Software Engineer, Platform

What We Do

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.

Who We Are

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

Experienced engineers who've made infrastructure a competitive advantage — not just reliable plumbing. You've owned the systems that let product teams ship with confidence, you think in tradeoffs, and you care deeply about how a team builds, not just what ships.

We're building industry-defining accounting and finance software. Our platform needs to scale with us, and we want an engineer who brings a point of view to that 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 within commutable distance of our NYC or SF offices (or willing to relocate). The team works in-office Tuesdays and Thursdays, plus one additional flexible day.

What You'll Do

• Own the infrastructure, CI/CD, and developer tooling that keeps our engineering team shipping fast and safely at scale

• Set the technical direction for reliability, security, and compliance — building these in from the ground up rather than bolting them on later

• Shape the design and scalability of our external API, turning it into a competitive asset for customers and partners

• Partner with engineering leadership to define roadmap priorities and translate ambiguous problems into clear technical plans

• Raise the bar for engineering quality through design 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 projects

• Deep expertise in AWS — this is our primary cloud and you'll own it

• Hands-on experience with CI/CD, observability tooling, and distributed systems

• Comfortable making technical decisions and navigating hard tradeoffs at whatever scope your role demands

• Energized by building in a fast-moving environment where the playbook is still being written

Bonus Points

• Experience building or maintaining third-party integrations (ERP, fintech, or similar)

• Background in fintech, ERP, or accounting software

• Experience owning and scaling public-facing APIs

• Familiarity with enterprise readiness (SOC 2, SSO/SAML, audit logging, or similar)

• Kotlin, Java, or TypeScript experience

• Prior experience at a high-growth startup

The base salary for this role ranges from $150,000 to $270,000, plus equity and benefits. Exact compensation depends on your skills, experience, location, and background, and the range may be adjusted over time. Equity is part of the package, all full-time employees participate in Rillet's equity plan. Beyond that, we offer health and wellness coverage, retirement savings, and a broader set of benefits designed to support you inside and outside of work.

Life at Rillet:

• 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.