An Introduction to Primer Primer is the unified infrastructure for global payments. We give finance and payments teams the visibility and control to reduce complexity, improve performance, and capture more revenue - all from a single platform. Backed by Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, and Balderton, we're building the payments layer the world's best companies rely on. Watch our showcase > Read up on our $100m Series C Learn more about our culture > Which team will you be joining? The merchant experience is only as good as the platform behind it — and most of that experience is the interface itself. The Account Experience team builds and owns the full platform merchants use to interact with Primer — from initial setup through to day-to-day operations, and increasingly through Primer AI Companion as a first-class interface. The team spans several connected areas: Primer Companion, Merchant Account Setup, Monitors, Workflows, Auditing, and the cross-cutting concerns that keep the whole merchant experience cohesive. As Staff Engineer you'll set front-end technical direction across these areas, not within a single one. You'll work across 2-3 teams, partner with multiple stakeholders, and stay hands-on in the implementation that matters most. The team runs a 'you build it, you own it' model: engineers own their work from design through to production. The stack includes TypeScript, React, and modern front-end tooling, sitting on top of services in Python, AWS, Kubernetes, and Terraform. What will you be doing? Setting and driving front-end technical strategy across the Account Experience teams, from architecture and component-system decisions through to hands-on implementation where it counts Owning the architecture of a complex, data-dense merchant platform — the patterns, state management, and performance characteristics that hold up as the surface area grows Shaping how Primer AI Companion matures as a first-class merchant interface, including the front-end architecture that makes a conversational surface feel native to the platform Holding the experience coherent across Account Setup, Monitors, Workflows, and Auditing — building the shared component and design-system foundations that stop the areas drifting apart Leading engineers across teams without direct authority, through code, design reviews, and technical mentorship that raises the front-end bar around you Owning the things that are easy to neglect: accessibility, performance budgets, and front-end observability as first-class concerns, not afterthoughts Partnering with Product and Design, and with backend engineers across teams, to shape decisions where front-end constraints or opportunities are material What we're looking for Demonstrable experience operating at staff or principal level: setting front-end technical direction across multiple teams, not just within one Deep front-end engineering expertise with TypeScript and React, and a track record of architecting complex, long-lived web applications Real fluency in the things that separate good front-end from great: state management at scale, performance, accessibility, and component-system design The kind of judgment that earns trust fast — engineers follow your technical lead because you're right, not because of your title Enough comfort across the stack to reason about the APIs and services your front-end depends on, and to partner with backend engineers as an equal Strong written and verbal communication, including making complex technical decisions legible to Product, Design, and non-technical stakeholders Comfort working in payments, fintech, or platform contexts is welcome, though depth of engineering matters more than the specific industry You may not like it here if: You prefer a defined lane — at Staff level you'll be expected to find and shape the work across several teams, not wait for it to be handed to you You think of front-end as the layer that just renders what the backend sends — here

Staff Engineer, FE - Account Experience

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