Senior Frontend Growth Engineer

Aircall, a unicorn AI-powered communications platform, is hiring a Senior Software Engineer for Growth & Onboarding in Madrid. You will design and build journeys that activate users, boost adoption, and improve trial conversion with Product, Design and Data colleagues. Although a full‑stack role, the emphasis is frontend: deliver user‑facing experiences, run rapid experiments, and shape the early customer journey at Aircall. You’ll own end‑to‑end features with strong engineering quality.