• Lead the development of core features — referral and affiliate program, improve pricing and packaging to optimize for Buffer's core value, and building Buffer's public tier and free tools to provide value far beyond signed-in users. • Drive experimentation — implement A/B tests, track key metrics to continue making Buffer's free plan the best in the market, optimize conversion and engagement that drive stronger acquisition and retention. • Collaborate across teams, you'll work closely with other teams to identify growth opportunities and implement solutions that span multiple domains. • Shape platform capabilities, build tools and systems that enable other teams to easily implement growth features, run experiments, and optimize their own conversion funnels. • Shape frontend architecture and UI standards, guide technical decisions from state management and component structure to evolving our internal design system (Popcorn), refining shared patterns, and ensuring our interfaces remain consistent, accessible, and scalable across growth initiatives. • Take shared ownership of product quality and system health. You'll participate in our on-call rotation — all engineers take a 24/7 week-long shift roughly once a quarter. You'll also contribute to the ongoing work that keeps our systems running smoothly and continuously improving, like fixing bugs, addressing security vulnerabilities, and other improvements. • Contribute to shaping our team’s engineering culture by sharing knowledge, reviewing code, and helping us all get better over time.