Senior Frontend Engineer

Farseer is a fast-growing startup building an enterprise software stack from first principles. We aim to become the underlying database and operating system for every business-critical app, from financial planning and analytics to accounting and beyond. Farseer empowers humans to build enterprise software with the help of AI. Over the next decade, we will rebuild the enterprise nervous system. We are starting with finance, a real-time collaborative planning and reporting platform that turns finance teams into proactive strategists. Once that foundation is solid, the same AI-native core will extend across the operational stack, reporting, supply chain management, manufacturing, procurement, revenue ops, and more. Our mission is to build enterprise software that people enjoy using. No user-hostile screens. No bloated workflows. Just fast, intuitive tools that help teams solve real business problems. What you'll do Core Product builds the product itself — everything users see, touch, and rely on every day. That includes sheets, variables, dimensions, scenarios, modeling logic, planning workflows, collaboration, dashboards, and the backend systems that make all of it feel fast, reliable, and coherent. The technical surface area is broad, and the constraints are real: models with millions of cells, real-time recalculation across deep dependency graphs, multi-user editing on the same surface, enterprise-grade permissions and audit logs — all fast enough that finance teams choose to work in Farseer instead of going back to Excel. As a Senior Frontend Engineer on Core Product, you own those surfaces. You'd be joining a small team of senior engineers across backend and frontend. You'll: Build the modeling UI — sheets, formulas, dimensions, scenarios Build planning workflow UI — assignments, approvals, locks, scheduled processes Build collaboration UI — audit log, comments, permissions, multi-user editing Build visualizations, reporting, and dashboards Make core user actions feel instant. Performance of the UI is part of the product Work with the design system across these surfaces, and shape it where it doesn't yet exist And one more thing — Core Product Engineers who develop broad product judgment here tend to go on to lead new specialized teams as the company grows. What we're looking for You don't need to know our stack by heart. You need to think like a senior engineer — which means clear judgment, real ownership, and the ability to make sound calls when the right answer isn't obvious. You are a good fit if you: Have shipped production frontend at real complexity — data-dense interfaces, heavy state, heavy interactivity. Framework doesn't matter as much as judgment Can build interfaces that hold up under real data volume — large grids, deep hierarchies, fast recalculation Think in components, design systems, and patterns that scale across a product Have opinions about state management, rendering performance, and where complexity should live, and can defend them Are comfortable working in an interconnected product where shipping a new screen often means simplifying three older ones Use AI tools to move faster — code generation, debugging, prototyping Nice to have Experience with spreadsheet-like interfaces, modeling tools, BI tools, or anything where users build structured logic in a UI Background in financial, analytical, or planning products Strong design sensibility — you should be able to tell when something is off and push back on it A note about the role Farseer is an enterprise product with real customers, real complexity, and a small senior team building it. The standard inside the team is clear thinking, real ownership of outcomes, and the agency to push work forward without waiting to be told. PR merged isn't done; users getting value is done. If that's how you want to work, hit apply.