Founding Product Engineer at Sparkles

We’re hiring a founding engineer who moves fast, cares about craft, and wants real ownership from day one. You’ll live in a hacker house with the team and build side by side with the founders from day one. You should already use AI tools by default — pushing Cursor, Claude Code, Codex, and agent workflows hard, judging output critically, and moving faster without lowering the bar. Build and ship core product features end to end. Talk to users constantly , find bottlenecks, and ship fixes fast. Suggest new features, new products, and new internal tooling. Help set the engineering bar , architecture, and pace of the company. This is not a role where you can coast. It requires deep ownership, agency and responsibility. Strong TypeScript and React skills. Roughly 1–5 years shipping real product software is a good baseline, but we will flex for someone unusually strong. Ability to build full-stack product features with high autonomy. Strong product instincts and a bias toward outcomes. High agency: you notice problems, propose solutions, and drive things to completion. Good design taste. You can make sensible UI/product decisions, and Figma fluency is a plus. Clear communication and str