Rafael
Mambretti
Fractional Head of Web · Cyberhaven
Oct 2024 – Present$1B AI-powered data security platform. Reporting to VP of Growth.
- Led SEO and AEO program driving +41% organic session growth (152K → 215K) over 18 months vs prior baseline. Personally refreshed top-performing DLP guide (+36% sessions, 2.7x conversions). AI search referrals grew from a handful to 9,500+ sessions.
- Architected and project-managed the full website redesign (live Feb 2026), leading 2 dev contractors plus 2 additional during launch.
- Designed and shipped internal ads network generating 65+ MQLs with full-funnel attribution. Built PostHog tracking from scratch. Delivered Binge Pages persona learning paths and prototyped ABM Cloud.
- Built reporting across PostHog (SQL), GA4, and Looker for form-fill conversions, organic acquisition, and AI referral attribution.
Growth & SEO Consultant · Sigma Computing
Jun 2024 – Oct 2025Cloud analytics and BI platform.
- Contributed to 4x organic form fills (199 → 809/mo) and 5x organic SQLs (13 → 84/mo), alongside +66% organic unique users. Growth attributed to the SEO program combined with broader marketing initiatives.
- Designed and shipped Sigma's AEO program before AI search visibility was an industry topic. Built a new channel generating 25,889 sessions from ChatGPT, Perplexity, Gemini, Claude, Copilot at 57% engagement rate.
- Built and ranked the "data monetization" topic cluster, pushing multiple target queries to Page 1 of Google. GSC 6-month comparison: +31% clicks, +54% impressions.
- Built full-funnel growth dashboards in PostHog, GA4, and Google Sheets for marketing leadership.
Fractional Product Manager · Harbor SEO
Jul 2024 – May 2025- Led a 3-person distributed engineering team (frontend, backend, DevOps) through 2-week sprint cycles, building the full product roadmap with the founders and running backlog, specs, and scrum.
- Architected multi-LLM AI workflows integrating Anthropic (Claude), OpenAI (GPT-4), Google, DeepSeek, JINA, and Perplexity APIs, with JSON-based agent handoffs for content generation, topic research, and link building.
- Expanded product from single-feature MVP to a 7-tool SEO suite including Linker, Reworker, Topic Scaler, Site Seeker, and Writer. Shipped the Harbor 1.3 release as the flagship feature.
- Designed credit-based monetization system; stored-procedure implementation reduced manual operations by 90% and support inquiries by 42%.
Ubersuggest · Neil Patel Digital
2020 – May 2024Product Manager
2022 – May 2024- Led the Keyword Difficulty algorithm overhaul with live refresh and a new metric-refresh system, fixing a core user pain point. Monetized via a credit-based add-on that became a top-4 most-sold add-on within its first year.
- Redesigned Chrome Extension UI for 600K+ weekly users, lifting Chrome Web Store rating from 3 stars to 4 stars within months.
- Led data warehouse revamp with Metabase. Built MixPanel events schema from scratch. Partnered with the data team to reduce AWS costs by tens of thousands annually. Scoped full HubSpot integration with automated marketing triggers.
Customer Success Manager
2020 – 2022- Built and led the CS department from scratch, handling 150+ daily inquiries. Reduced first response time from hours to under 30 minutes via Zendesk automation while maintaining 90%+ CSAT and NPS above 7.
- Led Knowledge Base development for the 10M user base. Persona-based CS approach later adopted by the Product team. Oversaw integration of AnswerThePublic's support team after acquisition.
Market Growth Specialist · Brainly
Apr 2016 – Dec 2018Led growth initiatives for Brainly's Brazilian market (20M+ users). Relaunched user acquisition with zero PPC spend, driving a 950% traffic increase, and built SEO-optimized landing pages bringing up to 120K users in a single day via Google Trends. Created a new content production process that lifted productivity by 150% and contributed to a 20%+ increase in user engagement. Tools and processes built here were later replicated across other markets.
Google Ads Manager · Ladybugs Direct
Apr 2022 – PresentScaled Google Paid to the store's #1 revenue channel: $395K+ in attributed sales at 8.75x ROAS, outperforming every other channel combined.
Digital Marketing Manager · Bohn Body Armor
Nov 2021 – Mar 2025Generated $364K+ in Google Ads revenue at 6.68x ROAS across Search, Shopping, PMax, and YouTube. Brand Search alone: 35x ROAS.
E-commerce & SEO · Charleston Hardware Co
2025 – 2026Consulted on full e-commerce website launch: keyword research, page blueprints, schema markup, GMC integration, and post-launch audit.
Google Ads · Constructive Dialogue Institute
2025Built new Google Ads campaign from scratch: keyword research, structure, ad copy, and budget allocation.
Co-founder & CEO · Carbono Zero Courier
2010 – 2015Grew from 2 employees to 30 within the first year, leading the market through Brazil's recession. Built the company end-to-end (business plan, investor pitch, operations, sales) and secured enterprise clients including Google, Microsoft, PwC, Santander, and Bank of America. Delivered 500% revenue growth in Y1 (95%, 53%, 95% in Y2–Y4) and co-created a custom ERP/logistics stack lifting service gross margin by 20%.
Co-founder & Director of Marketing · Surya Solar
2016 – 2018Designed an online sales funnel that drew 70% of clientele and drove a 300% increase in lead generation. Redesigned the sales proposal format, improving conversion rate by 5% with direct positive customer testimonials.
- Narvi2026Personal AI agent on Telegram with multi-channel orchestration.
- KeyScope2024YouTube keyword engine with a 15-category coefficient system.
- AI Risk Checker2026Live · Cyberhaven Lead-gen widget surfacing enterprise risk scores for AI apps.
- Content Machine2026Live · Cyberhaven 13-agent pipeline producing SEO/GEO articles, used by the Content Manager.
- Exit Intent System2026Full-viewport lead capture with 6sense-powered personalization.
- Multipli-Aventure2026French educational platformer teaching multiplication to my kids.