Email engineer, most recently at Prezi. I built and shipped lifecycle email and in-app messaging there, automated with AI.
Seven years across design and front-end. The AI pipeline I built (Claude → Cursor → Braze) took campaign production from 3–8 hours to under 15 minutes.
What I worked on
- Hand-coded email templates (HTML/CSS + Liquid) and in-app messages (HTML/CSS + JavaScript) for lifecycle campaigns in Braze
- A/B tested subject lines and CTAs at 3M+ sends per arm, analysed in Hex
- Cross-client QA across Gmail, Outlook, and Apple Mail. Accessibility. Dark mode. VML for Outlook.
- Before Prezi: growth campaigns at Pier, +5M ad impressions in 7 days
Stack
HTML CSS Liquid JavaScript Braze Litmus Hex Figma React Next.js Node
Open source
ai-design-engineering — patterns from building an AI-assisted production pipeline (brief schemas, prompt patterns, cursor rules, anti-patterns).
Links
Portfolio · LinkedIn · leonardt@outlook.com
Based in Portugal · EU + Brazil work authorization · PT / EN / DE