enabling finance teams to close books in days instead of weeks.
What you will do
- Lead the end-to-end design and implementation of complex features across a modern stack including Kotlin, Spring Boot, and Svelte 5.
- Partner closely with product, design, and finance experts to navigate technical tradeoffs and ensure product decisions align with customer impact.
- Elevate engineering excellence by driving continuous delivery, test-driven development, and reliability while mentoring other engineers through rigorous code reviews.
Who this is a fit for
- Has 5+ years of software engineering experience with at least 2 years in a Staff, Senior Staff, or Principal role driving cross-team impact.
- Demonstrates deep backend fundamentals with Kotlin or Java and a willingness to work full-stack across the frontend and infrastructure as needed.
- Possesses strong product instincts and thrives in fast-moving environments where they can reason from first principles to solve complex fintech challenges.
Why this role is remarkable
- Work at the forefront of AI-native enterprise software, building tools that provide finance teams with automated superpowers rather than just outsourced thinking.
- Join a high-growth startup valued at ~$500M with heavy backing from world-class investors including Andreessen Horowitz, ICONIQ, and Sequoia.
- Shape the engineering culture and technical strategy of a Series B scaleup where the playbook is still being written and ownership is paramount.
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I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
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