Account Executive - UK

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 Agentic ERP built for modern finance teams. We help companies automate the most critical parts of finance, from closing the books and recognizing revenue to consolidating entities and reporting to investors. More than 600 companies run on Rillet, including Mercor, Scribe, and Function Health, and we partner with leading accounting firms including EY and KPMG. We’re building in one of the largest software markets in the world, with the momentum to match. Rillet has raised more than $200M, is valued at $1B, and is backed by Sequoia, a16z, ICONIQ, Bain Capital Ventures, Oak HC/FT, and other leading investors. We’re using that backing to build the financial infrastructure for the next generation of companies and help every business run its 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 As our Founding Account Executive in the UK at Rillet, you’ll be at the forefront of transforming how high-growth companies run their finances. Your mission is to drive revenue growth by building deep, strategic relationships with CFOs, finance leaders, and accounting teams — helping them realize the full potential of Rillet. You’ll work with everything from fast-scaling startups to global enterprises, tailoring your approach and refining your craft along the way. This role blends business acumen, strategic sales expertise, and a strong grasp of AI-powered automation — empowering the world’s most ambitious companies to achieve zero-day close and operate with real-time financial clarity. What You'll Do • Build the GTM playbook You’ll play a key role in building the playbook and driving our GTM motion. Specifically, you’ll refine our process playbook, run message tests, perform ROI comparison analyses, experiment to find new and unexpected channels, and more. You’ll take full ownership with a scrappy approach and double down when you see signs of success. • Execute relentlessly Work cross-functionally to provide front-line prospect feedback to founders and product teams in near real-time. Perform strategic, personalized outreach to priority accounts and drive opportunities forward from SQL to signed deal. You’ll roll up your sleeves and accelerate velocity. • Represent Rillet You’ll be the face of the company — applying high customer empathy and structured problem-solving to ensure every prospect interaction is exceptional. You’re comfortable selling to users with deep finance and accounting expertise and will deepen your domain knowledge in the process. Who We're Looking For • 4–5+ years of AE experience at a top-tier SaaS startup, with