marina caju

About Me

I'm a product leader with 7+ years of experience delivering results in both B2C and B2B SaaS: from mobile retention systems for a 29M-user platform to no-code tools that streamline internal operations and survey programming.

I specialize in shipping fast, solving complex problems, and bringing structure to ambiguity.

Highlights:

📈

+233% ARPU uplift and 2.4x engagement

via mobile retention strategy

🧰

70% drop in email volume

with internal lifecycle tool

🚀

Launched 3 product lines

in under 18 months

🌍

Experience across LATAM, US & EU

fluent in Portuguese, Spanish, and English

📂 Featured Work

40%

Reduced outsourcing

Survey Builder

Scalable no-code platform that replaced legacy tools and reduced outsourcing costs by 40%.

70%

Reduced delays

Internal Project Management Tool

Cut delivery delays and email chains by 70% with a tool that automated project handoffs and approvals.

+60%

Day 1 retention

Bonus + Streak System

Gamified incentive system that boosted Day 1 retention by 60% and increased ARPU by 2.3x.

💡 My Product Superpowers

Data-Driven PM

Fluent in SQL, Mixpanel, Firebase, Metabase; run A/B tests, analyze retention, and make decisions grounded in data.

Velocity Without Chaos

Shipped 34 new features and 54 improvements in 12 months while improving cross-team alignment and delivery speed.

B2C Growth Mindset

Expert in engagement loops, onboarding optimization, ARPU growth, and behavioral triggers that drive habit formation.

Strategic Thinking + Tactical Execution

Build clear roadmaps aligned with business outcomes. Translate ambiguity into prioritized sprints that deliver value.

Technical Fluency

Comfortable participating in technical design, API specs, and system architecture conversations (AWS, Postgres, Python, Node, etc).

Cross-Functional Glue

Experienced leading rituals across product, engineering, design, sales, and ops — making sure everyone is aligned and shipping.

Global & Multilingual

Led LATAM-wide teams across Brazil, Colombia, and the U.S. Trilingual: Portuguese (native), Spanish (fluent), English (fluent).

Senior Product Manager