Primer.io - Senior Engineer, Fullstack

• 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 • What you should be aware of: • 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 • ✅ A typical interview process • An initial intro call with a Talent Partner • An interview with the Hiring Manager • Challenge Stage - Contextualised to the role • A final, values-alignment interview • What's the culture like at Primer? • We're building a culture where people can do their best work and be proud of the impact they have. You'll be working with people who are mission-driven, smart, and reflective, and who are genuinely invested in building exceptional products and delivering success for our merchants. • We work remotely, and have done since day one. We believe that building a successful, profitable company goes beyond proximity. We invest in our relationships through great remote working practices and thoughtfully designed face-to-face time, including workations, our annual company retreat, and access to co-working spaces across most major cities. • The work is challenging. Scaleups are a challenge, and building category-defining products is a challenge. But there's a meaningful difference between a challenge and a struggle. At Primer, the right challenge comes with the right support: strong onboarding, a collaborative environment, and a team that is genuinely invested in your success. It's never something you face alone.