Staff Software Engineer - Platform

Rillet serves accounting and finance teams. Our customers are the financial brains of their companies. Our job is to help them run the numbers with impossible speed, accuracy, and insight.

Rillet is an AI-native ERP that can drive a zero-day close. We are different because of our unified source-of-truth data model, hundreds of best-in-class native integrations (Stripe, Ramp, Salesforce, etc), automated & auditable workflows, multi-entity consolidation, and quickly expanding army of specialized AI agents (e.g., accrual, audit, P&L flux, board decks, etc). These earn us a consistently perfect customer satisfaction score. High-growth AI customers like Mercor, and Function Health love our ship velocity, because their financial stack needs to scale as quickly as they do.

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.

Rillet’s pace is not for everyone. Intelligence is table stakes. To succeed here, you need extreme speed, agency, and flexibility.

Successful Rilleteers do not wait for assignments. They internalize a mission, design a strategy, and bring back results that are better, faster, and more creative than a manager could have asked for.

Work revolves around our customers. Successful Rilleteers are energized by delivering the most important things, even those that weren’t in the original plan.

In this role, you do not need to be an accountant. But you do need to appreciate the value that our customers can create for their own company when we equip them with the perfect financial tools. Successful Rilleteers love powering the financial core of the world’s fastest-growing companies.

Who We Need

We're looking for a Staff Software Engineer who combines deep technical expertise with a builder's mindset, someone who can architect resilient, scalable systems while staying grounded in what actually moves the business forward.

What You'll Do

• Lead technical decisions across Rillet's infrastructure and platform stack, driving architectural discussions and setting engineering standards

• Shape the platform roadmap for years to come, identifying opportunities to improve reliability, scalability, and developer productivity

• Partner with product and engineering teams to advocate for sound infrastructure investments and balance business velocity with operational excellence

• Establish and champion CI/CD practices, mentoring engineers on deployment strategies and ensuring reliable, frequent releases

• Lead by example in test-driven development and automation, building robust testing frameworks and fostering a quality-first culture

• Own production reliability end-to-end: design monitoring solutions, lead incident response, and implement proactive measures to ensure system stability

• Mentor engineers on the team, conducting code reviews, and raising the technical bar across the organization

Who We're Looking For

• 8+ years of software engineering experience (CS degree or related field) with a proven track record architecting scalable, resilient systems across infrastructure, developer experience, and integrations

• Deep expertise in cloud infrastructure, distributed systems, and operational tooling, and a strong instinct for building platforms that improve developer velocity and reduce toil

• Comfortable context-switching across infra, DevEx, and integrations without losing depth, equally at home optimizing a CI/CD pipeline or designing an integration architecture

• Thrives both independently and collaboratively, with a passion for continuous learning and knowledge sharing

• Open to using AI to amplify their work,bringing curiosity, sound judgment, and a willingness to learn

• Competitive Pay & Benefits: Backed by world-class investors, we offer strong salaries plus equity so you share in our success. We've got you covered with top-tier health and dental insurance, premiums partially or fully covered for you, plus 90% coverage for dependents.

• Room to Grow: We're building a team of ambitious, high-performing people who will grow with the company. As Rillet scales, so will your role, responsibilities, and compensation.

• Flexibility That Works: Take the time you need with flexible PTO and 9 company-wide holidays. We value both the flexibility of remote and hybrid work and the creativity and energy that comes from in-person collaboration at our hubs in San Francisco, NYC, and Barcelona.

• Build Real Connections: Great work happens when people connect. Join us for team offsites in incredible locations, our team has bonded everywhere from New York and San Francisco to Toronto, Italy, France, and beyond.