Senior Engineer, Fullstack - Growth

📋 Description

• • Lead frontend architecture and technical direction for the self-serve onboarding and platform experience, with real ownership over how it's built, not just what gets shipped
• • Spend roughly 80% of your hands-on codebase time on frontend and 20% on backend
• • Partner closely with Design to take onboarding and platform experience from concept to production, shaping the details that decide whether a merchant's first steps with Primer feels effortless or frustrating
• • Mentor and raise the bar for the engineers who join the team, you're the person newer engineers learn frontend craft from
• • Set frontend conventions and quality standards for a team that's still being built — architecture reviews, code quality, testing approach, all early enough that your calls stick
• • Contribute to the Python backend where it's needed to unblock frontend work or ship a feature end to end, without needing deep backend expertise going in
• • Strong, proven frontend expertise — production experience architecting and building complex frontend applications, not just consuming a design system
• • Comfortable being the most senior frontend voice in the room, including pushing back on design or product where the frontend reality demands it
• • Some backend experience and a genuine willingness to work in a Python codebase — depth isn't required, but you shouldn't be reluctant to touch it
• • Experience mentoring other engineers, ideally including people earlier in their career than you
• • Experience building or integrating payment products
• • Experience in a growth, onboarding, or activation-focused product surface
• • The team is still forming, so you're inheriting mentoring responsibility for people who haven't been hired yet — the "who" of who you're mentoring is still unknown
• • Remote-first, high autonomy, no hand-holding — you're expected to set your own standards, not follow someone else's playbook
• • Early-stage team means some ambiguity on process and tooling that a more established team would already have solved